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Debt-Free Date Calculator

Enter your debt balance, interest rate, and monthly payment to find your exact payoff date and total interest cost.

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How the Calculation Works

The payoff timeline uses the standard loan amortization formula. Each month, interest is charged on the remaining balance, and the rest of your payment reduces the principal.

Monthly Interest = Balance × (APR ÷ 12 ÷ 100)
Months = −log(1 − (Balance × r) ÷ Payment) ÷ log(1 + r)

Example: $8,500 at 19.99% APR with $250/month payments: monthly rate = 19.99%/12 = 1.666%. Monthly interest on first payment = $141.61. Principal reduction = $108.39. Payoff in approximately 50 months with $3,966 total interest paid.

Frequently Asked Questions