What is the full form of APR ? - Annual Percentage Rate - Annual Percentage Rate ( APR ) is the equivalent interest rate considering all additional costs charge Understand APR on credit cards: APR full form , meaning, what it is, how it's calculated, when it's applied, and its types. Learn all about Annual Percentage Rate. APR stands for Annual Percentage Rate, which is the annual interest rate and fees charged by a lender for a loan or an investment. Learn how to calculate APR , the difference between APR and nominal interest rate, and the benefits of APR over standard interest rate. Learn what APR (annual percentage rate) is, how it’s calculated, and how to compare rates across loans and lenders. Includes examples and a step-by-step guide to calculate APR .