Debt Snowball vs Debt Avalanche: Which Should You Use?
Both methods get you out of debt. The avalanche (highest interest rate first) always costs the same or less in interest. The snowball (smallest balance first) gives you quicker wins, and for a lot of people, those wins are what keeps them going. If the numbers are close for your debts, pick the snowball. If the avalanche saves real money, it's worth the patience.
That's the summary. The rest of this post shows you how to tell which situation you're in.
How both methods work
The mechanics are identical except for one choice:
- List every debt with its balance, interest rate and minimum payment.
- Pay the minimum on all of them, every month, no exceptions.
- Put every spare dollar on one "target" debt.
- When the target is paid off, add its old payment to the next target. Your attack grows each time a debt disappears.
The snowball chooses targets by smallest balance. The avalanche chooses by highest APR. That's it.
A worked example
Here's a fairly typical mix, with $605 of minimum payments and $200 a month extra:
| Debt | Balance | APR | Minimum |
|---|---|---|---|
| Store card | $900 | 29.9% | $35 |
| Car loan | $3,100 | 6.9% | $190 |
| Personal loan | $5,500 | 11.5% | $180 |
| Credit card | $7,800 | 26.9% | $200 |
Both plans clear the store card first, because it happens to be the smallest and the most expensive. After that they split.
- Snowball goes for the car loan next (gone in month 10), then the personal loan, and leaves the 26.9% credit card until last. Debt-free in 2 years 4 months, paying about $4,640 in interest.
- Avalanche goes straight for the 26.9% credit card. Debt-free in 2 years 3 months, paying about $3,940 in interest.
So the avalanche saves roughly $700 and a month here. Meaningful, but not life-changing. And the snowball person got the satisfaction of wiping out the car loan in month 10, while the avalanche person was still grinding down a big card balance.
Now compare both with just paying minimums: nearly 8 years and about $12,700 in interest. The method matters far less than having a method. Try your own debts in the debt payoff calculator, which runs both plans side by side.
When the avalanche clearly wins
The gap gets big when your largest balance also has your highest rate. Think a $12,000 credit card at 27% sitting alongside a few small, cheap debts like a 0% phone plan or a low-rate student loan. The snowball would spend months clearing the small cheap stuff while the expensive card keeps piling on interest. In that situation the avalanche can save thousands.
When the snowball makes more sense
If the rates are similar, the savings from the avalanche are small, and the psychological boost of closing accounts is worth more. Research backs this up. Studies of real people paying down debt, including work published by Northwestern's Kellogg School and in Harvard Business Review, found that people who focused on paying off individual accounts were more likely to get out of debt, probably because visible progress keeps motivation up.
It also helps if cash flow is tight. Clearing a small debt frees up its minimum payment, giving you breathing room sooner.
A hybrid that works for plenty of people
Nothing says you have to be a purist. A popular compromise: knock out one or two tiny balances first for the quick win, then switch to avalanche order for the rest. You get early momentum and most of the interest savings.
Before you start either one
- Keep a small cushion. Even $1,000 in savings stops a car repair from landing back on a credit card. See should I pay off debt or save first?
- Check for a cheaper deal. A 0% balance transfer or a lower-rate consolidation loan can beat both methods if the fees are sensible.
- Stop adding new debt. Neither method works if the balances keep refilling.
Pick one, write down your payoff order, and automate as much as you can. Month 14 is where most plans succeed or fail, and the best method is simply the one you're still following then.
Frequently asked questions
Which is better, debt snowball or debt avalanche?
The avalanche always saves the same or more interest. The snowball gives faster early wins, which helps many people stick with it. If the interest difference is small, the snowball is a fine choice.
How much does the debt avalanche save?
It depends on your debts. In our example with four debts totalling $17,300, it saved about $700 and one month compared with the snowball.
Can I combine the snowball and avalanche methods?
Yes. Many people clear one or two very small balances first for motivation, then switch to highest-interest-first for the rest.
Should I include my mortgage?
Usually not. Most people clear high-interest consumer debt first, then decide separately whether to overpay the mortgage.