How the debt snowball payoff is calculated

This calculator simulates paying the minimum on every debt each month while directing all extra payment toward the debt with the smallest balance. Once that debt is paid off, its former minimum payment gets rolled into the next-smallest debt, so your payoff power grows every time a debt disappears — continuing until every balance reaches zero.

How to use this debt payoff calculator

1. Enter each debt’s balance, minimum payment, and interest rate.
2. Enter how much extra you can pay each month.
3. Click Calculate Payoff Plan to see your debt-free timeline and total interest.

Prefer paying highest interest first instead? That’s the „avalanche“ method — usually cheaper in total interest, though the snowball method here is built for motivation through quick wins.

Snowball vs. avalanche method

The snowball method used by this calculator pays off your smallest balance first for quick psychological wins, then rolls that payment into the next-smallest debt. The avalanche method instead targets your highest-interest debt first, which usually saves more money in total interest but can feel slower since the highest-interest debt isn’t always the smallest.

Factors that affect your payoff timeline

• Extra payment amount: The most powerful lever you control — even a modest extra payment can cut years off your timeline.
• Number of debts: More debts mean more minimum payments locked in before extra money can be applied.
• Interest rates: High-interest debt like credit cards grows faster if left untouched, which is why many people combine strategies — avalanche for the highest-rate debt, snowball for motivation on the rest.

Tips for paying off debt faster in 2026

Stop adding new charges to cards you’re paying down, since new spending undermines your progress. Consider whether a balance transfer or debt consolidation loan (see our loan calculator) could lower your effective interest rate. Redirect windfalls — tax refunds, bonuses, side income — directly at your target debt rather than everyday spending.

Expert insight: snowball vs. avalanche, according to the data

Dave Ramsey has long argued for the debt snowball — paying off the smallest balance first — because, in his words, „most people need those small victories to stay engaged,“ and a widely cited Harvard Business Review study found that starting with the smallest debt does help people stick with a payoff plan to the end. The tradeoff acknowledged even by snowball advocates: the avalanche method (highest interest rate first) usually saves more in total interest. Which approach fits you genuinely depends on whether you’re more likely to quit without early wins, or disciplined enough to wait for the bigger long-term payoff.

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