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This calculator uses the Effective Annual Rate (EAR) to accurately compute the interest rate per payment period when your payment frequency differs from the interest compounding frequency.
Why Use the Effective Annual Rate?
The EAR accounts for the impact of interest compounding over the year, ensuring that the interest rate per payment period reflects the true cost of borrowing.
How We Calculate the Interest Rate Per Payment Period:
1. Calculate the EAR: Convert the nominal annual interest rate to the EAR using the formula:
EAR = (1 + (Nominal Rate / Compounding Periods))Compounding Periods – 1
2. Determine the Interest Rate Per Period: Calculate the rate per payment period based on your payment frequency:
Interest Rate Per Period = (1 + EAR)1 / Payments Per Year – 1
Why Results May Differ from Other Calculators:
Some calculators may use different methods to compute the interest rate per period, leading to varying results. Our method aligns with standard financial practices to provide accurate calculations.
Example Calculation:
Suppose you have a nominal annual interest rate of 5% with monthly compounding. Here’s how the EAR and interest rate per period are calculated:
Key Benefits of Using the EAR Method:
FAQ:
The nominal interest rate is the stated annual rate without accounting for compounding within the year. The effective annual rate (EAR) includes the effects of intra-year compounding, providing a more accurate representation of the actual interest accrued.
Yes! This calculator allows you to choose between monthly, bi-weekly, and quarterly payment frequencies, adjusting the interest rate per period accordingly to ensure accurate calculations.
