



An annual percentage rate, often referred to by its acronym APR, is the yearly interest due on a loan, including interest and other fees, expressed as a percentage of the amount borrowed. Because the annual percentage rate incorporates all fees associated with the loan, the annual percentage rate can be used to determine the true cost of borrowing a given amount of money. The annual percentage rate is important as a standardized measure of the cost of borrowing money; the annual percentage rate allows for the comparability of interest rates across lenders. In fact, lenders are required by law to tell borrowers what their annual percentage rate would be on a loan. The annual percentage rate is calculated by multiplying the periodic interest rate by the number of periods in a year.
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