About the Debt Payoff Calculator
Enter a balance, interest rate and monthly payment to see the payoff date and total interest — then add an extra payment amount to see how many months and dollars you save.
Seeing that an extra $50/month saves years of payments is a powerful motivator.
How to use the Debt Payoff Calculator
- Enter current balance, APR and monthly payment.
- Read months to payoff and total interest.
- Try an extra monthly amount to see the savings.
Common uses
Credit card payoff planning
Comparing repayment strategies
Motivating extra payments
Frequently asked questions
Why does a small extra payment help so much?
Extra amounts go entirely to principal, which shrinks the base on which all future interest accrues — the effect compounds.
What if my payment barely covers interest?
The tool warns you when payoff would take excessively long or the balance would grow — a sign the payment must increase.
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