Debt Snowball vs Avalanche Engine
Compare payoff schedules. Snowball: smallest balance first. Avalanche: highest interest first.
The debt snowball method pays off debts from smallest to largest balance, creating quick wins. The avalanche method targets the highest-interest debt first, minimizing total interest paid. Both work—snowball often wins on motivation, avalanche on math. This calculator lets you enter multiple debts and see side-by-side payoff schedules, total interest, and months to debt-free. Use industry presets for common scenarios or enter your own balances and APRs.
Debts (add up to 5)
Enter name, balance, APR %, and minimum payment for each debt
Amount you can add beyond minimums each month
Comparison
Snowball: — months, — interest
Avalanche: — months, — interest
Savings with Avalanche: —
Payoff Timeline (Balance Over Time)
Insights
Formula
// Snowball: pay minimums, put extra toward smallest balance // Avalanche: pay minimums, put extra toward highest APR // Monthly interest = balance * (APR/12) // New balance = balance + interest - payment
Input Definitions
What does each input mean?
- Debts (Name, Balance, APR %, Min $)
- For each debt: a label, current balance owed, annual percentage rate, and minimum monthly payment. Add up to 5 debts.
- Extra monthly payment
- Amount you can add beyond minimums each month. This extra goes toward one debt at a time—snowball targets smallest balance first, avalanche targets highest APR first.
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Choosing the Right Debt Payoff Strategy for Your Situation
The debt snowball method (smallest balance first) and the debt avalanche method (highest interest rate first) both eliminate debt — but they differ in cost, speed, and psychological momentum. The avalanche saves more money mathematically, but the snowball often works better in practice because of the motivation from early wins. This calculator runs both scenarios side by side so you can see the real difference for your specific debts.
Use this when you’re creating a debt payoff plan and want data to support your decision, when you’re trying to figure out how many months until you’re debt-free, or when you want to show a partner or financial advisor the numbers before committing to a strategy. Most people are surprised to find that the two methods often differ by less than they expect — or more.