What Is the Difference Between Period Rate and Effective Interest Rate?

Learn how period rate and effective interest rate differ, including examples of compounding effects on annual rates.

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Period rate refers to the interest rate for a specific period, such as monthly or quarterly. Effective rate is the equivalent annual interest rate when compounding is considered, providing a true annual measure of interest. For example, a 1% monthly period rate results in an effective annual rate of 12.68% after compounding.

FAQs & Answers

  1. What is period rate in finance? Period rate is the interest rate applied over a specific time frame, such as monthly or quarterly, before compounding.
  2. How is effective interest rate calculated? Effective interest rate is calculated by considering compounding periods within a year to find the true annual interest rate.
  3. Why is the effective rate higher than the period rate? The effective rate is higher because it accounts for interest earned on previously accumulated interest through compounding.

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