Federal discount rate
Prime rate, federal funds rate, COFI
What it means: The interest rate at which an eligible financial institution may borrow funds directly from a Federal Reserve bank. Banks whose reserves dip below the reserve requirement set by the Federal Reserve's board of governors use that money to correct their shortage. The board of directors of each reserve bank sets the discount rate every 14 days. It's considered the last resort for banks, which usually borrow from each other.
How it's used: The Fed uses the discount rate to control the supply of available funds, which in turn influences inflation and overall interest rates. The more money available, the more likely inflation will occur. Raising the rate makes it more expensive to borrow from the Fed. That lowers the supply of available money, which increases the short-term interest rates. Lowering the rate has the opposite effect, bringing short-term interest rates down.
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