CITIGROUP INC

To the Stockholders and Board of Directors

Citigroup Inc.:

Opinions on the Consolidated Financial Statements and Internal Control Over Financial Reporting

We have audited the accompanying consolidated balance sheets of Citigroup Inc. and subsidiaries (the Company) as of December 31, 2023 and December 31, 2022, the related consolidated statements of income, comprehensive income, changes in stockholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2023, and the related notes (collectively, the consolidated financial statements). We also have audited the Company’s internal control over financial reporting as of December 31, 2023, based on criteria established in Internal Control—Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2023 and December 31, 2022, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2023, in conformity with U.S. generally accepted accounting principles. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2023 based on criteria established in Internal Control—Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

Basis for Opinions

The Company’s management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying management’s annual report on internal controls over financial reporting. Our responsibility is to express an opinion on the Company’s consolidated financial statements and an opinion on the Company’s internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the current period audit of the consolidated financial statements that were communicated or required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material to the consolidated financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

Assessment of the fair value of certain Level 3 assets and liabilities measured on a recurring basis

As described in Notes 1, 26 and 27 to the consolidated financial statements, the Company’s assets and liabilities recorded at fair value on a recurring basis were $896.8 billion, net and $347.6 billion, net, respectively, at December 31, 2023. The Company estimated the fair value of Level 3 assets and liabilities measured on a recurring basis ($12.7 billion and $48.0 billion, respectively, at December 31, 2023) utilizing various valuation techniques with one or more significant inputs or significant value drivers being unobservable including, but not limited to, complex internal valuation models, alternative pricing procedures or comparables analysis and discounted cash flows. We identified the assessment of the measurement of fair value for certain Level 3 assets and liabilities recorded at fair value on a recurring basis as a critical audit matter. A high degree of effort, including specialized skills and knowledge, and subjective and complex auditor judgment was involved in the assessment of the Level 3 fair values due to measurement uncertainty. Specifically, the assessment encompassed the evaluation of the fair value methodology, including methods, models and significant assumptions used to estimate fair value. Significant assumptions include proxy data, forecast data, the extrapolation and interpolation of proxy data, forecast data, and historic data as well as certain model assumptions. The assessment also included an evaluation of the conceptual soundness and performance of the valuation models. The following are the primary procedures we performed to address this critical audit matter. We involved valuation professionals with specialized skills and knowledge who assisted in evaluating the design and testing the operating effectiveness of certain internal controls related to the Company’s Level 3 fair value measurements including controls over:

•valuation methodologies, including significant assumptions

•independent price verification

•evaluating that significant model assumptions reflected those which a market participant would use to determine an exit price in the current market environment

•the valuation models used were mathematically accurate and appropriate to value the financial instruments and

•relevant information used within the Company’s models that was reasonably available was considered in the fair value determination.

We evaluated the Company’s methodology for compliance with U.S. generally accepted accounting principles. We involved valuation professionals with specialized skills and knowledge who assisted in developing an independent fair value estimate for a selection of certain Level 3 assets and liabilities recorded at fair value on a recurring basis based on independently developed valuation models and assumptions, as applicable, using market data sources we determined to be relevant and reliable and compared our independent expectation to the Company’s fair value measurements.

Assessment of the allowance for credit losses collectively evaluated for impairment

As described in Notes 1 and 16 to the consolidated financial statements, the Company’s allowance for credit losses was $19.9 billion as of December 31, 2023, which includes the allowance related to loans and unfunded lending commitments collectively evaluated for impairment (the collective ACLL). The expected credit losses for the quantitative component of the collective ACLL is the product of multiplying the probability of default (PD), loss given default (LGD), and exposure at default (EAD) for consumer and corporate loans. The credit loss factors applied are determined based on three macroeconomic scenarios (base, downside and upside) multiplied by their respective scenario weights, which take into consideration both internal and external forecasted macroeconomic variables over a reasonable and supportable period. After the reasonable and supportable forecast period, the Company reverts over the reversion period to the long-term average for the forecasted economic variables and losses based on historical observations over multiple economic cycles. The qualitative component considers idiosyncratic events and the uncertainty of forward-looking economic scenarios not captured in the quantitative models. For consumer U.S. credit cards, the Company utilizes the payment rate approach to determine the payments needed to pay off the end-of-period balance. This approach incorporates payment rate curves and is used to estimate EAD. Reserves for unconditionally cancelable accounts are based on the expected life of the balance as of the evaluation date and do not include undrawn commitments that are unconditionally cancelable. In addition, the models used for consumer U.S. credit card loans take into account leading credit indicators. For corporate loans, the models consider the credit quality as measured by risk ratings and economic factors.

We identified the assessment of the collective ACLL, specifically the quantitative component for the consumer U.S. credit cards and corporate portfolios, and the qualitative component for the corporate portfolio as a critical audit matter. Auditing the assessment involved significant measurement uncertainty requiring complex auditor judgment, and specialized skills and knowledge as well as experience in the industry. Our assessment encompassed the evaluation of the various components of the collective ACLL methodology, including the methods and models used to estimate the PD, LGD, and EAD and certain key assumptions and inputs for the Company’s quantitative and qualitative components. The key assumptions and inputs for consumer U.S. credit card loans encompass loan delinquencies, certain credit indicators, such as FICO scores, and expected life as well as the reasonable and supportable forecasts for key economic variables. The key economic variables include U.S. unemployment (UER) and U.S. housing prices (HPI), which are utilized by the models. The key assumptions and inputs for corporate loans encompass risk ratings, credit conversion factor for unfunded lending commitments, and reasonable and supportable forecast for key economic variables. The key economic variables include U.S. real gross domestic product (GDP) and UER, which are utilized by the model. The key assumptions and inputs for the qualitative component for corporate loan portfolios include potential impacts on vulnerable industries and regions due to emerging macroeconomic risks and uncertainty including those related to potential global recession, inflation, interest rates, commodity prices, and geopolitical tensions. The assessment also included an evaluation of the conceptual soundness and performance of the PD, LGD, and EAD models. In addition, auditor judgment was required to evaluate the sufficiency of audit evidence obtained.

The following are the primary procedures we performed to address this critical audit matter. We evaluated the design and tested the operating effectiveness of certain internal controls related to the Company’s measurement of the collective ACLL estimate, including controls over the:

•approval of the collective ACLL methodologies

•determination of the key assumptions and inputs used to estimate the quantitative and qualitative components of the collective ACLL

•performance monitoring of the PD, LGD, and EAD models.

We evaluated the Company’s process to develop the collective ACLL estimate by testing certain sources of data and assumptions that the Company used and considered the relevance and reliability of such data and assumptions. In addition, we involved credit risk professionals with specialized skills and knowledge, who assisted in:

•reviewing the Company’s collective ACLL methodologies and key assumptions for compliance with U.S. generally accepted accounting principles

•assessing the conceptual soundness and performance testing of the PD, LGD, and EAD models by inspecting the model documentation to determine whether the models are suitable for their intended use

•evaluating judgments made by the Company relative to the development and performance monitoring testing of the PD, LGD, and EAD models by comparing them to relevant Company-specific metrics

•assessing the conceptual soundness and performance testing of the macroeconomic scenario weights model

by inspecting the model documentation to determine whether the model is suitable for its intended use

•assessing the economic forecast scenarios through comparison to publicly available forecasts

•testing corporate loan risk ratings for a selection of borrowers by evaluating the financial performance of the borrower, sources of repayment, and any relevant guarantees or underlying collateral

•evaluating the methodologies used in determining the qualitative components and the effect of that component on the collective ACLL compared with relevant credit risk factors and consistency with credit trends.

We also assessed the sufficiency of the audit evidence obtained related to the collective ACLL by evaluating the:

•cumulative results of the audit procedures

•qualitative aspects of the Company’s accounting practices

•potential bias in the accounting estimates

Evaluation of goodwill in the Wealth, Markets and U.S. Personal Banking (USPB) reporting units

As discussed in Notes 1 and 17 to the consolidated financial statements, the goodwill balance as of December 31, 2023 was $20.1 billion, of which $4.5 billion related to Wealth, $5.2 billion related to Markets and $5.4 billion related to USPB as of October 1, 2023, prior to the Markets and Banking business realignment.

The Company performs goodwill impairment testing on an annual basis and whenever events or changes in circumstances indicate that the carrying value of a reporting unit likely exceeds its fair value. This involves estimating the fair value of the reporting units using both discounted cash flow analyses and a market multiples approach. The Company performed its annual assessment on October 1, 2023. We identified the evaluation of the goodwill impairment analysis for Wealth, Markets, and USPB as of October 1, 2023 as a critical audit matter.

In the fourth quarter, the Company identified the reorganization described in Note 3 as a triggering event due to a change in management for Markets, Banking, Services, USPB, and Wealth and the business realignment between Banking and Markets. The Company performed additional goodwill impairment testing as of December 13, 2023, the effective date of the reorganization. The evaluation of goodwill impairment testing as of December 13, 2023 was not identified as a critical audit matter.

The evaluation of the goodwill impairment analysis for Wealth, Markets, and USPB as of October 1, 2023 was identified as a critical audit matter because as of October 1, 2023, the estimated fair value of the Wealth, Markets, and USPB reporting units marginally exceeded their carrying values at the conclusion of impairment tests. This indicated a higher risk due to measurement uncertainty that the goodwill may be impaired and, therefore, involved a high degree of subjective auditor judgment. Specifically, the assessment encompassed the evaluation of the key assumptions used in estimating the fair value of the Wealth, Markets, and USPB reporting units, which include the long-term growth rate, discount rate, exit multiple assumptions, certain forecasted macroeconomic assumptions used to inform the forecasted income by reporting unit, and forecasted revenues and operating expenses by reporting unit used in the discounted cash flow analyses.

The following are the primary procedures we performed to address this critical audit matter. We evaluated the design and tested the operating effectiveness of certain internal controls related to the Company’s determination of the estimated fair value of the Wealth, Markets, and USPB units, including controls related to management’s process for assessing the appropriateness of:

•certain assumptions including the long-term growth rate, discount rate, and exit multiple assumptions used in the discounted cash flow analyses

•certain forecasted macroeconomic assumptions used to inform the forecasted income by reporting unit

•forecasted revenues and operating expenses by reporting unit.

We compared the Company’s historical forecasts to actual results at a consolidated level to assess the Company’s ability to accurately forecast key metrics such as revenues and operating expenses. We also compared prior year actuals to the expected trends for revenues and operating expenses at the reporting unit level to assess the Company’s ability to achieve their forecasts. We compared the Company’s fourth quarter 2023 forecasts to actual fourth quarter 2023 results at the reporting unit level to assess the Company’s ability to accurately forecast. We evaluated the reasonableness of the Company’s forecasts by comparing to analyst reports.

In addition, we involved a valuation professional with specialized skills and knowledge, who assisted in:

•developing an independent range of long-term growth rate assumptions by reviewing publicly available data and comparable industries and comparing it to the Company’s assumption

•evaluating the discount rate by assessing the methodology used by management and developing an independent assumption for the discount rate

•developing an independent range of the exit multiple assumptions using publicly available data for comparable entities and comparing it to the Company’s assumption utilized in the discounted cash flow analysis

•developing an independent estimate of the fair value of the Wealth, Markets, and USPB reporting units using the income and market multiple approaches and comparing the results to the Company’s fair value estimate

•assessing the reasonableness of the market capitalization reconciliation.

/s/KPMG LLP

We have served as the Company’s auditor since 1969.

New York, New York

February 23, 2024

FINANCIAL STATEMENTS AND NOTES TABLE OF CONTENTS

CONSOLIDATED STATEMENT OF INCOME Citigroup Inc. and Subsidiaries

(1)In accordance with ASC 326, which requires the provision for credit losses on AFS securities to be included in revenue.

(2)This total excludes the provision for credit losses on AFS securities, which is disclosed separately above.

(3)Due to rounding, earnings per share on continuing operations and discontinued operations may not sum to earnings per share on net income.

(1)See Note 21.

(2)See Note 1.

(3)See Note 26.

(4)See Note 8.

Statement continues on the next page.

CONSOLIDATED BALANCE SHEET Citigroup Inc. and Subsidiaries

(Continued)

(1)See Note 1 for additional details.

(2)Common dividends declared were $0.51 per share for each of 1Q23 and 2Q23, and $0.53 per share for each of 3Q23 and 4Q23; $0.51 per share for each of 1Q22, 2Q22, 3Q22 and 4Q22; and $0.51 per share for each of 1Q21, 2Q21, 3Q21 and 4Q21.

(3)Includes treasury stock related to certain activity under Citi’s employee restricted or deferred stock programs where shares are withheld to satisfy employees’ tax requirements.

(4)Primarily consists of open market purchases under Citi’s Board of Directors–approved common stock repurchase program.

(1)See Note 2.

(2)Includes balances related to the FDIC special assessment and restructuring charges. See Notes 9 and 30.

(3)In January 2023, Citi adopted ASU 2022-01. Upon adoption, Citi transferred $3.3 billion of mortgage-backed securities from HTM classification to AFS classification as allowed under the ASU. At the time of transfer, the securities were in an unrealized gain position of $0.1 billion, which was recorded in AOCI upon transfer.

(4)Operating and finance lease right-of-use assets and lease liabilities represent non-cash investing and financing activities, respectively, and are not included in the non-cash investing activities presented here. See Note 29 for more information and balances as of December 31, 2023 and 2022.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Throughout these Notes, “Citigroup,” “Citi” and the “Company” refer to Citigroup Inc. and its consolidated subsidiaries.

Certain reclassifications and updates have been made to the prior periods’ financial statements and notes to conform to the current period’s presentation.

Principles of Consolidation

The Consolidated Financial Statements include the accounts of Citigroup and its subsidiaries prepared in accordance with U.S. generally accepted accounting principles (GAAP). The Company consolidates subsidiaries in which it holds, directly or indirectly, more than 50% of the voting rights or where it exercises control. Entities in which the Company holds 20% to 50% of the voting rights and/or has the ability to exercise significant influence, other than investments of designated venture capital subsidiaries or investments accounted for at fair value under the fair value option, are accounted for under the equity method, and the pro rata share of their income (loss) is included in Other revenue. Income from investments in less-than-20%-owned companies is recognized when dividends are received. As discussed in more detail in Note 23, Citigroup also consolidates entities deemed to be variable interest entities when Citigroup is determined to be the primary beneficiary. Gains and losses on the disposition of branches, subsidiaries, affiliates, buildings and other investments are included in Other revenue.

Citibank

Citibank, N.A. (Citibank) is a commercial bank and indirect wholly owned subsidiary of Citigroup. Citibank’s principal offerings include investment banking, commercial banking, cash management, trade finance and e-commerce; private banking products and services; consumer finance, credit cards and mortgage lending; and retail banking products and services.

Variable Interest Entities (VIEs)

An entity is a variable interest entity (VIE) if it meets either of the criteria outlined in Accounting Standards Codification (ASC) Topic 810, Consolidation, which are (i) the entity has equity that is insufficient to permit the entity to finance its activities without additional subordinated financial support from other parties, or (ii) the entity has equity investors that cannot make significant decisions about the entity’s operations or that do not absorb their proportionate share of the entity’s expected losses or expected returns.

The Company consolidates a VIE when it has both the power to direct the activities that most significantly impact the VIE’s economic performance and a right to receive benefits or the obligation to absorb losses of the entity that could be potentially significant to the VIE (that is, Citi is the primary beneficiary). In addition to variable interests held in consolidated VIEs, the Company has variable interests in other

VIEs that are not consolidated because the Company is not the primary beneficiary.

All unconsolidated VIEs are monitored by the Company to assess whether any events have occurred to cause its primary beneficiary status to change.

All entities not deemed to be VIEs with which the Company has involvement are evaluated for consolidation under other subtopics of ASC 810. See Note 23 for more detailed information.

Foreign Currency Translation

Assets and liabilities of Citi’s foreign operations are translated from their respective functional currencies into U.S. dollars using period-end spot foreign exchange rates. The effects of those translation adjustments are reported in Accumulated other comprehensive income (loss) (AOCI), a component of stockholders’ equity, net of any related hedge and tax effects, until realized upon sale or substantial liquidation of the foreign entity, at which point such amounts are reclassified into earnings. Revenues and expenses of Citi’s foreign operations are translated monthly from their respective functional currencies into U.S. dollars at amounts that approximate weighted-average exchange rates.

For transactions that are denominated in a currency other than the functional currency, including transactions denominated in the local currencies of foreign operations that use the U.S. dollar as their functional currency, the effects of changes in exchange rates are primarily included in Principal transactions, along with the related effects of any economic hedges. Instruments used to hedge foreign currency exposures include foreign currency forward, option and swap contracts and, in certain instances, designated issues of non-U.S.-dollar debt. Foreign operations in countries with highly inflationary economies designate the U.S. dollar as their functional currency, with the effects of changes in exchange rates primarily included in Other revenue.

Investment Securities

Investments include debt and equity securities. Debt securities include bonds, notes and redeemable preferred stocks, as well as certain loan-backed and structured securities that are subject to prepayment risk. Equity securities include common and nonredeemable preferred stock.

Debt Securities

•Debt securities classified as “held-to-maturity” (HTM) are securities that the Company has both the ability and the intent to hold until maturity and are carried at amortized cost. Interest income on such securities is included in Interest revenue.

•Debt securities classified as “available-for-sale” (AFS) are carried at fair value with changes in fair value reported in Accumulated other comprehensive income (loss), a component of stockholders’ equity, net of applicable income taxes and hedges. Interest income on such securities is included in Interest revenue.

For investments in debt securities classified as HTM or AFS, accrued interest is subject to the Company’s non-accrual policy, which results in the timely write-off of accrued interest.

Investment securities not measured at fair value through earnings include (i) debt securities held in HTM or AFS, (ii) equity securities accounted for under the measurement alternative or equity method, (iii) Federal Reserve Bank and Federal Home Loan Bank stock and (iv) certain exchange memberships. These securities are subject to evaluation for impairment as described in Note 16 for HTM securities and in Note 14 for AFS, measurement alternative and equity method investments. Realized gains and losses on sales of investments are included in earnings, primarily on a specific identification basis.

The Company uses a number of valuation techniques for investments carried at fair value, which are described in Note 26.

Equity Securities

•Marketable equity securities are measured at fair value with changes in fair value recognized in earnings.

•Non-marketable equity securities are measured at fair value with changes in fair value recognized in earnings unless (i) the measurement alternative is elected or (ii) the investment represents Federal Reserve Bank and Federal Home Loan Bank stock or certain exchange seats that continue to be carried at cost. Non-marketable equity securities under the measurement alternative are carried at cost less impairment (if any), plus or minus changes resulting from observed prices for orderly transactions for the identical or a similar investment of the same issuer.

•Certain investments that would otherwise have been accounted for using the equity method are carried at fair value with changes in fair value recognized in earnings, since the Company elected to apply fair value accounting.

Trading Account Assets and Liabilities

Trading account assets include debt and marketable equity securities, derivatives in a receivable position, residual interests in securitizations and physical commodities inventory. In addition, as described in Note 27, certain assets that Citigroup has elected to carry at fair value under the fair value option, such as loans and purchased guarantees, are also included in Trading account assets.

