About Effective Interest Rate CalculatorThe Effective Interest Rate Calculator is used to calculate the effective annual interest rate based on the nominal annual interest rate and the number of compounding periods per year. Show What is Effective Interest Rate?The effective interest rate is the interest rate on a loan or financial product restated from the nominal interest rate as an interest rate with annual compound interest payable in arrears. It is used to compare the annual interest between loans with different compounding terms (daily, monthly, quarterly, semi-annually, annually, or other). It is also called effective annual interest rate, annual equivalent rate (AER) or simply effective rate. What Is The Formula of Calculating Effective Interest Rate?The effective interest rate is calculated as if compounded annually. The following is the calculation formula for the effective interest rate: r = [1 + (i/n)]n - 1 Where: If the compounding is continuous, the calculation will be: r = ei - 1 Where: Effective Interest Rate TableThe effective interest rate table below shows the effective annual rate based on the frequency of compounding for the nominal interest rates between 1% and 50%:
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