The rate of interest a commercial bank must pay when it borrows from its federal reserve bank. Consequently, the discount rate is the rate of interest the banking system carries within its own framework. Member banks may take certain promissory notes that they have received from customers and sell them to their district federal reserve bank for less than face value. With the funds received, the banks can make further loans. Changes in the discount rate may cause banks and other lenders to reexamine credit policies and conditions.