Debt snowball vs avalanche: which one actually gets paid off?

The avalanche method costs you less in interest, and the snowball method is easier to stick with. In the worked example below, the entire difference between them was $161.25 and one month — about $5.20 a month — which is why the honest answer is "pick the one you'll actually finish."

Last updated: August 2026

What is the debt snowball?

You pay the minimum on everything, then throw every spare dollar at the smallest balance regardless of its interest rate. When that debt is gone, its payment rolls into the next-smallest, and the amount you're attacking with grows each time — the snowball.

The appeal is that debts disappear. You get an actual finish line early, and then another one, and the account stops showing up on your statements.

What is the debt avalanche?

Same setup — minimums on everything — but the spare dollars go to the highest interest rate first, whatever the balance. When it's gone, that payment rolls to the next-highest rate.

The appeal is arithmetic. Interest accrues on rate, not on size, so killing the most expensive rate first means less total interest.

Which one is actually cheaper?

Avalanche, essentially always, as long as you keep the total monthly payment the same. The real question is by how much — and that depends on the spread between your rates and the sizes of the balances carrying them.

Here's one worked example. Four debts, $12,700 total, minimums of $420 a month, plus an extra $150 a month:

• —Store card: $1,200 at 22.9%, minimum $35
• —Credit card: $3,100 at 19.9%, minimum $80
• —Personal loan: $2,000 at 12.5%, minimum $95
• —Car loan: $6,400 at 8.9%, minimum $210

Notice that both methods start in the same place. The store card is both the smallest balance and the highest rate, so the first move is identical either way. That happens more often than the debate suggests — small store and retail cards frequently carry the highest rates.

$161.25 spread over 31 months is about $5.20 a month. That's the whole argument. It's real money and we're not pretending otherwise, but it is not the difference between paying this off and not paying this off.

These are example figures to show the shape of the maths, not a projection of your situation. Your rates, minimums and extra payment will produce different numbers, and minimum payments on real credit cards usually shrink as the balance falls, which this example holds flat for simplicity.

So why would anyone choose the snowball?

Because the plan you abandon in month four costs you far more than $161.25.

The gap between the two methods is small. The gap between "kept going for 31 months" and "stopped in March" is enormous. If watching a debt hit zero in month three is what keeps you making the extra payment, the snowball's momentum is worth more to you than the avalanche's arithmetic. If you find spreadsheets satisfying and the rate column is what motivates you, run the avalanche and keep the $161.25.

Neither answer is a character flaw. Both are just information about how you're built.

What actually decides it

Whether you log.

This is the pattern behind why most budgets die by March: the plan is never the problem. People build immaculate payoff schedules — colour-coded, projected out three years, every scenario modelled — and then the Actuals column stays empty and the schedule quietly becomes fiction. A payoff plan you don't update is a drawing of a payoff plan.

Ten seconds. One line. The payment you just made, the date, the balance now. That's the habit that pays off debt. The method you picked is a rounding error next to it.

Not sure where to start? The Honest Starter Budget is free, and it takes about one ad break to fill in. No card, no upsell sequence. Get it at honestbudget.shop.

Do you have to build the tracker yourself?

You can. Both methods are a payment waterfall and a running balance, and a competent spreadsheet person can build one in an evening.

The honest caveat: an evening is exactly how the beautiful abandoned spreadsheet gets born. The build is the fun part. The logging is the part that decides whether the thing works, and by the time you get to it you've already spent your enthusiasm on conditional formatting. If you enjoy building, build it — we mean that, and we've written about the free options worth using.

If you'd rather skip to the logging, the Debt Payoff Tracker is $9. You enter your balances, rates and minimums once, choose snowball or avalanche, and it shows the order, the running balances, and the payoff month. Switch methods and it recalculates. It does not tell you which to pick.

Where to go from here

Pick a method today — either one, genuinely — and log your first payment in ten seconds. Then celebrate (cheaply) when the first balance hits zero. A $6 coffee for clearing a $1,200 card is a good trade.

The Debt Payoff Tracker is $9, and it's in the Everything Bundle at $27 alongside the budget spreadsheet and the savings challenge pack. If you want the sinking funds and net worth tabs as well, Everything Complete is $37.

HonestBudget sells organisational tools. We don't provide financial advice and we don't promise outcomes.