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Debt Payoff Calculator

Compare the avalanche and snowball debt payoff methods. See exactly when you will be debt-free and how much interest you save with each strategy. Free debt payoff calculator — no signup required.

Your Debts
Payoff Time
3y 9mo
Total Interest
$2,703.83
Total Debt
$17,000.00
Avalanche Saves
$0.00
Method Comparison
AvalancheSnowball
Payoff Time3y 9mo3y 9mo
Total Interest$2,703.83$2,703.83
Interest Saved vs Snowball$0.00

How to use this calculator

  1. Enter each of your debts — name, current balance, interest rate, and minimum payment
  2. Add any extra amount you can pay each month above the minimums
  3. Toggle between Avalanche and Snowball to see the difference
  4. Compare payoff dates and total interest to choose your strategy

Avalanche vs Snowball: Which is better?

The avalanche method targets your highest-interest debt first. Mathematically, this saves the most money in total interest paid and gets you debt-free faster. If you have a credit card at 20% and a student loan at 6%, the avalanche method attacks the credit card first while paying minimums on everything else.

The snowball method targets your smallest balance first, regardless of interest rate. It creates psychological wins faster — you eliminate debts completely sooner, which builds momentum. Research shows snowball adherents often pay off more debt overall because the motivation keeps them going.

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Track your debt payoff automatically
FlowFund's Debts module tracks your payoff progress, shows your avalanche/snowball schedule, and updates your net worth as you pay down debt.
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