Trading account liabilities include securities sold, not yet purchased (short positions) and derivatives in a net payable position, as well as certain liabilities that Citigroup has elected to carry at fair value (as described in Note 27).

Other than physical commodities inventory, all trading account assets and liabilities are carried at fair value. Revenues generated from trading assets and trading liabilities are generally reported in Principal transactions and include realized gains and losses as well as unrealized gains and losses resulting from changes in the fair value of such instruments. Interest income on trading assets is recorded in Interest revenue reduced by interest expense on trading liabilities.

Physical commodities inventory is carried at the lower of cost or market with related losses reported in Principal

transactions, except when included in a hedging relationship. Realized gains and losses on sales of commodities inventory are included in Principal transactions. Investments in unallocated precious metals accounts (gold, silver, platinum and palladium) are accounted for as hybrid instruments containing a debt host contract and an embedded non-financial derivative instrument indexed to the price of the relevant precious metal. The embedded derivative instrument and debt host contract are carried at fair value under the fair value option, as described in Note 27.

Derivatives used for trading purposes include interest rate, currency, equity, credit and commodity swap agreements, options, caps and floors, warrants, and financial and commodity futures and forward contracts. Derivative asset and liability positions are presented net by counterparty on the Consolidated Balance Sheet when a valid master netting agreement exists and the other conditions set out in ASC Topic 210-20, Balance Sheet—Offsetting, are met. See Note 24.

The Company uses a number of techniques to determine the fair value of trading assets and liabilities, which are described in Note 26.

Securities Borrowed and Securities Loaned

Securities borrowing and lending transactions do not constitute a sale of the underlying securities for accounting purposes and are treated as collateralized financing transactions. Such transactions are recorded at the amount of proceeds advanced or received plus accrued interest. As described in Note 27, the Company has elected to apply fair value accounting to a number of securities borrowing and lending transactions. Fees received or paid for all securities borrowing and lending transactions are recorded in Interest revenueor Interest expense at the contractually specified rate.

Where the conditions of ASC 210-20-45-1, Balance

Sheet—Offsetting: Right of Setoff Conditions, are met, securities borrowing and lending transactions are presented net on the Consolidated Balance Sheet.

The Company monitors the fair value of securities borrowed or loaned on a daily basis and obtains or posts additional collateral in order to maintain contractual margin protection.

As described in Note 26, the Company uses a discounted cash flow technique to determine the fair value of securities lending and borrowing transactions.

Repurchase and Resale Agreements

Securities sold under agreements to repurchase (repos) and securities purchased under agreements to resell (reverse repos) do not constitute a sale (or purchase) of the underlying securities for accounting purposes and are treated as collateralized financing transactions. As described in Note 27, the Company has elected to apply fair value accounting to certain portions of such transactions, with changes in fair value reported in earnings. Any transactions for which fair value accounting has not been elected are recorded at the amount of cash advanced or received plus accrued interest. Irrespective of whether the Company has elected fair value accounting, interest paid or received on all repo and reverse repo transactions is recorded in Interest expense or Interest revenue at the contractually specified rate.

Where the conditions of ASC 210-20-45-11, Balance Sheet—Offsetting: Repurchase and Reverse Repurchase Agreements, are met, repos and reverse repos are presented net on the Consolidated Balance Sheet.

The Company’s policy is to take possession of securities purchased under reverse repurchase agreements. The Company monitors the fair value of securities subject to repurchase or resale on a daily basis and obtains or posts additional collateral in order to maintain contractual margin protection.

As described in Note 26, the Company uses a discounted cash flow technique to determine the fair value of repo and reverse repo transactions.

Loans

Loans are reported at their outstanding principal balances net of any unearned income and unamortized deferred fees and costs, except for credit card receivable balances, which include accrued interest and fees. Loan origination fees and certain direct origination costs are generally deferred and recognized as adjustments to income over the lives of the related loans.

As described in Note 27, Citi has elected fair value accounting for certain loans. Such loans are carried at fair value with changes in fair value reported in earnings. Interest income on such loans is recorded in Interest revenue at the contractually specified rate.

Loans that are held-for-investment are classified as Loans, net of unearned income on the Consolidated Balance Sheet, and the related cash flows are included within the cash flows from the investing activities category in the Consolidated Statement of Cash Flows on the line Change in loans. However, when the initial intent for holding a loan has changed from held-for-investment to held-for-sale (HFS), the loan is reclassified to HFS, but the related cash flows continue to be reported in cash flows from investing activities in the Consolidated Statement of Cash Flows on the line Proceeds from sales and securitizations of loans.

Consumer loans represent loans and leases managed primarily by the USPB, Wealthand All Other—Legacy Franchises businesses (except Mexico SBMM loans).

Consumer Non-accrual and Re-aging Policies

As a general rule, interest accrual ceases for installment and real estate (both open- and closed-end) loans when payments are 90 days contractually past due. For credit cards and other unsecured revolving loans, however, Citi generally accrues interest until payments are 180 days past due. As a result of OCC guidance, home equity loans in regulated bank entities are classified as non-accrual if the related residential first mortgage is 90 days or more past due. Also as a result of OCC guidance, mortgage loans in regulated bank entities are classified as non-accrual within 60 days of notification that the borrower has filed for bankruptcy, with the exception of Federal Housing Administration (FHA)–insured loans.

Loans that have been modified to grant a concession to a borrower in financial difficulty may not be accruing interest at the time of the modification. The policy for returning such modified loans to accrual status varies by product and/or region. In most cases, a minimum number of payments (ranging fromone tosix) is required, while in other cases the loan is never returned to accrual status. For regulated bank entities, such modified loans are returned to accrual status if a credit evaluation at the time of, or subsequent to, the modification indicates the borrower is able to meet the restructured terms, and the borrower is current and has demonstrated a reasonable period of sustained payment performance (minimumsix months of consecutive payments).

For U.S. consumer loans, generally one of the conditions to qualify for modification (other than for loan modifications made through the CARES Act relief provisions or banking agency guidance for pandemic-related issues) is that a minimum number of payments (typically ranging fromone tothree) must be made. Upon modification, the loan is re-aged to current status. However, re-aging practices for certain open-ended consumer loans, such as credit cards, are governed by Federal Financial Institutions Examination Council (FFIEC) guidelines. For open-ended consumer loans subject to FFIEC guidelines, one of the conditions for the loan to be re-aged to current status is that at least three consecutive minimum monthly payments, or the equivalent amount, must be received. In addition, under FFIEC guidelines, the number of times that such a loan can be re-aged is subject to limitations (generally once in 12 months and twice in five years). Furthermore, FHA and Department of Veterans Affairs (VA) loans may only be modified under those respective agencies’ guidelines, and payments are not always required in order to re-age a modified loan to current.

Consumer Charge-Off Policies

Citi’s charge-off policies follow the general guidelines below:

•Unsecured installment loans are charged off at 120 days contractually past due.

•Unsecured revolving loans and credit card loans are charged off at 180 days contractually past due.

•Loans secured with non-real estate collateral are written down to the estimated value of the collateral, less costs to sell, at 120 days contractually past due.

•Real estate-secured loans are written down to the estimated value of the property, less costs to sell, at 180 days contractually past due.

•Real estate-secured loans are charged off no later than 180 days contractually past due if a decision has been made not to foreclose on the loans.

•Unsecured loans in bankruptcy are charged off within 60 days of notification of filing by the bankruptcy court or in accordance with Citi’s charge-off policy, whichever occurs earlier.

•Real estate-secured loans in bankruptcy, other than FHA-insured loans, are written down to the estimated value of the property, less costs to sell, within 60 days of notification that the borrower has filed for bankruptcy or in accordance with Citi’s charge-off policy, whichever is earlier.

Corporate Loans

Corporate loans represent loans and leases managed by Services, Marketsand Banking and the Mexico SBMM component of All Other—Legacy Franchises. Corporate loans are identified as impaired and placed on a cash (non-accrual) basis when it is determined, based on actual experience and a forward-looking assessment of the collectibility of the loan in full, that the payment of interest or principal is doubtful or when interest or principal is 90 days past due, except when the loan is well collateralized and in the process of collection. Any interest accrued on impaired corporate loans and leases is reversed at 90 days past due and charged against current earnings, and interest is thereafter included in earnings only to the extent actually received in cash. When there is doubt regarding the ultimate collectibility of principal, all cash receipts are thereafter applied to reduce the recorded investment in the loan.

Impaired corporate loans and leases are written down to the extent that principal is deemed to be uncollectible. Impaired collateral-dependent loans and leases, where repayment is expected to be provided solely by the sale of the underlying collateral and there are no other available and reliable sources of repayment, are carried at the lower of amortized cost or collateral value. Cash-basis loans are returned to accrual status when all contractual principal and interest amounts are reasonably assured of repayment and there is a sustained period of repayment performance in accordance with the contractual terms.

Loans Held-for-Sale

Corporate and consumer loans that have been identified for sale are classified as loans HFS and included in Other assets. The practice of Citi’s U.S. prime mortgage business has been to sell substantially all of its conforming loans. As such, U.S. prime mortgage conforming loans are classified as HFS and the fair value option is elected at origination, with changes in fair value recorded in Other revenue. With the exception of those loans for which the fair value option has been elected, HFS loans are accounted for at the lower of cost or market value, with any write-downs or subsequent recoveries charged to Other revenue. The related cash flows are classified in the Consolidated Statement of Cash Flows in the cash flows from operating activities category on the line Change in loans HFS. Gains and losses on loans HFS are generally presented in Other revenue. Gains on sales of fully or partially charged-off loans are presented as gross credit recoveries in the Provision for credit losses up to the amount of prior charge-offs.

Allowances for Credit Losses (ACL)

The current expected credit losses (CECL) methodology is based on relevant information about past events, including historical experience, current conditions and reasonable and supportable (R&S) forecasts that affect the collectibility of the reported financial asset balances. If the asset’s life extends beyond the R&S forecast period, then historical experience is considered over the remaining life of the assets in the ACL. The resulting ACL is adjusted in each subsequent reporting period through Provisions for credit losses in the Consolidated Statement of Income to reflect changes in history, current conditions and forecasts as well as changes in asset positions

and portfolios. ASC 326 defines the ACL as a valuation account that is deducted from the amortized cost of a financial asset to present the net amount that management expects to collect on the financial asset over its expected life. All financial assets carried at amortized cost are in the scope of ASC 326, while assets measured at fair value are excluded. See Note 14 for a discussion of impairment on available-for-sale (AFS) securities.

Increases and decreases to the allowances are recorded in Provisions for credit losses. The CECL methodology utilizes a lifetime expected credit loss (ECL) measurement objective for the recognition of credit losses for held-for-investment (HFI) loans, held-to-maturity (HTM) debt securities, receivables and other financial assets measured at amortized cost at the time the financial asset is originated or acquired. Within the life of a loan or other financial asset, the methodology generally results in earlier recognition of the provision for credit losses and the related ACL.

Estimation of ECLs requires Citi to make assumptions regarding the likelihood and severity of credit loss events and their impact on expected cash flows, which drive the probability of default (PD), loss given default (LGD) and exposure at default (EAD) models and, where Citi discounts the ECL, using discounting techniques for certain products.

Citi considers a multitude of global macroeconomic variables for the base, upside and downside probability-weighted macroeconomic scenario forecasts it uses to estimate the ACL. Citi’s forecasts of the U.S. unemployment rate and U.S. real GDP growth rate represent the key macroeconomic variables that most significantly affect its estimate of the ACL. Under the base macroeconomic forecast as of 4Q23, U.S. real GDP growth is expected to decline during 2024, and the unemployment rate is expected to increase modestly over the forecast horizon, broadly returning to pre-pandemic levels.

The macroeconomic scenario weights are estimated using a statistical model, which, among other factors, takes into consideration key macroeconomic drivers of the ACL, severity of the scenario and other macroeconomic uncertainties and risks. Citi evaluates scenario weights on a quarterly basis.

Citi’s downside scenario incorporates more adverse macroeconomic assumptions than the base scenario. For example, compared to the base scenario, Citi’s downside scenario reflects a recession, including an elevated average U.S. unemployment rate of 6.8% over the eight-quarter R&S period, with a peak difference of 3.2% in the second quarter of 2025. The downside scenario also reflects a year-over-year U.S. real GDP contraction in 2024 of 1.9%, with a peak quarter-over-quarter difference to the base scenario of 1.2% in the first quarter of 2024.

The following are the main factors and interpretations that Citi considers when estimating the ACL under the CECL methodology:

•CECL reserves are estimated over the contractual term of the financial asset, which is adjusted for expected prepayments. Expected extensions are generally not considered unless the option to extend the loan cannot be canceled unilaterally by Citi.

•Credit enhancements that are not freestanding (such as those that are included in the original terms of the contract or those executed in conjunction with the lending transaction) are considered loss mitigants for purposes of CECL reserve estimation.

•For unconditionally cancelable accounts (generally credit cards), reserves are based on the expected life of the balance as of the evaluation date (assuming no further charges) and do not include any undrawn commitments that are unconditionally cancelable. Reserves are included for undrawn commitments for accounts that are not unconditionally cancelable (such as letters of credit and corporate loan commitments, home equity lines of credit (HELOCs), undrawn mortgage loan commitments and financial guarantees).

•CECL models are designed to be economically sensitive. They utilize the macroeconomic forecasts provided by Citi’s enterprise scenario group that are approved by senior management. Analysis is performed and documented to determine the necessary qualitative management adjustment (QMA) to capture idiosyncratic events and model uncertainty.

•The portion of the forecast that reflects the enterprise scenario group’s R&S period indicates the maximum length of time its models can produce a R&S macroeconomic forecast, after which mean reversion reflecting historical loss experience is used for the remaining life of the loan to estimate expected credit losses. For the loss forecast, businesses consume the macroeconomic forecast as determined to be appropriate and justifiable.

Citi’s ability to forecast credit losses over the R&S period is based on the ability to forecast economic activity over a reasonable and supportable time window. The R&S period reflects the overall ability to have a reasonable and supportable forecast of credit loss based on economic forecasts. The R&S forecast period for consumer and corporate loans is eight quarters.

•The loss models consume all or a portion of the R&S economic forecast and then revert to historical loss experience.

•The ACL incorporates provisions for accrued interest on products that are not subject to a non-accrual and timely write-off policy (e.g., credit cards, etc.).

•Citi uses the most recent available information to inform its macroeconomic forecasts, allowing sufficient time for analysis of the results and corresponding approvals. Key variables are reviewed for significant changes through year end and changes to portfolio positions are reflected in the ACL.

•Reserves are calculated at an appropriately granular level and on a pooled basis where financial assets share risk characteristics. At a minimum, reserves are calculated at a portfolio level (product and country). Where a financial asset does not share risk characteristics with any of the pools, it is evaluated for credit losses individually.

Quantitative and Qualitative Components of the ACL

The loss likelihood and severity models use both internal and external information and are sensitive to forecasts of different macroeconomic conditions. For the quantitative component, Citi uses multiple macroeconomic scenarios and associated probabilities to estimate the ECL. Estimates of these ECLs are based upon (i) Citigroup’s internal system of credit risk ratings, (ii) historical default and loss data, including comprehensive internal history and rating agency information regarding default rates and internal data on the severity of losses in the event of default, and (iii) a R&S forecast of future macroeconomic conditions. ECL is determined primarily by utilizing models for the borrowers’ PD, LGD and EAD. Adjustments may be made to this data, including (i) statistically calculated estimates to cover the historical fluctuation of the default rates over the credit cycle, the historical variability of loss severity among defaulted loans and the degree to which there are large obligor concentrations in the global portfolio, and (ii) adjustments made for specifically known items, such as current environmental factors and credit trends.

Any adjustments needed to the modeled expected losses in the quantitative calculations are addressed through a qualitative adjustment. The qualitative adjustment considers, among other things: certain portfolio characteristics and concentrations; collateral coverage; model limitations; idiosyncratic events; and other relevant criteria under banking supervisory guidance for the ACL. The qualitative adjustment also reflects the estimated impact of the pandemic on the economic forecasts and the impact on credit loss estimates. The total ACL is composed of the quantitative and qualitative components. Citi’s qualitative component declined year-over-year, primarily driven by the incorporation of multiple macroeconomic scenarios in the quantitative component and releases of COVID-19–related uncertainty reserves as the portfolio continues to normalize toward pre-pandemic levels and as these risks are now captured in the quantitative component of the ACL. See “Accounting Changes” below for information about how the calculation of the quantitative component of the ACL changed in 2023.

For consumer loans, most portfolios including North America cards, mortgages and personal installment loans (PILs) are covered by the PD, LGD and EAD loss forecasting models. Some smaller international portfolios are covered by econometric models where the gross credit loss (GCL) rate is forecast. The modeling of all retail products is performed by examining risk drivers for a given portfolio; these drivers relate to exposures with similar credit risk characteristics and consider past events, current conditions and R&S forecasts. Under the PD x LGD x EAD approach, GCLs and recoveries are captured on an undiscounted basis. Citi incorporates expected recoveries on loans into its reserve estimate, including expected recoveries on assets previously written off.

CECL defines the exposure’s expected life as the remaining contractual maturity including any expected prepayments. Subsequent changes to the contractual terms that are the result of a re-underwriting are not included in the loan’s expected CECL life.

Citi does not establish reserves for the uncollectible accrued interest on non-revolving consumer products, such as mortgages and installment loans, which are subject to a non-accrual and timely write-off policy at 90 days past due. As such, only the principal balance is subject to the CECL reserve methodology and interest does not attract a further reserve.

For credit cards, Citi uses the payment rate approach, which leverages payment rate curves, to determine the payments that should be applied to liquidate the end-of-period balance (CECL balance) in the estimation of EAD. The payment rate approach uses customer payment behavior (payment rate) to establish the portion of the CECL balance that will be paid each month. These payment rates are defined as the percentage of principal payments received in the respective month divided by the prior month’s billed principal balance. The liquidation (CECL payment) amount for each forecast period is determined by multiplying the CECL balance by that period’s forecasted payment rate. The cumulative sum of these payments less the CECL balance produces the balance liquidation curve. Citi does not apply a non-accrual policy to credit card receivables; rather, they are subject to full charge-off at 180 days past due or bankruptcy.

As such, the entire customer balance up until write-off, including accrued interest and fees, is subject to the CECL reserve methodology.

Corporate Loans, HTM Securities and Other Assets

Citi records allowances for credit losses on all financial assets carried at amortized cost that are in the scope of CECL, including corporate loans classified as HFI, HTM debt securities and Other assets. Discounting techniques are applied for corporate loans classified as HFI and HTM securities. All cash flows are fully discounted to the reporting date. The ACL includes Citi’s estimate of all credit losses expected to be incurred over the estimated full contractual life of the financial asset. The contractual life of the financial asset does not include expected extensions, renewals or modifications. Where Citi has an unconditional option to extend the contractual term, Citi does not consider the potential extension in determining the contractual term; however, where the borrower has the sole right to exercise the extension option without Citi’s approval, Citi does consider the potential extension in determining the contractual term.

The Company primarily bases its ACL on models that assess the likelihood and severity of credit events and their impact on cash flows under R&S forecasted economic scenarios. Allowances consider the probability of the borrower’s default, the loss the Company would incur upon default and the borrower’s exposure at default. Such models discount the present value of all future cash flows, using the asset’s effective interest rate (EIR). Citi applies a more simplified approach based on historical loss rates to certain

exposures recorded in Other assets and certain loan exposures in the Private Bank within Consumer loans.

