Skip to content

Debt Avalanche Calculator

Avalanche against snowball, with the price of choosing.

Work out Debt Avalanche. Avalanche against snowball, with the price of choosing. Shows the number in today's money too.

Written and maintained by Mohit PatelLast checked August 4, 2026How we build these

Comma separated, one per debt.

%

Time to clear everything

32 months

2,366 of interest · Avalanche

Months to clear32
Years2.7
Total interest2,366
Total paid2,366
1. Debt 1 — 22.0%cleared month 21, 1,022 interest
2. Debt 2 — 12.0%cleared month 25, 376 interest
3. Debt 3 — 7.0%cleared month 32, 968 interest
The other strategy would cost2,659

Avalanche pays the highest interest rate first and always costs less in total — that is arithmetic, not opinion. Snowball pays the smallest balance first and clears individual debts sooner. Here the difference is 293 in interest, which is the honest price of choosing the strategy you will actually stick with. The evidence that people persist with snowball more often is a real finding rather than a consolation prize, and a plan followed beats an optimal plan abandoned. Both figures are shown so the trade-off is visible rather than assumed. Whichever you pick, the freed-up minimum payment from each cleared debt rolls into the next one — that rolling is what makes either method accelerate.

How the Debt Avalanche Calculator works

List your balances, rates and minimums for a month-by-month payoff plan. Both strategies are computed so the trade-off is visible: avalanche always costs less in interest, and the difference is shown in money rather than asserted.

Also known as: debt snowball calculator · debt payoff calculator · which debt to pay first · debt free date calculator

Not financial advice. This calculator is for planning and illustration, not financial advice. Real products carry fees, taxes, and terms it does not model. Confirm figures with your lender or a qualified adviser before committing.

Frequently asked questions

What is the difference between avalanche and snowball?

Avalanche pays the highest interest rate first and always costs less overall. Snowball pays the smallest balance first and clears individual debts sooner, which many people find easier to sustain.

Which one should I use?

Avalanche is cheaper — that is arithmetic. But a plan you abandon saves nothing, and the evidence that people persist with snowball more often is a real finding. This page shows the cost difference so you can decide with the number in front of you.

Why do both accelerate over time?

Because each cleared debt frees its minimum payment, which rolls into the next one. The payment against the remaining debt grows every time one is cleared, which is where the snowball metaphor comes from.

Should I consolidate instead?

Only if the new rate is genuinely lower after fees, and only if you stop using the cleared cards. Consolidation that lowers the payment by extending the term often raises total interest.

Put this calculator on your own site

Free to use, on any site, commercial or not. Paste this where you want it to appear. It is a plain iframe, so it works in WordPress, Squarespace, Wix, Webflow, Ghost and anything else that accepts HTML.

The one-line version
<iframe src="https://www.thecalclibrary.com/embed/debt-avalanche-calculator" width="100%" height="640" style="border:1px solid #e2e8f0;border-radius:12px" loading="lazy" title="Debt Avalanche Calculator"></iframe>
<p style="font:13px/1.5 system-ui,sans-serif;margin:6px 0 0;color:#64748b">Powered by <a href="https://www.thecalclibrary.com/debt-avalanche-calculator" style="color:#64748b">Debt Avalanche Calculator</a> from The Calc Library</p>

The only condition is that the credit line below the frame stays in place. That one line is what pays for the tool being free — it is how anyone else finds it.

Related calculators