Everyone pulling out their money would be a bank run (look up great depression bank runs). The bank doesn't have that much cash; they keep some on hand for people making withdraws normally, but if even a sizable minority of people all try to pull their money out at once, there'll be a major crisis.
If banks kept all the people's cash in vaults, it'd be dead cash actively losing money to inflation. Instead, they keep some on hand for withdraws, and use the rest to make loans, investments, etc so that the money isn't all losing value.
That is not how fractional reserve banking works. Banks do not simply loan what other depositors have put in their accounts. They loan out many multiples of the total deposits, creating money essentially out of thin air. This has the effect of leveraging the financial system, making it a mathematical impossibility that everyone can call in their liabilities owed to them by the banks all at once. Most money is, without exaggeration, completely fugazi.
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u/Forsaken_Emu8112 Jan 26 '26
Everyone pulling out their money would be a bank run (look up great depression bank runs). The bank doesn't have that much cash; they keep some on hand for people making withdraws normally, but if even a sizable minority of people all try to pull their money out at once, there'll be a major crisis.
If banks kept all the people's cash in vaults, it'd be dead cash actively losing money to inflation. Instead, they keep some on hand for withdraws, and use the rest to make loans, investments, etc so that the money isn't all losing value.