Debt Payoff Calculator (Avalanche vs. Snowball)

List your debts, add whatever extra you can pay each month, and compare the two best-known payoff methods: avalanche (highest interest rate first) and snowball (smallest balance first). You will see how long each takes and how much interest you pay.

Your numbers

Debt 1
Debt 2
Debt 3
Debt 4

Debt-free in

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Method comparison
MethodMonthsInterest
Avalanche
Snowball

Estimate only, not tax or financial advice. It assumes fixed interest rates, no new charges, and that interest is charged monthly at APR ÷ 12. Card issuers calculate interest daily and minimum payments often change as balances fall, so real results will differ a little.

How this works

Each month interest is added to every balance, every debt gets its minimum payment, and everything left over (your extra payment plus minimums freed up from debts you have finished) goes to the target debt: the highest APR for avalanche, the smallest balance for snowball. The "Debt-free in" figure is the avalanche result.

Sources

Figures checked against the sources above on October 24, 2026. By Fintrovert.