Deposit Insurance Fund

The Deposit Insurance Fund (DIF) is the fund administered by the Federal Deposit Insurance Corporation (FDIC) to insure deposits at covered U.S. banks and resolve failed insured depository institutions. It is financed primarily by assessments on insured institutions and interest earned on investments in U.S. government obligations. Its balance and reserve ratio are monitored as part of the federal deposit-insurance system and the FDIC’s management of bank failures. ^[1]

Purpose and administration

The DIF has two primary purposes: to protect depositors by insuring deposits at insured banks and to provide resources for resolving failed banks. The FDIC manages the fund and uses it in carrying out its responsibilities as deposit insurer and, when applicable, as receiver for failed institutions. The fund is distinct from a bank’s own assets and from an individual depositor’s account: it is a pooled insurance fund administered at the federal level. ^[1]

The FDIC is an independent federal agency. Its statutory responsibilities include administering deposit insurance, and the agency manages the DIF under the Federal Deposit Insurance Act and related laws. Congress has assigned the FDIC authority over assessment rates, fund management and the resolution of insured depository institutions, subject to statutory requirements. ^[2]

The DIF in its current form dates from the merger of the Bank Insurance Fund and the Savings Association Insurance Fund. The FDIC completed that merger effective March 31, 2006, under the Federal Deposit Insurance Reform Act of 2005. The merger consolidated the insurance funds that had separately supported coverage for banks and savings associations. ^[3]

Sources of revenue and expenses

The fund is supported mainly by quarterly assessments paid by FDIC-insured institutions. It also earns interest on investments in U.S. government obligations. Assessment revenue and investment income increase the fund’s balance, while insured losses from bank failures, operating expenses and other costs reduce it. The DIF is backed by the full faith and credit of the United States government. ^[1]

An institution’s assessment is generally calculated by multiplying its assessment rate by its assessment base. Since regulations adopted in 2011, the assessment base is generally the institution’s average consolidated total assets minus average tangible equity. It is therefore broader than insured deposits alone. The FDIC explains that, in this framework, assessments are based on institutions’ liabilities rather than solely on the deposits that receive insurance coverage. ^[4]

Assessment rates are risk-based, with the applicable method differing by institution size and complexity. The FDIC generally calculates rates for smaller banks using a formula that incorporates financial data and supervisory ratings. Large institutions are assessed through scorecards; a separate scorecard applies to certain highly complex institutions. The measures include supervisory ratings, indicators of financial strength and an estimate of the potential severity of losses to the FDIC if an institution fails. Adjustments can also apply based on specified characteristics, including certain unsecured debt and brokered-deposit measures. ^[4]

Assessments are paid by insured institutions, not charged directly to individual depositors as a separate insurance premium. The FDIC describes the assessment as a cost borne by insured institutions and set according to the applicable assessment rules. The insurance fund’s revenues are pooled, rather than earmarked to reimburse customers of a particular bank. ^[1][4]

Reserve ratio and fund management

The DIF’s reserve ratio is the fund balance divided by the estimated value of aggregate insured deposits. It is one measure used to compare the resources held by the fund with the deposits it insures. The FDIC publishes the fund balance and reserve ratio in its Quarterly Banking Profile. Because the ratio depends both on the fund balance and the amount of insured deposits, it can change when either rises or falls. ^[5]

The FDIC Board designates a reserve ratio each year. The Federal Deposit Insurance Act requires the Board to consider factors including the risk of losses to the fund, economic conditions affecting insured institutions and the goal of avoiding sharp swings in assessment rates. The designated reserve ratio (DRR) may not be below the statutory minimum of 1.35 percent; the statute does not set an upper limit. The FDIC has maintained a DRR of 2 percent since 2011, describing it as a long-range goal intended to help the fund remain positive through periods of significant losses. ^[5]

The DRR is a planning target, not a guarantee that the fund will always hold assets equal to 2 percent of insured deposits. Nor should it be confused with the reserve ratio reported for a specific quarter: that actual ratio reflects the fund’s measured balance and estimated insured deposits at that time. The FDIC’s management approach also seeks to reduce pro-cyclicality—that is, the risk of requiring sharp increases in assessments during economic or credit stress. ^[5]

For 2026, an FDIC staff memorandum recommended maintaining the designated reserve ratio at 2 percent. The memorandum described the Board’s annual designation responsibility and the relevant statutory factors. The FDIC’s fourth-quarter 2025 financial report reported a DIF balance of $153.9 billion and a reserve ratio of 1.42 percent as of December 31, 2025. These figures refer to different measures: the balance is a dollar amount, while the reserve ratio compares the fund with estimated insured deposits. ^[6][7]

Role in bank failures

When an insured institution fails, the FDIC may arrange a transaction with another institution or use another authorized resolution method. The FDIC is generally required to choose the resolution method that is least costly to the DIF, subject to statutory exceptions. Costs to the fund can arise from insured-deposit payments, the value of assets and liabilities transferred, and the FDIC’s work as receiver. ^[8]

The least-cost requirement concerns the FDIC’s choice among available resolution methods; it does not mean that the fund must pay every claim associated with a failed financial company. Shareholders and creditors are generally treated under the applicable resolution and insolvency rules, while deposit-insurance payments are governed by the coverage rules. In a statutory systemic-risk exception, the least-cost requirement may be set aside following the required determinations that applying it would have serious adverse effects on economic conditions or financial stability. The exception does not change the DIF’s general funding structure. ^[8][9]

If losses or rapid growth in insured deposits reduce the reserve ratio below the statutory minimum, the FDIC may be required to adopt a restoration plan. The FDIC operated under such a plan after the ratio fell below 1.35 percent in 2020. In its 2025 fourth-quarter report, the agency stated that it was no longer operating under a restoration plan beginning in the second quarter of 2025. The restoration process concerns rebuilding the fund’s reserve ratio; it does not itself determine the coverage applicable to a particular account. ^[7][10]

Relationship to deposit coverage

The DIF funds the insurance program, but it does not mean that every financial product sold by a bank is insured. Coverage applies to eligible deposits at FDIC-insured institutions, subject to statutory limits and rules for account ownership categories. The standard maximum deposit-insurance amount is $250,000 per depositor, per insured bank, for each ownership category. The legal rules aggregate deposits held by the same depositor in the same capacity and right at the same insured institution when determining coverage. ^[11]

Deposit insurance is therefore different from a guarantee of a bank’s overall financial condition or the market value of investments. It protects covered deposit claims according to applicable law if an insured institution fails; it is not insurance against ordinary changes in the value of securities or other investments. The fund’s overall financial position and a depositor’s coverage determination are related parts of the federal system, but they are not the same calculation. ^[1][11]

Distinction from other federal funds

The DIF is specifically associated with the FDIC’s insurance of deposits at insured banks and its resolution of failed institutions. It is not the same as funds maintained by other agencies for different purposes, such as credit-union share insurance administered by the National Credit Union Administration. The applicable insurer depends on the type of institution and the legal status of the account. ^[1][2]