How the two methods differ
Both make minimum payments on everything and throw all spare money at one target debt. The avalanche picks the highest rate, which minimises total interest. The snowball picks the smallest balance, which produces a cleared debt sooner and delivers a psychological win.
The financial difference is often smaller than people expect, especially when balances and rates are correlated. When the gap is small, the method you will actually stick with is the better method.
Why the freed-up payment matters
The power in both methods comes from rolling payments forward. When one debt clears, its entire payment joins the attack on the next one, so the amount hitting principal accelerates with each debt eliminated. That compounding effort is what turns a seemingly endless pile into a finite plan.
Frequently asked questions
Which method should I choose?
Avalanche if the interest saving is meaningful and you are motivated by numbers. Snowball if you need early wins to stay committed. The best method is the one you complete.
How much does avalanche actually save?
It varies with your rate spread. When one debt is at 36% and another at 9%, avalanche saves substantially. When rates are similar, the difference can be minor.
What if I have more than three debts?
The same logic applies. Use the three largest or highest-rate debts here to see the pattern, then apply the chosen order to your full list.
Should I consolidate instead?
Consolidating into a single lower-rate loan can beat both methods, provided the new rate is genuinely lower after fees and you do not run the cleared cards back up.
What counts as my monthly budget?
Everything you can direct at debt: all minimum payments plus any extra. If the budget is below the total minimums, you need to increase it or seek help.
Should I keep saving while repaying debt?
Keep a small emergency buffer so surprises do not go straight back on a card, but prioritise high-interest debt over additional saving.