Debt Payoff · Calculator

Free Debt Snowball Calculator

What is a debt snowball calculator?

Debt snowball focuses extra payment on the smallest balance first for quicker psychological wins.

Enter two balances, APRs, and total monthly debt budget to estimate total months and interest under snowball.

Snowball strategy: pay minimums, direct extra budget to smallest current balance first

Run the same numbers in avalanche mode to compare emotional momentum vs mathematical efficiency.

Real-life example (try this in the calculator)

Debt 1 is $1,200 at 15%, debt 2 is $6,500 at 22%, monthly debt budget is $280.

Line item Amount Calculator field
Debt 1 balance $1,200 Debt 1 balance ($)
Debt 2 balance $6,500 Debt 2 balance ($)
Debt 1 APR 15% Debt 1 APR (%)
Debt 2 APR 22% Debt 2 APR (%)
Monthly debt budget $280 Monthly payment budget ($)
Snowball estimate is about 39 months with total interest shown in results.

Snowball can improve consistency by creating early wins.

How to read your results

  • Estimated months (snowball) — Timeline estimate using smallest-balance-first payoff ordering.
  • Estimated total interest — Total modeled interest paid across both debts.
  • Monthly debt budget — Your fixed monthly payoff amount used in the simulation.

If budget is very tight, timeline can stretch dramatically. Increase budget when possible.

Quick questions

Not always. Avalanche often lowers interest cost, but snowball may improve follow-through.
This two-debt model uses snowball logic automatically; adjust balances to test scenarios.
Payoff can fail. Increase budget or reduce rates where possible.

Turn this into a real monthly plan. Set income, caps, and alerts in Ziko — free, no bank login.

Create Free Account →
← All Calculators Debt avalanche calculator →