Debt Snowball vs Avalanche Calculator
When you have several debts, the order you attack them in changes how fast — and how cheaply — you get free. This calculator runs both popular strategies, the snowball and the avalanche, on your actual balances and shows which one saves more.
How this calculator works
Both methods pay every debt’s minimum each month, then put all your spare cash toward one target debt. They differ only in which debt is the target:
- Avalanche targets the highest interest rate first. This mathematically minimizes total interest paid.
- Snowball targets the smallest balance first. You clear individual debts faster, which many people find more motivating.
The calculator simulates month by month: it accrues interest on each balance, applies every minimum payment, then funnels your extra payment (plus any freed-up minimums from cleared debts — the “snowball” effect) into the strategy’s target until everything is paid off.
Math vs motivation
Avalanche always wins on pure cost, but usually by a modest margin. If the quick wins of the snowball keep you committed to the plan, that psychological edge can be worth more than the interest difference. The best strategy is the one you’ll actually stick with.
Learn more
- Debt Snowball vs Avalanche: Which Payoff Method Wins? — Two proven ways to escape debt. One saves the most money; the other keeps you motivated. Here's how to choose — and why consistency beats both.
- Your Debt-Free Roadmap: A Step-by-Step Plan — A clear, ordered plan to get out of debt for good — from a starter safety net to choosing a payoff method to staying out once you're free.
- Budgeting 101: A Simple System That Actually Sticks — Budgets fail when they're complicated. Here's a simple, flexible system — the 50/30/20 framework, how to set it up, and how to keep it going.
Frequently asked questions
- What's the difference between snowball and avalanche?
- Avalanche pays off the highest-interest debt first to minimize total interest. Snowball pays off the smallest balance first for quick, motivating wins. Both pay minimums on everything else.
- Which one should I choose?
- If you're driven by numbers, avalanche saves the most money. If you need momentum to stay motivated, snowball's early wins may keep you on track. The interest gap between them is often small — consistency matters more.
- Does paying extra really make a big difference?
- Hugely. The extra payment is what accelerates either strategy. Increasing it shortens your debt-free date and slashes total interest under both methods — try raising the extra-payment field to see.