Debt Payoff Calculator

The snowball method pays off the smallest balance first, then rolls that payment into the next smallest. The avalanche method targets the highest interest rate first. Both pay minimums on every other debt.

The avalanche method almost always costs less interest because it kills your most expensive debt first. The snowball can match it only when your smallest balance also has the highest rate.

Behavior. Clearing a whole debt quickly gives a motivating win and frees up a payment, which helps many people stay consistent. The best plan is the one you actually finish.

A lot. Every extra dollar goes straight to principal on your target debt, so even a small fixed extra amount each month can cut months off the schedule and save meaningful interest.

Then the balance grows instead of shrinking and the debt is never repaid. The calculator detects this and flags it so you know you need a larger payment.

No. The calculation runs entirely in your browser. Your balances and rates are never uploaded or stored.