The Company considers the risk of nonpayment to be zero for U.S. Treasuries and U.S. government-sponsored agency guaranteed mortgage-backed securities (MBS) and, as such, Citi does not have an ACL for these securities. For all other HTM debt securities, ECLs are estimated using PD models and discounting techniques, which incorporate assumptions regarding the likelihood and severity of credit losses. For structured securities, specific models use relevant assumptions for the underlying collateral type. A discounting approach is applied to HTM direct obligations of a single issuer, similar to that used for corporate HFI loans.

Other Financial Assets with Zero Expected Credit Losses

For certain financial assets, zero expected credit losses will be recognized where the expectation of nonpayment of the amortized cost basis is zero, based on there being no history of loss and the nature of the receivables.

Secured Financing Transactions

Most of Citi’s reverse repurchase agreements, securities borrowing arrangements and margin loans require that the borrower continually adjust the amount of the collateral securing Citi’s interest, primarily resulting from changes in the fair value of such collateral. In such arrangements, ACLs are recorded based only on the amount by which the asset’s amortized cost basis exceeds the fair value of the collateral. No ACLs are recorded where the fair value of the collateral is equal to or exceeds the asset’s amortized cost basis, as Citi does not expect to incur credit losses on such well-collateralized exposures. For certain margin loans presented in Loans on the Consolidated Balance Sheet, ACLL is estimated using the same approach as corporate loans.

Accrued Interest

CECL permits entities to make an accounting policy election not to reserve for interest, if the entity has a policy in place that will result in timely reversal or write-off of interest. However, when a non-accrual or timely charge-off policy is not applied, an ACL is recognized on accrued interest at 90 days past due. For HTM debt securities, Citi established a non-accrual policy that results in timely write-off of accrued interest. For corporate loans, where a timely charge-off policy is used, Citi has elected to recognize an ACL on accrued interest receivable. The LGD models for corporate loans include an adjustment for estimated accrued interest.

Reasonably Expected TDRs (in 2022 and prior years)

For corporate loans, the reasonable expectation of the TDR concept requires that the contractual life over which ECLs are estimated be extended when a TDR that results in a tenor extension is reasonably expected. Reasonably expected TDRs are included in the life of the asset. A discounting technique or collateral-dependent practical expedient is used for non-accrual and TDR loan exposures that do not share risk characteristics with other loans and are individually assessed. Loans modified in accordance with the CARES Act and bank regulatory guidance are not classified as TDRs.

In 2023, the reasonably expected TDRs accounting was replaced by modifications of loans to borrowers experiencing financial difficulty accounting. See “Accounting Changes—TDRs and Vintage Disclosures” below for a description of this new accounting.

Purchased Credit-Deteriorated (PCD) Assets

ASC 326 requires entities that have acquired financial assets (such as loans and HTM securities) with an intent to hold, to evaluate whether those assets have experienced a more-than-insignificant deterioration in credit quality since origination. These assets are subject to specialized accounting at initial recognition under CECL. Subsequent measurement of PCD assets will remain consistent with other purchased or originated assets, i.e., non-PCD assets. CECL introduces the notion of PCD assets, which replaces purchased credit impaired (PCI) accounting under prior U.S. GAAP.

CECL requires the estimation of credit losses to be performed on a pool basis unless a PCD asset does not share characteristics with any pool. If certain PCD assets do not meet the conditions for aggregation, those PCD assets should be accounted for separately. This determination must be made at the date the PCD asset is purchased. In estimating ECLs from day 2 onward, pools can potentially be reassembled based upon similar risk characteristics. When PCD assets are pooled, Citi determines the amount of the initial ACL at the pool level. The amount of the initial ACL for a PCD asset represents the portion of the total discount at acquisition that relates to credit and is recognized as a “gross-up” of the purchase price to arrive at the PCD asset’s (or pool’s) amortized cost. Any difference between the unpaid principal balance and the amortized cost is considered to be related to non-credit factors and results in a discount or premium, which is amortized to interest income over the life of the individual asset (or pool). Direct expenses incurred related to the acquisition of PCD assets and other assets and liabilities in a business combination are expensed as incurred. Subsequent accounting for acquired PCD assets is the same as the accounting for originated assets; changes in the allowance are recorded in Provisions for credit losses.

Consumer

Citi does not purchase whole portfolios of PCD assets in its retail businesses. However, there may be a small portion of a purchased portfolio that is identified as PCD at the purchase date. Interest income recognition does not vary between PCD and non-PCD assets. A consumer financial asset is considered to be more-than-insignificantly credit deteriorated if it is more than 30 days past due at the purchase date.

Corporate

Citi generally classifies wholesale loans and debt securities classified as HTM or AFS as PCD when both of the following criteria are met: (i) the purchase price discount is at least 10% of par and (ii) the purchase date is more than 90 days after the origination or issuance date. Citi classifies HTM beneficial interests rated AA- and lower obtained at origination from certain securitization transactions as PCD when there is a significant difference (i.e., 10% or greater) between

contractual cash flows, adjusted for prepayments, and expected cash flows at the date of recognition.

Reserve Estimates and Policies

Management provides reserves for an estimate of lifetime ECLs in the funded loan portfolio on the Consolidated Balance Sheet in the form of an ACL. These reserves are established in accordance with Citigroup’s credit reserve policies, as approved by the Audit Committee of the Citigroup Board of Directors. Citi’s Chief Risk Officer and Chief Financial Officer review the adequacy of the credit loss reserves each quarter with risk management and finance representatives for each applicable business area. Applicable business areas include those having classifiably managed portfolios, where internal credit risk ratings are assigned (primarily Services, Markets, Banking and Wealth) and delinquency-managed portfolios (primarily USPB) or modified consumer loans, where concessions were granted due to the borrowers’ financial difficulties. The aforementioned representatives for these business areas present recommended reserve balances for their funded and unfunded lending portfolios along with supporting quantitative and qualitative data discussed below.

Estimated Credit Losses for Portfolios of Performing Exposures

Risk management and finance representatives who cover business areas with delinquency-managed portfolios containing smaller-balance homogeneous loans present their recommended reserve balances based on leading credit indicators, including loan delinquencies and changes in portfolio size as well as economic trends, including current and future housing prices, unemployment, length of time in foreclosure, costs to sell and GDP. This methodology is applied separately for each product within each geographic region in which these portfolios exist. This evaluation process is subject to numerous estimates and judgments.

Risk management and finance representatives who cover business areas with classifiably managed portfolios present their recommended reserve balances based on the frequency of default, risk ratings, loss recovery rates, size and diversity of individual large credits, and ability of borrowers with foreign currency obligations to obtain the foreign currency necessary for orderly debt servicing. Changes in these estimates could have a direct impact on the credit costs in any period and could result in a change in the allowance.

Allowance for Unfunded Lending Commitments

Credit loss reserves are recognized on all off-balance sheet commitments that are not unconditionally cancelable. Corporate loan EAD models include an incremental usage factor (or credit conversion factor) to estimate ECLs on amounts undrawn at the reporting date. Off-balance sheet commitments include unfunded exposures, revolving facilities, securities underwriting commitments, letters of credit, HELOCs and financial guarantees (excluding performance guarantees). This reserve is classified on the Consolidated Balance Sheet in Other liabilities. Changes to the allowance for unfunded lending commitments are recorded in Provision for credit losses on unfunded lending commitments.

Mortgage Servicing Rights (MSRs)

Mortgage servicing rights (MSRs) are recognized as intangible assets when purchased or when the Company sells or securitizes loans acquired through purchase or origination and retains the right to service the loans. Mortgage servicing rights are accounted for at fair value, with changes in value recorded in Other revenuein the Company’s Consolidated Statement of Income.

For additional information on the Company’s MSRs, see Notes 17 and 22.

Goodwill represents the excess of acquisition cost over the fair value of net tangible and intangible assets acquired in a business combination. Goodwill is subject to annual impairment testing and interim assessments between annual tests if an event occurs or circumstances change that would more-likely-than-not reduce the fair value of a reporting unit below its carrying amount. The Company has determined that its reporting units are at the reportable operating segment level or one level below.

The Company has an option to assess qualitative factors to determine if it is necessary to perform the goodwill impairment test. If, after assessing the totality of events or circumstances, the Company determines that it is not more-likely-than-not that the fair value of a reporting unit is less than its carrying amount, no further testing is necessary. If, however, the Company determines that it is more-likely-than-not that the fair value of a reporting unit is less than its carrying amount, then the Company must perform the quantitative test.

The Company has an unconditional option to bypass the qualitative assessment for any reporting unit in any reporting period and proceed directly to the quantitative test.

The quantitative test requires a comparison of the fair value of the individual reporting unit to its carrying value, including goodwill. If the fair value of the reporting unit is in excess of the carrying value, the related goodwill is considered not impaired and no further analysis is necessary. If the carrying value of the reporting unit exceeds the fair value, an impairment loss is recognized in an amount equal to that excess, limited to the total amount of goodwill allocated to that reporting unit.

Upon any business disposition, goodwill is allocated to, and derecognized with, the disposed business based on the ratio of the fair value of the disposed business to the fair value of the reporting unit.

During the year ended December 31, 2022, the Company voluntarily changed its annual impairment assessment date from July 1 to October 1.

Additional information on Citi’s goodwill impairment testing can be found in Note 17.

Intangible Assets

Intangible assets—including core deposit intangibles, present value of future profits, purchased credit card relationships, credit card contract-related intangibles, other customer relationships and other intangible assets, but excluding MSRs—are amortized over their estimated useful lives. Credit card contract-related intangibles include fixed and unconditional

costs incurred to renew or extend the contract with a card partner. In estimating the useful life of a credit card contract-related intangible, the Company considers the probability of contract renewal or extension to determine the period that the asset is expected to contribute future cash flows. Intangible assets that are deemed to have indefinite useful lives, primarily trade names, are not amortized and are subject to annual impairment tests. An impairment exists if the carrying value of the indefinite-lived intangible asset exceeds its fair value. For other intangible assets subject to amortization, an impairment is recognized if the carrying amount is not recoverable and exceeds the fair value of the intangible asset.

Premises and Equipment

Premises and equipment includes lease right-of-use assets, property and equipment (including purchased and developed software), net of depreciation and amortization. Substantially all lease right-of-use assets are amortized on a straight-line basis over the lease term, and substantially all property and equipment is depreciated or amortized on a straight-line basis over the useful life of the asset.

Other Assets and Other Liabilities

Other assets include, among other items, loans HFS, deferred tax assets, equity method investments, interest and fees receivable, repossessed assets, other receivables and assets from businesses classified as HFS that are reclassified from other balance sheet line items. Other liabilities include, among other items, accrued expenses, lease liabilities, deferred tax liabilities, reserves for legal claims and legal fee accruals, taxes, unfunded lending commitments, repositioning reserves, other payables and liabilities from businesses classified as HFS that are reclassified from other balance sheet line items. Legal fee accruals are recognized as incurred.

Other Real Estate Owned and Repossessed Assets

Real estate or other assets received through foreclosure or repossession are generally reported in Other assets, net of a valuation allowance for selling costs and subsequent declines in fair value.

Securitizations

There are two key accounting determinations that must be made relating to securitizations. Citi first makes a determination as to whether the securitization entity must be consolidated. Second, it determines whether the transfer of financial assets to the entity is considered a sale under GAAP. If the securitization entity is a VIE, the Company consolidates the VIE if it is the primary beneficiary (as discussed in “Variable Interest Entities” above). For all other securitization entities determined not to be VIEs in which Citigroup participates, consolidation is based on which party has voting control of the entity, giving consideration to removal and liquidation rights in certain partnership structures. Only securitization entities controlled by Citigroup are consolidated.

Interests in the securitized and sold assets may be retained in the form of subordinated or senior interest-only strips, subordinated tranches, spread accounts and servicing rights. In credit card securitizations, the Company retains a seller’s interest in the credit card receivables transferred to the trusts, which is not in securitized form. In the case of consolidated securitization entities, including the credit card trusts, these retained interests are not reported on Citi’s Consolidated Balance Sheet. The securitized loans remain on the Balance Sheet. Substantially all of the consumer loans sold or securitized through non-consolidated trusts by Citigroup are U.S. prime residential mortgage loans. Retained interests in non-consolidated mortgage securitization trusts are classified as Trading account assets, except for MSRs, which are included in Intangible assets on Citigroup’s Consolidated Balance Sheet.

Debt

Short-term borrowingsand Long-term debt are accounted for at amortized cost, except where the Company has elected to report the debt instruments (including certain structured notes) at fair value, or debt that is in a fair value hedging relationship. Premiums, discounts and issuance costs on long-term debt accounted for at amortized cost are amortized over the contractual term using the effective interest method.

Transfers of Financial Assets

For a transfer of financial assets to be considered a sale, (i) the assets must be legally isolated from the Company, even in bankruptcy or other receivership, (ii) the purchaser must have the right to pledge or sell the assets transferred (or, if the purchaser is an entity whose sole purpose is to engage in securitization and asset-backed financing activities through the issuance of beneficial interests and that entity is constrained from pledging the assets it receives, each beneficial interest holder must have the right to sell or pledge their beneficial interests), and (iii) the Company may not have an option or obligation to reacquire the assets.

If these sale requirements are met, the assets are removed from the Company’s Consolidated Balance Sheet. If the conditions for sale are not met, the transfer is considered to be a secured borrowing, the assets remain on the Consolidated Balance Sheet and the sale proceeds are recognized as the Company’s liability. A legal opinion on a sale generally is obtained for complex transactions or where the Company has continuing involvement with the assets transferred or with the securitization entity. For a transfer to be eligible for sale accounting, that opinion must state that the asset transfer would be considered a sale and that the assets transferred would not be consolidated with the Company’s other assets in the event of the Company’s insolvency. See Note 23 for further discussion.

Risk Management Activities—Derivatives Used for Hedging Purposes

The Company manages its exposures to market movements outside of its trading activities by modifying the asset and liability mix, either directly or through the use of derivative financial products, including interest rate swaps, futures, forwards, purchased options and commodities, as well as foreign-exchange contracts. These end-user derivatives are carried at fair value in Trading account assets and Trading account liabilities.

See Note 24 for a further discussion of the Company’s hedging and derivative activities.

Instrument-Specific Credit Risk

Citi presents separately in AOCI the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk, when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. Accordingly, the change in fair value of liabilities for which the fair value option was elected related to changes in Citigroup’s own credit spreads is presented in AOCI.

Employee Benefits Expense

Employee benefits expense includes current service costs of pension and other postretirement benefit plans (which are accrued on a current basis), contributions and unrestricted awards under other employee plans, the amortization of restricted stock awards and costs of other employee benefits. For its most significant pension and postretirement benefit plans (Significant Plans), Citigroup measures and discloses plan obligations, plan assets and periodic plan expense quarterly, instead of annually. The effect of remeasuring the Significant Plan obligations and assets by updating plan actuarial assumptions on a quarterly basis is reflected in AOCIand periodic plan expense. All other plans (All Other Plans) are remeasured annually. Benefits earned during the year are reported in Compensation and benefits expenses and all other components of the net annual benefit cost are reported in Other operating expenses in the Consolidated Statement of Income. See Note 8.

Stock-Based Compensation

The Company recognizes compensation expense related to stock awards over the requisite service period, generally based on the instruments’ grant-date fair value, reduced by actual forfeitures as they occur. Compensation cost related to awards granted to employees who meet certain age plus years-of-service requirements (retirement-eligible employees) is accrued in the year prior to the grant date in the same manner as the accrual for cash incentive compensation. Certain stock awards with performance conditions or certain clawback provisions are subject to variable accounting, pursuant to which the associated compensation expense fluctuates with changes in Citigroup’s common stock price. See Note 7.

Income Taxes

The Company is subject to the income tax laws of the U.S. and its states and municipalities, as well as the non-U.S. jurisdictions in which it operates. These tax laws are complex and may be subject to different interpretations by the taxpayer and the relevant governmental taxing authorities. In establishing a provision for income tax expense, the Company must make judgments and interpretations about these tax laws. The Company must also make estimates about when in the future certain items will affect taxable income in the various tax jurisdictions, both domestic and foreign.

Disputes over interpretations of the tax laws may be subject to review and adjudication by the court systems of the various tax jurisdictions, or may be settled with the taxing authority upon examination or audit. The Company treats interest and penalties on income taxes as a component of Income tax expense.

Deferred taxes are recorded for the future consequences of events that have been recognized in financial statements or tax returns, based upon enacted tax laws and rates. Deferred tax assets are recognized subject to management’s judgment about whether realization is more-likely-than-not. ASC 740, Income Taxes, sets out a consistent framework to determine the appropriate level of tax reserves to maintain for uncertain tax positions. This interpretation uses a two-step approach wherein a tax benefit is recognized if a position is more-likely-than-not to be sustained. The amount of the benefit is then measured to be the highest tax benefit that is more than 50% likely to be realized. ASC 740 also sets out disclosure requirements to enhance transparency of an entity’s tax reserves.

See Note 10 for a further description of the Company’s tax provision and related income tax assets and liabilities.

Commissions, Underwriting and Principal Transactions

Commissions and fees revenues are recognized in income when earned. Underwriting revenues are recognized in income typically at the closing of the transaction. Principal transactions revenues are recognized in income on a trade-date basis. See Note 5 for a description of the Company’s revenue recognition policies for Commissions and fees, and Note 6 for details of Principal transactions revenue.

Earnings per Share

Earnings per share (EPS) is calculated using the two-class method. Under the two-class method, all earnings (distributed and undistributed) are allocated to common stock and participating securities. Undistributed earnings are calculated after deducting preferred stock dividends, any issuance cost incurred at the time of issuance of redeemed preferred stock and dividends paid and accrued to common stocks and RSU/DSA share awards. Citi grants restricted and deferred share awards under its shares-based compensation programs, which entitle recipients to receive nonforfeitable dividends during the vesting period on a basis equivalent to dividends paid to holders of the Company’s common stock. These unvested awards meet the definition of participating securities based on their respective rights to receive nonforfeitable dividends, and they are treated as a separate class of securities and are not included in computing basic EPS.

Diluted EPS incorporates the potential impact of contingently issuable shares, stock options and awards, which require future service as a condition of delivery of the underlying common stock. Anti-dilutive options and warrants are disregarded in the EPS calculations. Diluted EPS is calculated under both the two-class and treasury stock methods, and the more dilutive amount is reported. Participating securities are not included as incremental shares in computing diluted EPS.

Use of Estimates

Management must make estimates and assumptions that affect the Consolidated Financial Statements and the related Notes. Such estimates are used in connection with certain fair value measurements. See Note 26 for further discussions on estimates used in the determination of fair value. Moreover, estimates are significant in determining the amounts of other-

than-temporary impairments, impairments of goodwill and other intangible assets, provisions for probable losses that may arise from credit-related exposures, probable and estimable losses related to litigation and regulatory proceedings, and income taxes. While management makes its best judgment, actual amounts or results could differ from those estimates.

