The short-term interest rate that is charged on a type of loans known as broker loans or call loans. It is the rate that banks charge brokers aiming to secure loans to finance investors in securities. Such loans are also known as margin loans. The broker, in turn, charges the investor (borrower) the call loan rate plus a service charge. Brokers seek to profit on the margin loans extended to their clients, and hence, margin loan rates are typically priced at the broker loan rate plus a premium corresponding to the service charge.

This rate is also referred to as a call money rate or a call rate or a call loan rate.