$ 5,197,000,000

$ 6,773,000,000

$ 5,197,000,000

$ 6,773,000,000

$ 6,823,000,000

Other assets

15,201,000,000

14,312,000,000

15,201,000,000

14,312,000,000

14,542,000,000

Mortgage loans

24,561,000,000

$ 25,810,000,000

$ 27,007,000,000

$ 28,938,000,000

28,929,000,000

$ 29,072,000,000

$ 29,511,000,000

$ 29,862,000,000

106,316,000,000

117,374,000,000

$ 115,029,000,000

Provision for Loan and Lease Losses

$ 216,000,000

Summary of Significant Accounting Policies

Organization

Fannie Mae is a leading source of financing for mortgages in the United States. We are a shareholder-owned corporation organized as a government-sponsored entity (“GSE”) and existing under the Federal National Mortgage Association Charter Act (the “Charter Act” or our “charter”). Our charter is an act of Congress, and we have a mission under that charter to provide liquidity and stability to the residential mortgage market and to promote access to mortgage credit. As such, we are subject to government oversight and regulation. Our regulators include the Federal Housing Finance Agency (“FHFA”), the U.S. Department of Housing and Urban Development (“HUD”), the U.S. Securities and Exchange Commission (“SEC”), and the U.S. Department of the Treasury (“Treasury”). The U.S. government does not guarantee our securities or other obligations.

We operate in the secondary mortgage market, primarily working with lenders who originate loans to borrowers. We do not originate loans or lend money directly to consumers in the primary mortgage market. Instead, we securitize mortgage loans originated by lenders into Fannie Mae mortgage-backed securities (“MBS”) that we guarantee; purchase mortgage loans and mortgage-related securities, primarily for securitization and sale at a later date; manage mortgage credit risk; and engage in other activities that increase the supply of affordable housing.

We have two reportable business segments: Single-Family and Multifamily. The Single-Family business operates in the secondary mortgage market relating to loans secured by properties containing four or fewer residential dwelling units. The Multifamily business operates in the secondary mortgage market relating primarily to loans secured by properties containing five or more residential units. We describe the management reporting and allocation process used to generate our segment results in “Note 10, Segment Reporting.”

Conservatorship

On September 7, 2008, the Secretary of the Treasury and the Director of FHFA announced several actions taken by Treasury and FHFA regarding Fannie Mae, which included: (1) placing us in conservatorship, with FHFA acting as our conservator, and (2) the execution of a senior preferred stock purchase agreement by our conservator, on our behalf, and Treasury, pursuant to which we issued to Treasury both senior preferred stock and a warrant to purchase common stock.

Under the Federal Housing Enterprises Financial Safety and Soundness Act of 1992, as amended, including by the Federal Housing Finance Regulatory Reform Act of 2008 (together, the “GSE Act”), the conservator immediately succeeded to (1) all rights, titles, powers and privileges of Fannie Mae, and of any stockholder, officer or director of Fannie Mae with respect to Fannie Mae and its assets, and (2) title to the books, records and assets of any other legal custodian of Fannie Mae. The conservator subsequently issued an order that provided for our Board of Directors to exercise specified authorities. The conservator also provided instructions regarding matters for which conservator decision or notification is required. The conservator retains the authority to amend or withdraw its order and instructions at any time.

The conservator has the power to transfer or sell any asset or liability of Fannie Mae (subject to limitations and post-transfer notice provisions for transfers of qualified financial contracts) without any approval, assignment of rights or consent of any party. However, mortgage loans and mortgage-related assets that have been transferred to a Fannie Mae MBS trust must be held by the conservator for the beneficial owners of the Fannie Mae MBS and cannot be used to satisfy the general creditors of Fannie Mae. Neither the conservatorship nor the terms of our agreements with Treasury change our obligation to make required payments on our debt securities or perform under our mortgage guaranty obligations.

The conservatorship has no specified termination date and there continues to be significant uncertainty regarding our future, including how long we will continue to exist in our current form, the extent of our role in the market, the level of government support of our business, how long we will be in conservatorship, what form we will have and what ownership interest, if any, our current common and preferred stockholders will hold in us after the conservatorship is terminated and whether we will continue to exist following conservatorship. Under the GSE Act, FHFA must place us into receivership if the Director of FHFA makes a written determination that our assets are less than our obligations or if

we have not been paying our debts, in either case, for a period of 60 days. In addition, the Director of FHFA may place us into receivership at his discretion at any time for other reasons set forth in the GSE Act, including if we are critically undercapitalized or if we are undercapitalized and have no reasonable prospect of becoming adequately capitalized. Should we be placed into receivership, different assumptions would be required to determine the carrying value of our assets, which could lead to substantially different financial results. Treasury has made a commitment under the senior preferred stock purchase agreement to provide funding to us under certain circumstances if we have a net worth deficit. We are not aware of any plans of FHFA (1) to fundamentally change our business model, or (2) to reduce the aggregate amount available to or held by the company under our capital structure, which includes the senior preferred stock purchase agreement.

Senior Preferred Stock Purchase Agreement, Senior Preferred Stock and Warrant

Senior Preferred Stock Purchase Agreement

Under our senior preferred stock purchase agreement with Treasury, in September 2008 we issued Treasury one million shares of senior preferred stock and a warrant to purchase shares of our common stock. The senior preferred stock purchase agreement and the dividend and liquidation provisions of the senior preferred stock were amended in January 2021 pursuant to a letter agreement between us, through FHFA in its capacity as conservator, and Treasury. The terms of the agreement, including Treasury’s funding commitment, and the dividend and liquidation provisions of the senior preferred stock are described more fully in “Note 11, Equity.”

The January 2021 letter agreement made a number of changes to the covenants in the senior preferred stock purchase agreement, as well as to the terms of the senior preferred stock. Because these changes were made subsequent to December 31, 2020, there was no impact to our 2020 financial statements as a result of the changes in the January 2021 letter agreement. These changes include the following:

•The dividend provisions of the senior preferred stock were amended to permit us to retain increases in our net worth until our net worth exceeds the amount of adjusted total capital necessary for us to meet the capital requirements and buffers under the enterprise regulatory capital framework discussed in “Note 12, Regulatory Capital Requirements.” After the “capital reserve end date,” which is defined as the last day of the second consecutive fiscal quarter during which we have maintained capital equal to, or in excess of, all of the capital requirements and buffers under the enterprise regulatory capital framework, the amount of quarterly dividends to Treasury will be equal to the lesser of any quarterly increase in our net worth and a 10% annual rate on the then-current liquidation preference of the senior preferred stock.

•At the end of each fiscal quarter, through and including the capital reserve end date, the liquidation preference of the senior preferred stock will be increased by an amount equal to the increase in our net worth, if any, during the immediately prior fiscal quarter.

•We may issue and retain up to $70 billion in proceeds from the sale of common stock without Treasury’s prior consent, provided that (1) Treasury has already exercised its warrant in full, and (2) all currently pending significant litigation relating to the conservatorship and to an amendment to the senior preferred stock purchase agreement made in August 2012 has been resolved, which may require Treasury’s assent.

•FHFA may release us from conservatorship without Treasury’s consent after (1) all currently pending significant litigation relating to the conservatorship and to the August 2012 amendment to the senior preferred stock purchase agreement has been resolved, and (2) our common equity tier 1 capital, together with any other common stock that we may issue in a public offering, equals or exceeds 3% of our “adjusted total assets” under our enterprise regulatory capital framework.

•New restrictive covenants were added that will impact both our single-family and multifamily business activities.

We are still evaluating the appropriate accounting for this amendment to the senior preferred stock purchase agreement. The amendment will be accounted for as either a modification or an extinguishment of the existing instrument. To the extent that the amendment is required to be accounted for as a modification, there will be no change in the carrying value of the senior preferred stock, as it will be accounted for as an extension of the existing arrangement. However, to the extent that the amendment qualifies as an extinguishment, we will record the amended senior preferred stock at fair value with the difference between the current carrying value and the amended stock’s fair value recorded in accumulated deficit.

Senior Preferred Stock

For information about the senior preferred stock, see “Note 11, Equity.”

Warrant

On September 7, 2008, we issued to Treasury a warrant to purchase, at a nominal price, shares of our common stock equal to 79.9% of the total common stock outstanding on a fully diluted basis on the date the warrant is exercised. The warrant may be exercised, in whole or in part, at any time on or before September 7, 2028. We recorded the warrant at fair value in our stockholders’ equity as a component of additional paid-in-capital. The fair value of the warrant was calculated using the Black-Scholes Option Pricing Model. Since the warrant has an exercise price of $0.00001 per share, the model is insensitive to the risk-free rate and volatility assumptions used in the calculation and the share value of the warrant is equal to the price of the underlying common stock. We estimated that the fair value of the warrant at issuance was $3.5 billion based on the price of our common stock on September 8, 2008, which was after the dilutive effect of the warrant had been reflected in the market price. Subsequent changes in the fair value of the warrant are not recognized in our financial statements. If the warrant is exercised, the stated value of the common stock issued will be reclassified as “Common stock” in our consolidated balance sheets. Because the warrant’s exercise price per share is considered non-substantive (compared to the market price of our common stock), the warrant was determined to have characteristics of non-voting common stock, and thus is included in the computation of basic and diluted earnings (loss) per share. The weighted-average shares of common stock outstanding for 2020, 2019 and 2018 included shares of common stock that would be issuable upon full exercise of the warrant issued to Treasury.

