Deposit insurance is a financial safety-net mechanism in which a public agency, or an agency backed by the state, promises to reimburse depositors up to a specified ceiling if their bank becomes insolvent. Its core purpose is to prevent bank runs: if depositors trust that their money is safe regardless of the bank's condition, they have less incentive to withdraw funds en masse at the first sign of trouble. By stabilising deposit funding, the scheme also supports broader financial stability and protects the payments system.
The first nationwide scheme was the Federal Deposit Insurance Corporation (FDIC), created in the United States by the Banking Act of 1933 in response to the wave of bank failures during the Great Depression. The initial coverage ceiling was modest and has been raised several times; in 2008, during the global financial crisis, the standard FDIC limit was increased to USD 250,000 per depositor, per insured bank, per ownership category. The European Union harmonised national schemes through the Deposit Guarantee Schemes Directive (2014/49/EU), which set a standard coverage level of EUR 100,000 per depositor per bank across member states.
Schemes differ on several dimensions:
- Funding: ex-ante (pre-funded by levies on banks) or ex-post (assessments after a failure).
- Coverage scope: which deposits and which institutions are eligible.
- Administration: public agency, industry-run mutual, or hybrid.
Deposit insurance is widely associated with moral hazard: insured banks may take on greater risk, and depositors have weaker incentives to monitor them. Most regimes therefore pair insurance with prudential supervision, capital requirements, and resolution powers. The International Association of Deposit Insurers (IADI), established in 2002 and based in Basel, publishes the Core Principles for Effective Deposit Insurance Systems jointly with the Basel Committee. Debates intensified after the March 2023 failure of Silicon Valley Bank, when US authorities invoked a systemic-risk exception to cover uninsured deposits, reopening questions about coverage limits and uninsured-deposit concentration.
Example
After Silicon Valley Bank collapsed in March 2023, US regulators invoked a systemic-risk exception to guarantee all deposits, including those above the FDIC's USD 250,000 insurance limit.
Frequently asked questions
The FDIC insures up to USD 250,000 per depositor, per insured bank, per ownership category. The EU Deposit Guarantee Schemes Directive (2014/49/EU) sets a harmonised limit of EUR 100,000 per depositor per bank.
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