- Enter the requested amounts and assumptions.
- Keep time periods and units consistent.
- Review the main result and the supporting comparisons.
- Change one input at a time to test alternatives.
Debt Avalanche Calculator
Model a debt avalanche that keeps minimums current while concentrating extra money on the highest-APR balance. Payments released by cleared debts accelerate the remaining balances.
Your inputs
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Result
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Estimated payoff time
Years to payoff—
Total interest—
Total amount paid—
Interest saved vs minimums—
Time saved vs minimums—
Monthly interest uses APR ÷ 12. After minimums, all available extra payment targets the active debt with the highest APR.
What the result means
The main result summarizes the calculation using the values currently shown above. Supporting figures expose the most useful tradeoffs instead of hiding them in one total.
Actual lender accrual, fees, and payment timing can change the payoff date.
With the default balances and $300 extra per month, the calculator compares total interest with a minimum-only baseline.
What should I enter in the Debt Avalanche Calculator?
Use figures from the same time period and keep every monetary amount in the same currency.
Does this tool include taxes?
No. Results are planning estimates before taxes unless an input explicitly accounts for them.
Can I use a currency other than dollars?
Yes. The arithmetic is currency-neutral; treat the dollar symbol as your chosen currency and stay consistent.
Why might my real result differ?
Actual lender accrual, fees, and payment timing can change the payoff date. Rounding and changing future inputs can also affect the outcome.
How often should I update the estimate?
Recalculate whenever a major input changes so the comparison remains useful.