Impact of U.S. Government Support

We continue to rely on support from Treasury to eliminate any net worth deficits we may experience in the future, which would otherwise trigger our being placed into receivership. Based on consideration of all the relevant conditions and events affecting our operations, including our reliance on the U.S. government, we continue to operate as a going concern and in accordance with FHFA’s provision of authority.

In addition to MBS issuances, we fund our business through the issuance of short-term and long-term debt securities in the domestic and international capital markets. Accordingly, we are subject to “roll over,” or refinancing, risk on our outstanding debt. Our ability to issue long-term debt has been strong primarily due to actions taken by the federal government to support our business and our debt securities.

We believe that continued federal government support of our business, as well as our status as a government-sponsored enterprise, are essential to maintaining our current level of access to debt funding. Changes or perceived changes in federal government support of our business without appropriate capitalization of the company could materially and adversely affect our liquidity, financial condition and results of operations. Changes or perceived changes in our status as a government-sponsored enterprise could also materially and adversely affect our liquidity, financial condition and results of operations. In addition, due to our reliance on the U.S. government’s support, our access to debt funding or the cost of debt funding also could be materially adversely affected by a change or perceived change in the creditworthiness of the U.S government. A downgrade in our credit ratings could reduce demand for our debt securities and increase our borrowing costs. Future changes or disruptions in the financial markets could significantly impact the amount, mix and cost of funds we obtain, which also could increase our liquidity and “roll over” risk and have a material adverse impact on our liquidity, financial condition and results of operations.

Related Parties

Because Treasury holds a warrant to purchase shares of Fannie Mae common stock equal to 79.9% of the total number of shares of Fannie Mae common stock, we and Treasury are deemed related parties. As of December 31, 2020, Treasury held an investment in our senior preferred stock with an aggregate liquidation preference of $142.2 billion. See “Senior Preferred Stock Purchase Agreement, Senior Preferred Stock and Warrant” above for additional information on transactions under this agreement.

FHFA’s control of both Fannie Mae and Freddie Mac has caused Fannie Mae, FHFA and Freddie Mac to be deemed related parties. Additionally, Fannie Mae and Freddie Mac jointly own Common Securitization Solutions, LLC (“CSS”), a limited liability company created to operate a common securitization platform; as such, CSS is deemed a related party. As a part of our joint ownership, Fannie Mae, Freddie Mac and CSS are parties to a limited liability company agreement that sets forth the overall framework for the joint venture, including Fannie Mae’s and Freddie Mac’s rights and responsibilities as members of CSS. Fannie Mae, Freddie Mac and CSS are also parties to a customer services agreement that sets forth the terms under which CSS provides mortgage securitization services to us and Freddie Mac, including the operation of the common securitization platform as well as an administrative services agreement. CSS operates as a separate company from us and Freddie Mac, with all funding and limited administrative support services and other resources provided to it by us and Freddie Mac through our capital contributions.

In the ordinary course of business, Fannie Mae may purchase and sell securities issued by Treasury and Freddie Mac. These transactions occur on the same terms as those prevailing at the time for comparable transactions with unrelated

parties. Since June 2019, some of the structured securities we issue are backed in whole or in part by Freddie Mac securities. Fannie Mae and Freddie Mac each have agreed to indemnify the other party for losses caused by: its failure to meet its payment or other specified obligations under the trust agreements pursuant to which the underlying resecuritized securities were issued; its failure to meet its obligations under the customer services agreement; its violations of laws; or with respect to material misstatements or omissions in offering documents, ongoing disclosures and related materials relating to the underlying resecuritized securities. Additionally, we make regular income tax payments to and receive tax refunds from the Internal Revenue Service (“IRS”), a bureau of Treasury. We received a refund of $4.0 billion, including $340 million of interest, from the IRS during the year ended December 31, 2020 for income tax adjustments related to tax years 2010 through 2016.

Transactions with Treasury

Our administrative expenses were reduced by $19 million, $20 million and $24 million for the years ended December 31, 2020, 2019 and 2018, respectively, due to reimbursements from Treasury and Freddie Mac for expenses incurred as program administrator for Treasury’s Home Affordable Modification Program (“HAMP”) and other initiatives under Treasury’s Making Home Affordable Program.

In December 2011, Congress enacted the Temporary Payroll Cut Continuation Act of 2011 (“TCCA”) which, among other provisions, required that we increase our single-family guaranty fees by at least 10 basis points and remit this increase to Treasury. Effective April 1, 2012, we increased the guaranty fee on all single-family residential mortgages delivered to us by 10 basis points. In 2012, FHFA and Treasury advised us to remit this fee increase to Treasury with respect to all loans acquired by us on or after April 1, 2012 and before January 1, 2022, and to continue to remit these amounts to Treasury on and after January 1, 2022 with respect to loans we acquired before this date until those loans are paid off or otherwise liquidated. The resulting fee revenue and expense are recorded in “Interest income: Mortgage loans” and “TCCA fees,” respectively, in our consolidated statements of operations and comprehensive income.

In 2020, FHFA provided guidance that we are not required to accrue or remit TCCA fees to Treasury with respect to loans backing MBS trusts that have been delinquent for four months or longer. Once payments on such loans resume, we will resume accrual and remittance to Treasury of the associated TCCA fees on the loans.

We recognized $2.7 billion, $2.4 billion and $2.3 billion in TCCA fees during the years ended December 31, 2020, 2019 and 2018, respectively, of which $697 million and $626 million had not been remitted as of December 31, 2020 and 2019, respectively.

The GSE Act requires us to set aside certain funding obligations, a portion of which is attributable to Treasury’s Capital Magnet Fund. In December 2014, FHFA directed us to set aside amounts for these contributions during each fiscal year, except for any fiscal year for which a draw from Treasury was made under the terms of the senior preferred stock purchase agreement or in which such allocation or transfer would cause such a draw. These funding obligations, recognized in “Other expenses, net” in our consolidated statements of operations and comprehensive income, were measured as the product of 4.2 basis points and the unpaid principal balance of our total new business purchases for the respective period, with 35% of this amount payable to Treasury’s Capital Magnet Fund. We recognized $211 million, $98 million and $75 million in “Other expenses, net” in connection with Treasury’s Capital Magnet Fund for the years ended December 31, 2020, 2019 and 2018, respectively. We paid $98 million and $75 million to Treasury’s Capital Magnet Fund in 2020 and 2019, respectively. In 2021, we expect to pay $211 million to Treasury’s Capital Magnet Fund based on our new business purchases in 2020.

On January 14, 2021, we, through FHFA acting on our behalf in its capacity as our conservator, and Treasury, entered into a letter agreement modifying the terms of the senior preferred stock purchase agreement and senior preferred stock held by Treasury. These modifications and other specified provisions of the letter agreement are described under “Senior Preferred Stock Purchase Agreement, Senior Preferred Stock and Warrant” above.

Transactions with FHFA

The GSE Act authorizes FHFA to establish an annual assessment for regulated entities, including Fannie Mae, which is payable on a semi-annual basis (April and October), for FHFA’s costs and expenses, as well as to maintain FHFA’s working capital. We recognized FHFA assessment fees, which are recorded in “Administrative expenses” in our consolidated statements of operations and comprehensive income, of $139 million, $121 million and $110 million for the years ended December 31, 2020, 2019 and 2018, respectively.

Transactions with CSS and Freddie Mac

We contributed capital to CSS, the company we jointly own with Freddie Mac, of $88 million, $105 million and $135 million for the years ended December 31, 2020, 2019 and 2018, respectively.

Basis of Presentation

The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). To conform to our current-period presentation, we have reclassified certain amounts reported in our prior periods’ consolidated financial statements.

Presentation of Advances to Lenders

Advances to lenders represent our payments of cash in exchange for the receipt of mortgage loans from lenders in a transfer that is accounted for as a secured lending arrangement. These transfers primarily occur when we provide early funding to lenders for loans that they will subsequently either sell to us or securitize into a Fannie Mae MBS that they will deliver to us. Early lender funding advances have terms up to 60 days and earn a short-term market rate of interest. Advances to lenders has been presented as a separate line item for all periods presented, as increased mortgage refinance activity resulted in a higher balance at period end. In prior periods, advances to lenders were recorded in “Other assets.”

Presentation of Freestanding Credit Enhancement Expense and Recoveries

Freestanding credit enhancements primarily include our Connecticut Avenue Securities® (“CAS”) and Credit Insurance Risk TransferTM (“CIRTTM”) programs, enterprise-paid mortgage insurance (“EPMI”), and certain lender risk-sharing arrangements, including our multifamily Delegated Underwriting and Servicing (“DUS®”) program. We have revised our presentation of the expenses and recoveries associated with these programs as described below.

Credit Enhancement Expense

Credit enhancement expense consists of costs associated with our freestanding credit enhancements. We exclude from this expense costs related to our CAS transactions accounted for as debt instruments and credit risk transfer programs accounted for as derivative instruments. Credit enhancement expense has been presented as a separate line item for all periods presented, as these expenses have become a more significant driver of our results of operations. In prior periods, credit enhancement expenses were recorded in “Other expenses, net.”

Change in Expected Credit Enhancement Recoveries

Change in expected credit enhancement recoveries consists of the change in benefits recognized from our freestanding credit enhancements, including any realized amounts. Benefits, if any, from our CAS, CIRT and EPMI programs previously recorded in “Fee and other income” have been reclassified to “Change in expected credit enhancement recoveries” for all periods presented. Benefits from other lender risk-sharing programs, including our multifamily DUS program, were recorded as a reduction of credit-related expense in periods prior to 2020. However, with our adoption of the Current Expected Credit Loss standard on January 1, 2020, benefits from freestanding credit enhancements are no longer recorded as a reduction of credit-related expenses. These benefits from lender risk-sharing have been reclassified into “Change in expected credit enhancement recoveries” on a prospective basis beginning January 1, 2020.