Cash Equivalents and Restricted Cash Flows

Cash equivalents are defined as those amounts included in Cash and due from banks and Deposits with banks. Certain cash balances are restricted by regulatory or contractual requirements. See Note 28 for additional information on restricted cash.

Related Party Transactions

The Company has related party transactions with certain of its subsidiaries and affiliates. These transactions, which are primarily short-term in nature, include cash accounts, collateralized financing transactions, margin accounts, derivative transactions, charges for operational support and the borrowing and lending of funds, and are entered into in the ordinary course of business.

ACCOUNTING CHANGES

TDRs and Vintage Disclosures

In March 2022, the Financial Accounting Standards Board (FASB) issued ASU No. 2022-02, Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures. Citi adopted the ASU on January 1, 2023, including the guidance on the recognition and measurement of TDRs under the modified retrospective approach.

Adopting these amendments resulted in a decrease to the ACLL of $352 million and an increase in other assets related to held-for-sale businesses of $40 million, with a corresponding increase to retained earnings of $290 million and a decrease in deferred tax assets of $102 million on January 1, 2023. The ACL for corporate loans was unaffected because the measurement approach used for corporate loans is not in the scope of this ASU.

ASU 2022-02 eliminates the accounting and disclosure requirements for TDRs, including the requirement to measure the ACLL for TDRs using a discounted cash flow (DCF) approach. With the elimination of TDR accounting requirements, reasonably expected TDRs are no longer considered when determining the term over which to estimate expected credit losses. The ACLL for modified loans that are collateral dependent continues to be based on the fair value of the collateral.

Upon adoption of the ASU on January 1, 2023, Citi discontinued the use of a DCF approach for consumer loans formerly considered TDRs. Beginning January 1, 2023, Citi measures the ACLL for all consumer loans under approaches that do not incorporate discounting, primarily utilizing models that consider the borrowers’ probability of default, loss given default and exposure at default. In addition, upon adoption of the ASU, Citi collectively evaluates smaller-balance homogeneous loans formerly considered TDRs for expected credit losses, whereas previously those loans had been individually evaluated.

The ASU also requires disclosure of modifications of loans to borrowers experiencing financial difficulty if the modification involves principal forgiveness, an interest rate reduction, an other-than-insignificant payment delay, a term extension or a combination of those types of modifications. In addition, the ASU requires the disclosure of current-period gross write-offs by year of loan origination (vintage). The amendments related to disclosures are required to be applied prospectively beginning as of the date of adoption. See Note 14 for these new disclosures for periods beginning on and after January 1, 2023.

Long-Duration Insurance Contracts

In August 2018, the FASB issued ASU No. 2018-12, Financial Services—Insurance: Targeted Improvements to the Accounting for Long-Duration Contracts, which changes the existing recognition, measurement, presentation and disclosures for long-duration contracts issued by an insurance entity. Specifically, the guidance (i) improves the timeliness of recognizing changes in the liability for future policy benefits and prescribes the rate used to discount future cash flows for long-duration insurance contracts, (ii) simplifies and improves the accounting for certain market-based options or guarantees associated with deposit (or account balance) contracts, (iii) simplifies the amortization of deferred acquisition costs, and (iv) introduces additional quantitative and qualitative disclosures. Citi has certain insurance subsidiaries, primarily in Mexico, that issue long-duration insurance contracts such as traditional life insurance policies and life-contingent annuity contracts that are impacted by the requirements of ASU 2018-12.

Citi adopted the targeted improvements in ASU 2018-12 on January 1, 2023, resulting in a $39 million decrease in Other liabilities and a $27 million increase in AOCI, after-tax.

Fair Value Hedging—Portfolio Layer Method

In March 2022, the FASB issued ASU No. 2022-01, Derivatives and Hedging (Topic 815): Fair Value Hedging—Portfolio Layer Method, intended to better align hedge accounting with an organization’s risk management strategies. Specifically, the guidance expands the current single-layer method to allow multiple hedge layers of a single closed portfolio of qualifying assets, which include both prepayable and non-prepayable assets. Upon the adoption of the guidance, entities may elect to reclassify securities held-to-maturity to the available-for-sale category provided that the reclassified securities are designated in a portfolio hedge. Coincident with the adoption of this ASU, on January 1, 2023, Citi transferred HTM mortgage-backed securities with an amortized cost and fair value of approximately $3.3 billion and $3.4 billion, respectively, into AFS as permitted under the guidance, and hedged them under the portfolio layer method.

Reference Rate Reform

On December 21, 2022, the FASB issued ASU No. 2022-06, Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848, which extends the period of time preparers

can utilize the reference rate reform relief guidance. In 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting, which provides optional guidance to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. In 2021, the U.K. Financial Conduct Authority (FCA) delayed the intended cessation date of certain tenors of USD LIBOR to June 30, 2023. To ensure that the relief in Topic 848 covers the period of time during which a significant number of modifications may take place, the ASU defers the sunset date of Topic 848 from December 31, 2022 to December 31, 2024. The extension allows Citi to transition its remaining contracts and maintain hedge accounting. The ASU was adopted by Citi upon issuance and did not impact financial results in 2022.

Multiple Macroeconomic Scenarios-Based ACL Approach

During the second quarter of 2022, Citi refined its ACL methodology to utilize multiple macroeconomic scenarios to estimate its allowance for credit losses. The ACL was previously estimated using a combination of a single base-case forecast scenario as part of its quantitative component and a component of its qualitative management adjustment that reflects economic uncertainty from downside macroeconomic scenarios. As a result of this change, Citi now explicitly incorporates multiple macroeconomic scenarios—base, upside, and downside—and associated probabilities in the quantitative component when estimating its ACL, while still retaining certain of its qualitative management adjustments.

This refinement represents a “change in accounting estimate” under ASC Topic 250, Accounting Changes and Error Corrections, with prospective application beginning in the period of change. This change in accounting estimate resulted in a decrease of approximately $0.3 billion in the allowance for credit losses in the second quarter of 2022, partially offsetting an increase of $0.8 billion in the allowance for credit losses due to the increased macroeconomic uncertainty and other factors in the second quarter of 2022.

FUTURE ACCOUNTING CHANGES

Accounting for and Disclosure of Crypto Assets

In December 2023, the FASB issued ASU No. 2023-08, Intangibles—Goodwill and Other—Crypto Assets (Subtopic 350-60): Accounting for and Disclosure of Crypto Assets, intended to improve the accounting for certain crypto assets by requiring an entity to measure those assets at fair value each reporting period, with changes in fair value recognized in net income. The amendments also improve the information provided to investors about an entity’s crypto asset holdings by requiring disclosure about significant holdings, contractual sale restrictions and changes during the reporting period. The guidance is effective for fiscal years beginning after December 15, 2024, and interim periods within those fiscal years with early adoption permitted. Citi does not hold any crypto assets within the scope of the guidance.

Income Taxes (Topic 740): Improvements to Income Tax Disclosures

In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, intended to enhance the transparency and decision usefulness of income tax disclosures. This guidance requires that public business entities disclose on an annual basis a tabular rate reconciliation in eight specific categories disaggregated by nature and for foreign tax effects by jurisdiction that meet a 5% of pretax income multiplied by the applicable statutory tax rate or greater threshold annually. The eight categories include state and local income taxes, net of federal income tax effect; foreign tax effects; enactment of new tax laws or tax credits; effect of cross-border tax laws; valuation allowances; nontaxable items and nondeductible items; and changes in unrecognized tax benefits. Additional disclosures include qualitative description of the state and local jurisdictions that contribute to the majority (greater than 50%) of the effect of the state and local income tax category and explanation of the nature and effect of changes in individual reconciling items. The guidance also requires entities annually to disclose income taxes paid (net of refunds received) disaggregated by federal, state and foreign taxes and by jurisdiction identified based on the same 5% quantitative threshold.

The standard is effective for fiscal years beginning after December 15, 2024. The transition method is prospective with the retrospective method permitted. Citi plans to adopt the ASU for the annual reporting period beginning on January 1, 2025, and is currently evaluating the impact on disclosures.

Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures

In November 2023, the FASB issued ASU No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, intended to improve reportable segments disclosure requirements primarily through enhanced disclosures about significant segment expenses. The ASU includes a requirement to disclose significant segment expenses that are regularly provided to the chief operating decision maker (CODM) and included within each reported measure of segment profit or loss, the title and position of the CODM, an explanation of how the CODM uses the reported measure(s) of segment profit or loss in assessing segment performance and deciding how to allocate resources, and all segments’ profit or loss and assets disclosures currently required annually by Topic 280 along with those introduced by the ASU to be reported on an interim basis. The amendments also clarified that public entities are not precluded from reporting additional measures of a segment’s profit or loss that are regularly used by the CODM.

The ASU is required to be adopted on a retrospective basis and will be effective for Citi for its annual period ending December 31, 2024 and interim periods for the interim period beginning on January 1, 2025. Citi is currently evaluating the impact of the standard on its disclosure of reportable segments and related disclosures.

Accounting for Investments in Tax Credit Structures

In March 2023, the FASB issued ASU No. 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. The ASU expands the scope of tax equity investments eligible to apply the proportional amortization method of accounting. Under the proportional amortization method, the cost of an eligible investment is amortized in proportion to the income tax credits and other income tax benefits that are received by the investor, with the amortization of the investment and the income tax credits being presented net in the income statement as components of income tax expense (benefit). The ASU permits the Company to elect to use the proportional amortization method to account for an expanded range of eligible tax-incentivized investments if certain conditions are met. Citi adopted the ASU on January 1, 2024, which did not have a material impact to the financial statements of the Company.

Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions

In June 2022, the FASB issued ASU No. 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions. The ASU was issued to address diversity in practice whereby certain entities included the impact of contractual restrictions when valuing equity securities, and it clarifies that a contractual restriction on the sale of an equity security should not be considered part of the unit of account of the equity security and, therefore, should not be considered in measuring fair value. The ASU also includes requirements for entities to disclose the fair value of equity securities subject to contractual sale restrictions, the nature and remaining duration of the restrictions and the circumstances that could cause a lapse in the restrictions.

Citi adopted the ASU on January 1, 2024, which did not have a material impact to the financial statements of the Company.

2. DISCONTINUED OPERATIONS, SIGNIFICANT DISPOSALS AND OTHER BUSINESS EXITS

Summary of Discontinued Operations

The Company’s results from Discontinued operations consisted of residual activities related to the sales of the Egg Banking plc credit card business in 2011 and the German retail banking business in 2008. All Discontinued operations results are recorded within All Other.

The following table summarizes financial information for all Discontinued operations:

During 2022, the Company finalized the settlement of certain liabilities related to its legacy consumer operation in the U.K. (the legacy operation), including an indemnification liability related to its sale of the Egg Banking business in 2011, which led to the substantial liquidation of the legacy operation. As a result, a CTA loss (net of hedges) in AOCI of approximately $400 million pretax ($345 million after-tax) related to the legacy operation was released to earnings in 2022. Out of the total CTA release, a $260 million pretax loss ($221 million after-tax loss) was attributable to the Egg Banking business noted above, reported in Discontinued operations, and therefore the corresponding CTA release was also reported in Discontinued operations during 2022. The remaining CTA release of a $140 million pretax loss ($124 million after-tax loss) related to Legacy Holdings Assets was reported as part of Continuing operations within All Other—Legacy Franchises.

While the legacy operation was divested in multiple sales over the years, each transaction did not result in substantial liquidation given that Citi retained certain liabilities noted above, which were gradually settled over time until reaching the point of substantial liquidation during 2022, triggering the release of the CTA loss to earnings.

Cash flows from Discontinued operations were not material for the periods presented.

Significant Disposals

As of December 31, 2023, Citi had closed the sales ofnine consumer banking businesses within All Other—Legacy Franchises. Australia closed in the second quarter of 2022, the Philippines closed in the third quarter of 2022, Bahrain, Malaysia and Thailand closed in the fourth quarter of 2022, India and Vietnam closed in the first quarter of 2023, Taiwan closed in the third quarter of 2023 and Indonesia closed in the fourth quarter of 2023. Of thenine sale agreements, thefive below were identified as significant disposals. The gains and losses included in the footnotes to the table below represent life-to-date amounts, which are periodically updated due to post-closing purchase price adjustments. As of December 31, 2023, there were no remaining assets or liabilities included on Citi’s Consolidated Balance Sheet related to the significant disposals:

(1) On June 1, 2022, Citi completed the sale of its Australia consumer banking business, which was part of All Other—Legacy Franchises. The business had approximately $9.4 billion in assets, including $9.3 billion of loans (net of allowance of $140 million) and excluding goodwill. The total amount of liabilities was $7.3 billion, including $6.8 billion in deposits. The transaction generated a pretax loss on sale of approximately $766 million ($643 million after-tax), subject to closing adjustments, recorded in Other revenue. The loss on sale primarily reflected the impact of an approximate pretax $620 million CTA loss (net of hedges) ($470 million after-tax) already reflected in the AOCI component of equity. The sale closed on June 1, 2022, and the CTA-related balance was removed from AOCI, resulting in a neutral CTA impact to Citi’s CET1 Capital. The income before taxes in the above table for Australia reflects Citi’s ownership through June 1, 2022.

(2) On August 1, 2022, Citi completed the sale of its Philippines consumer banking business, which was part of All Other—Legacy Franchises. The business had approximately $1.8 billion in assets, including $1.2 billion of loans (net of allowance of $80 million) and excluding goodwill. The total amount of liabilities was $1.3 billion, including $1.2 billion in deposits. The sale resulted in a pretax gain on sale of approximately $618 million ($290 million after-tax), subject to closing adjustments, recorded in Other revenue. The income before taxes in the above table for the Philippines reflects Citi’s ownership through August 1, 2022.

(3) On November 1, 2022, Citi completed the sale of its Thailand consumer banking business, which was part of All Other—Legacy Franchises. The business had approximately $2.7 billion in assets, including $2.4 billion of loans (net of allowance of $67 million) and excluding goodwill. The total amount of liabilities was $1.0 billion, including $0.8 billion in deposits. The sale resulted in a pretax gain on sale of approximately $209 million ($115 million after-tax), subject to closing adjustments, recorded in Other revenue. The income before taxes in the above table for Thailand reflects Citi’s ownership through November 1, 2022.

(4) On March 1, 2023, Citi completed the sale of its India consumer banking business, which was part of All Other—Legacy Franchises. The business had approximately $5.2 billion in assets, including $3.4 billion of loans (net of allowance of $32 million) and excluding goodwill. The total amount of liabilities was $5.2 billion, including $5.1 billion in deposits. The sale resulted in a pretax gain on sale of approximately $1.1 billion ($727 million after-tax) recorded in Other revenue. The income before taxes in the above table for India reflects Citi’s ownership through March 1, 2023.

(5) On August 12, 2023, Citi completed the sale of its Taiwan consumer banking business, which was part of All Other—Legacy Franchises. The business had approximately $11.6 billion in assets, including $7.2 billion of loans (net of allowance of $92 million) and excluding goodwill. The total amount of liabilities was $9.2 billion, including $9.0 billion in deposits. The sale resulted in a pretax gain on sale of approximately $403 million ($284 million after-tax), subject to closing adjustments, recorded in Other revenue. The income before taxes in the above table for Taiwan reflects Citi’s ownership through August 12, 2023.

(6) Income before taxes for the period in which the individually significant component was classified as HFS for all prior periods presented. For Australia, excludes the pretax loss on sale. For the Philippines, Thailand, India and Taiwan, excludes the pretax gain on sale.

Citi did not have any other significant disposals as of December 31, 2023.

As of February 23, 2024, Citi had not entered into sale agreements for the remaining All Other—Legacy Franchises businesses to be sold, specifically the Poland consumer banking business and the Mexico Consumer/SBMM businesses.

For a description of the Company’s significant disposal transactions in prior periods and financial impact, see Note 2 to the Consolidated Financial Statements in Citi’s 2022 Form 10-K.

Other Business Exits

Wind-Down of Korea Consumer Banking Business

On October 25, 2021, Citi disclosed its decision to wind down and close its Korea consumer banking business, which is reported in the All Other—Legacy Franchises operating segment. In connection with the announcement, Citibank Korea Inc. (CKI) commenced a voluntary early termination program (Korea VERP). Due to the voluntary nature of this termination program, no liabilities for termination benefits are recorded until CKI makes formal offers to employees that are then irrevocably accepted by those employees. Related charges are recorded as Compensation and benefits.

The following table summarizes the reserve charges related to the Korea VERP and other initiatives reported in the All Other operating segment:

Note: There were no additional charges after June 30, 2022.

The total cash charges for the wind-down were $1.1 billion through 2022, most of which were recognized in 2021. Citi does not expect to record any additional charges in connection with the Korea VERP.

See Note 8 for details on the pension impact of the Korea wind-down.

Wind-Down of Russia Consumer and Institutional Banking Businesses

On August 25, 2022, Citi announced its decision to wind down its consumer banking and local commercial banking operations in Russia. As part of the wind-down, Citi is also actively pursuing sales of certain Russian consumer banking portfolios.

On October 14, 2022, Citi disclosed that it would end nearly all of the institutional banking services it offered in Russia by the end of the first quarter of 2023. Going forward, Citi’s only operations in Russia are those necessary to fulfill its remaining legal and regulatory obligations.

Portfolio Sales

•On December 12, 2022, Citi completed the sale of a portfolio of ruble-denominated personal installment loans, totaling approximately $240 million in outstanding loan balances, to Uralsib, a Russian commercial bank, resulting in a pretax net loss of approximately $12 million. The net loss on sale of the loan portfolio included a $32 million adjustment to record the loans at lower of cost or fair value recognized in Other revenue. In addition, the sale of the loans resulted in a release in the allowance for credit losses on loans of approximately $20 million recognized in the Provision for credit losses on loans.

•During the second quarter of 2023, Citi recorded an incremental gain of $5 million related to post-closing contingency payments for the previously disclosed personal installment loan sale in Other revenue. The previously disclosed sale of a portfolio of ruble-denominated personal installment loans resulted in a pretax net loss on sale of approximately $7 million.

•During the third and fourth quarters of 2023, as part of the previously disclosed cards referral agreement with a Russian bank, approximately $47 million of credit card receivables was settled upon referral and refinanced.

Wind-Down Charges

The following tables provide details on Citi’s Russia wind-down charges:

(1) Recorded in Compensation and benefits.

(2) Recorded in Other operating expenses.

3. OPERATING SEGMENTS

Effective in the fourth quarter of 2023, Citi changed its management structure resulting in changes in its reportable operating segments to reflect how the CEO, who is the chief operating decision maker (CODM), manages the Company, including allocating resources and measuring performance. Citi reorganized its reporting into five reportable operating segments: Services, Markets, Banking, U.S. Personal Banking (USPB) and Wealth, with the remaining operations recorded in All Other, which includes activities not assigned to a specific reportable operating segment, as well as discontinued operations.

Prior-period reportable operating segment results have been revised to reflect the reorganization of Citi’s management reporting structure, including:

•certain businesses engaged in financing and securitization activities, previously operated under a revenue and expense sharing agreement between Markets and Banking, now reside primarily within Markets;

•the implementation of a Corporate Lending revenue sharing arrangement where certain revenues earned by Citi are subject to a revenue sharing arrangement to Banking—Corporate Lending from Investment Banking and certain Markets and Services products sold to Corporate Lending clients;

•the re-attribution of certain allocation methodologies for other revenues and expenses incurred and allocated to the reportable operating segments to conform with the resegmentation and segment profit and loss measure used by the CODM; and

•certain other immaterial reclassifications.

