Debt Payoff Calculator

How to use

1. 1Pick a payoff strategy: Avalanche (highest APR first), Snowball (smallest balance first), or a Custom order you control.
2. 2List each debt with a name, current balance, APR, and minimum monthly payment. Click Add debt to add more rows, or use the arrow buttons to reorder.
3. 3Enter any extra monthly payment you can put toward debt on top of the minimums, then pick your currency.
4. 4Read the payoff date, total interest, and payoff order. Compare Snowball and Avalanche side by side in the built-in table.
5. 5Click Show schedule for the month-by-month breakdown, or Copy CSV to drop the full schedule into a spreadsheet.

About this tool

Debt Payoff Calculator builds a complete payoff plan across as many debts as you want and shows exactly when each one becomes zero. Enter a balance, an APR, and a minimum monthly payment for every debt (credit cards, store cards, auto loans, personal loans, student loans, medical bills, and so on), then add an optional fixed extra amount you can put toward debt each month. Pick a strategy and the tool simulates the payoff month by month: Avalanche routes every extra dollar to the debt with the highest APR first, mathematically minimizing total interest; Snowball routes every extra dollar to the debt with the smallest balance first, giving early wins that help people stay consistent; and Custom order lets you set your own priority by reordering the rows. As each debt closes, its freed minimum automatically rolls into the next priority debt, the way real-world payoff plans work. The output shows the payoff time in years and months, the calendar month you become debt free, the total interest you will pay, and a stepped payoff order with each debt's individual payoff month. A built-in Snowball vs Avalanche table runs both strategies on the same inputs so you can see exactly how much interest and how many months the smallest-balance order would cost you compared to the highest-APR order, then decide which trade-off fits your situation. Expand the monthly schedule to see month-by-month payment, interest, principal, and remaining balance for every debt, and use Copy CSV to drop the schedule straight into a spreadsheet. Math runs locally in your browser with no signup, no upload, and no tracking, so balances and interest rates stay on your device. The model assumes fixed APRs and no fees, late charges, promotional rates, or balance transfers, so confirm exact figures with your lender before making decisions.

Free to use. Works in your browser. No signup, no login.