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Debt avalanche

Model paying the highest-interest debt first while keeping minimums on the rest.

Built and maintained by The NumberPrism Editorial TeamEditorial policy

Your details

Results update as you type. The formula and assumptions are explained below the calculator.

Debt-free in

30 months

Total interest$1,213.62
Highest-rate balance$4,200.00
Extra each month$180.00
First targetDebt A at 22.0%

Estimate only: assumes fixed rates, no new charges, minimum payments of about 2% of each balance (at least $20), and the extra rolling to the next debt.

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What does this tool do?

The avalanche method puts every spare dollar toward the debt with the highest APR, then rolls that payment to the next debt. It usually minimizes total interest, though it can take longer to see an account close.

The Formula

Each month: pay minimums, then send the extra to the highest-APR balance

Frequently Asked Questions

Avalanche or snowball?

Avalanche targets interest, snowball targets quick wins. The difference in total interest is often modest; pick the method you will stick with.

What if I cannot pay the minimums?

Contact each lender before missing a payment. This model assumes minimums are always paid.