Debt Snowball vs Avalanche

When someone has several debts—credit cards, personal loans, or medical bills—they often ask the same question: which debt should I pay off first?

Two of the most common strategies are called the debt snowball and the debt avalanche. Both methods follow the same basic rule:

• Make minimum payments on every debt
• Put all extra money toward one priority debt
• When that debt is gone, roll the payment into the next one

The only difference is how the priority debt is chosen.

Imagine someone has three debts:

The snowball order would be:

• $1,200 debt first
• $2,800 debt second
• $4,500 debt last

The avalanche order would be:

• 29% interest debt first
• 18% debt second
• 9% debt last

Now add a fixed $200 extra each month on top of the three minimums ($265). That is a $465 monthly budget. When a debt is paid off, its minimum rolls into the next target. Running a full month-by-month amortization for both strategies produces:

Avalanche finishes 1 month sooner and saves $648 in interest. Snowball delivers its first closed account 11 months earlier (month 6 vs month 17). Those are the two numbers that actually matter in this example.

Avalanche wins the spreadsheet. On this debt mix it costs $1,620 instead of $2,268 and clears everything in 23 months instead of 24. That is a real $648 advantage, and it comes from killing the 29% card first.

The dollar gap is smaller than most people assume when they hear “avalanche always saves more.” Six hundred forty-eight dollars over two years is meaningful, but it is not a life-changing fortune relative to a $8,500 starting balance and a $465 monthly budget.

The motivational gap is bigger than most people assume. Snowball pays off Card A in month 6. Avalanche does not deliver any payoff win until month 17. That is 11 months of grinding the 29% card while the smaller balances sit there, still due every month. If you need an early, visible win to stay disciplined for two full years, snowball’s faster first payoff can be worth more to you than $648. Quitting avalanche in month 10 because nothing feels finished costs far more than $648.

So pick deliberately. Strong follow-through and a wide APR spread (like 29% sitting next to 9%): lean avalanche and take the $648. Need proof that the plan works before you trust yourself for year two: lean snowball, bank the month-6 win, then keep rolling. The method you abandon is the expensive one.

Snowball works well if:

• You need quick wins to stay motivated
• You have many small debts
• You feel overwhelmed by multiple balances

Avalanche works well if:

• You want to minimize total interest
• You have high-interest credit card debt
• You are comfortable waiting longer for the first payoff