The
cost of funds or
interest rate for an entire year expressed as a single percentage. Significantly, the APR does not account for
compounding. For example, if the APR is 36%, the percentage is 3% per month, but the interest rate or cost of funds for the entire year may be greater than 36% due to the effects of compounding. By law, a
credit card company or other
lender must inform the customer of the APR before any agreement is signed. The APR provides the customer with a convenient number against which to compare the
cost of funds for other
loans or
investments. It is less commonly called the annual rate of return or the nominal annual rate.