If you've got more than one debt sitting on your plate — a credit card, a car loan, maybe a Buy Now Pay Later balance or two — you've probably already asked yourself the obvious question: which one do I pay off first?

There's a method for that. It's called the Debt Snowball, and it's one of the simplest, most effective ways to get out of debt — not because it's the cleverest maths, but because it's the method most people actually stick to.

Here's exactly how it works, why it works, and how to start yours today.

What Is the Debt Snowball Method?

The Debt Snowball is a debt repayment strategy where you pay off your debts in order from smallest balance to largest, regardless of interest rate. The steps are simple:

• List every debt you owe, from smallest balance to largest — credit cards, personal loans, car finance, BNPL, the lot.
• Keep making the minimum repayment on every debt except the smallest.
• Throw every extra dollar you can find at that smallest debt until it's gone.
• Once it's paid off, roll its repayment amount into the minimum you're already paying on the next-smallest debt.
• Repeat until every debt is cleared.

That's it. No spreadsheet gymnastics, no refinancing, no negotiating with lenders. Just a clear order of attack and a growing repayment amount as each debt disappears — which is where the "snowball" comes from. Like a snowball rolling downhill, your extra repayment amount picks up size and speed with every debt you clear.

Why Smallest Balance First — Not Highest Interest?

If you've done any reading on debt payoff, you'll know there's another school of thought: pay off whatever has the highest interest rate first, since that's the debt costing you the most money. That approach is called the Debt Avalanche, and mathematically, it's the more efficient method.

So why does the Debt Snowball recommend smallest balance instead?

Because debt payoff isn't just a maths problem. It's a behaviour problem. And behaviour responds to progress you can see.

Research in behavioural economics consistently shows that people who experience an early win — who actually cross a whole debt off their list — are significantly more likely to stay motivated and finish the job. Paying off your $600 Afterpay balance in six weeks feels completely different to watching a $20,000 car loan creep down by 0.5% a month. One feels like nothing is happening. The other feels like winning.

The Snowball trades a small amount of interest efficiency for a large amount of motivation. For most people, especially those just starting out, that trade is well worth it.

A Worked Example

Let's say you're an Australian with the following four debts:

• Afterpay — $400 balance, 0% interest, $100/month minimum
• Credit card — $3,200 balance, 19.5% interest, $95/month minimum
• Personal loan — $8,500 balance, 11% interest, $210/month minimum
• Car loan — $18,000 balance, 7.5% interest, $380/month minimum

Under the Debt Snowball, you'd keep paying the minimums on the credit card, personal loan, and car loan — and put every spare dollar toward the Afterpay balance first. Once that's cleared (fast, since it's small), you take the $100/month you were paying on it and add that on top of your credit card minimum. Now you're attacking the credit card with $195/month instead of $95. When that's gone, the personal loan gets the combined amount. And so on.

Each payoff makes the next one faster. That's the snowball effect in action.

What About the Interest You're "Losing"?

It's a fair question — and worth being honest about. Because the Snowball ignores interest rate, you may pay somewhat more interest overall than you would under the Avalanche method, particularly if your highest-interest debt also happens to be your largest balance.

There is a variation worth knowing: if one of your debts carries a genuinely punishing rate — think payday loans or store cards north of 25% — it's worth tackling that one first regardless of its size. But for most Australians juggling three to five fairly typical debts, the difference in total interest between Snowball and Avalanche is usually smaller than people expect, and the motivational payoff of the Snowball tends to outweigh it.

We cover this trade-off in more detail, with the numbers side by side, in our companion article on Debt Snowball vs Debt Avalanche.

Common Mistakes to Avoid

• Trying to attack two debts at once. Split focus dilutes the momentum that makes this method work.
• Forgetting to roll the freed-up payment forward. The whole engine of the Snowball is reinvesting what you free up — don't let it disappear back into everyday spending.
• Starting without a bare-bones budget. You need to know exactly how much "extra" you actually have each month before you can throw it at debt.
• Ignoring employer superannuation. Keep compulsory and matched super contributions going — that's money you can't easily make up later.

How to Start Your Own Snowball This Week

• Write down every debt you owe, with its balance, interest rate, and minimum repayment.
• Order them smallest balance to largest.
• Work out how much extra you can realistically put toward debt each month.
• Put that extra amount toward debt #1 and keep minimums flowing on the rest.
• Track your progress somewhere you'll actually see it — a fridge chart, a spreadsheet, or an app.

You don't need to have it perfectly figured out before you start. The goal this week is simply to get your list written down and your first extra payment moving.

The Bottom Line

The Debt Snowball isn't the mathematically optimal way to pay off debt — but it's often the one people actually finish. It works by giving you fast, visible wins that build the confidence and momentum to keep going until every debt on your list is gone.

If you're not sure where your own snowball would start, or want to see exactly how fast you could be debt-free, our calculator does the sorting and the maths for you.

General information only. This article does not constitute financial advice and does not take into account your personal circumstances. Consider speaking with a licensed financial adviser or a free financial counsellor (National Debt Helpline: 1800 007 007) before making decisions about your debts.