Debt Payoff Calculator
Plan paying off several debts with the snowball or avalanche method.
Your Debt-Free Date, Worked Out Month By Month
List each debt with its balance, interest rate and minimum payment, add whatever extra you can pay each month, and see exactly when you will be debt-free, how much interest you will pay, and the order your debts will disappear in.
Two proven strategies are compared side by side with paying minimums only. The avalanche sends every extra dollar to the highest interest rate first and always costs the least. The snowball clears the smallest balance first for quick wins that keep people motivated. Either way, a cleared debt’s minimum rolls into the next target, and that snowballing is what shortens the whole plan.
Key features
- Snowball and avalanche compared with minimum payments.
- Debt-free date and total interest for each strategy.
- Payoff order with the month each debt is cleared.
- Warnings when a minimum does not even cover the interest.
- Up to 15 debts — cards, car loans, student loans, anything.
This tool runs entirely inside your browser using native Web APIs. Your files and text are never uploaded to a server, never logged and never shared with third parties.
How to use: Debt Payoff Calculator
- List your debts
Balance, APR and minimum payment from each statement. - Add an extra payment
Even a small fixed amount above the minimums makes a large difference. - Pick a strategy
Avalanche for the least interest, snowball for the fastest first win. - Follow the order
Pay minimums on everything and put the extra on the current target.
Technical specifications
| Processing location | Entirely in your browser — no server round trip |
|---|---|
| Data uploaded | None. Files and text never leave your device |
| Price | Free — no account, no trial, no usage cap |
| Category | Calculators |
| Works offline | Yes, once the page has loaded |
| Browser support | Chrome 90+, Edge 90+, Firefox 90+, Safari 15+ |
| Interface languages | English, 中文, हिन्दी, Español, العربية |
Frequently asked questions
Is the snowball or the avalanche method better?
The avalanche is mathematically cheaper because the most expensive debt shrinks first. The snowball often wins in practice because clearing a whole debt quickly keeps people going. The difference in interest is often small — this calculator shows it for your own debts.
Why does paying only the minimum take so long?
Minimums are set just above the monthly interest, so most of each payment goes to interest rather than the balance. On a high-rate card, minimum payments can stretch a few thousand dollars over a decade or more.
How is interest calculated here?
Each month, the balance grows by its APR divided by 12, and then the payments are applied. That matches how most credit cards and loans compound. Your lender’s exact method may differ slightly.
Should I pay off debt or save first?
Most guides suggest a small emergency fund first, then high-interest debt, because paying off a 22% card is a guaranteed 22% return. Low-rate debts such as mortgages are a different decision.
Is my information stored?
No. The calculation runs entirely in your browser; nothing you enter is sent or saved.