Debt Avalanche vs. Snowball: Which Payoff Method Is Better?

The avalanche method (highest interest rate first) costs the least interest. The snowball method (smallest balance first) pays off whole accounts sooner. With an $8,000 card at 22% and a $2,000 loan at 8%, plus $300 extra a month, avalanche costs $1,943.92 in interest and snowball $2,327.38, a difference of $383.46.

How Each Method Works

Both methods pay the minimum on every debt each month and send all extra money to one target debt. When that debt is paid off, its minimum payment joins the extra money and moves on to the next target. The total you pay each month stays the same until everything is gone.

The Consumer Financial Protection Bureau describes both and frames the choice the same way: the highest-rate method saves the most money, while the snowball shows progress faster but may cost more.

Worked Example

Snowball costs $383.46 more and takes one extra month. In return, the first account closes in month 6 instead of month 22. The gap is large here because the biggest balance also has the highest rate. When the smallest debt also has the highest rate, the two methods pick the same order and cost the same.

A Second Example: Three Debts

The gap shrinks when rates and balances are more mixed. Take a $6,000 card at 24% ($180 minimum), a $1,500 card at 19% ($45 minimum) and a $9,000 car loan at 7% ($280 minimum), with $250 extra a month, for $755 in total.

Here snowball costs $96.98 more over about two years. The small card has a fairly high rate, so paying it first is not much of a detour.

What the Research Says About Motivation

A 2012 study in the Journal of Marketing Research by David Gal and Blakeley McShane used data from a debt settlement firm. It found that closing individual accounts predicted whether people went on to eliminate their debt, regardless of the dollar size of the closed accounts. The authors suggest that finishing smaller tasks may help people keep going.

That is the case for the snowball. It is evidence about staying with a plan, not about interest. If you have quit payoff plans before because nothing seemed to change, an early closed account can be worth a few hundred dollars.

How to Choose

• Wide rate gap (a 22% card next to an 8% loan): avalanche saves real money. Use it if you trust yourself to wait for the first payoff.
• Rates close together: the cost difference is small, so pick the order that keeps you paying.
• Hybrid: clear one very small balance first for a quick win, then switch to highest rate first.

Either method beats paying only minimums. Stopping new charges on the cards matters more than which order you pick.

Making Either Method Work

• Automate the minimums. Set autopay for every minimum so a missed payment never adds late fees or a penalty rate.
• Keep the total payment fixed. When a debt is paid off, move its full payment to the next target instead of spending it. This rollover is what makes both methods work.
• Keep a small cash cushion. Without one, the next car repair goes back on a card and undoes months of progress.
• Ask for a lower rate. Card issuers sometimes agree to lower the rate for customers who ask. Any cut helps under either method.
• Track it. Updating balances once a month shows progress even before an account closes.

What This Doesn't Cover

The example holds rates and minimum payments fixed and assumes no new charges. It does not cover 0% balance transfers, consolidation loans, student loan programs or variable rates that change during payoff. If minimum payments are already hard to make, a nonprofit credit counselor can review your options; our debt consolidation guide covers the loan route.

Sources: CFPB, Resolve to take control of your debt; Gal and McShane, "Can Small Victories Help Win the War?" Journal of Marketing Research, 2012.