If you're juggling three or four credit card balances, you've probably seen both names tossed around online.
The snowball method says pay off your smallest balance first.
The avalanche method says attack the highest interest rate first.
Both work, but they work differently — and the one you pick can cost or save you hundreds of dollars.
You throw every extra dollar at the balance charging you the highest APR, usually a store card or a card you opened years ago at 26% or higher.
Once that's gone, you move to the next highest rate.
Because interest compounds against you daily, killing the priciest debt first shrinks what you owe faster.
A Federal Reserve survey found roughly half of Americans carrying credit card debt don't pay their balance in full each month, so those APRs are very real money.
You ignore interest rates and pay off the smallest balance first, regardless of what it charges.
The reason is behavioral, not mathematical.
Researchers who studied real borrowers found that people who knocked out a small account early were more likely to keep going and eventually clear their whole debt load.
That first "zero balance" screen does something a spreadsheet can't.
If you're disciplined and your highest-rate debt isn't dramatically bigger, avalanche usually saves more — sometimes a few hundred dollars over a year or two.
If you've started and quit payoff plans before, or you need momentum more than optimization, snowball tends to keep people in the game.
The gap between the two methods is often smaller than the gap between "finished the plan" and "gave up in month three." There's a third move that beats both: ask for a lower rate.
Call your card issuer, mention you've been a customer in good standing, and ask if they'll reduce your APR.
A 2024 LendingTree analysis found a large share of cardholders who asked got some kind of relief, whether a rate cut, a waived fee, or a hardship program.
Even a few points off changes the math in your favor.
Whatever order you choose, the boring rules matter more than the label.
Pay at least the minimum on every account so you don't wreck your credit score.
Automate the payments so you can't forget.
Put any windfall — a tax refund, a bonus, a birthday check — straight onto the target balance instead of letting it evaporate into groceries.
And check your statements for subscriptions you forgot about; a few canceled streaming services can fund the extra payment that makes either method actually work.
One more thing worth knowing: balance transfer cards can pause interest for 12 to 21 months, but they usually charge a 3% to 5% fee and the rate jumps when the promo ends.
Run the numbers before you move debt around.
If you can't clear the balance inside the promotional window, you may just be rearranging the problem.
The honest takeaway is that both methods are fine, and neither is magic.
Avalanche is the smarter math; snowball is the better pep talk.
Pick the one you'll actually stick with, then attack it every single month.
Final Thoughts
The best debt payoff plan isn't the cleverest one — it's the one you don't quit.