The debt snowball and debt avalanche are the two most popular debt payoff strategies. People debate them endlessly — and both sides have a point. Here's an honest look at how they differ, when each one wins, and how to pick the one that's actually right for you.
In both methods, you make minimum payments on all other debts and put every extra dollar toward your target debt. When that debt is paid off, you roll those payments to the next target.
The avalanche saves more money. Always. It's not even close mathematically — by targeting the highest-interest debt first, you stop the most expensive interest from compounding. Depending on your debt mix, the avalanche can save hundreds to several thousand dollars compared to the snowball.
So why doesn't everyone use it?
The snowball was popularized because it works with human psychology, not against it. When you pay off a small debt completely — even if it had a low interest rate — you get a concrete win. One fewer payment. One fewer thing to worry about. That feeling is real, and for many people, it's what keeps them going.
Research on behavior consistently shows that people who have early wins are more likely to stick with a plan long-term. If the mathematically "optimal" strategy causes you to quit after six months, it wasn't actually optimal for you.
Some people start with the snowball to build momentum — knocking out one or two small debts — then switch to the avalanche once they're in the habit. This isn't textbook, but it works. The most important thing is that you're directing extra money toward debt at all.
PayoffPath lets you switch between Avalanche and Snowball instantly. You can see your projected debt-free date and total interest for each strategy side-by-side and decide for yourself which one feels right. You can also switch anytime — your progress carries over.
Add your debts and toggle between Avalanche and Snowball to see exactly how they compare for your situation.
Try it yourself →