Two debt payoff methods dominate every personal finance conversation, and they disagree on the single most important question: which balance do you attack first?
The debt snowball says start with your smallest balance, no matter the interest rate.
The debt avalanche says start with the highest interest rate, no matter the size.
The other one might be the reason you actually finish.
Say you owe $600 on a store card at 26% APR, $3,200 on a credit card at 22%, and $9,000 on a personal loan at 11%.
You have $400 a month to throw at debt beyond minimums.
The avalanche sends that $400 to the store card first because it costs you the most per dollar.
The snowball sends it there too, but only because it's the smallest.
Your first payoff arrives in roughly two months either way.
Once the store card is gone, avalanche moves to the 22% card, then the 11% loan.
Snowball knocks out the $3,200 card next, then the loan.
Run the numbers and avalanche usually saves a few hundred dollars and shaves a month or two off the timeline.
On large balances with wildly different rates, the gap can stretch past $1,000.
So why does snowball win so often in practice?
Because debt payoff is a behavior problem wearing a math costume.
A 2022 study in the Journal of Consumer Research found that people who closed accounts one at a time — even small ones — were more likely to keep going and eventually clear all their balances.
Every closed account is proof you're making progress, and progress is what keeps you from quitting in month seven.
Send extra money to the highest-rate debt, but if a tiny balance is sitting there mocking you, kill it first for the psychological win, then switch to pure avalanche mode.
Federal Reserve data shows the average American carries roughly $6,500 in credit card debt, and at current rates near 21%, that balance costs about $115 a month in interest alone.
Three moves matter more than which method you pick.
First, stop adding new debt — a payoff plan on a leaking boat is just bailing.
Second, call every issuer and ask for a rate reduction; it takes ten minutes and sometimes works.
Third, automate the payment so willpower never enters the equation.
If you're wired for spreadsheets and slow burns, avalanche is your path to the cheapest exit.
If you've started and quit five times, snowball's quick wins are worth the extra interest.
Final Thoughts
Either way, the person who pays $400 a month beats the person who spends three weekends comparing calculators.