Free tools·Debt payoff

DEBT PAYOFF CALCULATOR

Snowball or avalanche? Compare the estimate.

Enter your debts, APRs and monthly payments to compare two common payoff approaches. Plumb estimates the payoff timeline and interest using the numbers you provide.

Your debt snapshot

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This is added to the minimum payments entered above and rolled toward the next debt as balances are paid off.

Debt snowball vs. debt avalanche

Both approaches keep making payments on all active debts while directing extra payment capacity toward one balance at a time. The difference is which balance gets priority.

Debt snowball

The snowball method prioritizes the smallest balance first. Once that balance is paid, its payment capacity rolls to the next-smallest balance. The appeal is visible progress: individual balances can disappear sooner.

Debt avalanche

The avalanche method prioritizes the highest APR first. Because higher-rate debt is targeted earlier, avalanche often produces a lower estimated interest cost when all other inputs stay the same.

What this calculator assumes

The estimate applies the APRs and payment amounts you enter on a monthly basis. It assumes no new charges, fees, promotional-rate changes or missed payments. Real lender calculations, statement cycles and minimum-payment formulas can differ.

How to use the result

Compare the estimated payoff time and interest under both methods. The method that looks best mathematically may not be the one you find easiest to follow, so treat the comparison as a planning aid rather than a recommendation.

Educational estimate only. Plumb does not provide lending, investment, tax or legal advice. Calculations are based solely on the information entered and may differ from actual creditor statements or payoff amounts.

Keep the full picture in Plumb.

Use the web calculator for a quick scenario, then organize debts, targets, cash flow and progress together in Plumb for iPhone.

View Plumb on the App Store