Debt Payoff Calculator

How to use this calculator

Enter balance, APR, required payment, and any extra monthly payment. The calculator amortizes monthly and shows payoff time and estimated interest.

When this calculator is useful

• Credit card payoff planning
• Comparing minimum payments versus extra payments
• Understanding why high APR debt compounds quickly

Important limitations

Real credit-card minimums can change over time. Fees, new charges, promotional APRs, and late payments can alter results.

For best results, run at least three cases: a conservative case, a middle case, and a stretch case. If a small change in inputs creates a big change in the answer, that is a sign the decision may be sensitive to rates, fees, timing, or market performance.