Free Family Debt Payoff calculator with clear step-by-step results.
Simulates the avalanche method month by month, directing the whole available payment at the highest-rate balance first and rolling it onto the next debt as each clears. Interest is compounded before payment each month, which is how card issuers actually apply it.
Monthly interest
Interest = balance x APR / 12, applied before the payment
Payment order
The full payment goes to the highest-rate balance until it clears, then to the next
A simplified projection. Real cards apply minimum payments, promotional rates, fees and different interest calculation methods. Confirm figures with your lender before restructuring repayments.
Mathematically yes - targeting the highest rate always costs less interest. Snowball clears small balances first and can be better if the psychological wins keep you going.
If the payment is smaller than the monthly interest, the balance never falls. The cap flags that case rather than looping forever - you need a higher payment or a lower rate.