Two popular debt payoff strategies, explained honestly, including which one people actually stick with.
Tool: Money Health Check | Stage: Recovery
Snowball or avalanche. This particular debate shows up in nearly every debt payoff guide you’ll ever read. Mathematically, one method reliably wins. Practically, in real households over real months, the “winning” method on paper isn’t always the one that actually gets finished.
Why This Happens
The avalanche method, paying off the highest interest rate debt first, regardless of balance size, saves the most money in theory, and the maths behind this is solid, the snowball method, paying off the smallest balance first, regardless of interest rate, instead builds momentum through early, visible wins. Most advice pushes avalanche as the objectively correct choice, purely on the numbers, but a method you actually stick with, all the way through, reliably beats a mathematically superior method you abandon partway.
The Reframe
The best method is the one you’ll still be following in month six, not the one that looks best in a spreadsheet on day one, if quick, visible wins keep you motivated and engaged, that’s not “doing it wrong”. That’s simply doing it in the way that actually works for your particular psychology.
What To Do
Step 1: List every debt you’re carrying by both balance size and interest rate.
Having both figures visible side by side makes the choice between methods much more concrete.
Step 2: Be honest about whether you’re more motivated by long-term savings or by visible, near-term progress.
There’s no universally correct answer here. It depends on what keeps you engaged over time.
Step 3: Pick the method that matches your honest answer. And feel free to switch later if it stops working.
This isn’t a permanent, irreversible choice; it’s a starting strategy that can be revisited.
See your full picture clearly laid out before choosing between the two strategies.
In practice:
Someone with three debts chooses snowball over the mathematically superior avalanche method, clearing their smallest £400 balance within two months. That early win kept them motivated enough to stay consistent for the following two years, eventually clearing all three debts. A result the “better” method might never have achieved if abandoned early from lack of visible progress.
FAQ
Does the snowball method really cost more in interest than avalanche?
Generally yes, mathematically, though the difference is often smaller than assumed, especially if extra payments are consistent, and it’s frequently outweighed by the benefit of a method someone actually completes.
Can I switch methods partway through?
Yes. Many people start with snowball for early motivation and switch to avalanche once momentum and confidence are established, capturing benefits of both approaches at different stages.
Do balance transfer or debt consolidation options fit into either method?
They can complement either approach by reducing the interest rate on existing debt, but they don’t replace the underlying question of which debt to prioritise paying down first.