The money multipliers are the same because they equate changes in the money supply to changes in the monetary base times some multiplier. Calculate the money supply, the currency deposit ratio, the excess reserve ratio, and the money multiplier. b.In monetary economics, the money multiplier is the ratio of the money supply to the monetary base (ie central bank money). Reveal a "WIN" symbol, AUTOMATICALLY WIN ALL 8 PRIZES. Major Point: An initial increase in funds available to the banking industry results in a MULTIPLE increase in the money supply. Three Step Process per Round: 1. The multiplier effect refers to the proportional amount of increase, or decrease, in final income that results from an injection, or withdrawal, of capital.