Debt Snowball vs Debt Avalanche
Published · Updated
Two ways to order extra repayments: smallest balance first, or highest interest first. How each works in Australia, and how to choose without turning it into a personality test.
Snowball and avalanche are just rules for where leftover money goes after you have paid essentials and minimums. Snowball clears the smallest balance first. Avalanche targets the highest interest rate first. Neither works if there is no leftover, and neither replaces hardship when the minimums themselves do not fit.
How the snowball works
List debts from smallest balance to largest (ignore the rate for the targeting decision). Keep every other minimum current. Throw all extra at the smallest. When it is gone, that minimum joins the extra pile on the next-smallest. The win is speed-to-cleared-account. Useful if you have abandoned plans before.
How the avalanche works
List by interest rate, highest first. Same minimums everywhere else. Extra goes to the dearest debt. You usually pay less interest over the life of the mix. The first cleared account may take longer, which is why some people quit.
A simple comparison
| Snowball | Avalanche | |
|---|---|---|
| Target | Smallest balance | Highest interest rate |
| Main benefit | Early cleared accounts | Less interest over time |
| Main cost | You may pay more interest | Slower first “win” |
| Fits people who | Need proof the plan is moving | Can stick to a quieter plan |
| Does not fix | A budget that cannot cover minimums | A budget that cannot cover minimums |
Illustrative mix: $800 BNPL at 0% remaining, $3,200 card at 21%, $9,000 personal loan at 11%. Snowball knocks over BNPL first and frees that instalment. Avalanche hits the card first and usually saves more interest if you stay the course. Your mix will differ. Run both on paper for a year. How to build a debt repayment plan is the worksheet version.
Hybrid, without the branding
Plenty of people clear a tiny BNPL because it is gone in six weeks, then switch to the highest-rate card. That is fine. Write the exception down so you do not invent a new exception every payday. The enemy is reshuffling, not picking the “wrong” famous method.
If you are considering consolidation instead of an order-of-attack, test total cost first. A new loan is not a method. It is a different structure.
Common questions
Which method do Australian regulators recommend?
They do not pick a branded method for you. Moneysmart focuses on listing debts, budgeting, and comparing options. The maths of avalanche is usually cheaper. The psychology of snowball is why some people finish.
Should I include my home loan in the snowball?
An existing home loan is a large, long, usually cheaper debt. Treating it as the “big snowball last” is common. Putting extra onto a 21% card before extra onto a home loan is often the cheaper money decision. This is general information, not advice for your loan.
Not sure where to start? Talk to our team about your situation. Talk to us
This article is general information only. It is not financial, credit, legal or personal advice. Your circumstances matter, and outcomes are not guaranteed. Free help is also available through the National Debt Helpline (1800 007 007) and Moneysmart.