Citi’s consolidated results remain unchanged for all periods presented following the changes and reclassifications discussed above.

All Other results are presented on a managed basis that excludes divestiture-related impacts related to (i) Citi’s divestitures of its Asia consumer banking businesses and (ii) the planned divestiture of Mexico consumer banking and small business and middle-market banking within All Other—Legacy Franchises. The managed basis presents investors with a view of operating earnings that provides increased transparency and clarity into the operational results of Citi’s performance; improves the visibility of management decisions and their impacts on operational performance; enables better comparison to peer companies; and allows Citi to provide a long-term strategic view of the business going forward.

The following is a description of each of Citi’s reportable operating segments, and the products and services they provide to their respective client bases.

Services

Services includes Treasury and Trade Solutions (TTS) and Securities Services. TTS provides an integrated suite of tailored cash management, trade and working capital solutions to multinational corporations, financial institutions and public sector organizations. Securities Services provides cross-border support for clients, providing on-the-ground local market

expertise, post-trade technologies, customized data solutions and a wide range of securities services solutions that can be tailored to meet client needs.

Markets

Markets provides corporate, institutional and public sector clients around the world with a full range of sales and trading services across equities, foreign exchange, rates, spread products and commodities. The range of services includes market-making across asset classes, risk management solutions, financing, prime brokerage, research, securities clearing and settlement.

Banking

Banking includes Investment Banking, which supports client capital-raising needs to help strengthen and grow their businesses, including equity and debt capital markets-related strategic financing solutions, as well as advisory services related to mergers and acquisitions, divestitures, restructurings and corporate defense activities; and Corporate Lending, which includes corporate and commercial banking, serving as the conduit of Citi’s full product suite to clients.

USPB

USPB includes Branded Cards and Retail Services, which have proprietary card portfolios and co-branded card portfolios within Branded Cards, and co-brand and private label relationships within Retail Services. USPB also includes Retail Banking, which provides traditional banking services to retail and small business customers.

Wealth

Wealth includes Private Bank, Wealth at Work and Citigold and provides financial services to a range of client segments including affluent, high net worth and ultra-high net worth clients through banking, lending, mortgages, investment, custody and trust product offerings in 20 countries, including the U.S., Mexico andfour wealth management centers: Singapore, Hong Kong, the UAE and London. Private Bank provides financial services to ultra-high net worth clients through customized product offerings. Wealth at Work provides financial services to professional industries (including law firms, consulting groups, accounting and asset management) through tailored solutions. Citigold includes Citigold and Citigold Private Clients, which both provide financial services to affluent and high net worth clients through elevated product offerings and financial relationships.

All Other

All Other primarily consists of activities not assigned to the reportable operating segments, including certain unallocated costs of global functions, other corporate expenses and net treasury results, offsets to certain line-item reclassifications and eliminations, and unallocated taxes; discontinued operations within Corporate/Other; and Legacy Franchises, which consists of Asia Consumer and Mexico Consumer/SBMM businesses that Citi intends to exit, and its remaining Legacy Holdings Assets. Corporate/Other within All Other also includes all restructuring charges related to actions taken as part of Citi’s organizational simplification initiatives. See Note 9.

Revenues and expenses directly associated with each respective business segment or component are included in determining respective operating results. Other revenues and expenses that are attributable to a particular business segment or component are generally allocated from All Other based on respective net revenues, non-interest expenses or other relevant measures.

Revenues and expenses from transactions with other operating segments or components are treated as transactions with external parties for purposes of segment disclosures, while funding charges paid by operating segments and funding credits received by Corporate Treasury within All Other are included in net interest income. The Company includes intersegment eliminations within All Other to reconcile the operating segment results to Citi’s consolidated results.

The accounting policies of these reportable operating segments are the same as those disclosed in Note 1.

The following tables present certain information regarding the Company’s continuing operations by reportable operating segments and All Otheron a managed basis. Performance measurement is based on Income (loss) from continuing operations. These results are used by the chief operating decision maker, both in evaluating the performance of, and in allocating resources to, each of the segments:

(1) See “Performance by Geographic Area” below.

(2) Segment results are presented on a managed basis that excludes divestiture-related impacts related to (i) Citi’s divestitures of its Asia consumer banking businesses and (ii) the planned divestiture of Mexico consumer banking and small business and middle-market banking within All Other—Legacy Franchises. Adjustments are included in Legacy Franchises within All Other and are reflected in the reconciliations above to arrive at Citi’s reported results in the Consolidated Statement of Income.

(3) 2023 includes (i) an approximate $1.059 billion gain on sale recorded in revenue (approximately $727 million after-tax) related to the India consumer banking business sale; (ii) an approximate $403 million gain on sale recorded in revenue (approximately $284 million after-tax) related to the Taiwan consumer banking business sale; and (iii) approximately $372 million (approximately $263 million after-tax) in operating expenses primarily related to separation costs in Mexico and severance costs in the Asia exit markets.

(4) 2022 includes (i) an approximate $535 million (approximately $489 million after-tax) goodwill write-down due to resegmentation and the timing of Asia consumer banking business divestitures; (ii) an approximate $616 million gain on sale recorded in revenue (approximately $290 million after-tax) related to the Philippines consumer banking business sale; and (iii) an approximate $209 million gain on sale recorded in revenue (approximately $115 million after-tax) related to the Thailand consumer banking business sale.

(5) 2021 includes (i) an approximate $680 million loss on sale (approximately $580 million after-tax) related to Citi’s agreement to sell its Australia consumer banking business; and (ii) an approximate $1.052 billion in expenses (approximately $792 million after-tax) primarily related to charges incurred from the voluntary early retirement program (VERP) in connection with the wind-down of Citi’s consumer banking business in Korea.

Performance by Geographic Area

Citi’s operations are highly integrated, and estimates and subjective assumptions have been made to apportion revenue between North America and international operations. These estimates and assumptions are consistent with the allocations used for the Company’s segment reporting.

The Company defines international activities for purposes of this footnote presentation as business transactions that involve clients that reside outside of North America, and the information presented below is based predominantly on the domicile of the client or the booking location from which the client relationship is managed. However, many of the Company’s North America operations serve international businesses.

The following table presents revenues net of interest expense and identifiable assets between North America and international areas:

(1) Primarily reflects the U.S.

(2) International represents the summation of international revenues in Services, Markets, Banking, Wealth and All Other—Legacy Franchises Asia Consumer and Mexico Consumer/SBMM.

(3) Total revenues for the U.K. were approximately $7.6 billion, $9.2 billion and $7.4 billion for 2023, 2022 and 2021, respectively.

(4) Corporate/Other revenues, net of interest expense largely reflects U.S. activities, as well as intersegment eliminations.

(5) The Company’s long-lived assets (Premises and equipment) for the periods presented are not considered significant in relation to its total assets.

4. INTEREST INCOME AND EXPENSE

Interest revenue and Interest expense consisted of the following:

(1)Interest expense on Trading account liabilities of Services, Markets and Banking is reported as a reduction of Interest revenue. Interest revenue and Interest expense on cash collateral positions are reported in interest on Trading account assets and Trading account liabilities, respectively.

(2)Includes assets from businesses held-for-sale (see Note 2) and Brokerage receivables.

(3)Includes liabilities from businesses held-for-sale (see Note 2) and Brokerage payables.

5. COMMISSIONS AND FEES; ADMINISTRATION AND OTHER FIDUCIARY FEES

Commissions and Fees

The primary components of Commissions and fees revenue are investment banking fees, brokerage commissions, credit card and bank card income and deposit-related fees.

Investment banking fees are substantially composed of underwriting and advisory revenues. Such fees are recognized at the point in time when Citigroup’s performance under the terms of a contractual arrangement is completed, which is typically at the closing of a transaction. Reimbursed expenses related to these transactions are recorded as revenue and are included within investment banking fees. In certain instances for advisory contracts, Citi will receive amounts in advance of the deal’s closing. In these instances, the amounts received will be recognized as a liability and not recognized in revenue until the transaction closes. Investment banking fees are earned primarily by Bankingand Markets. See Note 3 for segment results.

Out-of-pocket expenses associated with underwriting activity are deferred and recognized at the time the related revenue is recognized, while out-of-pocket expenses associated with advisory arrangements are expensed as incurred. In general, expenses incurred related to investment banking transactions, whether consummated or not, are recorded in Other operating expenses. The Company has determined that it acts as principal in the majority of these transactions and therefore presents expenses gross within Other operating expenses.

Brokerage commissions primarily include commissions and fees from the following: executing transactions for clients on exchanges and over-the-counter markets; sales of mutual funds and other annuity products; and assisting clients in clearing transactions, providing brokerage services and other such activities. Brokerage commissions are recognized in Commissions and fees at the point in time the associated service is fulfilled, generally on the trade execution date. Certain costs paid to third-party clearing houses and exchanges are recorded net against commission revenue, as the Company is an agent for those services. Sales of certain investment products include a portion of variable consideration associated with the underlying product. In these instances, a portion of the revenue associated with the sale of the product is not recognized until the variable consideration becomes fixed and determinable. Brokerage commissions are earned primarily by Markets and Wealth. See Note 3 for segment results.

Credit card and bank card income is primarily composed of interchange fees, which are earned by card issuers based on card spend volumes, and certain card fees, including annual fees. Costs related to customer reward programs and certain payments to partners (primarily based on program sales, profitability and customer acquisitions) are recorded as a reduction of credit card and bank card income. Citi’s credit card programs have certain partner sharing agreements that vary by partner. These partner sharing agreements are subject to contractually based performance thresholds that, if met, would require Citi to make ongoing payments to the partner. The threshold is based on the profitability of a program and is

generally calculated based on predefined program revenues less predefined program expenses. In most of Citi’s partner sharing agreements, program expenses include net credit losses, which, to the extent that the increase in net credit losses reduces Citi’s liability for the partners’ share for a given program year, would generally result in lower payments to partners in total for that year and vice versa. Further, in some instances, other partner payments are based on program sales and new account acquisitions. Interchange revenues are recognized as earned on a daily basis when Citi’s performance obligation to transmit funds to the payment networks has been satisfied. Annual card fees, net of origination costs, are deferred and amortized on a straight-line basis over a 12-month period. Costs related to card reward programs are recognized when the rewards are earned by the cardholders. Payments to partners are recognized when incurred. Credit card and bank card income is earned primarily by USPB and Services. See Note 3 for segment results.

Deposit-related fees consist of service charges on deposit accounts and fees earned from performing cash management activities and other deposit account services. Such fees are recognized in the period in which the related service is provided. Deposit-related fees are earned primarily by Services and USPB. See Note 3 for segment results.

Transactional service fees primarily consist of fees charged for processing services such as cash management, global payments, clearing, international funds transfer and other trade services. Such fees are recognized as/when the associated service is satisfied, which normally occurs at the point in time the service is requested by the customer and provided by Citi. Transactional service fees are earned primarily by Services. See Note 3 for segment results.

Insurance distribution revenue consists of commissions earned from third-party insurance companies for marketing and selling insurance policies on behalf of such entities. Such commissions are recognized in Commissions and fees at the point in time the associated service is fulfilled, generally when the insurance policy is sold to the policyholder. Sales of certain insurance products include a portion of variable consideration associated with the underlying product. In these instances, a portion of the revenue associated with the sale of the policy is not recognized until the variable consideration becomes fixed and determinable. The Company recognized $188 million, $201 million and $260 million of revenue related to such variable consideration for the years ended December 31, 2023, 2022 and 2021, respectively. These amounts primarily relate to performance obligations satisfied in prior periods. Insurance distribution revenue is earned primarily by Wealthand Legacy Franchises within All Other. See Note 3 for segment results.

Insurance premiums consist of premium income from insurance policies that Citi has underwritten and sold to policyholders. Insurance premiums are earned primarily by Legacy Franchises within All Other. See Note 3 for segment results.

The following table presents Commissions and fees revenue:

(1) For the periods presented, the contract liability amount was negligible.

(2) The Company recognized $448 million, $538 million and $639 million of revenue related to variable consideration for the years ended December 31, 2023, 2022 and 2021, respectively. These amounts primarily relate to performance obligations satisfied in prior periods.

(3) As described above, Citi’s credit card programs have certain partner sharing agreements that vary by partner.

(4) Overdraft fees are accounted for under ASC 310. Citi eliminated overdraft fees, returned item fees and overdraft protection fees beginning in June 2022. Includes overdraft fees of $0 million, $59 million (prior to the elimination of overdraft fees in June 2022) and $107 million for the years ended December 31, 2023, 2022 and 2021, respectively.

(5) Consists primarily of fees earned from structuring and underwriting loan syndications or related financing activity. This activity is accounted for under ASC 310.

(6)Commissions and fees include $(11,367) million, $(11,008) million and $(8,516) million not accounted for under ASC 606, Revenue from Contracts with Customers, for the years ended December 31, 2023, 2022 and 2021, respectively. Amounts reported in Commissions and fees accounted for under other guidance primarily include card-related loan fees, card reward programs and certain partner payments, corporate finance fees, insurance premiums and loan servicing fees.

Administration and Other Fiduciary Fees

Administration and other fiduciary fees revenue is primarily composed of custody fees and fiduciary fees.

The custody product is composed of numerous services related to the administration, safekeeping and reporting for both U.S. and non-U.S. denominated securities. The services offered to clients include trade settlement, safekeeping, income collection, corporate action notification, record-keeping and reporting, tax reporting and cash management. These services are provided for a wide range of securities, including but not limited to equities, municipal and corporate bonds, mortgage- and asset-backed securities, money market instruments, U.S. Treasuries and agencies, derivative instruments, mutual funds, alternative investments and precious metals. Custody fees are recognized as or when the associated promised service is satisfied, which normally occurs at the point in time the service is requested by the customer and provided by Citi. Custody fees are earned primarily by Services. See Note 3 for segment results.

Fiduciary fees consist of trust services and investment management services. As an escrow agent, Citi receives, safekeeps, services and manages clients’ escrowed assets, such as cash, securities, property (including intellectual property), contracts or other collateral. Citi performs its escrow agent duties by safekeeping the assets during the specified time period agreed upon by all parties and therefore earns its revenue evenly during the contract duration. Investment management services consist of managing assets on behalf of Citi’s retail and institutional clients. Revenue from these services primarily consists of asset-based fees for advisory accounts, which are based on the market value of the client’s assets and recognized monthly, when the market value is fixed. In some instances, the Company contracts with third-party advisors and with third-party custodians. The Company has determined that it acts as principal in the majority of these transactions and therefore presents the amounts paid to third parties gross within Other operating expenses. Fiduciary fees are earned primarily by Wealth and Legacy Franchises within All Other. See Note 3 for segment results.

The following table presents Administration and other fiduciary fees revenue:

(1)Administration and other fiduciary fees include $534 million, $557 million and $581 million for the years ended December 31, 2023, 2022 and 2021, respectively, that are not accounted for under ASC 606, Revenue from Contracts with Customers. These generally include guarantee fees.

6. PRINCIPAL TRANSACTIONS

Principal transactions revenue consists of realized and unrealized gains and losses from trading activities. Trading activities include revenues from fixed income, equities, credit and commodities products and foreign exchange transactions that are managed on a portfolio basis and characterized below based on the primary risk managed by each trading desk (as such, the trading desks can be periodically reorganized and thus the risk categories). Not included in the table below is the impact of net interest income related to trading activities, which is an integral part of trading activities’ profitability (see

Note 4 for information about net interest income related to trading activities). Principal transactions include CVA (credit valuation adjustments) and FVA (funding valuation adjustments) on over-the-counter derivatives, and gains (losses) on certain economic hedges on loans in Services, Markets and Banking. These adjustments are discussed further in Note 26.

In certain transactions, Citi incurs fees and presents these fees paid to third parties in operating expenses.

The following table presents Principal transactions revenue:

(1) Includes revenues from government securities, municipal securities, mortgage securities and other debt instruments. Also includes spot and forward trading of currencies and exchange-traded and over-the-counter (OTC) currency options, options on fixed income securities, interest rate swaps, currency swaps, swap options, caps and floors, financial futures, OTC options and forward contracts on fixed income securities.

(2) Includes revenues from foreign exchange spot, forward, option and swap contracts, as well as foreign currency translation (FX translation) gains and losses.

(3) Includes revenues from common, preferred and convertible preferred stock, convertible corporate debt, equity-linked notes and exchange-traded and OTC equity options and warrants.

(4) Primarily includes revenues from crude oil, refined oil products, natural gas and other commodities trades.

(5) Includes revenues from corporate debt, secondary trading loans, mortgage securities, single name and index credit default swaps, and structured credit products.

7. INCENTIVE PLANS

Discretionary Annual Incentive Awards

Citigroup grants immediate cash bonus payments and various forms of immediate and deferred awards as part of its discretionary annual incentive award program involving a large segment of Citigroup’s employees worldwide.

Discretionary annual incentive awards are generally awarded in the first quarter of the year based on the previous year’s performance. Awards valued at less than U.S. $75,000 (or the local currency equivalent) are generally paid entirely in the form of an immediate cash bonus. Pursuant to Citigroup policy and/or regulatory requirements, certain employees are subject to mandatory deferrals of incentive pay and generally receive 15%–60% of their awards in the form of deferred stock or deferred cash stock units. Discretionary annual incentive awards to certain employees in the EU are subject to deferral requirements regardless of the total award value, with at least 50% of the immediate incentive delivered in the form of a stock payment award subject to a restriction on sale or transfer (generally, for 12 months).

For deferred incentive awards granted in 2022 and after, Citigroup changed the annual deferred compensation structure from granting deferred cash awards for certain regulated employees to deferred stock awards. Certain employees located in countries that have regulations or tax advantages for offering deferred cash or deferred cash stock units received those types of awards as a part of their annual incentive compensation rather than deferred stock.

Subject to certain exceptions (principally, for retirement-eligible employees), continuous employment within Citigroup is required to vest in deferred annual incentive awards. Post employment vesting by retirement-eligible employees and participants who meet other conditions is generally conditioned upon their compliance with certain restrictions during the remaining vesting period.

Generally, the deferred awards vest in equal annual installments over three- orfour-year periods. Vested stock awards are delivered in shares of common stock. Deferred cash awards are payable in cash and, except as prohibited by applicable regulatory guidance, earn a fixed notional rate of interest that is paid only if and when the underlying principal award amount vests. Deferred cash stock unit awards are payable in cash at the vesting value of the underlying stock. The value of each deferred stock unit is equal to one share of Citigroup stock, and the award will fluctuate with changes in the stock price. Recipients of deferred stock awards and deferred cash stock unit awards, however, may, except as prohibited by applicable regulatory guidance, be entitled to receive or accrue dividend-equivalent payments during the vesting period. Generally, in the EU, vested shares are subject to a restriction on sale or transfer after vesting, and vested deferred cash awards and deferred cash stock units are subject to hold back (generally, for 6 or 12 months based on the award type).

Stock awards, deferred cash stock units and deferred cash awards are subject to one or more cancellation and clawback provisions that apply in certain circumstances, including gross misconduct.

