Debt Avalanche vs Debt Snowball: Which Payoff Method Is Best?

If you have several debts, the order in which you pay them off affects how much interest you pay and how quickly you feel progress. The two most popular strategies are the debt avalanche and the debt snowball. Both work; they just optimize for different things.

The ground rules for both

1. List every debt with its balance, interest rate and minimum payment.
2. Decide on a fixed total amount you can put toward debt each month, larger than the sum of the minimums.
3. Pay the minimum on every debt, and put all the extra money toward one target debt.
4. When the target is paid off, roll its whole payment into the next target.

The only difference between the two methods is how you choose the target.

Debt avalanche: highest interest rate first

With the avalanche you always target the debt with the highest interest rate. Mathematically this is optimal: it minimizes total interest and usually gets you debt-free soonest, because you eliminate the most expensive debt first.

Debt snowball: smallest balance first

With the snowball you target the smallest balance regardless of rate. You clear your first debt quickly, which frees up its minimum payment and gives you a psychological win. Research from the Kellogg School of Management found people were more likely to stick with debt repayment when they closed accounts early, which is the snowball's main advantage.

An example

Suppose you have $800 a month for these debts:

In this case both methods start with the store card, which has both the smallest balance and the highest rate. After that, the avalanche targets credit card A (23%) while the snowball targets the car loan ($4,000). The avalanche finishes a month or two sooner and saves a few hundred dollars in interest. The snowball closes a second account several months earlier.

The gap between the methods grows when you have a large, high-rate debt alongside small, low-rate ones. It shrinks when your smallest debts also carry the highest rates.

Which should you choose?

• Choose the avalanche if you are motivated by numbers and confident you will stick with the plan.
• Choose the snowball if you have tried and abandoned debt plans before, or if quick wins help you stay on track.
• Hybrid: knock out one or two tiny balances for momentum, then switch to the avalanche.

The best method is the one you will follow until the end. Either is vastly better than paying only minimums.

Ways to speed things up

• Balance transfer cards with 0% introductory APR can pause interest on card debt, usually for a 3–5% fee.
• Debt consolidation loans can replace several high-rate cards with one lower-rate payment, if your credit qualifies.
• Call your card issuer and ask for a lower rate. It works more often than people expect, especially with a good payment history.
• Put windfalls to work. Tax refunds, bonuses and side income can wipe out a whole debt at once.

Use the credit card payoff calculator to see how long each card will take at your planned payment, and how much a bigger payment would save.