Presentation of Yield Maintenance Fees

Prior period multifamily yield maintenance fees have been reclassified to conform to the current-period presentation. Multifamily yield maintenance fees, or prepayment premiums, are fees that a borrower pays when they prepay their loan. For multifamily loans held in a consolidated trust, a portion of the yield maintenance fee is typically passed through to the holders of the trust certificate. As of January 1, 2020, we classify all yield maintenance fees as interest income. For consolidated loans, the portion of the fee passed through to the certificate holders of the trust is classified as interest expense. Previously, we classified multifamily yield maintenance fees as interest income only when the fee was associated with a loan refinancing, otherwise the fee was classified as fee and other income. The portion of the fees passed through to the certificate holders of the trust were previously classified as interest expense only when the fee was associated with a loan refinancing, otherwise the fee was classified as other expense. The changes in presentation have been applied retrospectively to all periods presented and were immaterial for prior periods.

Use of Estimates

Preparing consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect our reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities as of the dates of our consolidated financial statements, as well as our reported amounts of revenues and expenses during the reporting periods. Management has made significant estimates in a variety of areas including, but not limited to, our allowance for loan losses. Actual results could be different from these estimates.

Principles of Consolidation

Our consolidated financial statements include our accounts as well as the accounts of the other entities in which we have a controlling financial interest. All intercompany balances and transactions have been eliminated. The typical condition for a controlling financial interest is ownership of a majority of the voting interests of an entity. A controlling financial interest may also exist in an entity such as a variable interest entity (“VIE”) through arrangements that do not involve voting interests.

VIE Assessment

We have interests in various entities that are considered VIEs. A VIE is an entity (1) that has total equity at risk that is not sufficient to finance its activities without additional subordinated financial support from other entities, (2) where the group of equity holders does not have the power to direct the activities of the entity that most significantly impact the entity’s economic performance, or the obligation to absorb the entity’s expected losses or the right to receive the entity’s expected residual returns, or both, or (3) where the voting rights of some investors are not proportional to their obligations to absorb the expected losses of the entity, their rights to receive the expected residual returns of the entity, or both, and substantially all of the entity’s activities either involve or are conducted on behalf of an investor that has disproportionately few voting rights.

We determine whether an entity is a VIE by performing a qualitative analysis, which requires certain subjective decisions including, but not limited to, the design of the entity, the variability that the entity was designed to create and pass along to its interest holders, the rights of the parties and the purpose of the arrangement.

The primary types of VIE entities with which we are involved are securitization trusts guaranteed by us via lender swap and portfolio securitization transactions, special-purpose vehicles (“SPVs”) associated with certain credit risk transfer programs, limited partnership investments in low-income housing tax credit (“LIHTC”) and other housing partnerships, as well as mortgage and asset-backed trusts that were not created by us. For more information on the primary types of VIE entities with which we are involved, see “Note 2, Consolidations and Transfers of Financial Assets.”

Primary Beneficiary Determination

If an entity is a VIE, we consider whether our variable interest in that entity causes us to be the primary beneficiary. We are deemed to be the primary beneficiary of a VIE when we have both (1) the power to direct the activities of the VIE that most significantly impact the entity’s economic performance, and (2) exposure to benefits and/or losses that could potentially be significant to the entity. The primary beneficiary of the VIE is required to consolidate and account for the assets, liabilities, and noncontrolling interests of the VIE in its consolidated financial statements. The assessment of which party has the power to direct the activities of the VIE may require significant management judgment when (1) more than one party has power or (2) more than one party is involved in the design of the VIE but no party has the power to direct the ongoing activities that could be significant.

We continually assess whether we are the primary beneficiary of the VIEs with which we are involved and therefore may consolidate or deconsolidate a VIE through the duration of our involvement. Examples of certain events that may change whether or not we consolidate the VIE include a change in the design of the entity or a change in our ownership in the entity.

Measurement of Consolidated Assets and Liabilities

When we are the transferor of assets into a VIE that we consolidate at the time of the transfer, we continue to recognize the assets and liabilities of the VIE at the amounts that they would have been recognized if we had not transferred them, and no gain or loss is recognized. For all other VIEs that we consolidate (that is, those for which we are not the transferor), we recognize the assets and liabilities of the VIE in our consolidated financial statements at fair value, and we recognize a gain or loss for the difference between (1) the fair value of the consideration paid, fair value of noncontrolling interests and the reported amount of any previously held interests, and (2) the net amount of the fair value of the assets and liabilities recognized upon consolidation. However, for the securitization trusts established under our lender swap program, no gain or loss is recognized if the trust is consolidated at formation as there is no difference in the respective fair value of (1) and (2) above. We record gains or losses that are associated with the consolidation of VIEs as a component of “Investment gains, net” in our consolidated statements of operations and comprehensive income.

If we cease to be deemed the primary beneficiary of a VIE, we deconsolidate the VIE. We use fair value to measure the initial cost basis for any retained interests that are recorded upon the deconsolidation of a VIE. Any difference between the fair value and the previous carrying amount of our investment in the VIE is recorded in “Investment gains, net” in our consolidated statements of operations and comprehensive income.

Purchase/Sale of Fannie Mae Securities

We actively purchase and sell guaranteed MBS that have been issued through lender swap and portfolio securitization transactions. The accounting for the purchase and sale of our guaranteed MBS issued by the trusts differs based on the characteristics of the securitization trusts and whether the trusts are consolidated.

Uniform Mortgage-Backed Securities (“UMBS”)

Uniform Mortgage-Backed Securities (“UMBS”) are common mortgage-backed securities issued by both Fannie Mae and Freddie Mac to finance fixed-rate mortgage loans backed by one- to four-unit single-family properties. We and Freddie Mac began issuing UMBS in June 2019. We and Freddie Mac also began resecuritizing UMBS certificates into structured securities in June 2019. The structured securities backed by UMBS that we issue include Supers, which are single-class resecuritization transactions, Real Estate Mortgage Investment Conduit securities (“REMICs”) and interest-only and principal-only strip securities (“SMBS”), which are multi-class resecuritization transactions.

Since June 2019, we have resecuritized UMBS, Supers and other structured securities issued by Freddie Mac. The mortgage loans that serve as collateral for Freddie Mac-issued UMBS are not held in trusts that are consolidated by Fannie Mae. When we include Freddie Mac securities in our structured securities, we are subject to additional credit risk because we guarantee securities that were not previously guaranteed by Fannie Mae. However, Freddie Mac continues to guarantee the payment of principal and interest on the underlying Freddie Mac securities that we have resecuritized. We have concluded that this additional credit risk is negligible because of the funding commitment available to Freddie Mac through its senior preferred stock purchase agreement with Treasury. Prior to June 2019, the vast majority of underlying assets of our resecuritization trusts were limited to Fannie Mae securities that were collateralized by mortgage loans held in consolidated trusts.

Single-Class Securitization Trusts

We create single-class securitization trusts to issue single-class Fannie Mae MBS (including UMBS) that evidence an undivided interest in the mortgage loans held in the trust. Investors in single-class Fannie Mae MBS receive principal and interest payments in proportion to their percentage ownership of the MBS issuance. We guarantee to each single-class securitization trust that we will supplement amounts received by the securitization trust as required to permit timely payments of principal and interest on the related Fannie Mae MBS. This guaranty exposes us to credit losses on the loans underlying Fannie Mae MBS.

Single-class securitization trusts are used for lender swap and portfolio securitization transactions. A lender swap transaction occurs when a mortgage lender delivers a pool of single-family mortgage loans to us, which we immediately deposit into an MBS trust. The MBS are then issued to the lender in exchange for the mortgage loans. A portfolio securitization transaction occurs when we purchase mortgage loans from third-party sellers for cash and later deposit these loans into an MBS trust. The securities issued through a portfolio securitization are then sold to investors for cash. We consolidate single-class securitization trusts that are issued under these programs when our role as guarantor and master servicer provides us with the power to direct matters, such as the servicing of the mortgage loans, that impact the credit risk to which we are exposed. In contrast, we do not consolidate single-class securitization trusts when other organizations have the power to direct these activities (for example, when the loan collateral is subject to a Federal Housing Administration guaranty and related Servicing Guide).

When we purchase single-class Fannie Mae MBS issued from a consolidated trust, we account for the transaction as an extinguishment of the related debt in our consolidated financial statements. We record a gain or loss on the extinguishment of such debt to the extent that the purchase price of the MBS does not equal the carrying value of the related consolidated debt reported in our consolidated balance sheets (including unamortized premiums, discounts or other cost basis adjustments) at the time of purchase. When we sell single-class Fannie Mae MBS that were issued from a consolidated trust, we account for the transaction as the issuance of debt in our consolidated financial statements. We amortize the related premiums, discounts and other cost basis adjustments into income over the contractual life of the MBS.

If a single-class securitization trust is not consolidated, we account for the purchase and subsequent sale of such securities as the transfer of an investment security in accordance with the accounting guidance for transfers of financial assets.

Single-Class Resecuritization Trusts

Fannie Mae single-class resecuritization trusts are created by depositing MBS into a new securitization trust for the purpose of aggregating multiple mortgage-related securities into one combined security. Single-class resecuritization securities pass through directly to the holders of the securities all of the cash flows of the underlying MBS held in the trust. Since June 2019, these securities can be collateralized directly or indirectly by cash flows from underlying

securities issued by Fannie Mae, Freddie Mac, or a combination of both. Resecuritization trusts backed directly or indirectly only by Fannie Mae MBS are non-commingled resecuritization trusts. Resecuritization trusts collateralized directly or indirectly by cash flows either in part or in whole from Freddie Mac MBS are commingled resecuritization trusts.

