Avalanche vs. Snowball: Which Payoff Method Fits You?

By PDC Editorial Team · Published August 8, 2026 · Last reviewed August 8, 2026 · 2 min read

The avalanche and snowball methods are two ways of deciding where your extra money goes once every minimum payment has been made. Avalanche sends every spare dollar to the debt with the highest APR, then moves to the next highest. Snowball sends every spare dollar to the smallest balance regardless of rate, then rolls that freed-up payment into the next smallest. Both assume you keep paying at least the minimum on everything else.

The mathematical difference

Interest accrues on balances at their own rates, so attacking the highest rate first removes the most expensive interest soonest. Avalanche therefore costs less in total interest and usually finishes slightly sooner, assuming you contribute the same amount either way.

A worked example

Say you have three debts: $2,000 at 29%, $1,000 at 22%, and $400 at 18%, and $150 a month above the minimums. Avalanche sends the $150 to the 29% balance first, because each dollar there prevents the most interest. Snowball sends it to the $400 balance, clearing one account in about three months. Avalanche saves more money; snowball clears an account faster and frees up that account's minimum sooner.

Why the snowball method persists

The reason is behavioural rather than mathematical. Paying off an entire account is visible, it reduces the number of due dates you track, and for many people that early result is what keeps the plan alive through months eight and nine. A method you abandon does not save anything, so the comparison is not purely about interest.

A hybrid is also reasonable: clear one very small balance first for the psychological benefit, then switch to strict avalanche ordering for everything that remains. Nothing about either method requires purity.

When neither method is the right first step

• You are behind on payments.
• You have no money above the minimums at all.
• A large share of your debt carries a penalty rate a lender may reduce on request.

In those cases the first step is usually a conversation with the creditor or a nonprofit credit counsellor, not a payoff-ordering decision.

What to do next

List every unsecured debt with its balance, APR and minimum payment. Order the list twice — once by rate, once by balance. Decide which ordering you will actually stick to for the next six months, and put the plan somewhere you will see it.