Budgeting: Debt snowball vs avalanche: which pays off debt faster, with numbers

Debt snowball vs avalanche: what's the difference?

Both methods pay the minimum on every debt and put all your extra money on one debt at a time. They only differ in which debt goes first.

• Avalanche: the highest interest rate first. Costs the least in interest.
• Snowball: the smallest balance first. Clears a whole debt soonest.

When the first target is paid off, its payment rolls onto the next one, so the amount going at each debt grows as you go. That's the same in both methods. The order is the only choice you make.

How does the debt avalanche work?

List your debts from the highest interest rate to the lowest. Pay the minimum on all of them and put every extra unit of money on the top one.

Interest is charged on what you owe, so the debt with the highest rate grows fastest. Paying it first means less of your money goes to interest over the whole payoff. Mathematically, it's always the cheapest order, or tied with the cheapest.

For most people, the top of the list is a credit card. US credit card plans charged an average of 22.36% a year on accounts paying interest in August 2026, according to the Federal Reserve's G.19 consumer credit release. Personal loans and car loans usually charge much less.

How does the debt snowball work?

List your debts from the smallest balance to the largest, whatever the rates. Pay the minimum on all of them and put every extra unit of money on the smallest.

You'll pay a bit more interest, because a high-rate debt may wait in the queue. In exchange, the first debt disappears quickly. Fewer bills each month, one less account to think about, and a visible result early on. For a plan that takes a year or more, that early win is the argument for it.

Which pays off debt faster? A worked example

Here's a worked example in round numbers, the same in any currency. Three debts, minimums of 255 a month in total, and 400 a month extra to put towards them.

The avalanche goes A, then B, then C. The snowball goes B (the smallest), then A, then C.

The avalanche saves about 60 in interest and finishes a month earlier. The snowball clears its first debt five months sooner. Here the gap is small, because Card B's rate isn't far below Card A's. With bigger balances or a wider gap between rates, say a store card at 30% against a small loan at 7%, the avalanche's advantage grows.

Which method should you choose?

The avalanche if you'll keep going without an early win. The snowball if a paid-off debt in the first few months is what keeps you at it.

A plan you finish beats a cheaper plan you abandon in month five. If the rates on your debts are close together, the snowball costs almost nothing extra. If one debt charges far more than the others, start there, even if you otherwise prefer the snowball.

Some people mix them: clear one very small balance first for the quick win, then switch to the avalanche for the rest.

Where does the extra money come from?

From your monthly budget, set before the month starts, not from whatever is left at the end of it.

Decide a fixed extra amount, 400 in the example, and treat it like a bill. If the budget doesn't have room, the categories that change month to month are where it comes from; how to stop overspending goes through them. Every pay rise, bonus or extra paycheck can go on the target debt too.

Keep a small emergency fund while you pay debt down. Without one, the next car repair goes straight back on the card you just paid off. How much should be in an emergency fund explains the first target.

How do you track a debt payoff plan?

List the debts, set the minimums as fixed monthly payments, and check each balance once a month.

In Wealtie, minimum payments can be recurring transactions that log themselves on the due date (the Free plan includes one; Pro has unlimited). Add the extra payment to your monthly budget as its own line, and Budget Health warns you mid-month if spending elsewhere is about to eat into it. Watching the total owed fall, month by month, is what keeps either method going.