Debt Avalanche vs. Debt Snowball: Which Should You Use?
If you have several debts (a couple of credit cards, a car loan, a personal loan), the hardest question is often where to send any extra money. Two strategies dominate: the avalanche and the snowball.
Both start the same way: make the minimum payment on every debt, every month. The difference is where the extra goes.
The avalanche: highest interest rate first
Put every extra dollar toward the debt with the highest interest rate. When it's paid off, move to the next-highest rate.
Why: high-rate debt costs the most to carry. Paying it first means you pay the least interest overall, and usually finish soonest.
The catch: if your highest-rate debt also has a big balance, it can take a long time before you see one disappear.
The snowball: smallest balance first
Put every extra dollar toward the debt with the smallest balance. When it's gone, roll its payment into the next-smallest.
Why: quick wins. Clearing a whole debt in a few months is motivating, and every payoff frees up a payment to throw at the next one. That's the "snowball."
The catch: you'll usually pay more interest than with the avalanche, sometimes much more.
An example
Three debts, $300 a month to put toward them:
| Debt | Balance | Rate | Minimum |
|---|---|---|---|
| Store card | $800 | 26% | $30 |
| Credit card | $5,000 | 22% | $120 |
| Car loan | $9,000 | 7% | $150 |
- Avalanche order: store card (26%), credit card (22%), car loan (7%). Here the highest rate is also the smallest balance, so both methods start in the same place.
- Snowball order: store card ($800), credit card ($5,000), car loan ($9,000).
In this case the two orders are the same. When they differ, for example a $3,000 card at 28% and a $600 card at 18%, the avalanche saves money and the snowball delivers the first win sooner.
Which should you use?
- Choose the avalanche if you're motivated by numbers and will stick with a plan even without quick wins.
- Choose the snowball if you've started and stopped debt plans before. A plan you finish beats a perfect plan you abandon.
- Or mix them: clear one or two tiny balances first for momentum, then switch to the highest rate.
Whichever you choose
- Stop adding to the debts you're paying off.
- Automate the minimums so nothing is ever late.
- Send windfalls (tax refunds, three-paycheck months, overtime) straight to your target debt.
IncomeSync's debt planning compares strategies on your real balances and rates, showing payoff dates and total interest for each, and how much an extra or one-time payment changes them.