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Debt Snowball Calculator: Smallest Balance First

Plan how up to five debts get paid off with the snowball or avalanche strategy: debt-free date, total interest, payoff order and the savings between the two.

Debt 1

Debt 2

Debt 3

Debt 4

Debt 5

Fill in only the debts you have — untouched rows are ignored. Amounts are plain numbers and work with any currency.

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Reading the debt list
Simulating the monthly payments
Comparing snowball and avalanche

Result

This page opens the debt payoff calculator with the snowball strategy preselected: list your debts, and every spare unit of money goes to the smallest balance while the rest receive their minimums.

The snowball method is built for motivation. Small debts disappear first, each closed account frees its minimum payment for the next target, and the growing payment — the snowball — hits the bigger balances with more and more force. Mathematically it usually costs somewhat more interest than the avalanche order, and the calculator always prints that difference so you choose with open eyes.

You get the debt-free month, the total interest for the whole plan and the exact order in which the debts close — all simulated month by month in your browser, with nothing uploaded anywhere.

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Your files and inputs never leave this device. Processing runs completely offline. 100% Secure.

Accepted Formats & Rules

  • Up to five debts, each with an optional name, balance, APR and minimum monthly payment.
  • Month-by-month simulation: interest = balance × APR/12, minimums to every debt, extra money and freed-up minimums to the target debt.
  • Snowball (smallest balance first) and avalanche (highest APR first) strategies with a payoff order list.
  • Honest guard: a minimum payment that does not cover the monthly interest is reported as never paying off.

Key Benefits

✓ See the month you become debt-free instead of guessing — the whole plan is simulated payment by payment.
✓ Snowball and avalanche are both computed on every run, so the interest difference between them is always shown.
✓ Balances and payments are plain numbers in any currency, and nothing about your debts leaves the browser.

Use Cases

  • • See the exact month a stack of credit cards and loans reaches zero with your current payments.
  • • Decide between the snowball and avalanche order by the interest difference on your real balances.
  • • Check what an extra monthly payment does to the debt-free date and the total interest.
  • • Test whether a card's minimum payment actually covers its monthly interest — or keeps the debt alive forever.