Annual Percentage Rate (APR) is a standardised measure of the total cost of borrowing — expressed as a yearly interest rate — that includes not just the nominal interest rate but also all associated fees, processing charges, insurance premiums, and other mandatory costs of the credit facility. APR is designed to provide borrowers with a single, comparable figure for evaluating the true cost of different loan products — making it more informative than the nominal interest rate alone, which excludes ancillary charges. For example, a home loan with a nominal rate of 8.5% per annum but including processing fees of 1% and mandatory insurance costs may have an effective APR of 9.2% — revealing the true annual borrowing cost. In India, the RBI mandates that all scheduled commercial banks and NBFCs disclose the Annual Percentage Rate (or its equivalent, the Annual Percentage Yield for deposits) to retail borrowers under the Fair Practice Code — ensuring transparency in consumer credit pricing. APR is particularly important for comparing personal loans, credit card interest rates, and buy-now-pay-later products where headline rates may obscure significant processing fees. For credit cards in India, the APR is typically very high — ranging from 36% to 48% per annum — making outstanding credit card debt one of the most expensive forms of consumer borrowing, far more costly than personal loans or gold loans at similar risk profiles.