What Is a Lender of Last Resort: Rules, Borrowers, and Crisis Use

A lender of last resort is the institution that stands behind the financial system when private lenders stop lending, supplying emergency cash to solvent firms so a temporary liquidity squeeze does not turn into a system-wide collapse. In the United States, that role belongs to the Federal Reserve, which draws its authority from the Federal Reserve Act at 12 U.S.C. § 343 and lends only under specific conditions: to solvent borrowers, against good collateral, and at a rate set above normal market rates.¹ Those three conditions, together with a disclosure regime Congress tightened after 2008, define how the function actually operates.

Who Plays the Role

Within the U.S. financial system, the Federal Reserve is the only institution with this authority. Its everyday tool is the discount window, a standing facility that lends short-term to banks. Its emergency tool is Section 13(3) of the Federal Reserve Act, which allows any Federal Reserve Bank to extend credit when the Board of Governors determines that “unusual and exigent circumstances” exist and at least five Board members vote to authorize the program.¹

An analogous function exists for countries. When a government cannot pay for essential imports or service its external debt, the International Monetary Fund provides financial support in exchange for policy adjustments.² The scale is different and the borrower is a state, not a bank, but the underlying logic is the same one that governs Fed lending: keep a solvent-but-illiquid entity funded through the crunch.

The Rules Every Loan Follows

The framework traces back to Walter Bagehot’s 19th-century dictum: lend freely, at a penalty rate, against good collateral, to solvent firms. The point is to supply liquidity to the system, not to rescue a failing company, and to secure every loan well enough to protect taxpayers.³ Lending only to solvent firms against good collateral also limits the moral hazard that government intervention creates.⁴

These principles are now written into law and regulation.

Solvency

Under 12 U.S.C. § 343, the Fed must maintain procedures that prohibit insolvent borrowers from using emergency programs. Borrowers may be required to have their chief executive certify at the time of borrowing that the institution is not in bankruptcy, receivership, or any other insolvency proceeding, and to update that certification if conditions change.¹ For non-bank borrowers under Regulation A, the standard is more concrete: a borrower is disqualified if it has failed to pay undisputed debts as they came due during the 90 days before borrowing.⁵

Collateral

Every advance from a Federal Reserve Bank must be secured to the Bank’s satisfaction. Regulation A treats several categories as generally acceptable: U.S. government and federal-agency securities, mortgage notes on one-to-four-family residences of acceptable quality, state and local government securities, and business and consumer loans.⁶ Investment-grade corporate bonds in U.S. dollars, asset-backed securities, municipal bonds, and certain foreign-government-guaranteed debt also qualify.⁷ Pledged assets are not credited at full market value. The Fed applies haircuts that reflect price volatility, so a shorter-dated Treasury supports more borrowing per dollar than a long-dated lower-rated municipal bond.⁸

Penalty Rate

Emergency lending rates sit above normal market rates by design. If the Fed lent at or below market rates, institutions would have an incentive to take on excessive risk knowing that cheap emergency credit would cushion the consequences. The premium makes borrowing expensive enough that firms exhaust private-market options first.³ Regulation A codifies the same idea for 13(3) programs, requiring interest rates set at a “penalty level” that discourages continued use as conditions improve and encourages repayment.⁵

Who Can Borrow

Access depends on what kind of institution you are. Depository institutions, as defined at 12 U.S.C. § 461(b), have the most direct route in. That definition covers insured commercial banks, mutual savings banks, savings associations, and insured credit unions. Any such institution holding transaction accounts or nonpersonal time deposits has the same borrowing privileges as Federal Reserve member banks and can use the discount window as a routine matter, with no emergency declaration required.⁹

Everyone else is on the outside. Non-bank firms have no standing right to borrow from the Fed and can only receive credit during a declared emergency, through a program that meets a strict “broad-based eligibility” test under Regulation A. The Board of Governors must authorize the program by at least a five-member vote, the Secretary of the Treasury must approve it, the program must serve an identifiable market or sector, and at least five entities must be eligible to participate. A borrower must also demonstrate it cannot obtain credit from other banking institutions.⁵¹ Even inside an active program, no borrower is entitled to credit; the lending Reserve Bank keeps discretion over each request.

How the Discount Window Works Day to Day

The discount window runs three programs, each fitted to a different borrower situation.

Primary credit is for depository institutions in generally sound financial condition. It is the main safety valve for the banking system, typically overnight, and priced off the Federal Open Market Committee’s target range for the federal funds rate. As of late April 2026, the primary credit rate stood at 3.75%.¹⁰¹¹
Secondary credit is for institutions that do not qualify for primary credit. It is priced 50 basis points above the primary rate, usually overnight, and comes with more intensive oversight.¹⁰
Seasonal credit serves smaller depository institutions with deposits under $500 million that see predictable swings in lending and deposits, such as banks in agricultural or resort communities.¹²

Rates for all three programs are set by each Reserve Bank’s board of directors and then reviewed and approved by the Board of Governors in Washington.¹³ Interest accrues in 24-hour increments on a 365-day-year basis.¹⁴