Securities issued by our non-commingled single-class resecuritization trusts are backed solely by Fannie Mae MBS, and the guaranty we provide on the trust does not subject us to additional credit risk because we have already provided a guarantee on the underlying securities. Further, the securities issued by our non-commingled single-class resecuritization trusts pass through all of the cash flows of the underlying Fannie Mae MBS directly to the holders of the securities. Accordingly, these securities are deemed to be substantially the same as the underlying Fannie Mae MBS collateral. Additionally, our involvement with these trusts does not provide us with any incremental rights or powers that would enable us to direct any activities of the trusts. We have concluded that we are not the primary beneficiary of and, as a result, we do not consolidate our non-commingled single-class resecuritization trusts. Therefore, we account for purchases and sales of securities issued by non-commingled single-class resecuritization trusts as extinguishments and issuances of the underlying MBS debt, respectively.

Securities issued by our commingled single-class resecuritization trusts are backed in whole or in part by Freddie Mac securities. As discussed in “Note 6, Financial Guarantees,” the guaranty we provide to the commingled single-class resecuritization trust subjects us to additional credit risk to the extent that we are providing a guaranty for the timely payment of principal and interest on the underlying Freddie Mac securities that we have not previously guaranteed. Accordingly, securities issued by our commingled resecuritization trusts are not deemed to be substantially the same as the underlying collateral. We do not have any incremental rights or powers related to commingled single-class resecuritization trusts that would enable us to direct any activities of the underlying trust. As a result, we have concluded that we are not the primary beneficiary of, and therefore do not consolidate, our commingled single-class resecuritization trusts unless we have the unilateral right to dissolve the trust. We have this right when we hold 100% of the beneficial interests issued by the resecuritization trust. Therefore, we account for purchases and sales of these securities as the transfer of an investment security.

Multi-Class Resecuritization Trusts

Multi-class resecuritization trusts are trusts we create to issue multi-class Fannie Mae structured securities, including REMICs and SMBS, in which the cash flows of the underlying mortgage assets are divided, creating several classes of securities, each of which represents a beneficial ownership interest in a separate portion of cash flows. We guarantee to each multi-class resecuritization trust that we will supplement amounts received by the trusts as required to permit timely guaranty payments on the related Fannie Mae structured securities. Since June 2019, these multi-class structured securities can be collateralized, directly or indirectly, by securities issued by Fannie Mae, Freddie Mac or a combination of both.

The guaranty we provide to our non-commingled multi-class resecuritization trusts does not subject us to additional credit risk, because the underlying assets are Fannie Mae-issued securities for which we have already provided a guaranty. However, for commingled multi-class structured securities, we are subject to additional credit risk to the extent we are providing a guaranty for the timely payment of principal and interest on the underlying Freddie Mac securities that we have not previously guaranteed. For both commingled and non-commingled multi-class resecuritization trusts, we may also be exposed to prepayment risk via our ownership of securities issued by these trusts. We do not have the ability via our involvement with a multi-class resecuritization trust to impact either the credit risk or prepayment risk to which we are exposed. Therefore, we have concluded that we do not have the characteristics of a controlling financial interest and do not consolidate multi-class resecuritization trusts unless we have the unilateral right to dissolve the trust as noted below.

Securities issued by multi-class resecuritization trusts do not directly pass through all of the cash flows of the underlying securities, and therefore the issued and underlying securities are not considered substantially the same. Accordingly, we account for purchases and sales of securities issued by the multi-class resecuritization trusts as purchases and sales of investment securities.

Since June 2019, we may include UMBS, Supers and other structured securities that are either issued or backed by securities issued by Freddie Mac in our resecuritization trusts.

As a result, we adopted a consolidation threshold for multi-class resecuritization trusts that is based on our ability to unilaterally dissolve the resecuritization trust. This ability exists only when we hold 100% of the outstanding beneficial interests issued by the resecuritization trust. This change in the consolidation threshold was applied prospectively upon the introduction of UMBS in the second quarter of 2019 and prior-period amounts were not recast. Prior to the introduction of UMBS, we consolidated multi-class resecuritization trusts when we held a substantial portion of the

outstanding beneficial interests issued by the trust. Our adoption of the updated consolidation threshold did not have a material impact on our consolidated financial statements.

Transfers of Financial Assets

We evaluate each transfer of financial assets to determine whether the transfer qualifies as a sale. If a transfer does not meet the criteria for sale treatment, the transferred assets remain in our consolidated balance sheets and we record a liability to the extent of any proceeds received in connection with the transfer. We record transfers of financial assets in which we surrender control of the transferred assets as sales.

When a transfer that qualifies as a sale is completed, we derecognize all assets transferred and recognize all assets obtained and liabilities incurred at fair value. The difference between the carrying basis of the assets transferred and the fair value of the net proceeds from the sale is recorded as a component of “Investment gains, net” in our consolidated statements of operations and comprehensive income. Retained interests are primarily derived from transfers associated with our portfolio securitizations in the form of Fannie Mae securities. We separately describe the subsequent accounting, as well as how we determine fair value, for our retained interests in the “Investments in Securities” section of this note.

We enter into repurchase agreements that involve contemporaneous trades to purchase and sell securities. These transactions are accounted for as secured financings since the transferor has not relinquished control over the transferred assets. These transactions are reported as securities purchased under agreements to resell and securities sold under agreements to repurchase in our consolidated balance sheets except for securities purchased under agreements to resell on an overnight basis, which are included in cash and cash equivalents in our consolidated balance sheets.

Cash and Cash Equivalents, Restricted Cash and Statements of Cash Flows

Short-term investments that have a maturity at the date of acquisition of three months or less and are readily convertible to known amounts of cash are generally considered cash equivalents. We also include securities purchased under agreements to resell on an overnight basis in “cash and cash equivalents” in our consolidated balance sheets. We may pledge as collateral certain short-term investments classified as cash equivalents.

“Restricted cash” in our consolidated balance sheets represents cash advanced to the extent such amounts are due to, but have not yet been remitted to, MBS certificateholders. Similarly, when we or our servicers collect and hold cash that is due to certain Fannie Mae MBS trusts in advance of our requirement to remit these amounts to the trusts, we recognize the collected cash amounts as restricted cash. In addition, we recognize restricted cash when we and our servicers advance payments on delinquent loans to consolidated Fannie Mae MBS trusts. Cash may also be recognized as restricted cash as a result of restrictions related to certain consolidated partnership funds as well as for certain collateral arrangements for which we do not have the right to use the cash.

In the presentation of our consolidated statements of cash flows, we present cash flows from derivatives that do not contain financing elements and mortgage loans held for sale at acquisition as operating activities. We present cash flows from federal funds sold and securities purchased under agreements to resell or similar arrangements as investing activities and cash flows from federal funds purchased and securities sold under agreements to repurchase as financing activities in “Other, net.” We classify cash flows from trading securities based on their nature and purpose.

We classify cash flows related to mortgage loans acquired as held-for-investment, including loans of Fannie Mae and loans of consolidated trusts, as either investing activities (for principal repayments or sales proceeds) or operating activities (for interest received from borrowers included as a component of our net income). Cash flows related to debt securities issued by consolidated trusts are classified as either financing activities (for repayments of principal to certificateholders) or operating activities (for interest payments to certificateholders included as a component of our net income). We distinguish between the payments and proceeds related to the debt of Fannie Mae and the debt of consolidated trusts, as applicable. We present our non-cash activities in the consolidated statements of cash flows at the associated unpaid principal balance.

Investments in Securities

Securities Classified as Trading or Available-for-Sale (“AFS”)

We classify and account for our securities as either trading or available-for-sale (“AFS”). We measure trading securities at fair value in our consolidated balance sheets with unrealized and realized gains and losses included as a component of “Fair value gains (losses), net” in our consolidated statements of operations and comprehensive income. We include interest and dividends on securities in our consolidated statements of operations and comprehensive income. Interest

income includes the amortization of cost basis adjustments, including premiums and discounts, recognized as a yield adjustment using the interest method over the contractual term of the security. We measure AFS securities at fair value in our consolidated balance sheets, with unrealized gains and losses included in accumulated other comprehensive income, net of income taxes. We recognize realized gains and losses on AFS securities when securities are sold. We calculate the gains and losses using the specific identification method and record them in “Investment gains, net” in our consolidated statements of operations and comprehensive income. As of December 31, 2020, we did not have any securities classified as held-to-maturity.

Fannie Mae MBS included in “Investments in securities”

When we own Fannie Mae MBS issued by unconsolidated trusts, we do not derecognize any components of the guaranty assets, guaranty obligations, or any other outstanding recorded amounts associated with the guaranty transaction because our contractual obligation to the MBS trust remains in force until the trust is liquidated. We determine the fair value of Fannie Mae MBS based on observable market prices because most Fannie Mae MBS are actively traded. For any subsequent purchase or sale, we continue to account for any outstanding recorded amounts associated with the guaranty transaction on the same basis of accounting.

Impairment of Available-for-Sale Debt Securities

An AFS debt security is impaired if the fair value of the investment is less than its amortized cost basis. In these circumstances, we separate the difference between the amortized cost basis of the security and its fair value into the amount representing the credit loss, which we recognize as an allowance in “Benefit (provision) for credit losses” in our consolidated statements of operations and comprehensive income, and the amount related to all other factors, which we recognize in “Total other comprehensive loss,” net of taxes, in our consolidated statements of operations and comprehensive income. Credit losses are evaluated on an individual security basis and are limited to the difference between the fair value of the debt security and its amortized cost basis. If we intend to sell a debt security or it is more likely than not that we will be required to sell the debt security before recovery, any allowance for credit losses on the debt security is reversed and the amortized cost basis of the debt security is written down to its fair value through “Investment gains, net.”

