Debt snowball vs avalanche: which pays off faster?
Updated October 7, 2026 · By the Souski team
You have several debts and want to be free of them faster: where do you start? Two methods have proven themselves. The snowball pays off the smallest debt first; the avalanche pays off the most expensive first. Here's how they work, a worked example comparing them, and how to choose.
What they share: a fixed amount, and the snowball effect
Both methods rest on the same rule. You decide on a total amount to put towards your debts each month, a little more than the sum of the minimum payments. You pay the minimum on every debt, and all the extra goes to one priority debt. When it's paid off, its payment is added to the extra to attack the next one. The amount you throw at each debt grows every time one is cleared: that's what speeds everything up.
The only difference is the order of the debts.
The debt snowball: smallest debt first
You list your debts from smallest to largest, ignoring the interest rate. You clear the smallest as fast as possible, then the next.
Strength: quick wins. Seeing a debt disappear within a few months is hugely motivating, and motivation is often what's missing to see it through. Limit: you pay a little more interest, since the most expensive debt waits its turn.
The debt avalanche: most expensive debt first
You list your debts from the highest interest rate to the lowest (often credit cards or overdrafts first). You attack the most expensive, then the next.
Strength: mathematically, it's the method that costs the least interest. Limit: if the most expensive debt is also the biggest, the first win can take a while.
Worked example: Malik's debts
Malik has three debts and decides to put €300 a month towards them, €90 more than the minimums.
| Debt | Balance | Annual rate | Minimum |
|---|---|---|---|
| Credit card | €800 | 21% | €40 |
| Personal loan | €2,500 | 7% | €120 |
| Buy now, pay later | €400 | 0% | €50 |
| Snowball | Avalanche | |
|---|---|---|
| Priority order | BNPL → card → loan | Card → loan → BNPL |
| First debt cleared | in month 3 | in month 7 |
| Debt-free | in 13 months | in 13 months |
| Total interest paid | about €197 | about €178 |
Month-by-month calculation, interest charged on the remaining balance, constant rates and amounts.
In this example, the gap between the two methods is small: about €19 of interest. The real gain comes from the extra €90 and the discipline of rolling each freed-up payment into the next debt. Paying only €210 a month, Malik would take 20 months and pay about €305 in interest. The bigger your expensive debts, the wider the avalanche's advantage.
How to choose your method
- Choose the snowball if you've given up on repayment plans before, if you have lots of small debts or if you need to see results quickly.
- Choose the avalanche if one of your debts has a much higher rate than the others (credit card, overdraft) and you're motivated by the numbers.
- A middle ground: clear one tiny debt first for the quick win, then switch to avalanche mode.
5 rules to see it through
- Stop digging: no new borrowing while you repay, and put the credit card away.
- Keep a small buffer for surprises, or the first setback will send you back to credit (see emergency fund).
- Find your extra in the budget: even €30 or €50 more a month changes the timeline. Our 30 tips to save money help you free it up.
- Automate payments just after payday, extra included.
- Celebrate each debt you clear, without replacing it with a new one.
If money is already tight before you even start paying more, begin with our guide on living paycheck to paycheck.
Tracking your loans with Souski
The free loan payoff calculator tells you when each loan will be repaid and the effect of paying extra. In Souski Premium, the loan tracker keeps all your loans in one place, with their remaining balance and payoff date, and your repayments are added to your budget automatically every month.
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Frequently asked questions
Which is better, debt snowball or debt avalanche?
On paper, the avalanche, because it always costs a little less interest. In practice, the best method is the one you'll stick to. If you need quick wins to stay motivated, the snowball is an excellent choice; if your expensive debts are also your biggest, the avalanche saves noticeably more.
Should I save or pay off debt first?
Start with a small buffer, a few hundred euros, so a surprise doesn't force you back into debt. After that, paying off a 20% debt beats any savings account: put most of your effort on expensive debt, then go back to building your emergency fund.
Is a debt consolidation loan a good idea?
It can lower your monthly payment, but often by stretching the term, which raises the total cost. Before signing, compare the total cost of both options, not just the monthly payment, and watch out for arrangement fees and brokers.
What if I can't even pay the minimums?
Contact your lenders before you fall behind to ask for a payment plan, and get free help from an independent debt advice service. They can look at your whole situation and the formal solutions available where you live.
This guide gives general pointers and isn't personalised financial advice.