The debt avalanche method pays off your debts from the highest interest rate to the lowest. You pay the minimum on every debt and send all extra money to the one with the highest APR. When it’s paid off, its payment rolls to the next-highest rate. Because the most expensive debt goes first, you usually pay the least total interest.
Run your numbers in the debt avalanche calculator. It ranks your debts by APR, shows when each one is paid off, and compares the result with the snowball method and with paying minimums only.
How the debt avalanche method works, step by step
- List every debt with its balance, APR and minimum payment. Use the regular APR, not a temporary promo rate.
- Sort by APR, highest first. If two debts share a rate, our calculator puts the smaller balance first.
- Pay the minimum on everything so nothing goes late.
- Send every extra dollar to the top of the list until that debt is gone.
- Roll the freed payment down: its old minimum plus your extra goes to the next-highest APR. Repeat until you’re done.
Your monthly budget is fixed for the whole plan: the sum of your starting minimums plus the extra you chose. Each payoff frees a minimum, and that money stays in the plan instead of going back into your spending.
Why paying the highest rate first saves money
Every month, each debt charges interest on its balance at APR ÷ 12. A dollar sitting on a high-rate card costs more each month than a dollar on a low-rate loan. With $1,000 on each, one month of interest is $23.33 at 27.99% and $9.58 at 11.5%.
Your extra payment can only go one place at a time. Pointing it at the highest rate shrinks the balance that costs you the most per dollar, month after month. That’s the whole method.
The SEC’s investor education site, Investor.gov, tells people with balances on several cards to pay down the card with the highest rate first while paying the minimum on the others. Researchers studying how people repay debt describe the same rule as what consumers should do if the goal is the lowest cost (Amar and colleagues, Journal of Marketing Research, 2011).
For context, the Federal Reserve’s average APR on credit card accounts that were charged interest was 22.15% as of Q2 2026. If one of your cards is near that level, compare it with the rates on your car loan or personal loan. Whichever rate is higher goes first.
A worked debt avalanche example
Take three debts with $250 a month extra on top of the minimums:
| Debt | Balance | APR | Minimum |
|---|---|---|---|
| Store card | $1,200 | 17.99% | $35 |
| Visa | $4,800 | 27.99% | $120 |
| Personal loan | $9,500 | 11.5% | $250 |
Your monthly budget is $655.00. The avalanche order is the Visa (27.99%), then the store card (17.99%), then the personal loan (11.5%).
- The Visa is paid off first, in 1 year, 4 months.
- You’re debt-free in 2 years, 5 months.
- Total interest is $2,997.43, and you pay $18,497.43 in all.
The snowball would clear the small store card first, in 5 months, and pay $3,164.65 in interest. On this list the avalanche’s interest is lower by $167.22. The snowball finishes in 2 years, 5 months, so compare the two timelines too. With the same fixed budget, the order often changes the interest more than the finish date.
Paying only the same minimums with no extra and no rollover takes 9 years, 10 months and costs $12,134.88 in interest.
The month-by-month mechanics: each debt is charged APR ÷ 12 on its balance, rounded to the cent. Minimums are paid, then the rest of the budget goes to the top debt. If that debt is paid off partway through a month, the leftover moves to the next debt the same month. Card issuers usually use a daily rate on your average daily balance, so real statements can differ by a few dollars. The methodology page lists every rule.
How promo APRs fit into the avalanche
Our avalanche ranks debts by their regular APR and ignores promotional rates. A 0% balance transfer card with a 24.99% regular APR ranks as a 24.99% debt, even during the promo.
The reason: the promo ends, and the plan runs for years. During the promo months the calculator does charge the promo rate (0% means no interest those months). After the last promo month the regular APR applies. Ranking by the promo rate would push that card to the bottom of the list, where it would sit until the regular rate kicked in on a balance you hadn’t touched.
Two kinds of promo need different handling:
- 0% intro APR, such as a balance transfer offer. When it ends, the regular APR applies to whatever balance is left, from then on.
- Deferred interest, such as a “no interest if paid in full” offer on a store card. The CFPB warns that if you don’t pay the full promo balance by the deadline, you can owe all the interest back to the original purchase date. Being more than 60 days late can also end the promo early.
Deferred interest can justify breaking the avalanche order. If a deferred-interest balance will not be paid by its deadline under the avalanche plan, switch to a custom order in the calculator and put that balance first. The balance transfer calculator helps you check whether a 0% offer gets paid before it expires.
One more rule matters when a single card carries balances at different rates. Under Regulation Z, the card issuer must apply anything you pay above the minimum to the highest-APR balance first. In the last two billing cycles before a deferred-interest period ends, the issuer must apply the excess to the deferred-interest balance first instead.
Downsides of the debt avalanche
- The first payoff can take a long time. If your highest-rate debt is also your biggest, months may pass before any account closes. In the example above, the avalanche’s first win comes later than the snowball’s.
- Motivation matters. A 2016 study in the Journal of Consumer Research found that people felt more motivated when they concentrated payments on one account, most of all on small accounts. If you’ve quit payoff plans before, the debt snowball method may keep you going.
- Rates change. When a statement shows a new APR on any debt, re-rank your list so the extra still goes to the most expensive balance.
- Small gaps, small savings. When your rates are close together, the avalanche and snowball produce similar totals. The difference is largest when a big balance carries the highest rate.
If your highest APR is also your smallest balance, the two methods pick the same order and give the same result. The snowball vs avalanche comparison shows both cases side by side, and which debt to pay off first covers collections, secured loans and other exceptions.
FAQ
What is the debt avalanche method?
It’s a payoff order where you pay the minimum on every debt and put all extra money on the debt with the highest interest rate. When that debt is gone, its payment moves to the next-highest rate. Because the most expensive balance shrinks first, the avalanche usually costs the least total interest.
Is the avalanche method better than the snowball?
On cost, usually yes: targeting the highest rate first tends to pay the least interest. The snowball wins on speed to the first payoff, which some people need to stay on track. If your rates are close or your smallest debt has the highest rate, the two methods land in nearly the same place.
How does the avalanche handle a 0% promo APR?
Our calculator ranks each debt by its regular APR and ignores the promo rate for ordering. During the promo months it charges the promo rate, then the regular APR. For deferred-interest offers, check that the balance clears before the deadline, and use a custom order if it doesn’t.
What if two debts have the same interest rate?
Our calculator puts the smaller balance first. You clear an account sooner, which frees its minimum for the next debt, and because both balances are charged the same rate, the interest cost is nearly identical either way. You can change the order yourself with the custom option.
Does Dave Ramsey recommend the avalanche method?
No. Ramsey Solutions teaches the debt snowball and argues that paying the highest rate first can mean a long wait before any debt is gone, which can make people give up. The avalanche usually costs less interest. Which risk matters more depends on how well you stick with a plan.
Should I include my mortgage in the debt avalanche?
If your mortgage has your lowest rate, it lands at the bottom of the list, so including it changes nothing until everything else is paid. Deciding whether to prepay a mortgage is a separate question that weighs its rate against saving and investing, which our pay off debt or invest guide covers.