Mortgage Loans

Loans Held for Sale

When we acquire mortgage loans that we intend to sell or securitize via trusts that will not be consolidated, we classify the loans as held for sale (“HFS”). We report the carrying value of HFS loans at the lower of cost or fair value. Any excess of an HFS loan’s cost over its fair value is recognized as a valuation allowance, with changes in the valuation allowance recognized as “Investment gains, net” in our consolidated statements of operations and comprehensive income. We recognize interest income on HFS loans on an accrual basis, unless we determine that the ultimate collection of contractual principal or interest payments in full is not reasonably assured. Purchased premiums, discounts and other cost basis adjustments on HFS loans are deferred upon loan acquisition, included in the cost basis of the loan, and not amortized. We determine any lower of cost or fair value adjustment on HFS loans at an individual loan level.

For nonperforming loans transferred from held for investment (“HFI”) to HFS, based upon a change in our intent, we record the loans at the lower of cost or fair value on the date of transfer. When the fair value of the nonperforming loan is less than its amortized cost, we record a write-off against the allowance for loan losses in an amount equal to the difference between the amortized cost basis and the fair value of the loan. If the amount written off upon transfer exceeds the allowance related to the transferred loan, we record the excess in provision for credit losses. If the amounts written off are less than the allowance related to the loans, we recognize a benefit for credit losses.

Nonperforming loans include both seriously delinquent and reperforming loans, which are loans that were previously delinquent but are performing again because payments on the mortgage loan have become current with or without the use of a loan modification plan. Single-family seriously delinquent loans are loans that are 90 days or more past due or in the foreclosure process. Multifamily seriously delinquent loans are loans that are 60 days or more past due.

In the event that we reclassify a performing loan from HFI to HFS, based upon a change in our intent, the allowance for loan losses previously recorded on the HFI mortgage loan is reversed through “Benefit (provision) for credit losses” at the time of reclassification. The mortgage loan is reclassified into HFS at its amortized cost basis and a valuation allowance is established to the extent that the amortized cost basis of the loan exceeds its fair value. The initial recognition of the valuation allowance and any subsequent changes are recorded as a gain or loss in “Investment gains, net.”

Loans Held for Investment

When we acquire mortgage loans that we have the ability and the intent to hold for the foreseeable future or until maturity, we classify the loans as HFI. When we consolidate a securitization trust, we recognize the loans underlying the trust in our consolidated balance sheets. The trusts do not have the ability to sell mortgage loans and the use of such loans is limited exclusively to the settlement of obligations of the trusts. Therefore, mortgage loans acquired when we have the intent to securitize via consolidated trusts are generally classified as HFI in our consolidated balance sheets both prior to and subsequent to their securitization.

We report the carrying value of HFI loans at the unpaid principal balance, net of unamortized premiums and discounts, other cost basis adjustments, and allowance for loan losses. We define the amortized cost of HFI loans as unpaid principal balance and accrued interest receivable, net, including any unamortized premiums, discounts, and other cost basis adjustments. For purposes of our consolidated balance sheets, we present accrued interest receivable separately from the amortized cost of our loans held for investment. We recognize interest income on HFI loans on an accrual basis using the effective yield method over the contractual life of the loan, including the amortization of any deferred cost basis adjustments, such as the premium or discount at acquisition, unless we determine that the ultimate collection of contractual principal or interest payments in full is not reasonably assured.

Nonaccrual Loans

For loans that were current as of March 1, 2020 and subsequently became delinquent or entered into forbearance during the COVID-19 pandemic, see the changes to our application of our nonaccrual guidance in the section on “New Accounting Guidance” below.

For loans not subject to the COVID-19-related nonaccrual guidance, we discontinue accruing interest on loans when we believe collectability of principal and interest is not reasonably assured, which for a single-family loan we have determined, based on our historical experience, to be when the loan becomes two months or more past due according to its contractual terms. Interest previously accrued but not collected on loans is reversed through interest income at the date a loan is placed on nonaccrual status. For single-family loans on nonaccrual status, we recognize income when cash payments are received. We return a non-modified single-family loan to accrual status at the point that the borrower brings the loan current. We return a modified single-family loan to accrual status at the point that the borrower successfully makes all required payments during the trial period (generally three to four months) and the modification is made permanent. As of January 1, 2020, we place a multifamily loan on nonaccrual status when the loan becomes two months or more past due according to its contractual terms unless the loan is well secured such that collectability of principal and accrued interest is reasonably assured. For multifamily loans on nonaccrual status, we apply any payment received on a cost recovery basis to reduce principal on the mortgage loan. We return a multifamily loan to accrual status when the borrower cures the delinquency of the loan. Activity related to the multifamily nonaccrual policy has been immaterial historically. Single-family and multifamily loans are reported past due if a full payment of principal and interest is not received within one month of its due date.

Restructured Loans

A modification to the contractual terms of a loan that results in granting a concession to a borrower experiencing financial difficulty is considered a troubled debt restructuring (“TDR”). Our loss mitigation programs primarily include modifications that result in the capitalization of past due amounts in combination with interest rate reductions and/or the extension of the loan’s maturity date. Such restructurings are granted to borrowers in financial difficulty on either a permanent or contingent basis, as in the case of modifications with a trial period. We consider these types of loan restructurings to be TDRs.

We generally do not include principal or past due interest forgiveness as part of our loss mitigation programs, and, as a result, we generally do not charge off any outstanding principal or accrued interest amounts at the time of loan modification. We believe that the loan underwriting activities we perform as a part of our loan modification process coupled with the borrower’s successful performance during any required trial period provides us reasonable assurance regarding the collectability of the principal and interest due in accordance with the loan’s modified terms, which include any past due interest amounts that are capitalized as principal at the time of modification. As such, the loan is returned to accrual status when the loan modification is completed (i.e., at the end of the trial period), and we accrue interest thereafter in accordance with our interest accrual policy. If the loan was on nonaccrual status prior to entering the trial period, it remains on nonaccrual status until the borrower demonstrates performance via the trial period and the modification is finalized.

We also engage in other loss mitigation activities with troubled borrowers, which include repayment plans, forbearance arrangements, and modifications that are limited to the capitalization only of past due amounts (i.e., payment deferrals). For all of these activities, we consider the deferral or capitalization of three or fewer missed payments to represent only

an insignificant delay, and thus not a TDR. If we defer or capitalize more than three missed payments either through a legal or informal modification, the delay is no longer considered insignificant, and the restructuring is accounted for as a TDR. Our current TDR accounting described herein is temporarily impacted by our election to account for certain eligible loss mitigation activities under the relief granted pursuant to the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”). See the section below on “New Accounting Guidance” for more information on the impact of the CARES Act.

We measure impairment of a loan restructured in a TDR based on the excess of the amortized cost in the loan over the present value of the expected future cash inflows discounted at the loan’s original effective interest rate. Costs incurred to complete a TDR are expensed as incurred. However, when foreclosure is probable, we measure impairment based on the difference between our amortized cost in the loan and the fair value of the underlying property, adjusted for the estimated costs to sell the property and estimated insurance or other proceeds we expect to receive.

Allowance for Loan Losses

The Current Expected Credit Loss Standard

The Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2016-13, “Financial Instruments—Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments” in June 2016, which was later amended by ASU 2019-04, ASU 2019-05 and ASU 2019-11. These ASUs (the “CECL standard”) replaced the incurred loss impairment methodology for loans that are collectively evaluated for impairment with a methodology that reflects lifetime expected credit losses and requires consideration of a broader range of reasonable and supportable forecast information to develop a lifetime credit loss estimate. The CECL standard also requires credit losses related to AFS debt securities to be recorded through an allowance for credit losses. Our adoption of this standard on January 1, 2020 did not have a material impact on our portfolio of AFS debt securities.

The CECL standard became effective for our fiscal year beginning January 1, 2020. We have changed our accounting policies as described below and implemented system, model and process changes to adopt the standard. Upon adoption, we used a discounted cash flow method to measure expected credit losses on our single-family mortgage loans and an undiscounted loss method to measure expected credit losses on our multifamily mortgage loans. The models used to estimate credit losses incorporated our historical credit loss experience, adjusted for current economic forecasts and the current credit profile of our loan book of business. The models used reasonable and supportable forecasts for key economic drivers, such as home prices (single-family), rental income (multifamily) and capitalization rates (multifamily).

Allowance for Loan Losses

Our allowance for loan losses is a valuation account that is deducted from the amortized cost basis of HFI loans to present the net amount expected to be collected on the loans. The allowance for loan losses reflects an estimate of expected credit losses on single-family and multifamily HFI loans held by Fannie Mae and by consolidated Fannie Mae MBS trusts. Estimates of credit losses are based on expected cash flows derived from internal models that estimate loan performance under simulated ranges of economic environments. Our modeled loan performance is based on our historical experience of loans with similar risk characteristics, adjusted to reflect current conditions and reasonable and supportable forecasts. Our historical loss experience and our credit loss estimates capture the possibility of remote events that could result in credit losses on loans that are considered low risk. The allowance for loan losses does not consider benefits from freestanding credit enhancements, such as our CAS and CIRT programs and multifamily DUS lender risk-sharing arrangements, which are recorded in “Other assets” in our consolidated balance sheets. For loans that were current as of March 1, 2020 and subsequently became delinquent or entered into forbearance during the COVID-19 pandemic, see changes to our allowance for loan losses in the section on “New Accounting Guidance” below. For loans not subject to the COVID-19 related guidance, we have elected not to measure an allowance for credit losses on accrued interest receivable balances as we have a nonaccrual policy to ensure the timely reversal of unpaid accrued interest. See “Note 4, Allowance for Loan Losses” for additional information about our current-period provision for loan losses, including a discussion of the estimates used in measuring the impact of the COVID-19 pandemic on our allowance.

