Debt Payoff Calculator
See how fast you can be debt-free. Add each debt with its balance, interest rate and minimum payment, then add any extra you can pay each month. Choose the snowball method (smallest balance first, for quick wins) or the avalanche method (highest interest first, for the lowest total cost) and the calculator shows your payoff time and total interest.
Frequently asked questions
What's the difference between the snowball and avalanche methods?+
The snowball method pays off your smallest balance first for fast motivation; the avalanche method targets the highest interest rate first to minimise total interest. Both pay minimums on everything else and throw any extra at the target debt.
How does paying extra help so much?+
Extra payments go straight to principal, so less interest accrues every month after. As each debt clears, its payment rolls onto the next one — the 'snowball' effect — which accelerates over time.
Is my data saved?+
No. Everything is calculated in your browser and nothing is stored or sent anywhere.