Debt Snowball vs Avalanche: Which Pays Off Debt Faster in Australia?
If you've got a credit card, a car loan, a Buy Now Pay Later balance and maybe a personal loan all at once, the hardest part isn't paying. It's deciding which one gets the extra money. The two best-known answers are the debt snowball and the debt avalanche. Both work. They just reward different things.
The rules both methods share
- Pay the minimum on every debt, every time. Missing a minimum costs fees and can hurt your credit report.
- Find one extra amount you can put toward debt each pay, even if it's small.
- Send all of that extra to one target debt until it's gone.
- When it's gone, roll its minimum plus the extra onto the next target. The payment grows as each debt disappears.
The only difference is how you choose the order.
Debt snowball: smallest balance first
List your debts from smallest balance to largest and ignore the interest rates. You clear the small ones quickly, which gives you early wins and fewer bills to juggle.
Best for: people who've tried and stalled before, or who feel overwhelmed by the number of debts.
Debt avalanche: highest interest rate first
List your debts from the highest interest rate to the lowest. Mathematically this costs the least interest overall, because the most expensive debt shrinks first. Credit cards often land at the top.
Best for: people who are motivated by the numbers and can stay patient if the first target is a big balance.
Which saves more?
The avalanche saves the same or more interest every time, because money goes to the highest rate first. How much more depends on your balances and rates. If your smallest debt also has the highest rate, both methods give you the same order. The best way to know is to run your real numbers both ways. Our debt snowball calculator guide shows how to set that up.
A simple way to choose
- If the interest difference between the two orders is small, pick the snowball for the motivation.
- If one debt has a much higher rate (for example a credit card well above your car loan), the avalanche is usually worth it.
- A hybrid is fine too: clear one tiny balance for a quick win, then switch to the avalanche.
Australian things to check first
- Interest-free periods: some BNPL and store finance is interest-free but has late fees, and some cards have promo rates that end. Note the end date beside each debt. See our BNPL budgeting guide.
- Balance transfers: can help, but check the revert rate and transfer fee, and don't add new spending to the old card.
- Free help: if repayments are unmanageable, the National Debt Helpline (ndh.org.au, 1800 007 007) offers free financial counselling.
Find your extra payment
Most people find it in their budget rather than their income. Line up your bills with your pay using a fortnightly pay budget, and set up sinking funds so lumpy bills like rego don't push you back onto the credit card.
Want it done for you?
Debt Payoff Planner: Compare snowball and avalanche with your own debts and see your debt-free date. Or start with the free Mini Paycheck Budget.
FAQ
What is the difference between debt snowball and debt avalanche?
Snowball pays off the smallest balance first for quick wins. Avalanche pays off the highest interest rate first to save the most interest.
Which method saves more money?
The avalanche always costs the same or less interest, because the most expensive debt is cleared first.
Can I switch methods halfway?
Yes. Keep paying all minimums and simply change which debt gets your extra payment.
General information only, not financial or tax advice. Check ato.gov.au or a registered tax agent for your situation.