Free Debt Snowball Calculator

Pay the smallest balance first and see your debt-free date in seconds. No signup.

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  • Runs entirely in your browser
  • Your numbers are never sent to us

Your debts

Nothing you type here leaves your browser.

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Anything you can pay beyond the minimums. Leave blank for none.

Total going toward debt each month$0.00

Add at least one balance above and your results appear here — instantly, with no signup.

How to use this calculator

  1. 1Enter every debt you owe — a name you will recognize, the current balance, the APR from your statement, and the minimum payment your lender requires.
  2. 2Add anything you can put toward debt beyond those minimums. Leave it at zero to see what the minimums alone do.
  3. 3Read the results: the month your last balance hits zero, the total interest along the way, and the order the snowball clears your debts in.
  4. 4Change one number at a time — a larger extra payment, a lower rate after a balance transfer — and watch the date move. That is the fastest way to see which change matters most in your situation.

How the debt snowball method works

The debt snowball orders your debts from smallest balance to largest and ignores interest rates entirely. Every debt keeps receiving its minimum payment. Whatever you can pay above those minimums goes to the smallest balance until it is gone — then the whole payment that debt was absorbing moves to the next-smallest balance.

The amount leaving your account each month never changes. Only its destination does. That is the snowball: the payment aimed at a single debt grows every time one disappears, so the last debt often falls faster than the first, even though it is the largest.

What the method is optimizing for

The snowball is built around momentum rather than arithmetic. Any ordering that keeps the same monthly total finishes within a few months of any other, because the money going out is identical — what changes is which balance reaches zero first. The snowball front-loads those moments: the first account usually closes within months rather than years, and each closure makes the next payment noticeably larger.

The argument against it is straightforward. Interest accrues on rates, not on balances, so leaving a 25% card alive while you clear a 6% loan costs money. The argument for it is equally straightforward: a plan you abandon in month four saves nothing at all. Which matters more depends on you, not on the math, which is why this calculator reports what each ordering costs instead of telling you which to choose.

When the snowball costs the most

The gap between the two methods widens when your largest balance also carries your highest rate — a big credit card alongside a small, cheap loan, for example. Then the snowball spends months on the cheap debt while the expensive one compounds. It narrows to almost nothing when balances and rates line up in the same order, or when your extra payment is large enough that everything clears quickly either way.

If you want to see the size of that gap on your own numbers before committing to an order, the snowball vs. avalanche calculator runs both on the same debts and shows the difference in dollars and months.

Frequently asked questions

Is the debt snowball better than the debt avalanche?
They optimize for different things. The avalanche (highest rate first) nearly always pays the same or less interest, because it attacks the most expensive debt first. The snowball clears individual accounts sooner, which some people find easier to sustain. On most real debt loads the difference in total interest is a few hundred dollars and the difference in payoff date is a month or two — you can see the exact gap for your own numbers with the snowball vs. avalanche calculator.
Do I keep paying the minimums on my other debts?
Yes — that is what makes the method work rather than a way to fall behind. This calculator assumes every debt receives at least its minimum payment every month, and that only the money above those minimums is aimed at the smallest balance. Missing a minimum on another account adds late fees and penalty rates that no payoff ordering can outrun.
What counts as the extra payment?
Any money you can send beyond the minimums, from any source: a raise, a side income, a cancelled subscription, a tax refund spread across the year. The calculator treats it as the same amount every month. If yours varies, entering a conservative figure gives a date you are more likely to hit than an optimistic one.
My credit card minimum drops as the balance falls. Does this account for that?
No — the calculator holds each minimum at the number you enter for the life of the plan. Card issuers usually calculate the minimum as a percentage of the balance, so it shrinks as you pay down. If you pay only whatever the statement asks each month, payoff takes considerably longer than shown here. Holding the payment level is the behavior the snowball method assumes, and it is what this models.
What if a minimum payment does not cover the monthly interest?
Then that balance grows instead of shrinking, and the calculator says the plan never reaches zero rather than showing a date 50 years out. That is a real answer, not an error: it means the payment has to increase before any ordering of debts will finish. It is common on high-rate cards where the minimum is around 1-2% of the balance.
Do I have to create an account, and where do my numbers go?
No account, and nowhere. The entire simulation runs in your browser. The debts you enter are kept in this tab so they carry across to the other calculators, and they are gone when you close it. Nothing is sent to DebtWise or anyone else.

Save this plan and track real progress

This calculator forgets everything when you close the tab. DebtWise keeps your plan, updates it as balances change, and shows what each extra payment does to your date — for $19 once, not a subscription.

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How the numbers are calculated

Interest accrues monthly at the APR you enter divided by twelve, applied to the balance at the start of each month. Each debt receives its minimum payment; anything left over in your monthly total goes to the debt at the top of the order, and a debt’s minimum payment is added to that pool once it is cleared. The simulation stops after 600 months (50 years), so a plan whose payments never cover the interest is reported as never reaching zero instead of getting a date. Debts are ordered by current balance, smallest first, and re-sorted each month as balances change.

Results are estimates. They assume every payment is made on time, no new debt is added, and rates, fees, and promotional periods stay unchanged — real accounts vary in how they compound interest and apply payments, so your lender’s figures will differ somewhat.

This calculator is an educational tool, not financial advice, and using it does not create an advisory relationship. See our Terms of Use.

Built by DebtWise, a debt-payoff and budgeting app. The math here is the same engine that powers the app’s planner.

Last updated .