Debt Snowball Calculator (USA)
Build a payoff plan using the Snowball method (smallest balance first) or Avalanche (highest APR first). Get a payoff timeline, total interest estimate, and clear charts — mobile-first.
Inputs
Results
| Debt summary | Payoff |
|---|---|
| Run Calculate to see results. | — |
| Month | Payment |
|---|---|
| — | — |
This is a planning estimate. Actual payoff can change with statement timing, compounding rules, fees, and minimum-payment policies.
Visual
How to use
- Pick a strategy: Snowball (smallest balance first) or Avalanche (highest APR first).
- Enter each debt: balance, APR, and minimum payment (use statement minimum for planning).
- Add an optional extra monthly payment to accelerate payoff.
- Click Calculate, review payoff time, total interest, and charts. Adjust until it matches your budget.
Debt snowball vs avalanche: what’s the difference?
A debt payoff strategy is simply a structured way to decide which debt gets your extra payment each month. In both the Snowball and Avalanche methods, you keep paying the minimum on every debt to avoid late fees and credit damage. The difference is where you focus the extra money after minimums are covered.
The Snowball method targets the smallest balance first. When that debt is paid off, you roll its minimum payment into the next debt. This creates a “snowball” effect: your available payment grows as you eliminate accounts. Many people like snowball because the quick wins can improve motivation and consistency.
The Avalanche method targets the highest APR first. Over time, this typically minimizes interest paid and can be the mathematically fastest path (for the same monthly budget). It can feel slower at the beginning if your highest-rate debt has a large balance, but it often saves more interest in the long run.
This calculator estimates payoff month-by-month using your balances, APRs, and minimum payments, then applies your extra monthly payment to a single target debt according to the chosen strategy. Results are estimates because real-world debt often includes statement cutoffs, variable minimum formulas, promotional rates, and fees. Use it for planning and comparison.