Federal funds rate

The federal funds rate refers to the interest rate that banks charge other banks for lending them money from their reserve balances on an overnight basis. By law, banks must maintain a reserve equal to a certain percentage of their deposits in an account at a Federal Reserve bank. Any money in their reserve that exceeds the required level is available for lending to other banks that might have a shortfall—Read more at Investopedia. Chen, James. “Federal Funds Rate.” 25 June 2019