Outstanding (Unvested) Stock Awards

A summary of the status of unvested stock awards granted as discretionary annual incentive or sign-on and replacement stock awards is presented below:

(1)The weighted-average fair value of the shares granted during 2022 and 2021 was $65.07 and $62.10, respectively.

(2)The weighted-average fair value of the shares vesting during 2023 was approximately $49.86 per share on the vesting date, compared to $63.93 on the grant date.

Citigroup did not capitalize any stock-based compensation costs in 2023, 2022 and 2021. The related income tax benefits for stock-based compensation costs were $392 million, $350 million and $335 million for 2023, 2022 and 2021, respectively. Total unrecognized compensation cost related to unvested stock awards was $1 billion at December 31, 2023. The cost is expected to be recognized over a weighted-average period of 1.7 years.

Performance Share Units

Certain senior executives were awarded performance share units (PSUs) every February from 2020 to 2023, for performance in the year prior to the award date based on two performance metrics. For PSUs awarded in 2020, those metrics were return on average tangible common equity and earnings per share. For PSU awards in 2021, 2022 and 2023, the metrics were average return on tangible common equity and cumulative tangible book value per share. In each year, the metrics were equally weighted.

For all award years, if the total shareholder return is negative over thethree-year performance period, executives may earn no more than 100% of the target PSUs, regardless of the extent to which Citigroup outperforms against performance goals and/or peer firms. The number of PSUs ultimately earned could vary from zero, if performance goals are not met, to as much as 150% of target, if performance goals are meaningfully exceeded. The reported financial metrics during the performance period are adjusted to reflect any mandatory equitable adjustments as required under the applicable award agreements for unusual and non-recurring items as presented to and approved by the Compensation, Performance Management and Culture (CPC) Committee.

For all award years, the value of each PSU is equal to the value ofone share of Citi common stock. Dividend equivalents are forfeitable, or accrued and paid on the number of earned PSUs after the end of the performance period.

PSUs are subject to variable accounting, pursuant to which the associated value of the award will fluctuate with changes in Citigroup’s stock price and the attainment of the specified performance goals for each award. The award is settled solely in cash after the end of each performance period. The value of the award, subject to the performance goals and taking into account any mandatory equitable adjustments as per the terms of the award agreement, is estimated using a simulation model that incorporates multiple valuation assumptions, including the probability of achieving the specified performance goals of each award. The risk-free rate used in the model is based on the applicable U.S. Treasury yield curve. Other significant assumptions for the awards are as follows:

A summary of the performance share unit activity for 2023 is presented below:

(1) The weighted-average grant date fair value per unit awarded in 2022 and 2021 was $71.04 and $78.55, respectively.

(2) No payments were processed for this program in 2023.

Transformation Program

In order to provide an incentive for select employees to effectively execute Citi’s transformation program, in August 2021 the Personnel and Compensation (P&C) Committee of Citigroup’s Board of Directors, the predecessor of the Compensation, Performance Management and Culture (CPC) Committee of Citigroup’s Board of Directors, approved a program for the select employees to earn additional compensation based on the achievement of Citi’s transformation goals from August 2021 through December 2024 and satisfaction of other conditions. Performance under the program is divided into three consecutive periods, ending on December 31, 2022, 2023 and 2024. The awards are subject to variable accounting, pursuant to which the associated value of the award will fluctuate with the attainment of the performance conditions for each tranche and changes to Citigroup’s stock price for the third tranche. Payment for each period will be in cash, in a lump sum, with the third payment indexed to changes in the value of Citi’s common stock from the service inception date through the payment date. Earnings generally will be based on collective performance with respect to Citi’s transformation goals and

will be evaluated and approved by the CPC Committee on an annual basis.

Payments in the event of any category of employment termination or change in job title or employment status are subject to Citi’s discretion. Cancellation and clawback are provided for in the event of misconduct and certain other circumstances. The program applies to senior leaders, other than the CEO, critical to helping deliver a successful transformation with the value of the awards varying based on individual compensation levels.

Stock Option Program

All outstanding options were fully vested at December 31, 2020 and exercised during 2021, with none outstanding at December 31, 2023 and 2022.

Other Variable Incentive Compensation

Citigroup has various incentive plans globally that are used to motivate and reward performance primarily in the areas of sales, operational excellence and customer satisfaction. Participation in these plans is generally limited to employees who are not eligible for discretionary annual incentive awards. Other forms of variable compensation include commissions paid to financial advisors and mortgage loan officers.

Except for awards subject to variable accounting, the total expense recognized for stock awards represents the grant date fair value of such awards, which is generally recognized as a charge to income ratably over the vesting period, other than for awards to retirement-eligible employees and immediately vested awards. Whenever awards are granted or are expected to be granted to retirement-eligible employees, the charge to income is accelerated based on when the applicable conditions for retirement eligibility were or will be met. If the employee is retirement eligible on the grant date, or the award is vested at the grant date, Citi recognizes the expense each year equal to the grant date fair value of the awards that it estimates will be granted in the following year.

Recipients of Citigroup stock awards generally do not have any stockholder rights until shares are delivered upon vesting. Recipients of stock-settled awards and other vested stock awards subject to a sale-restriction period are generally entitled to vote the shares in their award and receive dividends on such shares during the sale-restriction period. Once a stock award vests, the shares delivered to the participant are freely transferable, unless they are subject to a restriction on sale or transfer for a specified period.

All equity awards granted since April 19, 2005 have been made pursuant to stockholder-approved stock incentive plans that are administered by the CPC Committee (or its predecessor), which is composed entirely of independent non-employee directors.

On December 31, 2023, approximately 41.7 million shares of Citigroup common stock were authorized and available for grant under Citigroup’s 2019 Stock Incentive Plan, the only plan from which equity awards are currently granted.

The 2019 Stock Incentive Plan and predecessor plans permit the use of treasury stock or newly issued shares in connection with awards granted under the plans. Treasury shares were used to settle vestings from 2018 to 2022, and for the first quarter of 2023, except where local laws favor newly issued shares. The use of treasury stock or newly issued shares to settle stock awards does not affect the compensation expense recorded in the Consolidated Statement of Income for equity awards.

Incentive Compensation Cost

The following table presents components of compensation expense, relating to the incentive compensation programs described above:

(1) Represents expense for immediately vested stock awards that generally were stock payments in lieu of cash compensation. The expense is generally accrued as cash incentive compensation in the year prior to grant.

(2) All periods include amortization expense for all unvested awards to non-retirement-eligible employees.

(3) Citigroup recognized an additional $46 million of share-based compensation costs in 2023 that is reflected in the Restructuring line (not reflected in the above totals). See Note 9.

8. RETIREMENT BENEFITS

Pension and Postretirement Benefit Plans

The Company has several non-contributory defined benefit pension plans covering certain U.S. employees and has various defined benefit pension and termination indemnity plans covering employees outside the U.S.

The U.S. qualified defined benefit plan was frozen effective January 1, 2008 for most employees. Accordingly, no additional compensation-based contributions have been credited to the cash balance portion of the plan for existing plan participants after 2007. However, certain employees covered under the prior final pay plan formula continue to accrue benefits. The Company also offers postretirement health care and life insurance benefits to certain eligible U.S. retired employees, as well as to certain eligible employees outside the U.S.

The Company also sponsors a number of non-contributory, nonqualified pension plans. These plans, which are unfunded, provide supplemental defined pension benefits to certain U.S. employees. With the exception of certain

employees covered under the prior final pay plan formula, the benefits under these plans were frozen in prior years.

The plan obligations, plan assets and periodic plan expense for the Company’s most significant pension and postretirement benefit plans (Significant Plans) are measured and disclosed quarterly, instead of annually. The Significant Plans captured approximately 90% of the Company’s global pension and postretirement benefit plan obligations as of December 31, 2023. All other plans (All Other Plans) are measured annually with a December 31 measurement date.

Net (Benefit) Expense

The following table summarizes the components of net (benefit) expense recognized in the Consolidated Statement of Income for the Company’s pension and postretirement benefit plans for Significant Plans and All Other Plans. Benefits earned during the year are reported in Compensation and benefits expenses and all other components of the net annual benefit cost are reported in Other operating expenses in the Consolidated Statement of Income:

(1)Curtailment and settlement relate to divestiture and wind-down activities. Total 2023 net expense for non-U.S. plans include curtailment gains and settlement loss related to divestiture of Citi’s consumer businesses in India, Indonesia and Taiwan. Total 2022 net expense for non-U.S. plans includes a $36 million net benefit related to the wind-down of Citi’s consumer banking business in Korea.

Contributions

The Company’s funding practice for U.S. and non-U.S. pension and postretirement benefit plans is generally to fund to minimum funding requirements in accordance with applicable local laws and regulations. The Company may increase its contributions above the minimum required contribution, if appropriate. In addition, management has the ability to change its funding practices. For the U.S. pension plans, there were no required minimum cash contributions for 2023 or 2022.

The following table summarizes the Company’s actual contributions for the years ended December 31, 2023 and 2022, as well as expected Company contributions for 2024. Expected contributions are subject to change, since contribution decisions are affected by various factors, such as market performance, tax considerations and regulatory requirements.

(1) Amounts reported for 2024 are expected amounts.

(2) The U.S. plans include benefits paid directly by the Company for the nonqualified pension plans.

(3) 2022 benefit payments include the wind-down of Citi’s consumer banking business in Korea.

Funded Status and Accumulated Other Comprehensive Income (AOCI)

The following table summarizes the funded status and amounts recognized on the Consolidated Balance Sheet for the Company’s pension and postretirement benefit plans:

(1)In 2022, the actuarial gain was primarily due to the increase in global discount rates partially offset by lower than expected asset returns.

(2)The framework for the Company’s pension oversight process includes monitoring of potential settlement charges for all plans. Settlement accounting is triggered when either the sum of all settlements (including lump sum payments) for the year is greater than service plus interest costs or if more than 10% of the plan’s projected benefit obligation will be settled. Because some of Citi’s Significant Plans are frozen and have no material service cost, settlement accounting may apply in the future.

(3)Curtailment and settlement relate to divestiture and other wind-down activities.

(4)The U.S. qualified plan was fully funded as of January 1, 2023 and no minimum funding was required for 2023. The plan is also expected to be fully funded as of January 1, 2024 with no expected minimum funding requirement for 2024.

(5)The nonqualified plans of the Company are unfunded.

The following table presents the change in AOCI related to the Company’s pension, postretirement and post employment plans:

(1)See Note 21 for further discussion of net AOCI balance.

(2)Includes net-of-tax amounts for certain profit-sharing plans outside the U.S.

(3)Curtailment and settlement relate to divestiture and wind-down activities, including $36 million related to the Korea wind-down in 2022.

At December 31, 2023 and 2022, the aggregate projected benefit obligation (PBO), the aggregate accumulated benefit obligation (ABO) and the aggregate fair value of plan assets are presented for all defined benefit pension plans with a PBO in excess of plan assets and for all defined benefit pension plans with an ABO in excess of plan assets as follows:

(1)As of December 31, 2023 and 2022, only the nonqualified plans’ PBO and ABO exceeded plan assets.

Plan Assumptions

The Company utilizes a number of assumptions to determine plan obligations and expenses. Changes in one or a combination of these assumptions will have an impact on the Company’s pension and postretirement PBO, funded status and (benefit) expense. Changes in the plans’ funded status resulting from changes in the PBO and fair value of plan assets will have a corresponding impact on Accumulated other comprehensive income (loss).

The actuarial assumptions at the respective years ended December 31 in the table below are used to measure the year-end PBO and the net periodic (benefit) expense for the subsequent year (period). Since Citi’s Significant Plans are measured on a quarterly basis, the year-end rates for those plans are used to calculate the net periodic (benefit) expense for the subsequent year’s first quarter.

As a result of the quarterly measurement process, the net periodic (benefit) expense for the Significant Plans is calculated at each respective quarter end based on the preceding quarter-end rates (as presented below for the U.S. and non-U.S. pension and postretirement benefit plans). The actuarial assumptions for All Other Plans are measured annually.

Certain assumptions used in determining pension and postretirement benefit obligations and net benefit expense for the Company’s plans are presented in the following table:

(1) Not material for U.S. plans.

(2) For the years ended 2023 and 2022, the expected return on assets for the Voluntary Employees Beneficiary Association (VEBA) Trust was 3.00%.

(3)The Company has cash balance plans and other plans with promised interest crediting rates. For these plans, the interest crediting rates are set in line with plan rules or country legislation.

(1) Reflects rates utilized to determine the quarterly expense for Significant non-U.S. pension and postretirement benefit plans.

(2) In 2021, due to historically low global interest rates, there were negative discount rates for plans with relatively short duration in certain major markets, such as the Eurozone and Switzerland.

(3) Not material for U.S. plans.

(4) Effective January 1, 2024, there is no change in the expected return on assets for the U.S. pension and postretirement benefit plans of 5.70%. The expected return on assets for the U.S. pension and postretirement benefit plans was adjusted from 5.00% to 5.70% effective January 1, 2023 to reflect a significant change in economic market conditions. The expected return on assets for the U.S. pension and postretirement benefit plans changed from 6.70% to 5.80% effec tive January 1, 2021, reduced to 5.60% effective April 1, 2021 and further reduced to 5.00% effective October 1, 2021. For the year 2023, the expected return on assets for the VEBA Trust was 3.00% and for 2021 and 2022 it was 1.50%.

(5) The Company has cash balance plans and other plans with promised interest crediting rates. For these plans, the interest crediting rates are set in line with plan rules or country legislation.

Discount Rate

The discount rates for the U.S. pension and postretirement benefit plans were selected by reference to a Citigroup-specific analysis using each plan’s specific cash flows and a hypothetical bond portfolio of U.S. high-quality corporate bonds that match each plan’s projected cash flows. The discount rates for the non-U.S. pension and postretirement benefit plans are selected by reference to each plan’s specific cash flows and a market-based yield curve developed from the available local high-quality corporate bonds. However, where developed corporate bond markets do not exist, the discount rates are selected by reference to local government bonds with an estimated premium added to reflect the additional risk for corporate bonds in certain countries. Where available, the resulting plan yields by jurisdiction are compared with published, high-quality corporate bond indices for reasonableness.

Expected Return on Assets

The Company determines its assumptions for the expected return on assets for its U.S. pension and postretirement benefit plans using a “building block” approach, which focuses on ranges of anticipated rates of return for each asset class. A weighted-average range of nominal rates is then determined based on target allocations to each asset class. Market performance over a number of earlier years is evaluated covering a wide range of economic conditions to determine whether there are sound reasons for projecting any past trends.

The Company considers the expected return on assets to be a long-term assessment of return expectations and does not anticipate changing this assumption unless there are significant changes in investment strategy or economic conditions. This contrasts with the selection of the discount rate and certain other assumptions, which are reconsidered annually (or quarterly for the Significant Plans) in accordance with GAAP.

The expected return on assets reflects the expected annual appreciation of the plan assets and reduces the Company’s annual pension expense. The expected return on assets is deducted from the sum of service cost, interest cost and other components of pension expense to arrive at the net pension (benefit) expense.

The following table presents the expected return on assets used in determining the Company’s pension expense compared to the actual return on assets during 2023, 2022 and 2021 for the U.S. pension and postretirement benefit plans:

(1)The expected return on assets for the VEBA Trust was adjusted from 1.50% to 3.00% effective January 1, 2023 to reflect the significant change in economic conditions.

(2)Actual return on assets is presented net of fees.

Sensitivities of Certain Key Assumptions

The U.S. Qualified Pension Plan was frozen in 2008, and as a result, most of the prospective service costs have been eliminated and the gain/loss amortization period was changed to the life expectancy for inactive participants. As a result, pension expense for the U.S. Qualified Pension Plan is driven more by interest cost than service cost, and an increase in the discount rate would increase pension expense, while a decrease in the discount rate would decrease pension expense.

For Non-U.S. Pension Plans that are not frozen (in countries such as Mexico, the U.K. and South Korea), there is more service cost. The pension expense for the Non-U.S. Plans is driven by both service cost and interest cost. An increase in the discount rate generally decreases pension expense due to the greater impact on service cost compared to interest cost.

The following tables summarize the effect on pension expense:

Health Care Cost Trend Rate

Assumed health care cost trend rates were as follows:

Plan Assets

Citigroup’s pension and postretirement benefit plans’ asset allocations for the U.S. plans and the target allocations by asset category based on asset fair values are as follows:

(1)Target asset allocations are set by investment strategy, whereas pension and postretirement assets as of December 31, 2023 and 2022 are based on the underlying investment product. For example, the private equity investment strategy may include underlying investments in real estate within the target asset allocation; however, within pension and postretirement assets, the underlying investment in real estate is reflected in the real estate category and not private equity.

(2)Equity securities in the U.S. pension and postretirement benefit plans do not include any Citigroup common stock at the end of 2023 and 2022.

(3)The VEBA Trust for postretirement benefits is primarily invested in cash equivalents and debt securities in 2023 and 2022 and is not reflected in the table above.

Third-party investment managers and advisors provide their services to Citigroup’s U.S. pension and postretirement benefit plans. Assets are rebalanced as the Company’s Pension Plan Investment Committee deems appropriate. Citigroup’s investment strategy, with respect to its assets, is to maintain a globally diversified investment portfolio across several asset classes that, when combined with Citigroup’s contributions to

the plans, will maintain the plans’ ability to meet all required benefit obligations.

Citigroup’s pension and postretirement benefit plans’ weighted-average asset allocations for the non-U.S. plans and the actual ranges, and the weighted-average target allocations by asset category based on asset fair values, are as follows:

(1)Similar to the U.S. plans, asset allocations for certain non-U.S. plans are set by investment strategy, not by investment product.

Fair Value Disclosure

For information on fair value measurements, including descriptions of Levels 1, 2 and 3 of the fair value hierarchy and the valuation methodology utilized by the Company, see Notes 1 and 26. Investments measured using the NAV per share practical expedient are excluded from Level 1, Level 2 and Level 3 in the tables below.

Certain investments may transfer between the fair value hierarchy classifications during the year due to changes in valuation methodology and pricing sources.

Plan assets by detailed asset categories and the fair value hierarchy are as follows:

(1)The investments of the U.S. pension and postretirement benefit plans are commingled in one trust. At December 31, 2023, the allocable interests of the U.S. pension and postretirement benefit plans were 98.0% and 2.0%, respectively. The investments of the VEBA Trust for postretirement benefits are reflected in the above table.

(1)The investments of the U.S. pension and postretirement benefit plans are commingled in one trust. At December 31, 2022, the allocable interests of the U.S. pension and postretirement benefit plans were 98.0% and 2.0%, respectively. The investments of the VEBA Trust for postretirement benefits are reflected in the above table.

Level 3 Rollforward

The reconciliations of the beginning and ending balances during the year for Level 3 assets are as follows:

Investment Strategy

The Company’s global pension and postretirement funds’ investment strategy is to invest in a prudent manner for the exclusive purpose of providing benefits to participants. The investment strategies are targeted to produce a total return that, when combined with the Company’s contributions to the funds, will maintain the funds’ ability to meet all required benefit obligations. Risk is controlled through diversification of asset types and investments in domestic and international equities, fixed income securities and cash and short-term investments. The target asset allocation in most locations outside the U.S. is primarily in equity and debt securities. These allocations may vary by geographic region and country depending on the nature of applicable obligations and various other regional considerations. The wide variation in the actual range of plan asset allocations for the funded non-U.S. plans is a result of differing local statutory requirements and economic conditions. For example, in certain countries local law requires that all pension plan assets must be invested in fixed income investments, government funds or local-country securities.