Changes to our estimate of expected credit losses, including changes due to the passage of time, are recorded through the benefit (provision) for credit losses. When calculating our allowance for loan losses, we consider only our amortized cost in the loans at the balance sheet date. We record write-offs as a reduction to the allowance for loan losses when losses are confirmed through the receipt of assets in satisfaction of a loan, such as the underlying collateral upon foreclosure or cash upon completion of a short sale. Additionally, we record write-offs as a reduction to our allowance for loan losses when a loan is determined to be uncollectible, upon the transfer of a nonperforming loan from HFI to HFS and pursuant to the write-off provisions of FHFA’s Advisory Bulletin 2012-02, “Framework for Adversely Classifying Loans, Other Real Estate Owned, and Other Assets and Listing Assets for Special Mention” (the “Advisory Bulletin”).

The excess of a loan’s unpaid principal balance, accrued interest and any applicable cost basis adjustments (“our total exposure”) over the fair value of the assets is treated as a write-off loss that is deducted from the allowance for loan losses. We include expected recoveries of amounts previously written off and expected to be written off in determining our allowance for loan losses.

Single-Family Loans

We estimate the amount expected to be collected on our single-family loans using a discounted cash flow approach. Our allowance for loan losses is calculated as the difference between the amortized cost basis of the loan and the present value of expected cash flows on the loan. Expected cash flows include payments from the borrower, net of servicing fees, contractually attached credit enhancements and proceeds from the sale of the underlying collateral, net of selling costs.

When foreclosure of a single-family loan is probable, the allowance for loan losses is calculated as the difference between the amortized cost basis of the loan and the fair value of the collateral as of the reporting date, adjusted for the estimated costs to sell the property and the amount of expected recoveries from contractually attached credit enhancements or other proceeds we expect to receive.

Expected cash flows are developed using internal models that capture market and loan characteristic inputs. Market inputs include information such as actual and forecasted home prices, interest rates, volatility and spreads, while loan characteristic inputs include information such as mark-to-market loan-to-value (“LTV”) ratios, delinquency status, geography and borrower FICO credit scores. The model assigns a probability to borrower events including contractual payment, loan payoff and default under various economic environments based on historical data, current conditions and reasonable and supportable forecasts.

The two primary drivers of our forecasted economic environments are interest rates and home prices. Our model projects the range of possible interest rate scenarios over the life of the loan based on actual interest rates and observed option pricing volatility in the capital markets. We develop regional forecasts based on Metropolitan Statistical Area data for single-family home prices using a multi-path simulation that captures home price projections over a five-year period, the period for which we can develop reasonable and supportable forecasts. After the five-year period, the home price forecast immediately reverts to a historical long-term growth rate.

Expected cash flows on the loan are discounted at the effective interest rate on the loan, adjusted for expected prepayments. For single-family loans that have not been modified in a TDR, the discount rate is updated each reporting period to reflect changes in expected prepayments. Expected cash flows do not include expected extensions of the contractual term unless such extension is the result of a reasonably expected TDR.

We consider the effects of actual and reasonably expected TDRs in our estimate of credit losses. These effects include any economic concession provided or expected to be provided to a borrower experiencing financial difficulty. We consider our current servicing practices and our historical experience to estimate reasonably expected TDRs. When a loan is contractually modified in a TDR, to capture the concession, the discount rate on the loan is locked to the rate in effect just prior to the modification and is no longer updated for changes in expected prepayments.

Multifamily Loans

Our allowance for loan losses on multifamily loans is calculated based on estimated probabilities of default and loss severities to derive expected loss ratios, which are then applied to the amortized cost basis of the loans. Our probabilities of default and severity are estimated using internal models based on historical loss experience of loans with similar risk characteristics that affect credit performance, such as debt service coverage ratio (“DSCR”), mark-to-market LTV ratio, collateral type, age, loan size, geography, prepayment penalty term and note type. Our models simulate a range of possible future economic scenarios, which are used to estimate probabilities of default and loss severities. Key inputs to our models include rental income, which drives expected DSCRs for our loans, and capitalization rates, which project future property values. Our reasonable and supportable forecasts for multifamily rental income and capitalization rates, which are projected based on Metropolitan Statistical Area data, extend through the contractual maturity of the loans. For TDRs, we use a discounted cash flow approach to estimate expected credit losses.

When foreclosure of a multifamily loan is probable, the allowance for loan losses is calculated as the difference between the amortized cost basis of the loan and the fair value of the collateral as of the reporting date, adjusted for the estimated costs to sell the property.

Allowance for Loan Losses Prior to the Adoption of the CECL Standard

For periods prior to the adoption of the CECL standard, we maintained an allowance for loan losses for loans classified as held for investment, including both loans held in our portfolio and loans held in consolidated Fannie Mae MBS trusts.

This amount was calculated to represent probable losses incurred related to loans in our consolidated balance sheets, including concessions granted to borrowers upon modifications of their loans, as of the balance sheet date. The allowance for loan losses was a valuation allowance that reflected an estimate of incurred credit losses related to our loans held for investment. Our allowance for loan losses consisted of a specific loss reserve for individually impaired loans and a collective loss reserve for all other loans.

We established a specific single-family loss reserve for individually impaired loans, which included loans we restructured as TDRs. The single-family loss reserve for individually impaired loans represented the majority of our single-family loss reserves due to the high volume of restructured loans. We typically measured impairment based on the difference between our amortized cost (previously referred to as recorded investment) in the loan and the present value of the estimated cash flows we expected to receive, which we calculated using the effective interest rate of the original loan or the effective interest rate at acquisition for an acquired credit-impaired loan. However, when foreclosure was probable on an individually impaired loan, we measured impairment based on the difference between our amortized costs in the loan and the fair value of the underlying property, adjusted for the estimated discounted costs to sell the property and estimated insurance or other proceeds we expected to receive. When a loan was restructured or modified, we measured impairment using a cash flow analysis discounted at the loan’s original effective interest rate.

We established a collective single-family loss reserve for all other single-family loans in our single-family guaranty book of business using a model that estimated the probability of default on these loans to derive a loss reserve estimate given multiple factors, such as origination year, mark-to-market LTV ratio, delinquency status and loan product type. The loss severity estimates we used in determining our loss reserves reflected current available information on actual events and conditions as of each balance sheet date, including current home prices. Our loss severity estimates did not incorporate assumptions about future changes in home prices. We did, however, use recent regional historical sales and appraisal information, including the sales of our own foreclosed properties, to develop our loss severity estimates for all loan categories.

We established a collective multifamily loss reserve for all loans in our multifamily guaranty book of business that were not individually impaired using an internal model that applied loss factors to loans in similar risk categories. Our loss factors were developed based on our historical default and loss severity experience. Management could also apply judgment to adjust the loss factors derived from our models, taking into consideration model imprecision and specific known events, such as current credit conditions, that could affect the credit quality of our multifamily loan portfolio but were not yet reflected in our model-generated loss factors.

We established a specific multifamily loss reserve for multifamily loans that we determined were individually impaired. We identified multifamily loans for evaluation for impairment through a credit risk assessment process. As part of this assessment process, we stratified multifamily loans into different internal risk categories based on the credit risk inherent in each individual loan and management judgment. We categorized loan credit risk, taking into consideration available operating statements and expected cash flows from the underlying property, the estimated value of the property, the historical loan payment experience and current relevant market conditions that could impact credit quality. If we concluded that a multifamily loan was impaired, we measured the impairment based on the difference between our amortized cost in the loan and the fair value of the underlying property less the estimated discounted costs to sell the property and any lender loss sharing or other proceeds we expected to receive. When a multifamily loan was deemed individually impaired because we had modified it, we measured the impairment based on the difference between our amortized cost in the loan and the present value of expected cash flows discounted at the loan’s original interest rate unless foreclosure was probable, in which case we measured impairment the same way we measured it for other individually impaired multifamily loans.

Advances to Lenders

Advances to lenders represent our payments of cash in exchange for the receipt of mortgage loans from lenders in a transfer that is accounted for as a secured lending arrangement. These transfers primarily occur when we provide early funding to lenders for loans that they will subsequently either sell to us or securitize into a Fannie Mae MBS that they will deliver to us. We individually negotiate early lender funding advances with our lender customers. Early lender funding advances have terms up to 60 days and earn a short-term market rate of interest.

We report cash outflows from advances to lenders as an investing activity in our consolidated statements of cash flows. Settlements of the advances to lenders, other than through lender repurchases of loans, are not collected in cash, but rather in the receipt of either loans or Fannie Mae MBS. Accordingly, this activity is reflected as a non-cash transfer in our consolidated statements of cash flows in the line item entitled “Transfers from advances to lenders to loans held for investment of consolidated trusts.”

Acquired Property, Net

We recognize foreclosed property (i.e., “Acquired property, net”) upon the earlier of the loan foreclosure event or when we take physical possession of the property (i.e., through a deed-in-lieu of foreclosure transaction). We initially measure foreclosed property at its fair value less its estimated costs to sell. We treat any excess of our amortized cost in the loan over the fair value less estimated costs to sell the property as a write-off to the “Allowance for loan losses” in our consolidated balance sheets. Any excess of the fair value less estimated costs to sell the property over our amortized cost in the loan is recognized first to recover any previously written-off amounts, then to recover any forgone, contractually due interest, and lastly to “Foreclosed property expense” in our consolidated statements of operations and comprehensive income.

