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Written by George A. Selgin
Last Updated
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Bank

Written by George A. Selgin
Last Updated

Deposit insurance

Rationale for deposit insurance

Most countries require banks to participate in a federal insurance program intended to protect bank deposit holders from losses that could occur in the event of a bank failure. Although bank deposit insurance is primarily viewed as a means of protecting individual (and especially small) bank depositors, its more subtle purpose is one of protecting entire national banking and payments systems by preventing costly bank runs and panics.

In a theoretical scenario, adverse news or rumours concerning an individual bank or small group of banks could prompt holders of uninsured deposits to withdraw all their holdings. This immediately affects the banks directly concerned, but large-scale withdrawals may prompt a run on other banks as well, especially when depositors lack information on the soundness of their own bank’s investments. This can lead them to withdraw money from healthy banks merely through a suspicion that their banks might be as troubled as the ones that are failing. Bank runs can thereby spread by contagion and, in the worst-case scenario, generate a banking panic, with depositors converting all of their deposits into cash. Furthermore, because the actual cash reserves held by any bank ... (200 of 11,416 words)

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