Who Regulates Your Bank, and What Happens When One Fails
Key takeaways
- Depending on its charter, a bank is supervised mainly by the Comptroller of the Currency, the Federal Reserve, or the FDIC, along with state regulators. Credit unions answer to the NCUA.
- Deposits are insured up to 250,000 dollars per depositor, per bank, for each ownership category, and no one has lost an insured penny since 1934.
- Large banks face higher capital requirements, annual stress tests from the Federal Reserve, and plans for how they could be wound down.
- The Consumer Financial Protection Bureau enforces consumer rules at large banks, and the Bank Secrecy Act requires banks to report suspicious transactions to the Treasury.
- When a bank fails, the FDIC usually sells it over a weekend. In 2023 regulators protected all deposits at two failed banks to stop a wider run.
- Six small banks failed in 2026 through September, as regulators eased several rules adopted after the 2008 crisis.
The United States has one of the most complicated systems of bank regulation in the world, the product of a century and a half of crises and compromises. Which agency watches a bank depends on how it is chartered and how big it is, and several agencies may share the job.
This guide explains who regulates banks and credit unions, how deposit insurance protects savers, what happens when a bank fails, and the debate over how much regulation is enough.
When a bank fails, its regulator closes it and the FDIC takes over as receiver, usually on a Friday, selling the bank to a healthier one or paying insured depositors directly, and it must choose the option that costs the insurance fund the least. In March 2023 Silicon Valley Bank and Signature Bank collapsed in days after runs by uninsured depositors, and the Treasury, the Fed, and the FDIC invoked a systemic risk exception to protect all deposits, while the Fed offered emergency loans to other banks. First Republic failed that May. Since then failures have been small: six banks failed in 2026 through September, the largest with about 736 million dollars in assets. For giant financial firms, the Dodd-Frank Act created an orderly liquidation authority as an alternative to bankruptcy.
The Consumer Financial Protection Bureau writes rules for mortgages, credit cards, overdrafts, and other products and examines banks with more than 10 billion dollars in assets, while smaller banks are checked for consumer compliance by their usual regulator. The bureau was sharply cut back in 2025. Under the Bank Secrecy Act, banks must verify customers' identities, report cash transactions over 10,000 dollars, and file suspicious activity reports with the Treasury's Financial Crimes Enforcement Network, and they must block transactions with sanctioned people. An August 2025 executive order directed regulators to stop banks from closing accounts for political or religious reasons, and a July 2025 law brought issuers of payment stablecoins under federal and state supervision.
Federal deposit insurance began on January 1, 1934, after thousands of bank failures wiped out savings in the Depression. Today the FDIC insures deposits up to 250,000 dollars per depositor, per bank, for each ownership category, such as individual, joint, and retirement accounts, and the NCUA provides the same coverage at credit unions. The insurance is funded by premiums paid by banks into the Deposit Insurance Fund and backed by the full faith and credit of the United States. No depositor has lost an insured dollar since the system began. The 2023 failures showed the risk of large uninsured deposits held by businesses, prompting proposals to raise limits for business accounts.
Examiners review each bank's capital, assets, management, earnings, liquidity, and sensitivity to market risk, and can order changes or close a bank that becomes insolvent. Capital rules require banks to fund themselves partly with shareholders' money rather than borrowing. Since the 2008 crisis, the largest banks have faced higher capital requirements, annual stress tests run by the Federal Reserve, and living wills explaining how they could be wound down. A 2018 law raised the size at which the strictest rules apply. In 2025 regulators dropped reputational risk from examinations, eased a leverage requirement for the largest banks, and revisited a pending overhaul of capital rules, steps supporters called overdue relief and critics called a weakening of post-crisis safeguards.
Since the Civil War the United States has had a dual banking system: a bank can take a national charter from the Office of the Comptroller of the Currency or a state charter from a state banking department. State banks that join the Federal Reserve System are supervised by the Fed along with their state, and those that do not are supervised by the FDIC and their state. The Fed also oversees the holding companies that own most large banks. Credit unions are chartered and insured by the National Credit Union Administration or by states. In 2025 the administration discussed consolidating the federal bank regulators, which would require action by Congress.
Supporters of lighter regulation say post-2008 rules raised costs, pushed lending to less regulated firms, and fell hardest on community banks, and that supervisors should focus on financial risk rather than reputation or politics. Supporters of stronger rules point to 2023 as proof that midsize banks need closer oversight and higher capital, and they warn that easing rules invites the next crisis. Other disputes concern whether large banks are still too big to fail, whether regulators are too close to the industry they oversee, how to regulate crypto and financial technology firms, and how much independence banking agencies should have from the President after the 2025 removals and the Supreme Court's 2026 ruling in Trump v. Slaughter.
Learn about the central bank in the Federal Reserve explained, the other financial watchdogs in the regulatory commissions, or the FDIC and its relatives in government corporations explained.