We classify foreclosed properties as HFS when we intend to sell the property and the following conditions are met at either acquisition or within a relatively short period thereafter: we are actively marketing the property and it is available for immediate sale in its current condition such that the sale is reasonably expected to take place within one year. We report these properties at the lower of their carrying amount or fair value less estimated selling costs. We do not depreciate these properties.

We recognize a loss for any subsequent write-down of the property to its fair value less its estimated costs to sell through a valuation allowance with an offsetting charge to “Foreclosed property expense” in our consolidated statements of operations and comprehensive income. We recognize a recovery for any subsequent increase in fair value less estimated costs to sell up to the cumulative loss previously recognized through the valuation allowance. We recognize gains or losses on sales of foreclosed property through “Foreclosed property expense” in our consolidated statements of operations and comprehensive income.

Properties that do not meet the criteria to be classified as HFS are classified as held for use and are recorded in “Other assets” in our consolidated balance sheets. These properties are depreciated and are evaluated for impairment when circumstances indicate that the carrying amount of the property is no longer recoverable.

Commitments to Purchase and Sell Mortgage Loans and Securities

We enter into commitments to purchase and sell mortgage-backed securities and to purchase single-family and multifamily mortgage loans. Certain commitments to purchase or sell mortgage-backed securities and to purchase single-family mortgage loans are accounted for as derivatives. Our commitments to purchase multifamily loans are not accounted for as derivatives because they do not meet the criteria for net settlement.

When derivative purchase commitments settle, we include the fair value on the settlement date in the cost basis of the loan or unconsolidated security we purchase. When derivative commitments to sell securities settle, we include the fair value of the commitment on the settlement date in the cost basis of the security we sell. Purchases and sales of securities issued by our consolidated MBS trusts are treated as extinguishments or issuances of debt, respectively. For commitments to purchase and sell securities issued by our consolidated MBS trusts, we recognize the fair value of the commitment on the settlement date as a component of debt extinguishment gains and losses or in the cost basis of the debt issued, respectively.

Regular-way securities trades provide for delivery of securities within the time generally established by regulations or conventions in the market in which the trade occurs and are exempt from application of derivative accounting. Commitments to purchase or sell securities that we account for on a trade-date basis are also exempt from the derivative accounting requirements. We record the purchase and sale of an existing security on its trade date when the commitment to purchase or sell the existing security settles within the period of time that is customary in the market in which those trades take place.

Additionally, contracts for the forward purchase or sale of when-issued and to-be-announced (“TBA”) securities are exempt from the derivative accounting requirements if there is no other way to purchase or sell that security, delivery of that security and settlement will occur within the shortest period possible for that type of security and it is probable at inception and throughout the term of the individual contract that physical delivery of the security will occur. Since our commitments for the purchase of when-issued and TBA securities can be net settled and we do not document that physical settlement is probable, we account for all such commitments as derivatives.

Derivative Instruments

We recognize all derivatives as either assets or liabilities in our consolidated balance sheets at their fair value on a trade date basis.

We offset the carrying amounts of certain derivatives that are in gain positions and loss positions as well as cash collateral receivables and payables associated with derivative positions pursuant to the terms of enforceable master netting arrangements. We offset these amounts only when we have the legal right to offset under the contract and we

have met all of the offsetting conditions. For our over-the-counter (“OTC”) derivative positions, our master netting arrangements allow us to net derivative assets and liabilities with the same counterparty. For our cleared derivative contracts, our master netting arrangements allow us to net our exposure by clearing organization and by clearing member.

After offsetting, we report derivatives in a gain position in “Other assets” and derivatives in a loss position in “Other liabilities” in our consolidated balance sheets.

We evaluate financial instruments that we purchase or issue and other financial and non-financial contracts for embedded derivatives. To identify embedded derivatives that we must account for separately, we determine if: (1) the economic characteristics of the embedded derivative are not clearly and closely related to the economic characteristics of the financial instrument or other contract (i.e., the host contract); (2) the financial instrument or other contract itself is not already measured at fair value with changes in fair value included in earnings; and (3) a separate instrument with the same terms as the embedded derivative would meet the definition of a derivative. If the embedded derivative meets all three of these conditions, we elect to carry the hybrid contract in its entirety at fair value with changes in fair value recorded in earnings.

Collateral

We enter into various transactions where we pledge and accept collateral, the most common of which are our derivative transactions. Required collateral levels vary depending on the credit rating and type of counterparty. We also pledge and receive collateral under our repurchase and reverse repurchase agreements. In order to reduce potential exposure to repurchase counterparties, a third-party custodian typically maintains the collateral and any margin. We monitor the fair value of the collateral received from our counterparties, and we may require additional collateral from those counterparties, as we deem appropriate.

Cash Collateral

We record cash collateral accepted from a counterparty that we have the right to use as “Cash and cash equivalents” and cash collateral accepted from a counterparty that we do not have the right to use as “Restricted cash” in our consolidated balance sheets. We net our obligation to return cash collateral pledged to us against the fair value of derivatives in a gain position recorded in “Other assets” in our consolidated balance sheets as part of our counterparty netting calculation.

For derivative positions with the same counterparty under master netting arrangements where we pledge cash collateral, we remove it from “Cash and cash equivalents” and net the right to receive it against the fair value of derivatives in a loss position recorded in “Other liabilities” in our consolidated balance sheets as a part of our counterparty netting calculation.

Non-Cash Collateral

We classify securities pledged to counterparties as either “Investments in securities” or “Cash and cash equivalents” in our consolidated balance sheets. Securities pledged to counterparties that have been consolidated with the underlying assets recognized as loans are included as “Mortgage loans” in our consolidated balance sheets.

Our liability to third party holders of Fannie Mae MBS that arises as the result of a consolidation of a securitization trust is collateralized by the underlying loans and/or mortgage-related securities.

Debt

Our consolidated balance sheets contain debt of Fannie Mae as well as debt of consolidated trusts. We report debt issued by us as “Debt of Fannie Mae” and by consolidated trusts as “Debt of consolidated trusts.” Debt issued by us represents debt that we issue to third parties to fund our general business activities and certain credit risk-sharing securities. The debt of consolidated trusts represents the amount of Fannie Mae MBS issued from such trusts that is held by third-party certificateholders and prepayable without penalty at any time. We report deferred items, including premiums, discounts and other cost basis adjustments, as adjustments to the related debt balances in our consolidated balance sheets.

We classify interest expense as either short-term or long-term based on the contractual maturity of the related debt. We recognize the amortization of premiums, discounts and other cost basis adjustments through interest expense using the effective interest method usually over the contractual term of the debt. Amortization of premiums, discounts and other cost basis adjustments begins at the time of debt issuance.

When we purchase a Fannie Mae MBS issued from a consolidated single-class securitization trust, we extinguish the related debt of the consolidated trust as the MBS debt is no longer owed to a third-party. We record debt extinguishment

gains or losses related to debt of consolidated trusts to the extent that the purchase price of the MBS does not equal the carrying value of the related consolidated MBS debt reported in our consolidated balance sheet (including unamortized premiums, discounts and other cost basis adjustments) at the time of purchase as a component of “Other expenses, net” in our consolidated statements of operations and comprehensive income.

Income Taxes

We recognize deferred tax assets and liabilities based on the differences in the book and tax bases of assets and liabilities. We measure deferred tax assets and liabilities using enacted tax rates that are applicable to the period(s) that the differences are expected to reverse. We adjust deferred tax assets and liabilities for the effects of changes in tax laws and rates in the period of enactment. We recognize investment and other tax credits through our effective tax rate calculation assuming that we will be able to realize the full benefit of the credits. We invest in LIHTC projects and elect the proportional amortization method for the associated tax credits. We amortize the cost of a LIHTC investment each reporting period in proportion to the tax credits and other tax benefits received. We recognize the resulting amortization as a component of the “provision for federal income taxes” in our consolidated statements of operations and comprehensive income.

We reduce our deferred tax assets by an allowance if, based on the weight of available positive and negative evidence, it is more likely than not (a probability of greater than 50%) that we will not realize some portion, or all, of the deferred tax asset.

We account for uncertain tax positions using a two-step approach whereby we recognize an income tax benefit if, based on the technical merits of a tax position, it is more likely than not that the tax position would be sustained upon examination by the taxing authority, which includes all related appeals and litigation. We then measure the recognized tax benefit based on the largest amount of tax benefit that is greater than 50% likely to be realized upon settlement with the taxing authority, considering all information available at the reporting date. We recognize interest expense and penalties on unrecognized tax benefits as “Other expenses, net” in our consolidated statements of operations and comprehensive income.

Earnings (Loss) per Share

Earnings (loss) per share (“EPS”) is presented for basic and diluted EPS. We compute basic EPS by dividing net income (loss) attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period. However, as a result of our conservatorship status and the terms of the senior preferred stock, no amounts would be available to distribute as dividends to common or preferred stockholders (other than to Treasury as the holder of the senior preferred stock). Net income (loss) attributable to common stockholders excludes amounts attributable to the senior preferred stock, which increase the liquidation preference as described above in “Senior Preferred Stock Purchase Agreement, Senior Preferred Stock and Warrant.” Weighted average common shares includes 4.7 billion shares for the year ended December 31, 2020, and 4.6 billion shares for the years ended December 31, 2019 and 2018, that would be issued upon the full exercise of the warrant issued to Treasury from the date the warrant was issued through December 31, 2020, 2019 and 2018, respectively.

