Competition among banks for funds ties the RP rate closely to the federal funds rate. The RP rate has historically been below the federal funds rate because RPs are collateralized, which makes them safer than federal funds, and because arranging RPs entails additional transactions costs. Data on RP rates paid by banks to their corporate customers are not available, but from 1983 to 1990 the dealer RP rate (the rate government security dealers pay to obtain funds through RPs) was around 20 to 25 basis points below the federal funds rate. For reasons.
