Debt guide
Snowball prioritizes your smallest balance for an earlier visible win. Avalanche prioritizes your highest APR to reduce modeled interest. The better method is the one whose tradeoff fits your numbers and that you can follow consistently.
Last reviewed August 21, 2026
Compare your own debtsSmallest balance first
Make every required minimum payment, then direct your extra money to the debt with the smallest balance. When that debt is paid, roll its payment into the next-smallest balance.
Highest APR first
Make every required minimum payment, then direct your extra money to the debt with the highest APR. After it is paid, move the full available payment to the next-highest APR.
Both strategies below use the same debts, minimum payments, $250 monthly extra payment, and fixed total payment budget. Only the priority order changes. Results come from the same calculation engine as the MonetAdvice Debt Payoff Planner.
| Debt | Balance | APR | Minimum payment |
|---|---|---|---|
| Store card | $1,200 | 8% | $45 |
| Credit card | $6,500 | 25% | $195 |
| Personal loan | $9,000 | 12% | $220 |
In this example, Avalanche directs the extra payment to the 25% APR credit card first and is estimated to save $255 in interest compared with Snowball. The estimated payoff timelines differ by 0 months. This is an illustration, not a promise: actual lender calculations, fees, rate changes, and payment timing can change the result.
There is no universal behavioral answer. Use the numbers to understand the cost, then choose a process you can realistically maintain.
A small balance can disappear sooner, reducing the number of open debts you manage. This can make progress easier to see and may help some people maintain momentum.
Targeting the highest APR first generally reduces the amount of interest generated by the modeled balances. The advantage grows when APRs are far apart.
When balances and APRs produce a similar payoff order, the two methods can finish close together. Seeing the actual dollar and month difference can make the choice simpler.
A changed rate, new expense, missed payment, or different monthly budget can alter the result. A strategy is useful only while its assumptions still match your situation.
If the objective is to reduce interest under otherwise identical assumptions, concentrating extra payments on the highest-rate debt is the lower-cost sequence. The CFPB also presents the highest-interest-rate approach as the method that eliminates the most costly debt first.
Read the CFPB guidanceA field study and three experiments published in the Journal of Consumer Research found that concentrating repayments can increase motivation, with the strongest effect when payments were concentrated on the smallest accounts. That finding does not guarantee that Snowball will work better for every person.
Review the published studyThe example uses monthly interest estimated as APR divided by 12, fixed APRs, fixed minimum payments, no fees, no new charges, and a constant payment budget. Many lenders calculate interest daily or apply payments under account-specific rules.
Keep making every required minimum payment. Check for prepayment penalties and confirm how a servicer applies extra money. If you are behind, facing collections, or unable to cover essentials and minimums, a payoff-order comparison may not address the more urgent problem.
Educational estimates only. MonetAdvice does not provide individualized financial, legal, tax, or credit advice.
Under a model with the same debts, minimum payments, payment timing, and total monthly budget, directing extra money to the highest APR generally minimizes interest. Real accounts can behave differently because of fees, changing rates, promotional terms, payment allocation rules, and new transactions.
Yes. If the smallest debt also has the highest APR, both methods begin with the same account. They may also remain close when interest rates are similar or when extra payments are large enough to clear debts quickly.
No. Both methods assume that you continue making at least the required minimum payment on every debt. The strategy determines where money above those minimums is directed.
You can compare credit cards and installment debts that allow additional payments, but first check each agreement for prepayment penalties, promotional terms, and instructions for applying extra payments. Secured, deferred, or delinquent debts may require additional considerations.
Add your balances, APRs, and minimum payments once. The Debt Payoff Planner calculates both strategies locally in your browser and shows the payoff order, estimated interest, and debt-free date.