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Debt payoff calculator: snowball vs avalanche

Two well-known ways to clear multiple debts. One costs less, the other feels easier. Enter your own balances to see what the difference actually is for you. Everything stays in your browser.

What you owe

Add each debt

The avalanche method

Pay every minimum, then put everything spare against the debt with the highest interest rate. Mathematically this always costs the least, because you are killing the most expensive money first.

The snowball method

Pay every minimum, then put everything spare against the smallest balance. It costs more in interest, but debts disappear one by one early on, which many people find easier to sustain.

Which to choose

Run both above. If avalanche saves a meaningful amount, take it. If the gap is small, take snowball — the cheapest plan is worth nothing if you abandon it in month four.

What this ignores

Fixed rates, fixed minimums, no new borrowing, and no fees or promotional periods. It is an estimate for comparing two approaches, not a repayment schedule, and it is not financial advice.

Next step

A plan only works if you track the repayments.