Debt Snowball vs Avalanche: Which Method Gets You Out of Debt Faster?

You have extra money each month and you want to get out of debt. Two strategies dominate: the debt snowball, where you pay off the smallest balance first for quick psychological wins, and the debt avalanche, where you pay the highest interest rate first to minimize total interest paid. Financial advisors argue about which is "better" — but the honest answer is that it depends on your specific debts, interest rates, and motivation style. The math strongly favors the avalanche method for most people. By targeting high-interest debt first, you reduce the amount of interest accruing across all accounts simultaneously. For someone with $40,000 in mixed credit card and loan debt, the avalanche method typically saves $2,000–$8,000 in interest compared to the snowball — sometimes more if the interest rate spread is large. But the psychology argument for the snowball is real and data-backed. Research from the Kellogg School of Management found that people who paid off small balances first were significantly more likely to eliminate all their debt than those who optimized mathematically. A strategy you stick with beats a strategy you abandon. This calculator runs both methods against your exact debt list with the extra monthly payment you specify — computing month-by-month payoff schedules, total interest for each method, the dollar difference, and the break-even point where you would have to abandon the avalanche for the snowball to have been worth it. It also models a hybrid approach and lets you see what happens if you increase your extra payment by $50, $100, or $200.