The money multiplier is 5. And the total money supply increase by $2,000 million if the Federal Reserve increases reserves by $400 million.
Given,
The Federal Reserve sets the reserve requirement at 20%.
Banks hold no excess reserves, and no additional currency is held.
The money multiplier formula can be used to calculate the total amount of new deposits or money created.
Money multiplier = 1/reserve ratio
= 1/0.20
= 5
change in Total money supply = Money multiplier × change in reserves
= 5 × $400 million
= $2,000 million
Hence, The money multiplier is 5. And the total money supply increase by $2,000 million if the Federal Reserve increases reserves by $400 million.
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