This isn't a close call mathematically — but the research on which method people actually finish is more interesting than the math alone, and both facts matter for choosing correctly.

The Math and the Psychology

The avalanche method (paying minimums on everything, extra toward the highest-interest debt first) mathematically saves the most money, always — on a mix including 22-26% APR credit cards, avalanche over snowball can realistically save hundreds to over a thousand dollars depending on balances and timeline. But a published Journal of Marketing Research study found people are measurably more motivated by seeing individual accounts close (the snowball method's approach — smallest balance first) than by watching one large balance slowly shrink — a documented psychological effect, not just anecdotal encouragement.

The "best" method mathematically only wins if you actually finish the plan — a method you abandon halfway through saves you nothing. Be honest about which approach you're more likely to stick with; the interest savings from avalanche assume completion, which snowball's psychological wins may make more likely for some people.

The Disciplined, Numbers-Motivated Payer: Avalanche is the objectively better choice — maximum interest savings with no behavioral downside for someone who stays consistent regardless of visible progress.

Someone Who's Struggled to Stick With Debt Payoff Before: Snowball's quick wins (closing small accounts) are a research-backed way to build momentum — the modest extra interest cost may be worth it if it's the difference between finishing and giving up.

Pick the Method You'll Actually Finish

  1. List all debts with balances and interest rates.
  2. Be honest about your own track record with long, numbers-driven goals versus ones with visible milestones.
  3. Choose avalanche for maximum savings, or snowball for motivation — either beats not having a plan at all.

See debt consolidation explained for a third approach that can complement either method.