Federal funds rate
Explanation of federal funds rate decisions

When the FOMC wishes to reduce interest rates they will increase the supply of money by buying government securities. When additional supply is added and everything else remains constant, the price of borrowed funds – the federal funds rate – falls. Conversely, when the Committee wishes to increase the federal funds rate, they will instruct the Desk Manager to sell government securities, thereby taking the money they earn on the proceeds of those sales out of circulation and reducing the money supply. When supply is taken away and everything else remains constant, the interest rate will normally rise.
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