When you have more than one debt, deciding which one to focus on first can feel like a puzzle. Two common approaches — the snowball method and the avalanche method — offer different answers, and both have genuine advantages.
What the snowball method means
The snowball method means targeting the debt with the smallest balance first, while paying the minimum on everything else. Once that debt is cleared, you redirect what you were paying on it towards the next-smallest balance. And so on.
The idea is psychological: clearing a smaller debt quickly creates a sense of progress. That win can make it easier to keep going with the others.
What the avalanche method means
The avalanche method targets the debt with the highest interest rate first, regardless of its balance. This approach tends to cost less in interest over time, because you are reducing the most expensive debt fastest.
It is the more mathematically efficient approach, though it can feel slower — especially if your highest-interest debt also has a large balance that takes time to reduce.
Why motivation matters
The best debt repayment plan is one you actually stick to. If the avalanche method makes sense mathematically but leaves you feeling like nothing is happening for months, the snowball method might be better for you in practice.
There is no shame in choosing the approach that keeps you motivated. Continuing to make payments, consistently, is more important than which account you pay first.
Why interest rates matter
Interest rates determine how much your debt costs you over time. A small balance at a very high rate can cost more than a large balance at a low rate. If the difference in interest rates is significant — say, a store card at 29% versus a loan at 9% — the avalanche method can save a meaningful amount.
How to compare both
List your debts with their balances and interest rates. For the snowball, order them by balance, smallest first. For the avalanche, order them by rate, highest first. Sometimes, as with store cards that are both small and high-rate, both methods point to the same debt first — which makes the decision easy.
When to seek regulated debt advice
If you are struggling to make minimum payments, receiving calls from creditors, or feeling unable to manage debt without significant stress, it is worth speaking to a free qualified debt advice service. StepChange, National Debtline and Citizens Advice all offer free help without judgement.
How Ask Fin can help
High Impact Debt Reduction in Ask Fin lets you list your debts and compare both repayment approaches side by side. It shows which debt each method targets first and helps you understand the difference in practical terms.
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Ask Fin provides general guidance and educational support. It does not replace regulated financial advice or debt advice.