Interest Rate & Cost of Borrowing Calculator

Calculate the implied annual interest rate based on loan principal, loan term, and monthly payment amount.

🌍 Select Currency / Region:
$
$
Calculated Annual Interest Rate
6.77%
Total Repayment Amount
$28,560
Total Interest Paid
$3,560

About Interest Rate Calculator - Solve for Rate from Loan Payments

When lenders present a monthly payment quote without clearly disclosing the interest rate, this reverse calculator solves for the exact annual percentage rate.

💡 How to Use This Calculator

  1. Enter the total loan amount, term in months, and quoted monthly payment.
  2. View the hidden annual interest rate.

⚡ Key Features & Considerations

🧮 Reverse Loan Solver

Solves for non-linear interest rate variables instantly.

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Frequently Asked Questions

Why is solving for interest rate non-linear?

Because interest appears in both numerator and exponent in loan equations, requiring numerical approximation.