Significant Concentrations of Risk in Plan Assets

The assets of the Company’s pension plans are diversified to limit the impact of any individual investment. The U.S. qualified pension plan is diversified across multiple asset classes, with publicly traded fixed income, publicly traded equity, hedge funds and real estate representing the most significant asset allocations. Investments in these four asset classes are further diversified across funds, managers, strategies, vintages, sectors and geographies, depending on the specific characteristics of each asset class. The pension assets for the Company’s non-U.S. Significant Plans are primarily invested in publicly traded fixed income and publicly traded equity securities.

Oversight and Risk Management Practices

The framework for the Company’s pension oversight process includes monitoring of retirement plans by plan fiduciaries and/or management at the global, regional or country level, as appropriate. Independent Risk Management contributes to the risk oversight and monitoring for the Company’s U.S. Qualified Pension Plan and non-U.S. Significant Pension Plans. Although the specific components of the oversight process are tailored to the requirements of each region, country and plan, the following elements are common to the Company’s monitoring and risk management process:

•periodic asset/liability management studies and strategic asset allocation reviews;

•periodic monitoring of funding levels and funding ratios;

•periodic monitoring of compliance with asset allocation guidelines;

•periodic monitoring of asset class and/or investment manager performance against benchmarks; and

•periodic risk capital analysis and stress testing.

Estimated Future Benefit Payments

The Company expects to pay the following estimated benefit payments in future years:

Post Employment Plans

The Company sponsors U.S. post employment plans that provide income continuation and health and welfare benefits to certain eligible U.S. employees on long-term disability.

The following table summarizes the funded status and amounts recognized on the Company’s Consolidated Balance Sheet:

The following table summarizes the net expense recognized in the Consolidated Statement of Income for the Company’s U.S. post employment plans:

Defined Contribution Plans

The Company sponsors defined contribution plans in the U.S. and in certain non-U.S. locations, all of which are administered in accordance with local laws. The most significant defined contribution plan is the Citi Retirement Savings Plan sponsored by the Company in the U.S.

Under the Citi Retirement Savings Plan, eligible U.S. employees received matching contributions of up to 6% of their eligible compensation for 2023 and 2022, subject to statutory limits. In addition, for eligible employees whose eligible compensation is $100,000 or less, a fixed contribution of up to 2% of eligible compensation is provided. All Company contributions are invested according to participants’ individual elections. The following tables summarize the Company contributions for the defined contribution plans:

9. RESTRUCTURING

Citi is pursuing various initiatives to simplify the Company and further align its organizational structure with its business strategy. As part of its overall simplification initiatives, in the fourth quarter of 2023, Citi eliminated the Institutional Clients Group and Personal Banking and Wealth Management layers, exited certain institutional business lines, and consolidated its regional structure, creating one international group, while centralizing client capabilities and streamlining its global staff functions.

Citi incurred restructuring charges of approximately $780 million in the fourth quarter related to the implementation of its organizational simplification initiatives. These charges included severance costs associated with actual headcount reductions (as well as those headcount reductions that were probable and could be reasonably estimated), asset write-downs and other costs. Citi expects to incur additional costs related to its organizational simplification in the first quarter of 2024.

Restructuring charges are recorded as a separate line item within Operating expenses in the Company’s Consolidated Statement of Income. These charges were included within All Other—Corporate/Other.

The following costs associated with these initiatives are included in restructuring charges:

•Personnel costs: severance costs associated with headcount reductions

•Other: costs associated with contract terminations and other direct costs associated with the restructuring, including asset write-downs (non-cash write-downs of capitalized software, which are included in Premises and equipment related to exited businesses)

The following table is a rollforward of the liability related to the restructuring charges:

10. INCOME TAXES

Income Tax Provision

Details of the Company’s income tax provision are presented below:

(1)Includes the tax on realized investment gains and impairment losses resulting in a provision (benefit) of $51 million and $(92) million in 2023, $14 million and $(137) million in 2022 and $169 million and $(57) million in 2021, respectively.

(2)Related to the adoption of “Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures.” See Note 1.

(3)Related to the adoption of “Financial Services—Insurance: Targeted Improvements to the Accounting for Long-Duration Contracts.” See Note 1.

Tax Rate

The reconciliation of the federal statutory income tax rate to the Company’s effective income tax rate applicable to income from continuing operations (before noncontrolling interests and the cumulative effect of accounting changes) for each of the periods indicated is as follows:

(1)Excludes the 2023 FDIC special assessment, which is tax deductible. See Note 30.

(2)See “Deferred Tax Assets” below for a description of the components.

As presented in the table above, Citi’s effective tax rate for 2023 was 27.3%, compared to 19.4% in 2022, due to the geographic mix of earnings and the absence of the prior-year discrete benefits.

Deferred Income Taxes

Deferred income taxes at December 31 related to the following:

Unrecognized Tax Benefits

The following is a rollforward of the Company’s unrecognized tax benefits:

The portions of the total unrecognized tax benefits at December 31, 2023, 2022 and 2021 that, if recognized, would affect Citi’s tax expense is $1.0 billion in each of the respective years. The remaining uncertain tax positions have offsetting amounts in other jurisdictions or are temporary differences.

Interest and penalties (not included in unrecognized tax benefits above) are a component of Provision for income taxes.

(1)Includes $0 million, $3 million and $3 million for non-U.S. penalties in 2023, 2022 and 2021, respectively.

As of December 31, 2023, Citi was under audit by the Internal Revenue Service and other major taxing jurisdictions around the world. It is thus reasonably possible that significant changes in the gross balance of unrecognized tax benefits may occur within the next 12 months. The potential range of amounts that could affect Citi’s effective tax rate is between $0 and $500 million.

The following are the major tax jurisdictions in which the Company and its affiliates operate and the earliest tax year subject to examination:

Non-U.S. Earnings

Non-U.S. pretax earnings approximated $19.4 billion in 2023, $16.2 billion in 2022 and $12.9 billion in 2021. As a U.S. corporation, Citigroup and its U.S. subsidiaries are currently subject to U.S. taxation on all non-U.S. pretax earnings of non-U.S. branches. Beginning in 2018, there is a separate foreign tax credit (FTC) basket for branches. Also, dividends from a non-U.S. subsidiary or affiliate are effectively exempt from U.S. taxation. The Company provides income taxes on the book over tax basis differences of non-U.S. subsidiaries except to the extent that such differences are indefinitely reinvested outside the U.S.

At December 31, 2023, $6.0 billion of basis differences of non-U.S. entities was indefinitely reinvested. At the existing tax rates (including withholding taxes), additional taxes (net of U.S. FTCs) of $2.3 billion would have to be provided if such assertions were reversed.

Deferred Tax Assets

As of December 31, 2023, Citi had a valuation allowance of $3.6 billion, composed of valuation allowances of $1.9 billion on its branch basket FTC carry-forwards, $1.2 billion on its U.S. residual DTA related to its non-U.S. branches, $0.4 billion on local non-U.S. DTAs and $0.1 billion on state net operating loss carry-forwards. There was an increase of $1.2 billion from the December 31, 2022 balance of $2.4 billion. The amount of Citi’s valuation allowances (VA) may change in future years.

In 2023, Citi’s VA for carry-forward FTCs in its branch basket increased by $1.0 billion, primarily due to lower ODL usage.

The level of branch pretax income, the local branch tax rate and the allocations of overall domestic losses (ODL) and expenses for U.S. tax purposes to the branch basket are the main factors in determining the branch VA. There was no branch basket VA release in 2023.

The non-U.S. local VA was unchanged.

The following table summarizes Citi’s DTAs:

(1)All amounts are net of valuation allowances.

(2)Included in the net U.S. federal DTAs of $22.1 billion as of December 31, 2023 were deferred tax liabilities of $2.9 billion that will reverse in the relevant carry-forward period and may be used to support the DTAs.

(3)Consists of non-consolidated tax return NOL carry-forwards that are eventually expected to be utilized in Citigroup’s consolidated tax return.

The following table summarizes the amounts of tax carry-forwards and their expiration dates:

(1)Before valuation allowance.

(2)Pretax.

Although realization is not assured, Citi believes that the realization of the recognized net DTAs of $29.6 billion at December 31, 2023 is more-likely-than-not, based on expectations as to future taxable income in the jurisdictions in which the DTAs arise and consideration of available tax planning strategies (as defined in ASC 740, Income Taxes).

The majority of Citi’s U.S. federal net operating loss carry-forward and all of its New York State and City net operating loss carry-forwards are subject to a carry-forward period of 20 years. This provides enough time to fully utilize the DTAs pertaining to these existing NOL carry-forwards. This is due to Citi’s forecast of sufficient U.S. taxable income and because New York State and City continue to tax Citi’s non-U.S. income.

With respect to the FTCs component of the DTAs, the carry-forward period is 10 years. Utilization of FTCs in any year is generally limited to 21% of foreign source taxable income in that year. However, ODL that Citi has incurred of approximately $7 billion as of December 31, 2023 are allowed to be reclassified as foreign source income to the extent of 50%–100% (at taxpayer’s election) of domestic source income produced in subsequent years. Such resulting foreign source income would help support the realization of the FTC carry-forwards after VA. As noted in the tables above, Citi’s FTC carry-forwards were $1.2 billion ($3.1 billion before VA) as of December 31, 2023, compared to $1.9 billion ($2.8 billion before VA) as of December 31, 2022. The increased VA on branch FTCs is reflected in the “Non-U.S. income tax rate differential” line in the “Tax Rate” section above. Citi believes that it will more-likely-than-not generate sufficient U.S. taxable income within the 10-year carry-forward period to be able to utilize the net FTCs after the VA, after considering any FTCs produced in the tax return for such period, which must be used prior to any carry-forward utilization.

11. EARNINGS PER SHARE

The following table reconciles the income and share data used in the basic and diluted earnings per share (EPS) computations:

(1)Other relevant items include issuance costs of $58 million related to the redemption of preferred stock Series A, B, K and partial J, during 2023, and $14 million in 1% excise tax on preferred stock redemptions during 2023. The preferred issuance costs were reclassified from Additional paid-in capital to Retained earnings upon redemption of the preferred stock. See Note 22.

(2)Due to rounding, earnings per share on continuing operations and discontinued operations may not sum to earnings per share on net income.

(3)During 2023, 2022 and 2021, there wereno weighted-average options outstanding.

(4)Due to rounding, income from continuing operations and discontinued operations may not sum to net income per share—diluted.

12. SECURITIES BORROWED, LOANED AND SUBJECT TO REPURCHASE AGREEMENTS

Securities borrowed and purchased under agreements to resell, at their respective carrying values, consisted of the following:

Securities loaned and sold under agreements to repurchase, at their respective carrying values, consisted of the following:

(1) The above tables do not include securities-for-securities lending transactions of $4.3 billion and $4.4 billion at December 31, 2023 and 2022, respectively, where the Company acts as lender and receives securities that can be sold or pledged as collateral. In these transactions, the Company recognizes the securities received at fair value within Other assets and the obligation to return those securities as a liability within Brokerage payables.

(2) See Note 16.

The resale and repurchase agreements represent collateralized financing transactions. Citi executes these transactions primarily through its broker-dealer subsidiaries to facilitate customer matched-book activity and to efficiently fund a portion of Citi’s trading inventory. Transactions executed by Citi’s bank subsidiaries primarily facilitate customer financing activity.

To maintain reliable funding under a wide range of market conditions, including under periods of stress, Citi manages these activities by taking into consideration the quality of the underlying collateral and stipulating financing tenor. Citi manages the risks in its collateralized financing transactions by conducting daily stress tests to account for changes in capacity, tenors, haircut, collateral profile and client actions. In addition, Citi maintains counterparty diversification by establishing concentration triggers and assessing counterparty reliability and stability under stress.

It is the Company’s policy to take possession of the underlying collateral, monitor its market value relative to the amounts due under the agreements and, when necessary,

require prompt transfer of additional collateral in order to maintain contractual margin protection. For resale and repurchase agreements, when necessary, the Company posts additional collateral in order to maintain contractual margin protection.

Collateral typically consists of government and government-agency securities, corporate and municipal bonds, equities and mortgage- and other asset-backed securities.

The resale and repurchase agreements are generally documented under industry standard agreements that allow the prompt close-out of all transactions (including the liquidation of securities held) and the offsetting of obligations to return cash or securities by the non-defaulting party, following a payment default or other type of default under the relevant master agreement. Events of default generally include (i) failure to deliver cash or securities as required under the transaction, (ii) failure to provide or return cash or securities as used for margining purposes, (iii) breach of representation, (iv) cross-default to another transaction entered into among the parties, or, in some cases, their affiliates, and (v) a repudiation of obligations under the agreement. The counterparty that receives the securities in these transactions is generally unrestricted in its use of the securities, with the exception of transactions executed on a tri-party basis, where the collateral is maintained by a custodian and operational limitations may restrict its use of the securities.

A substantial portion of the resale and repurchase agreements is recorded at fair value as the Company elected the fair value option, as described in Notes 26 and 27. The remaining portion is carried at the amount of cash initially advanced or received, plus accrued interest, as specified in the respective agreements.

The securities borrowing and lending agreements also represent collateralized financing transactions similar to the resale and repurchase agreements. Collateral typically consists of government and government-agency securities and corporate debt and equity securities.

Similar to the resale and repurchase agreements, securities borrowing and lending agreements are generally documented under industry standard agreements that allow the prompt close-out of all transactions (including the liquidation of securities held) and the offsetting of obligations to return cash or securities by the non-defaulting party, following a payment default or other default by the other party under the relevant master agreement. Events of default and rights to use securities under the securities borrowing and lending agreements are similar to the resale and repurchase agreements referenced above.

A substantial portion of securities borrowing and lending agreements is recorded at the amount of cash advanced or received. The remaining portion is recorded at fair value as the Company elected the fair value option for certain securities borrowed and loaned portfolios, as described in Note 27. With respect to securities loaned, the Company receives cash collateral in an amount generally in excess of the market value of the securities loaned. The Company monitors the market value of securities borrowed and securities loaned on a daily basis and posts or obtains additional collateral in order to maintain contractual margin protection.

The enforceability of offsetting rights incorporated in the master netting agreements for resale and repurchase agreements, and securities borrowing and lending agreements, is evidenced to the extent that (i) a supportive legal opinion has been obtained from counsel of recognized standing that provides the requisite level of certainty regarding the enforceability of these agreements and (ii) the exercise of rights by the non-defaulting party to terminate and close out transactions on a net basis under these agreements will not be stayed or avoided under applicable law upon an event of default including bankruptcy, insolvency or similar proceeding.

A legal opinion may not have been sought or obtained for certain jurisdictions where local law is silent or sufficiently ambiguous to determine the enforceability of offsetting rights or where adverse case law or conflicting regulation may cast doubt on the enforceability of such rights. In some jurisdictions and for some counterparty types, the insolvency

law for a particular counterparty type may be nonexistent or unclear as overlapping regimes may exist. For example, this may be the case for certain sovereigns, municipalities, central banks and U.S. pension plans.

The following tables present the gross and net resale and repurchase agreements and securities borrowing and lending

agreements and the related offsetting amounts permitted under ASC 210-20-45. The tables also include amounts related to financial instruments that are not permitted to be offset under ASC 210-20-45, but would be eligible for offsetting to the extent that an event of default has occurred and a legal opinion supporting enforceability of the offsetting rights has been obtained. Remaining exposures continue to be secured by financial collateral, but the Company may not have sought or been able to obtain a legal opinion evidencing enforceability of the offsetting right.

(1)Includes financial instruments subject to enforceable master netting agreements that are permitted to be offset under ASC 210-20-45.

(2)Includes financial instruments subject to enforceable master netting agreements that are not permitted to be offset under ASC 210-20-45, but would be eligible for offsetting to the extent that an event of default has occurred and a legal opinion supporting enforceability of the offsetting right has been obtained.

(3)Remaining exposures continue to be secured by financial collateral, but the Company may not have sought or been able to obtain a legal opinion evidencing enforceability of the offsetting right.

The following tables present the gross amounts of liabilities associated with repurchase agreements and securities lending agreements by remaining contractual maturity:

The following tables present the gross amounts of liabilities associated with repurchase agreements and securities lending agreements by class of underlying collateral:

13. BROKERAGE RECEIVABLES AND BROKERAGE PAYABLES

The Company has receivables and payables for financial instruments sold to and purchased from brokers, dealers and customers, which arise in the ordinary course of business. Citi is exposed to risk of loss from the inability of brokers, dealers or customers to pay for purchases or to deliver the financial instruments sold, in which case Citi would have to sell or purchase the financial instruments at prevailing market prices. Credit risk is reduced to the extent that an exchange or clearing organization acts as a counterparty to the transaction and replaces the broker, dealer or customer in question.

Citi seeks to protect itself from the risks associated with customer activities by requiring customers to maintain margin collateral in compliance with regulatory and internal guidelines. Margin levels are monitored daily, and customers deposit additional collateral as required. Where customers cannot meet collateral requirements, Citi may liquidate sufficient underlying financial instruments to bring the customer into compliance with the required margin level.

Exposure to credit risk is impacted by market volatility, which may impair the ability of clients to satisfy their obligations to Citi. Credit limits are established and closely monitored for customers and for brokers and dealers engaged in forwards, futures and other transactions deemed to be credit sensitive.

Brokerage receivablesand Brokerage payables consisted of the following:

(1) Includes brokerage receivables and payables recorded by Citi broker-dealer entities that are accounted for in accordance with the AICPA Accounting Guide for Brokers and Dealers in Securities as codified in ASC 940-320.

14. INVESTMENTS

The following table presents Citi’s investments by category:

(1)Carried at adjusted amortized cost basis, net of any ACL.

(2)Unrealized gains and losses are recognized in earnings.

(3)Impairment losses and adjustments to the carrying value as a result of observable price changes are recognized in earnings. See “Non-Marketable Equity Securities Not Carried at Fair Value” below.

(4)Represents shares issued by the Federal Reserve Bank, Federal Home Loan Banks and certain exchanges of which Citigroup is a member.

(5)Includes $25 million and $27 million of investments in funds for which the fair values are estimated using the net asset value of the Company’s ownership interest in the funds at December 31, 2023 and 2022, respectively.

(6)Not included in the balances above is approximately $2 billion of accrued interest receivable at December 31, 2023 and 2022, which is included in Other assets on the Consolidated Balance Sheet. The Company does not recognize an allowance for credit losses on accrued interest receivable for AFS and HTM debt securities, consistent with its non-accrual policy, which results in timely write-off of accrued interest. The Company did not reverse through interest income any accrued interest receivables for the years ended December 31, 2023 and 2022.

The following table presents interest and dividend income on investments:

The following table presents realized gains and losses on the sales of investments, which exclude impairment losses:

Debt Securities Available-for-Sale

The amortized cost and fair value of AFS debt securities were as follows:

(1)The Company invests in mortgage- and asset-backed securities, which are typically issued by VIEs through securitization transactions. The Company’s maximum exposure to loss from these VIEs is equal to the carrying amount of the securities, which is reflected in the table above. See Note 23 for mortgage- and asset-backed securitizations in which the Company has other involvement.

