Debt payoff planner (avalanche vs. snowball)
Build a plan to clear your debts — and compare two proven strategies.
Your debts
List what you owe. Add every balance — the plan works across all of them at once.
Avalanche · highest rate first
$1,840.51 total interest
Snowball · smallest balance first
$1,840.51 total interest
Avalanche saves you
in interest
| Strategy | Debt-free in | Total interest |
|---|---|---|
| Avalanche (highest rate first) | 31 mo | $1,840.51 |
| Snowball (smallest balance first) | 31 mo | $1,840.51 |
How this is calculated
We simulate your debts month by month. Each month every balance accrues interest (balance × APR ÷ 12), every debt gets its minimum payment, and your extrapayment is thrown at one target debt. When a debt clears, its freed-up minimum rolls into the next target — that’s the “snowball” effect that speeds things up over time.
Avalanche targets the highest APR first, so you pay the least interest overall. Snowball targets the smallest balance first, so you clear whole debts sooner — great for momentum. If a minimum is smaller than the monthly interest and gets no extra, that balance never shrinks; we flag that instead of running forever.
Runs entirely in your browser — nothing you enter is sent anywhere.