Monetary Base (High-Powered Money) vs Money Supply
Monetary Base (High-Powered Money) and Money Supply are two Money & Monetary Policy concepts in AP Economics that students often mix up. In short: monetary base (high-powered money) is the monetary base, or high-powered money, is currency in circulation plus bank reserves, the money the central bank directly controls. Meanwhile, money supply is the money supply is the total amount of money circulating in an economy, including cash and checkable deposits. Here is how they compare side by side.
The monetary base, or high-powered money, is currency in circulation plus bank reserves, the money the central bank directly controls.
It is called 'high-powered' because each dollar of base can support a larger change in the broader money supply through the multiplier as banks lend. The base differs from M1/M2: it includes bank reserves (not in M1) but excludes the deposit expansion that reserves enable. The Fed changes the base mainly through open market operations.
The money supply is the total amount of money circulating in an economy, including cash and checkable deposits.
Central banks influence it through open market operations, the reserve requirement, and the discount rate. Common measures are M1 (most liquid) and M2 (broader). Changes in the money supply affect interest rates and aggregate demand.
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