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How does a bank run happen?

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Quick answer

A bank run happens when many customers rush to withdraw their money at once, fearing the bank will fail. Because banks lend out most deposits and keep only a fraction on hand, a wave of withdrawals can drain them and turn the fear into reality.

Step by step

  1. Many depositors try to withdraw at once, fearing collapse.
  2. Banks hold only a fraction of deposits as cash.
  3. Mass withdrawals can drain the bank quickly.
  4. Fear can become self-fulfilling, causing failure.

People also ask

How does a bank run happen?
Customers panic that a bank will fail and rush to withdraw, which can drain its limited cash and cause collapse.
Why can't a bank just give everyone their money?
Banks lend out most deposits, keeping only a fraction on hand, so they can't repay everyone at once.
How are bank runs prevented?
Through deposit insurance, central-bank support, and regulations that maintain confidence.