APR (annual percentage rate) the nominal yearly rate: the per-period rate multiplied by the number of periods, ignoring compounding. Where it's taught Interest, APR & APYBuy Now, Pay Later — or Save Up First? The True Cost of Financing a Purchase Try it with a calculator APR vs. APY CalculatorFinance Vs Save Calculator Related terms APY (annual percentage yield)BNPL (Buy Now, Pay Later)Cash discount / surchargeCompounding frequencyContinuous compoundingDeferred interestOpportunity cost