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
- Enter the total loan amount, term in months, and quoted monthly payment.
- 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.