Debt Snowball vs Avalanche: Which One Actually Clears Debt Faster?

The short answer

The avalanche method (highest interest rate first) mathematically costs the least interest. The snowball method (smallest balance first) clears individual debts sooner, which is why more people stick with it.

How each one works

1. Pay every minimum payment, every month, on every debt.
2. Send every spare pound, dollar or euro at one target debt.
3. When that debt clears, roll its whole payment onto the next target.

The only difference is how you pick the target: highest rate (avalanche) or smallest balance (snowball).

When avalanche wins

• You have one clearly expensive debt — a card at 29% next to loans at 6%.
• Your balances are similar sizes, so snowball gives you no quick win anyway.
• You are motivated by the numbers themselves.

When snowball wins

• You have several small balances you could clear in weeks, not years.
• You have started and stopped before and need visible progress.
• The interest difference between your debts is small.

Run your own numbers

Use the debt payoff calculator to compare both orders side by side with your real balances. The difference is often smaller than people expect — and a plan you finish always beats a plan you abandon.

What matters more than the method

Consistency, and the amount you send above the minimums. Freeing up one payment — a cancelled subscription, a renegotiated bill — usually changes your payoff date more than switching strategy does.