Avalanche vs Snowball: See Exactly When You Will Be Debt-Free

The avalanche method directs any extra payment beyond minimums to the debt with the highest interest rate first. Once that debt is paid off, you roll its payment to the next highest-rate debt. Mathematically, this method always minimizes total interest paid and reduces your payoff timeline compared to snowball — assuming you have consistent extra payment capacity.

The snowball method targets the lowest balance first regardless of rate. Each debt paid off provides a psychological win and frees up a minimum payment that gets added to the next target. Research by behavioral economists suggests many people are more likely to follow through with snowball because of these early victories, even though it typically costs more in interest than avalanche.

If you are motivated by numbers and will stay disciplined regardless of interim progress, avalanche saves more money. If early wins help you maintain momentum and you have struggled to stick with debt plans before, snowball may lead to better real-world results despite the extra interest cost. The best strategy is the one you will execute consistently. Run both scenarios in PayoffPath to see the exact difference for your situation.

Enter $0 as your extra payment. The calculator will still show your payoff timeline using minimums only — often a sobering look at how long minimum-only payments take and how much interest accumulates. Even adding $25–50 per month can meaningfully shorten your payoff timeline on high-rate debt.