Calculator
Snowball vs.
Avalanche
Enter your debts below and see exactly how each strategy plays out — month by month — so you can choose the method that fits your goals.
Amount above minimums you can put toward debt each month.
Enter at least one debt with a balance and minimum payment to see results.
Snowball vs. Avalanche: which strategy is right for you?
The Debt Snowball Method
The snowball method directs all extra payments toward your smallest balance first, regardless of interest rate. Once that debt is eliminated, you roll its freed-up minimum payment into the next smallest balance — creating a growing "snowball" of payment power.
Research from Northwestern University's Kellogg School of Management found that focusing on eliminating individual accounts (rather than reducing total debt) increases follow-through. The quick wins trigger a psychological reward loop that keeps you on track for the long haul. If motivation is your biggest challenge, snowball is often the more effective choice — even if it costs a little more in interest.
The Debt Avalanche Method
The avalanche method targets your highest APR debt first, minimizing the total interest that accrues while you pay. Extra funds are concentrated on the most expensive debt until it's gone, then shifted to the next highest rate.
The CFPB recommends the avalanche approach for borrowers who want to minimize total interest paid. It is mathematically optimal — you will always pay less interest with avalanche than snowball when your debt mix has varying rates. The trade-off: the first payoff can take longer if your highest-rate debt also has a large balance, which requires sustained discipline before you see a debt disappear.
How to choose — and what the research actually says
The "best" strategy is the one you will actually stick with. The interest savings between snowball and avalanche are often a few hundred to a few thousand dollars over the full payoff period — meaningful, but smaller than the cost of abandoning the plan entirely. NBER research shows most consumers don't allocate payments optimally, meaning any consistent strategy beats the default of paying minimum-only.
A practical rule: if your highest-APR debt is also your smallest balance, both methods will produce nearly identical timelines and you can pick either. If your highest-rate debt has a large balance, consider whether you have the patience to wait for that first payoff — if not, snowball's early wins may keep you more engaged.
Both strategies assume a fixed extra payment each month. In reality, income changes, unexpected expenses arise, and windfalls occasionally appear. That's where adaptive tools like Toya become valuable — they recalculate the optimal allocation automatically whenever your situation changes, so you're always on the fastest path without any manual re-planning.