Use this free debt payoff calculator to estimate when you could become debt-free, how much interest you may pay and what an extra monthly payment could save.
Enter your debt details
Additional fieldsOptional — test a faster payoff
Estimated payoff plan
This estimate assumes a fixed APR, no new charges or fees, and the same payment every month. Credit card rates, minimum payments and daily interest calculations can change actual results.
How the debt payoff calculator works
The calculator applies one month of interest to the remaining balance, subtracts your planned payment and repeats the process until the balance reaches zero. The final payment is reduced when less than a full monthly payment remains.
Your payment must be greater than the interest charged in the first month. Otherwise the balance will not fall under these assumptions.
Example debt payoff calculation
With a $10,000 balance at 18% APR and a $300 monthly payment, payoff takes about 47 months. The estimate updates automatically when you change the balance, APR or payment.
How extra payments can help
An extra payment reduces principal faster, so future interest is charged on a smaller balance. Open Additional fields to compare the estimated time and interest saved. Confirm that your lender applies extra money to principal and whether any prepayment restriction applies.
Frequently asked questions
Can I use this for credit card debt?
Yes, as a simplified estimate when you use one balance, one fixed APR and one planned payment. A card with new purchases, variable rates, fees or a changing minimum payment can produce different results.
Why does the calculator say my payment is too low?
If the payment is not greater than the first month’s interest, the modeled balance cannot decline. Increasing the payment or lowering the rate creates a payoff path.
Does this calculator include late fees?
No. It assumes no late fees, annual fees, new charges or penalties.
Should I use a debt snowball or debt avalanche?
The avalanche method prioritizes the highest APR and generally minimizes interest. The snowball method prioritizes the smallest balance and may offer faster motivational wins. This calculator models one combined balance at a time.
How accurate is the debt-free date?
It is an estimate based on monthly compounding and today’s date. Payment timing, daily interest and account changes can move the actual date.
Continue planning
Money Basics Hub provides educational information, not personalized financial, investment, tax or legal advice. Check account statements and lender terms before making repayment decisions.