Debt Snowball Calculator
Pay smallest balances first · Updated 2026
Must cover every minimum payment plus the extra you want to throw at the snowball.
How the debt snowball works
The debt snowball orders your debts from smallest balance to largest. You make the minimum payment on every debt, then throw any extra money in your monthly budget at the smallest balance first.
When the smallest debt is gone, you roll its full payment onto the next smallest. The payment snowballs in size, which is where the name comes from. This calculator sorts your debts for you and builds a month-by-month payoff schedule you can review before you commit.
This method is not the mathematically cheapest way to clear debt. Paying the highest APR first would save more in interest. The snowball wins on motivation, because the first payoff arrives quickly and keeps you going.
Setting a monthly budget that works
Your monthly budget must exceed the total of all minimum payments. The gap between the two is what attacks the smallest balance each month, and it grows as each debt is retired.
If the budget is below the sum of the minimums, the balances never shrink and the calculator warns you to raise it. Start with whatever extra you can sustain for a full year rather than a stretch number you will abandon after a few months.
The snowball and avalanche produce identical timelines whenever your budget is exactly the sum of the minimums. The strategies only differ in how you direct the extra cash.
When the snowball is the right choice
The method fits people who value early wins and a clear emotional payoff. Many financial coaches argue that a method you stick with beats a cheaper method you abandon.
Run both calculators side by side with your real balances before you commit. If the interest savings from the avalanche are modest, the snowball's faster first win may be worth the difference in cost.
| Debt | Balance | APR | Cleared in month |
|---|---|---|---|
| Card B | $1,000 | 18% | Month 6 |
| Card C | $4,000 | 10% | Month 20 |
| Card A | $5,000 | 24% | Month 33 |
Frequently Asked Questions
How is the snowball order decided?
Debts are sorted from smallest balance to largest. Each month you pay minimums everywhere and put the leftover budget on the first debt in that order.
How does the snowball compare to the avalanche?
The avalanche pays highest APRs first and usually costs less in interest. The snowball pays smallest balances first and delivers faster emotional wins. If your rates are similar, the strategies cost almost the same.
What happens to a debt's payment after it is paid off?
The amount that was going to that debt gets added to the next one. Your total monthly outlay stays the same while the pace accelerates.
Do I still pay minimums on all debts?
Yes. Every debt receives at least its minimum each month so nothing falls behind, and the extra cash goes to the current target.
What if my monthly budget is less than the minimums?
The balances grow and the calculator shows no completion date. Raise the budget above the minimum total, or contact your lenders about hardship options.