Both methods share the same engine: you pay the minimum on every debt, then throw every spare dollar at one target debt until it's gone. When it clears, its old payment rolls onto the next target — the "snowball" effect that both strategies actually use. The only difference is which debt you target first.
The avalanche method
Target the debt with the highest interest rate first, regardless of balance. Once it's gone, move to the next-highest rate. Because you're always killing your most expensive debt, the avalanche pays the least total interest and usually gets you out of debt the fastest.
The catch: if your highest-rate debt also has a big balance, it can take a while to see your first debt fully disappear — and for some people, that delayed gratification is where motivation leaks out.
The snowball method
Target the smallest balance first, regardless of rate. You knock out a whole debt quickly, feel the win, and carry that momentum to the next-smallest. Popularized by Dave Ramsey, the snowball trades a little extra interest for a lot of psychological fuel.
The catch: if your smallest debt happens to be low-interest, you're leaving a high-rate balance to keep growing while you celebrate. That's the cost of the motivation.
How big is the math gap, really?
Usually smaller than people fear. For typical consumer-debt mixes, the avalanche tends to save somewhere between a few dozen and a few hundred dollars versus the snowball — and occasionally they tie, when your highest-rate debt is also your smallest. The gap grows when you have a large, very-high-rate balance sitting next to small, low-rate ones.
See your exact gap
Enter your debts and budget. We'll show months-to-freedom and total interest for both methods, side by side.
How to choose
- Run the calculator first. If the avalanche saves you a trivial amount, take the snowball for the morale boost.
- If the gap is large (you have a big balance at a punishing rate), lean avalanche — that's real money.
- Be honest about your past. If you've started and quit payoff plans before, the snowball's early wins may be exactly the medicine you need.
- Hybrid is allowed. Knock out one tiny balance for the win, then switch to avalanche. There's no purity test.
The optimal payoff method is whichever one gets you to zero. A plan you abandon at 80% costs more than a "suboptimal" plan you finish.