The calculation of diluted EPS includes all the components of basic earnings per share, plus the dilutive effect of common stock equivalents such as convertible securities and stock options. Weighted-average shares outstanding is increased to include the number of additional common shares that would have been outstanding if the dilutive potential common shares had been issued. Our diluted EPS weighted-average shares outstanding includes 26 million shares of convertible preferred stock for the year ended December 31, 2020 and 131 million shares of convertible preferred stock for the years ended December 31, 2019 and 2018, respectively. During periods in which a net loss attributable to common stockholders has been incurred, potential common equivalent shares outstanding are not included in the calculation because it would have an anti-dilutive effect.

New Accounting Guidance

The CARES Act and Interagency Regulatory Guidance

The Coronavirus Aid, Relief, and Economic Security Act, referred to as the CARES Act, which was enacted in March 2020, provides temporary relief from the accounting and reporting requirements for TDRs regarding certain loan modifications related to COVID-19. In December of 2020, the temporary relief provided by the CARES Act was extended pursuant to the Consolidated Appropriations Act of 2021. The CARES Act as extended provides that a financial institution may elect to suspend the TDR requirements under GAAP for loan modifications related to the COVID-19 pandemic that occur between March 1, 2020 through the earlier of January 1, 2022 or 60 days after the date on which the COVID-19 national emergency terminates (the “Applicable Period”), as long as the loan was not more than 30 days delinquent as of December 31, 2019. Loan modifications as defined by the CARES Act include forbearance

arrangements, repayment plans, interest rate modifications and any similar arrangements that defer or delay the payment of principal or interest.

We have elected to account for eligible loan modifications under Section 4013 of the CARES Act. Therefore, the initial relief (i.e., the forbearance arrangement) and the subsequent agreements (i.e., repayment plans, payment deferrals and loan modifications) that are necessary to allow the borrower to repay the past due amounts (collectively, the “COVID-19 Relief”), will not be subject to the specialized accounting or disclosures that are required for TDRs if the initial relief related to COVID-19 is granted during the Applicable Period and the borrower was no more than 30 days past due as of December 31, 2019.

In addition to the CARES Act, the Board of Governors of the Federal Reserve System, the Federal Deposit Insurance Corporation, National Credit Union Administration, Office of the Comptroller of the Currency, Consumer Financial Protection Bureau and the State Banking Regulators (collectively, the “Banking Agencies”) issued an “Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customers Affected by the Coronavirus” (the “Interagency Statement”) in April 2020. The Interagency Statement primarily provides incremental guidance related to the nonaccrual of interest income. It indicates that financial institutions may continue to accrue interest income on loans that are granted short-term payment delays, such as forbearance, if the delay is in response to COVID-19 and the loan was less than 30 days past due at the time the delay was granted.

Pursuant to the Interagency Statement, we continue to recognize interest income at the current contractual yield for up to six months of delinquency on loans that were current at March 1, 2020 and have been negatively impacted by COVID-19. For loans that are in a forbearance arrangement beyond six months of delinquency, we continue to accrue interest income provided collection of principal and interest continues to be reasonably assured.

Our evaluation of whether the collection of principal and interest is reasonably assured considers the probability of default, the current value of the collateral and any proceeds that are expected from contractually attached mortgage insurance. Once the forbearance period has ended, we will also consider the extent to which the borrower and the servicer have agreed to any of the loss mitigation options that are available. Multifamily loans that are in a forbearance arrangement are placed on nonaccrual status when the borrower is six months past due unless the loan is both well secured and in the process of collection.

Loans that have been placed on nonaccrual status are returned to accrual status when the loan is brought current through borrower reperformance. A single-family loan may also be returned to accrual status when the loan is brought current through a modification of the loan or a payment deferral. Multifamily loans that have been placed in a repayment plan or that have been brought current through a modification are returned to accrual status once the borrower has made six consecutive contractual payments under the terms of the repayment plan or the modified loan.

For loans in a forbearance arrangement that are placed on nonaccrual status, cash payments for interest are applied as a reduction of accrued interest receivable until the receivable has been reduced to zero, and then recognized as interest income.

If a loan is modified, any capitalized interest that has not been previously recognized as interest income is recorded as a discount to the loan and amortized over the life of the loan.

For loans that have been negatively impacted by COVID-19, we establish a valuation allowance for expected credit losses on the accrued interest receivable balance applying the process that we have established for both single-family and multifamily loans. The credit expense related to this valuation allowance is classified as a component of the provision for credit losses. Accrued interest receivable is written off when the amount is deemed to be uncollectible, in accordance with our write-off policy for mortgage loans. Loans that are in active forbearance plans are not evaluated for write-off.

As a result of this update to our application of our nonaccrual policy for loans negatively impacted by COVID-19, we recognized $2.8 billion in interest income in 2020. We also recognized $216 million of provision for loan losses on the related accrued interest receivable in 2020.

Adoption of the CECL Standard

As described above, the CECL standard became effective for our fiscal year beginning January 1, 2020. The adoption of the standard on January 1, 2020 reduced our retained earnings by $1.1 billion on an after-tax basis. The adoption of this guidance increased our overall credit loss reserves primarily as the result of an increase in our single-family loan loss reserves that were previously evaluated on a collective basis for impairment. This increase was partially offset by a decrease in estimated credit losses on loans that were previously considered individually impaired (our TDRs).

The increase in our single-family and multifamily loan loss reserves that were previously evaluated on a collective basis was primarily driven by the migration from an incurred-loss approach, which allowed us to consider only default events and economic conditions that already existed as of each financial reporting date, to an estimate that incorporates both

expected default events over the expected life of each mortgage loan and a forecast of key inputs, such as home price (single-family) or rental income (multifamily), in different economic environments over a reasonable and supportable period. The increase in loss reserves for the single-family portion of our book was low relative to its size due to the credit quality of these loans and because, as of the date of adoption, our current model forecasted home price growth.

The allowance for loan losses on the TDR book was already measured using an expected lifetime credit loss estimate. The credit losses on this portion of our single-family book decreased upon the adoption of the CECL standard because the new guidance required us to exclude from our estimate of credit losses all pre-foreclosure and post-foreclosure costs that are expected to be advanced after the balance sheet date. Prior to the adoption of the CECL standard, we incorporated these costs in our estimate of credit losses for this book.

Impacts on Key Balance Sheet Line Items upon Implementation of the CECL Standard

The following table discloses the impact of adopting the CECL standard on key balance sheet line items.


	Balance as of December 31, 2019		Transition Impact of Adoption of the CECL Standard		Balance as of January 1, 2020
	(Dollars in millions)
Mortgage loans held for sale	$	6,773	$	50	$	6,823
Allowance for loan losses	(9,016)		(1,722)		(10,738)
Other assets(1)	14,312		230		14,542
Deferred tax assets, net	11,910		303		12,213
Accumulated deficit (beginning retained earnings)	(118,776)		(1,139)		(119,915)

(1)Transition adjustment primarily represents the reclassification and recognition of freestanding credit enhancements not contractually attached to the loan.

For a discussion of the current-period measurement of our allowance for loan losses under the CECL standard, including the expected impact of the COVID-19 pandemic, see “Note 4, Allowance for Loan Losses.”

Reference Rate Reform

In March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting” (“ASU 2020-04”), which provides optional temporary relief to ease the potential burden of transitioning away from LIBOR and other discontinued interest rates. Specifically, ASU 2020-04 provides optional practical expedients and exceptions under GAAP related to contract modifications and hedging relationships that reference LIBOR or another reference rate expected to be discontinued. Qualifying for the accounting relief provided by ASU 2020-04 is subject to meeting certain criteria and is generally only available to contract modifications made and hedging relationships entered into or evaluated prospectively from March 12, 2020 through December 31, 2022.

In May 2020, we modified trust agreements governing our Fannie Mae REMIC and other multi-class transactions issued prior to July 2013 that are backed by floating rate or reverse floating rate securities to include fallback provisions in order to ease the potential burden of transitioning away from LIBOR. The update to the fallback language in the Omnibus Trust Supplement qualified for the accounting relief provided by ASU 2020-04, and we accounted for the update as a modification to the existing agreements. The impact of the May 2020 agreement modifications governing Fannie Mae REMIC and multi-class transactions issued prior to July 2013 was not material to Fannie Mae. We had no hedge accounting relationships between March 12, 2020 and December 31, 2020. We will continue to evaluate ASU 2020-04 to determine the timing and extent to which we will apply the provided accounting relief.

On January 7, 2021, the FASB issued ASU 2021-01, an update to ASU 2020-04, which clarifies the scope of the optional relief for reference rate reform provided by ASC Topic 848. The ASU permits entities to apply certain of the optional practical expedients and exceptions in ASC 848 to the accounting for derivative contracts and hedging activities that may be affected by changes in interest rates used for discounting cash flows, computing variation margin settlements and calculating price alignment interest (the “discounting transition”). These optional practical expedients and exceptions may be applied to derivative instruments impacted by the discounting transition even if such instruments do not reference a rate that is expected to be discontinued. The ASU is effective immediately and an entity may elect to apply the amendments as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020 or on a prospective basis to new modifications from any date within an interim period that includes or is subsequent to January 7, 2021, up to the date that financial statements are available to be issued. The adoption of this ASU is not expected to have a material impact on our financial statements.

Item Effected [Line Items]

Mortgage loans held for sale

50,000,000

Other assets

230,000,000

Accumulated deficit

$ (1,139,000,000)