A bank does not walk in cold. Before borrowing, it completes the Operating Circular No. 10 paperwork, which includes a letter of agreement, authorizing resolutions letting the institution borrow and pledge assets, and a list of individuals authorized to initiate transactions.¹⁵ With those in place, the institution submits a loan request for a specific amount and duration. The Reserve Bank confirms the pledged collateral’s value and eligibility, then transfers the funds electronically to the borrower’s reserve account. If the borrower fails to repay, the Reserve Bank can liquidate the collateral under its security interest.¹⁶

How It Works in a Crisis

Section 13(3) is the emergency track, and the rules for using it changed significantly after 2008. During that crisis, the Fed lent directly to individual firms, including a bridge loan to Bear Stearns through JPMorgan Chase and roughly $28.9 billion in non-recourse credit to facilitate the acquisition of Bear Stearns assets, plus large loans to AIG.¹⁷ Those actions were legal under the pre-2010 statute but drew intense political backlash.

The Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 rewrote the provision. Emergency programs must now meet the broad-based eligibility standard, so they cannot be designed to remove assets from a single company’s balance sheet or to help one specific company avoid bankruptcy.¹⁸ The Board also cannot establish any 13(3) program without prior approval from the Secretary of the Treasury.¹ One-off rescues of the 2008 kind are no longer permitted.

The 2020 response reflected the new rules. Rather than lending to individual companies, the Fed established 13 broad-based facilities targeting identifiable sectors: commercial paper markets, money market funds, municipal borrowers, small and medium businesses through the Main Street programs, and corporate credit through primary and secondary market facilities. Each required Treasury approval and was open to a category of borrowers, not a firm.¹⁹

What Becomes Public

Dodd-Frank also added disclosure obligations. Within seven days of establishing any 13(3) program, the Board must report transaction-level information to Congress on all lending under that program. Within one year after a facility terminates, the Board must publicly release detailed transaction data, including borrower names, amounts borrowed, rates charged, and the type and amount of collateral pledged.²⁰

Routine discount window borrowing follows a slower clock. Loan data is published quarterly with roughly a two-year lag.¹³ The delay is intentional. If borrower names appeared immediately, banks would avoid the window entirely for fear that markets would read any use as a distress signal. That fear is not hypothetical.

Why Banks Sometimes Avoid the Facility Meant to Save Them

A lender of last resort only works if institutions actually use it when they should. In practice, many banks refuse to borrow from the discount window even when it would be the rational choice, because they worry that regulators or markets will read the borrowing as evidence of weakness. Researchers at the Federal Reserve Bank of New York found the stigma is measurable: banks regularly purchase federal funds at rates above the primary credit rate rather than borrow at the window, even when they have collateral already on deposit.²¹

The consequences show up in the data. Between 2014 and 2024, banks exhibiting signs of stigma-driven avoidance were three times more likely to fail, and a bank that overpaid for federal funds rather than using the window was roughly 40 percent more likely to do so again the following month.²¹

Policymakers have noticed. Federal Reserve Governor Michelle Bowman has called for “fundamental reform” of the discount window, including streamlined processes across the 12 Reserve Banks. Treasury Secretary Scott Bessent has called for a “wholesale revisiting of the framework” to change the perception that the window is exclusively a last-resort tool. One proposal under discussion would give banks credit in their regulatory liquidity calculations for collateral already positioned at the window, reducing the regulatory penalty for treating it as a routine backup.

1
Office of the Law Revision Counsel. 12 U.S.C. 343 – Discount of Obligations Arising Out of Actual Commercial Transactions
2
International Monetary Fund. IMF Lending
3
Federal Reserve Board. The Lender of Last Resort Function in the United States
4
Federal Reserve Board. Bagehot’s Dictum in Practice – Formulating and Implementing Policies to Combat the Financial Crisis
5
eCFR. 12 CFR 201.4 – Availability and Terms of Credit
6
eCFR. 12 CFR Part 201 – Extensions of Credit by Federal Reserve Banks (Regulation A)
7
Federal Reserve Discount Window. Collateral Eligibility – Securities and Loans
8
Federal Reserve Discount Window. Collateral Valuation
9
Office of the Law Revision Counsel. 12 U.S.C. 461 – Reserve Requirements
10
Federal Reserve Discount Window. Primary and Secondary Credit Programs
11
Federal Reserve. H.15 – Selected Interest Rates (Daily)
12
Federal Reserve Discount Window. Seasonal Credit Program
13
Federal Reserve. Discount Window Lending
14
Federal Reserve Discount Window. The Discount Window
15
The Federal Reserve Discount Window. OC-10 Agreements
16
The Federal Reserve Discount Window. Pledging Collateral
17
Federal Reserve Board. Loan to Facilitate the Acquisition of The Bear Stearns Companies, Inc. by JPMorgan Chase and Co.
18
Federal Reserve Board. Section 13 – Powers of Federal Reserve Banks
19
Federal Reserve Board. 2020 Reports to Congress Pursuant to Section 13(3) of the Federal Reserve Act
20
Federal Reserve. Is the Fed’s Emergency Lending Audited by the Congress?
21
Liberty Street Economics. Discount Window Stigma After the Global Financial Crisis