If you have more than one debt — a credit card here, a personal loan there, maybe a car payment on top — you've probably wondered whether there's a smarter way to attack them than just paying whatever you can on each one every month.
There is. Two of them, actually. They're called the debt snowball and the debt avalanche, and they've been debated in personal finance circles for years. Both work. They just optimise for different things.
Here's how each one works, what the data says about which saves more money, and — perhaps more importantly — which one actually gets people out of debt in real life.
The Debt Snowball
The debt snowball was popularised by American financial commentator Dave Ramsey, and the name describes the method perfectly.
You list all your debts from smallest balance to largest, regardless of interest rate. You pay the minimum on everything except the smallest debt — and you throw every extra euro you have at that one until it's gone. Then you take the money you were paying on that debt and add it to the minimum payment on the next smallest. And so on.
The "snowball" refers to the momentum that builds. As each debt disappears, the amount you can throw at the next one gets larger. More importantly, you get a psychological win every time a debt is eliminated — and those wins are more motivating than they might sound.
Example:
- Credit card A: €800 at 15%
- Personal loan: €3,000 at 8%
- Credit card B: €6,000 at 22%
Snowball order: pay off credit card A first (smallest balance), then the personal loan, then credit card B — regardless of interest rates.
The Debt Avalanche
The debt avalanche flips the logic. Instead of ordering debts by balance, you order them by interest rate — highest to lowest. You pay minimums on everything and put every extra euro toward the highest-rate debt first.
The reasoning is purely mathematical. High interest debt costs you the most money over time, so eliminating it first minimises the total interest you pay across all your debts.
Same example, avalanche order:
- Credit card B first: €6,000 at 22% (highest rate)
- Credit card A second: €800 at 15%
- Personal loan last: €3,000 at 8% (lowest rate)
On paper, the avalanche always wins on total interest paid. Sometimes by a significant margin.
Which One Actually Saves More Money?
The avalanche. Mathematically, unambiguously, every time.
By targeting high-interest debt first, you reduce the principal that's accruing the most expensive interest. Over the life of your debt repayment, this compounds in your favour — less interest builds up, which means more of each subsequent payment goes to principal, which accelerates payoff.
The difference can be meaningful. Depending on your debt amounts and interest rates, the avalanche method might save you hundreds or even thousands of euros compared to the snowball.
Which One Actually Gets People Out of Debt?
This is where it gets more complicated — and more human.
A 2016 study published in the Journal of Marketing Research found that people are more likely to successfully eliminate debt when they focus on paying off individual accounts rather than making proportional payments across all debts. The psychological effect of closing an account completely — seeing a zero balance, getting a "paid in full" notification — creates momentum that keeps people engaged with the process.
Other research has found that the snowball method leads to higher debt repayment completion rates, even though it costs more in interest. The reason is simple: paying off debt is hard, and it takes a long time. Motivation matters. If a method feels like it's working, you're more likely to stick with it. If you're grinding away at a large high-interest debt for months with no visible progress, it's easy to get discouraged and fall off the plan.
The best debt repayment strategy is the one you actually follow through on.
How to Decide Which Is Right for You
A few honest questions to ask yourself:
How motivated are you by quick wins? If seeing a debt disappear completely would genuinely energise you, the snowball's psychological rewards are worth the extra interest cost. For many people, they more than make up for it by keeping them on track.
How large is the interest rate spread between your debts? If your highest-rate debt is at 22% and your lowest is at 20%, the difference between methods is minimal. If you have a 24% credit card and a 4% car loan, the avalanche saves significantly more.
How disciplined are you with long-term plans? If you have a track record of sticking to financial plans over months and years, the avalanche's mathematical superiority translates into real savings. If you know you need motivation to stay the course, be honest with yourself about that.
Is one debt causing you outsized stress? Sometimes a debt has an emotional weight beyond its numbers — a medical bill, a loan from a family member, something with a looming deadline. It can make sense to prioritise these even if neither the snowball nor the avalanche would point there, simply to remove the mental burden.
A Third Option Worth Knowing
Some people use a hybrid approach: start with the snowball to build momentum and eliminate one or two small debts quickly, then switch to the avalanche method for the remaining larger debts. You get the psychological boost of early wins and the mathematical efficiency of targeting high-rate debt for the long stretch.
It's not theoretically optimal but it's practically effective — which, as we've established, is what actually matters.
The Most Important Variable Isn't the Method
Here's the thing both methods agree on entirely: the size of the extra payment matters far more than which debt you point it at.
Whether you're snowballing or avalanching, throwing an extra €100 a month at your debt will get you out of debt dramatically faster than the minimum payments alone. The method determines the order. The amount determines the speed.
Before worrying too much about snowball versus avalanche, figure out how much you can realistically free up each month — cut a subscription, reduce eating out, redirect a bonus — and point that at your debt consistently. The order matters less than the habit.
You can use the Debt Payoff Calculator to see exactly how different monthly payment amounts affect your payoff date and total interest — and get a clear picture of what your debt is actually costing you.
This article is for educational purposes only and does not constitute financial advice. Please consult a qualified financial advisor before making investment decisions.