Annual percentage rate
The terms Annual Percentage Rate and APR and nominal APR and effective APR -- some times abbreviated to EAR -- all describe the interest rate for a whole year (annualized), rather than just a monthly fee/rate, as applied on a loan, mortgage, credit card, etc.
It is a finance charge expressed as an annual rate.
Those terms have formal, legal definitions in some countries or legal jurisdictions, but in general:
- The nominal APR is the simple-interest rate (for a year).
- The effective APR is the fee+compound interest rate (calculated across a year).