(2)In January 2023, Citi adopted ASU 2022-01. Upon adoption, Citi transferred $3.3 billion of mortgage-backed securities from HTM classification to AFS classification as allowed under the ASU. At the time of transfer, the securities were in an unrealized gain position of $0.1 billion, which was recorded in AOCI upon transfer. See Note 1.

(3)Amortized cost includes unallocated portfolio layer cumulative basis adjustments of $0.2 billion as of December 31, 2023. Gross unrealized gains and gross unrealized (losses) on mortgage-backed securities excluding the effect of unallocated portfolio layer cumulative basis adjustments were $368 million and $(683) million, respectively, as of December 31, 2023.

At December 31, 2023, the amortized cost of AFS debt securities for those in a loss position exceeded their fair value by $3,794 million. Of the $3,794 million, $861 million represented unrealized losses on AFS debt securities that have been in a gross unrealized loss position for less than a year and, of these,82% were rated investment grade; and $2,933 million represented unrealized losses on AFS debt securities that have been in a gross unrealized loss position for a year or more and, of these,96% were rated investment grade. Of the $2,933 million, $1,269 million represents U.S. Treasury and federal agency securities.

The following table presents the fair value of AFS debt securities that have been in an unrealized loss position:

The following table presents the amortized cost and fair value of AFS debt securities by contractual maturity dates:

(1)Weighted-average yields are weighted based on the amortized cost of each security. The effective yield considers the contractual coupon, amortization of premiums and accretion of discounts and excludes the effects of any related hedging derivatives.

(2)Includes mortgage-backed securities of U.S. government-sponsored agencies. The Company invests in mortgage- and asset-backed securities, which are typically issued by VIEs through securitization transactions. See Note 23 for additional information about mortgage- and asset-backed securitizations in which the Company has other involvement.

(3)Amortized cost excludes unallocated portfolio layer cumulative basis adjustments of $0.2 billion as of December 31, 2023.

(4)Includes corporate, asset-backed and other debt securities.

Debt Securities Held-to-Maturity

The carrying value and fair value of debt securities HTM were as follows:

(1)Amortized cost is reported net of ACL of $95 million and $120 million at December 31, 2023 and 2022, respectively.

(2)The Company invests in mortgage- and asset-backed securities. These securitizations are generally considered VIEs. The Company’s maximum exposure to loss from these VIEs is equal to the carrying amount of the securities, which is reflected in the table above. See Note 23 for mortgage- and asset-backed securitizations in which the Company has other involvement.

(3)In January 2023, Citi adopted ASU 2022-01. Upon adoption, Citi transferred $3.3 billion of mortgage-backed securities from HTM classification to AFS classification as allowed under the ASU. At the time of transfer, the securities were in an unrealized gain position of $0.1 billion, which was recorded in AOCI upon transfer. See Note 1.

The Company has the positive intent and ability to hold these securities to maturity or, where applicable, until the exercise of any issuer call option, absent any unforeseen significant changes in circumstances, including deterioration in credit or changes in regulatory capital requirements.

The net unrealized losses classified in AOCI for HTM debt securities primarily relate to debt securities previously classified as AFS that were transferred to HTM, and include any cumulative fair value hedge adjustments. The net unrealized loss amount also includes any non-credit-related changes in fair value of HTM debt securities that have suffered credit impairment recorded in earnings. The AOCI balance related to HTM debt securities is amortized as an adjustment of yield, in a manner consistent with the accretion of any difference between the carrying value at the transfer date and par value of the same debt securities.

The following table presents the carrying value and fair value of HTM debt securities by contractual maturity dates:

(1)Amortized cost is reported net of ACL of $95 million at December 31, 2023.

(2)Weighted-average yields are weighted based on the amortized cost of each security. The effective yield considers the contractual coupon, amortization of premiums and accretion of discounts and excludes the effects of any related hedging derivatives.

(3)Includes corporate and asset-backed securities.

HTM Debt Securities Delinquency and Non-Accrual

Details

Citi did not have any HTM debt securities that were delinquent or on non-accrual status at December 31, 2023 and 2022.

There were no purchased credit-deteriorated HTM debt securities held by the Company as of December 31, 2023 and 2022.

Evaluating Investments for Impairment—AFS Debt Securities

The Company conducts periodic reviews of all AFS debt securities with unrealized losses to evaluate whether the impairment resulted from expected credit losses or from other factors and to evaluate the Company’s intent to sell such securities.

An AFS debt security is impaired when the current fair value of an individual AFS debt security is less than its amortized cost basis.

The Company recognizes the entire difference between amortized cost basis and fair value in earnings for impaired AFS debt securities that Citi has an intent to sell or for which Citi believes it will more-likely-than-not be required to sell prior to recovery of the amortized cost basis. However, for those AFS debt securities that the Company does not intend to sell and is not likely to be required to sell, only the credit-related impairment is recognized in earnings by recording an allowance for credit losses. Any remaining fair value decline for such securities is recorded in AOCI. The Company does not consider the length of time that the fair value of a security is below its amortized cost when determining if a credit loss exists.

For AFS debt securities, credit losses exist where Citi does not expect to receive contractual principal and interest cash flows sufficient to recover the entire amortized cost basis of a security. The allowance for credit losses is limited to the amount by which the AFS debt security’s amortized cost basis exceeds its fair value. The allowance is increased or decreased if credit conditions subsequently worsen or improve. Reversals of credit losses are recognized in earnings.

The Company’s review for impairment of AFS debt securities generally entails:

•identification and evaluation of impaired investments;

•consideration of evidential matter, including an evaluation of factors or triggers that could cause individual positions to qualify as credit impaired and those that would not support credit impairment; and

•documentation of the results of these analyses, as required under business policies.

The sections below describe the Company’s process for identifying expected credit impairments for debt security types that have the most significant unrealized losses as of December 31, 2023.

Agency Mortgage-Backed Securities

Citi records no allowances for credit losses on U.S. government-agency-guaranteed mortgage-backed securities, because the Company expects to incur no credit losses in the event of default due to a history of incurring no credit losses and due to the nature of the counterparties.

State and Municipal Securities

The process for estimating credit losses in Citigroup’s AFS state and municipal bonds is primarily based on a credit analysis that incorporates third-party credit ratings. Citi monitors the bond issuers and any insurers providing default protection in the form of financial guarantee insurance. The average external credit rating, disregarding any insurance, is Aa2/AA. In the event of an external rating downgrade or other indicator of credit impairment (i.e., based on instrument-specific estimates of cash flows or probability of issuer default), the subject bond is specifically reviewed for adverse changes in the amount or timing of expected contractual principal and interest payments.

For AFS state and municipal bonds with unrealized losses that Citi plans to sell or would more-likely-than-not be required to sell prior to recovery of value, the full impairment is recognized in earnings. For AFS state and municipal bonds where Citi has no intent to sell and it is not more-likely-than-not that the Company will be required to sell, Citi records an allowance for expected credit losses for the amount it expects not to collect, capped at the difference between the bond’s amortized cost basis and fair value.

Equity Method Investments

Management assesses equity method investments that have fair values that are less than their respective carrying values for other-than-temporary impairment (OTTI). Fair value is measured as price multiplied by quantity if the investee has publicly listed securities. If the investee is not publicly listed, other methods are used (see Note 26).

For impaired equity method investments that Citi plans to sell prior to recovery of value or would more-likely-than-not be required to sell, with no expectation that the fair value will recover prior to the expected sale date, the full impairment is recognized as OTTI in Other revenue regardless of severity and duration. The measurement of the OTTI does not include partial projected recoveries subsequent to the balance sheet date.

For impaired equity method investments that management does not plan to sell and is not more-likely-than-not to be required to sell prior to recovery of value, the evaluation of whether an impairment is other-than-temporary is based on (i) whether and when an equity method investment will recover in value and (ii) whether the investor has the intent and ability to hold that investment for a period of time sufficient to recover the value. The determination of whether the impairment is considered other-than-temporary considers the following indicators:

•the cause of the impairment and the financial condition and near-term prospects of the issuer, including any specific events that may influence the operations of the issuer;

•the intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery in market value; and

•the length of time and extent to which fair value has been less than the carrying value.

Recognition and Measurement of Impairment

The following table presents total impairment on AFS investments recognized in earnings:

Allowance for Credit Losses on AFS Debt Securities

The allowance for credit losses on AFS debt securities held that the Company does not intend to sell nor will likely be required to sell was $8 million and $3 million as of December 31, 2023 and 2022, respectively.

Non-Marketable Equity Securities Not Carried at

Fair Value

Non-marketable equity securities are required to be measured at fair value with changes in fair value recognized in earnings unless (i) the measurement alternative is elected or (ii) the investment represents Federal Reserve Bank and Federal Home Loan Bank stock or certain exchange seats that continue to be carried at cost.

The election to measure a non-marketable equity security using the measurement alternative is made on an instrument-by-instrument basis. Under the measurement alternative, an equity security is carried at cost plus or minus changes resulting from observable prices in orderly transactions for the identical or a similar investment of the same issuer. The carrying value of the equity security is adjusted to fair value on the date of an observed transaction. Fair value may differ from the observed transaction price due to a number of factors, including marketability adjustments and differences in rights and obligations when the observed transaction is not for the identical investment held by Citi.

Equity securities under the measurement alternative are also assessed for impairment. On a quarterly basis, management qualitatively assesses whether each equity security under the measurement alternative is impaired. Impairment indicators that are considered include, but are not limited to, the following:

•a significant deterioration in the earnings performance, credit rating, asset quality or business prospects of the investee;

•a significant adverse change in the regulatory, economic or technological environment of the investee;

•a significant adverse change in the general market condition of either the geographical area or the industry in which the investee operates;

•a bona fide offer to purchase, an offer by the investee to sell or a completed auction process for the same or similar investment for an amount less than the carrying amount of that investment; and

•factors that raise significant concerns about the investee’s ability to continue as a going concern, such as negative cash flows from operations, working capital deficiencies or noncompliance with statutory capital requirements or debt covenants.

When the qualitative assessment indicates that the equity security is impaired, its fair value is determined. If the fair value of the investment is less than its carrying value, the investment is written down to fair value through earnings.

Below is the carrying value of non-marketable equity securities measured using the measurement alternative at December 31, 2023 and 2022:

Below are amounts recognized in earnings and life-to-date amounts for non-marketable equity securities measured using the measurement alternative:

(1) See Note 26 for additional information on these nonrecurring fair value measurements.

A similar impairment analysis is performed for non-marketable equity securities carried at cost. For the years ended December 31, 2023 and 2022, there wasno impairment loss recognized in earnings for non-marketable equity securities carried at cost.

15. LOANS

Citigroup loans are reported intwo categories: corporate and consumer. These categories are classified primarily according to the operating segment, reporting unit and component that manage the loans in addition to the nature of the obligor, with corporate loans generally made for corporate institutional and public sector clients around the world and consumer loans to retail and small business customers.

Corporate Loans

Corporate loans represent loans and leases managed by Services, Markets, Bankingand the Mexico SBMM component of All Other—Legacy Franchises. The following table presents information by corporate loan type:

(1)North America includes the U.S., Canada and Puerto Rico. Mexico is included in offices outside North America. The classification between offices in North America and outside North America is based on the domicile of the booking unit. The difference between the domicile of the booking unit and the domicile of the managing unit is not material.

(2)Loans secured primarily by real estate.

(3)Corporate loans are net of unearned income of ($917) million and ($797) million at December 31, 2023 and 2022, respectively. Unearned income on corporate loans primarily represents loan origination fees, net of certain direct origination costs, that are deferred and recognized as Interest income over the lives of the related loans.

(4)Not included in the balances above is approximately $2 billion of accrued interest receivable at December 31, 2023 and 2022, which is included in Other assets on the Consolidated Balance Sheet.

(5)Accrued interest receivable considered to be uncollectible is reversed through interest income. Amounts reversed were not material for the years ended December 31, 2023 and 2022, respectively.

(6)Represents fair value hedge basis adjustments related to portfolio layer method hedges of mortgage and real estate loans, which are not allocated to individual loans in the portfolio. See Note 24.

The Company sold and/or reclassified to held-for-sale $5.7 billion and $5.0 billion of corporate loans during the years ended December 31, 2023 and 2022, respectively. The Company did not have significant purchases of corporate loans classified as held-for-investment for the years ended December 31, 2023 or 2022.

Lease Financing

Citi is a lessor in the power, railcars, shipping and aircraft sectors, where the Company has executed operating, direct financing and leveraged leases. Citi’s $0.3 billion of lease financing receivables, as of December 31, 2023, is composed of approximately equal balances of direct financing lease receivables and net investments in leveraged leases. Citi uses the interest rate implicit in the lease to determine the present value of its lease financing receivables. Interest income on direct financing and leveraged leases during the year ended December 31, 2023 was not material.

The Company’s operating leases, where Citi is a lessor, are not significant to the Consolidated Financial Statements.

Delinquency Status

Citi generally does not manage corporate loans on a delinquency basis. Corporate loans are placed on a cash (non-accrual) basis when it is determined, based on actual experience and a forward-looking assessment of the collectibility of the loan in full, that the payment of interest or principal is doubtful or when interest or principal is 90 days past due, except when the loan is well collateralized and in the process of collection. Any interest accrued on impaired corporate loans and leases is reversed at 90 days and charged against current earnings, and interest is thereafter included in earnings only to the extent actually received in cash. When there is doubt regarding the ultimate collectibility of principal, all cash receipts are thereafter applied to reduce the recorded investment in the loan. While corporate loans are generally managed based on their internally assigned risk rating (see further discussion below), the following tables present delinquency information by corporate loan type.

Corporate Loan Delinquencies and Non-Accrual Details at December 31, 2023

Corporate Loan Delinquencies and Non-Accrual Details at December 31, 2022

(1)Corporate loans that are 90 days past due are generally classified as non-accrual. Corporate loans are considered past due when principal or interest is contractually due but unpaid.

(2)Non-accrual loans generally include those loans that are 90 days or more past due or those loans for which Citi believes, based on actual experience and a forward-looking assessment of the collectibility of the loan in full, that the payment of interest and/or principal is doubtful.

(3)Loans less than 30 days past due are presented as current.

(4)The Total loans column includes loans at fair value, which are not included in the various delinquency columns and, therefore, the tables’ total rows will not cross-foot.

(5)Excludes $93 million of unallocated portfolio layer cumulative basis adjustments at December 31, 2023.

Citigroup has a risk management process to monitor, evaluate and manage the principal risks associated with its corporate loan portfolio. As part of its risk management process, Citi assigns numeric risk ratings to its corporate loan facilities based on quantitative and qualitative assessments of the obligor and facility. These risk ratings are reviewed at least annually or more often if material events related to the obligor or facility warrant. Factors considered in assigning the risk ratings include financial condition of the obligor, qualitative assessment of management and strategy, amount and sources of repayment, amount and type of collateral and guarantee arrangements, amount and type of any contingencies associated with the obligor and the obligor’s industry and geography.

The obligor risk ratings are defined by ranges of default probabilities. The facility risk ratings are defined by ranges of loss norms, which are the product of the probability of default and the loss given default. The investment-grade rating categories are similar to the category BBB-/Baa3 and above as defined by S&P and Moody’s. Loans classified according to the bank regulatory definitions as special mention, substandard, doubtful and loss will have risk ratings within the non-investment-grade categories.

Corporate Loans Credit Quality Indicators

(1)Recorded investment in a loan includes net deferred loan fees and costs, unamortized premium or discount, less any direct write-downs.

(2)There were no significant revolving line of credit arrangements that converted to term loans during the year.

(3)Held-for-investment loans are accounted for on an amortized cost basis.

(4)Includes certain short-term loans with less than one year in tenor.

(5)Other includes installment and other, lease financing and loans to government and official institutions.

(6)Loans at fair value include loans to commercial and industrial, financial institutions, mortgage and real estate and other.

(7)Excludes $93 million of unallocated portfolio layer cumulative basis adjustments at December 31, 2023.

Collateral-dependent loans and leases, where repayment is expected to be provided solely by the sale of the underlying collateral with no other available and reliable sources of repayment, are written down to the lower of carrying value or collateral value, less cost to sell. Cash-basis loans are returned to an accrual status when all contractual principal and interest amounts are reasonably assured of repayment and there is a sustained period of repayment performance, generallysix months, in accordance with the contractual terms of the loan.

Corporate Gross Credit Losses

The table below details gross credit losses recognized during the year ended December 31, 2023, by year of loan origination:

(1) Other includes installment and other, lease financing and loans to government and official institutions.

Non-Accrual Corporate Loans

The following table presents non-accrual loan information by corporate loan type and interest income recognized on non-accrual corporate loans:

(1)Recorded investment in a loan includes net deferred loan fees and costs, unamortized premium or discount, less any direct write-downs.

(2)Interest income recognized for the year ended December 31, 2023, 2022 and 2021 was $38 million, $66 million and $54 million, respectively.

Corporate Loan Modifications to Borrowers Experiencing Financial Difficulty

Citi seeks to modify certain corporate loans to borrowers experiencing financial difficulty to reduce Citi’s exposure to loss, often providing the borrower with an opportunity to work through financial difficulties. Each modification is unique to the borrower’s individual circumstances. The following table details corporate loan modifications granted during the year ended December 31, 2023 to borrowers experiencing financial difficulty by type of modification granted and the financial effect of those modifications. Citi defines a corporate loan modification to a borrower experiencing financial difficulty as a modification of a loan classified as substandard or worse at the time of modification.

(1)The above table reflects activity for loans outstanding as of the end of the reporting period. The balances are not significant as a percentage of the total carrying values of loans by class of receivable as of December 31, 2023.

(2)Commitments to lend to borrowers experiencing financial difficulty that were granted modifications totaled $1.2 billion as of December 31, 2023.

(3)The allowance for corporate loans, including modified loans, is based on the borrower’s overall financial performance. Charge-offs for amounts deemed uncollectible may be recorded at the time of the modification or may have already been recorded in prior periods such that no charge-off is required at the time of modification.

(4)Payment delays either for principal or interest payments had an immaterial financial impact.

(5)Other includes installment and other, lease financing and loans to government and official institutions.

The following table presents the Company’s corporate troubled debt restructurings (TDRs), under previous GAAP, prior to the Company’s adoption of ASU No. 2022-02 on January 1, 2023:

(1)TDRs involving changes in the amount or timing of principal payments may involve principal forgiveness or deferral of periodic and/or final principal payments. Because forgiveness of principal is rare for corporate loans, modifications typically have little to no impact on the loans’ projected cash flows and thus little to no impact on the allowance established for the loans. Charge-offs for amounts deemed uncollectible may be recorded at the time of the restructuring or may have already been recorded in prior periods such that no charge-off is required at the time of the modification.

(2)TDRs involving changes in the amount or timing of interest payments may involve a below-market interest rate.

(3)Other includes installment and other, lease financing and loans to government and official institutions.

Performance of Modified Corporate Loans

The following table presents the delinquencies of modified corporate loans to borrowers experiencing financial difficulty. It includes loans that were modified during the year ended December 31, 2023: