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Free Debt Snowball Calculator (Google Sheets & Excel)

List your debts smallest balance first, add the extra you can pay each month, and see months-to-payoff for every debt — with your extra aimed at the top of the list, the way the snowball method works.

Download free (.xlsx) How to use it

Works in Google Sheets & Excel · no signup, no watermark, actually free

What's in it

Smallest-first ordering

The snowball's power is early wins. The sheet aims your extra payment at the first unpaid debt on the list.

Real payoff months

Months-to-clear computed from balance, APR, and payment — including a warning when a payment doesn't even cover interest.

Total debt in one number

Sometimes seeing it is the kick. Sometimes it's smaller than the dread suggested.

How to use it

Download the file — the button above grabs the .xlsx.
Google Sheets: drive.google.com → New → File upload → open it → File → Save as Google Sheets. Excel: just open it.
Enter your extra amount — whatever you can put beyond minimums, even $25.
List debts smallest balance first with balance, APR, and minimum payment.
When the first debt clears, roll its whole payment into the next one and delete the cleared row. Repeat until the list is empty.
The one rule: shaded cells are yours to type in. Everything else computes itself.

Questions

Snowball or avalanche?

Snowball (smallest first) wins on behavior; avalanche (highest APR first) wins on math. For most people the interest difference is smaller than the motivation difference — our honest comparison runs the numbers.

What does the paid toolkit add?

Complete multi-debt plans for both strategies with rollover math done for you: focus order, payment schedule, debt-free dates, and total interest compared side by side.

My "months left" says payment too low.

That debt's payment doesn't cover its monthly interest, so the balance grows. It needs a bigger minimum or a spot at the top of the list — this is exactly the thing worth knowing early.

Want the whole plan, not just the list?

The Debt Payoff Toolkit builds both payoff strategies with every rolled-over dollar accounted for, and tells you your debt-free date. $19 once.

See the Debt Payoff Toolkit