Loan Interest Rate Calculator Loan Interest Rate CalculatorCalculate the Effective Annual Rate (EAR) for an installment plan.Upfront Price (PV - Paid Now) Monthly Payment (PMT) Number of Payments (NPER - Months) Calculate Interest RateResultsTotal Loan Cost: --Interest Paid (Premium): --Effective Annual Rate (EAR / CAGR):--Annual Percentage Rate (APR): --