Debt payoff
calculator.
Compare avalanche vs snowball vs investing your extra payments. Find the break-even APRAnnual Percentage Rate (APR)The yearly cost of borrowing money, shown as a percentage.Full definition where paying debt beats investing, and see 10-year net worthnet worthEverything you own (assets) minus everything you owe (debts). The most comprehensive measure of financial health.Full definition projections for each strategy.
Debts above 7–8% APR always get paid first. Below that, investing wins mathematically, but the psychological benefit of being debt-free is real. Pick the strategy you will actually stick with.
What this tool assumes
- Interest accrues monthly at the APR divided by 12.
- Minimum payment is assumed fixed (not a recalculated percentage).
- Avalanche orders by highest APR first; snowball orders by smallest balance first.
- All three scenarios spend the same total each month: once a debt is paid off, its minimum payment rolls into the next debt (or into investing).
- Extra payments split proportionally across debts only in custom mode.
Projections are hypothetical. Not financial advice.
HOW THIS IS CALCULATED
This tool runs entirely in your browser — no data is sent to any server. All formulas use standard financial math. Verify the methodology or inspect the source code in your browser's dev tools.