How this calculator works
Each month every debt gets its minimum payment, and the extra goes to one target debt.
Avalanche targets the highest interest rate first, which saves the most money.
Snowball targets the smallest balance first, which clears accounts sooner and can keep motivation high.
When a debt is paid off, its payment rolls into the next target, so the amount attacking debt never drops.
Worked example
Four debts totalling $31,200 with $840 a month
- Minimums total $640, plus $200 extra.
- With avalanche, the 29.9% store card and 24.9% Visa go first.
- Debt-free in about 3 years 8 months, with about $5,200 of interest.
Questions people ask
Avalanche or snowball?
Avalanche is mathematically cheaper; snowball gives quicker wins. The best one is the one you will stick with.
How do I enter my debts?
One per line, as a name followed by balance, APR and minimum payment, such as “Visa 6000, 24.9, 150”.
Should I stop saving to pay off debt?
Keep a small emergency fund and any employer retirement match, then put extra money toward high-interest debt.
Would consolidation help?
If you can get a much lower rate, possibly; the debt consolidation calculator compares the options.
Last reviewed October 2, 2026