5.14
The Federal Reserve, or the Fed, controls the U.S. money supply using three main tools: the required reserve ratio, the discount rate, and open market operations.
Banks in the Federal Reserve system operate under a fractional reserve system, where the required reserve ratio is the percentage of deposits they must hold in reserve—either in their vaults or with the Fed—and cannot be lent out.
For example, if the ratio is ten percent, a one-hundred-dollar deposit means the bank must hold ten dollars and may lend ninety dollars.
A lower reserve ratio gives banks more freedom to lend, increasing the money supply. A higher ratio restricts such lending, slowing the expansion of the money supply.
In March 2020, in response to the economic crisis triggered by the COVID-19 pandemic, the Fed reduced the reserve requirement to zero percent for most depository institutions. This move was aimed at freeing up more capital for lending and supporting economic activity.
Since then, the reserve requirement has played a limited role in day-to-day monetary policy.
Open market operations (OMO) are a central instrument in modern monetary policy, enabling central banks like the Federal Reserve to influence liquidit…
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