Start with the minimums, always
Whatever method you choose, minimum payments on every debt come first - missing one can trigger late fees and hurt your credit score, and neither of those helps you pay anything off faster. Once every minimum is covered, the question becomes where the extra money goes.
The debt avalanche: mathematically optimal
With the avalanche method, you put every extra dollar toward the debt with the highest interest rate, while paying minimums on everything else. Once that debt is gone, you roll its payment into the next-highest rate, and so on.
This is the cheapest way to get out of debt in total dollars paid, because it stops the most expensive interest from accumulating as early as possible. A credit card at 22% is quietly costing you far more per dollar owed than a car loan at 6% - the avalanche method puts your money where it does the most good.
The debt snowball: built for momentum
With the snowball method, you put every extra dollar toward the smallest balance first, regardless of its interest rate, then move to the next-smallest once it's paid off.
It usually costs a bit more in interest over time than the avalanche method, but it's built around psychology rather than math: paying off an entire debt, even a small one, gives you a real win early and often. For a lot of people, that early momentum is what keeps the plan going - a strategy you actually stick with tends to beat a slightly cheaper one you abandon after two months.
Why high-interest debt usually comes first
As a general rule, high-interest debt - credit cards, some personal loans, buy-now-pay-later balances - should be prioritized over low-interest debt like a mortgage or a subsidized student loan. The gap in cost is often dramatic: carrying a balance at 20%+ interest while making only minimum payments elsewhere can undo a lot of otherwise good financial habits.
Low-interest, tax-advantaged, or fixed-rate debt is sometimes worth carrying a bit longer on purpose, especially if extra cash could instead capture an employer 401(k) match or build a first emergency fund. It's a balance, not an all-or-nothing rule.
When consolidation or refinancing makes sense
Debt consolidation - combining several balances into one loan - can help when it meaningfully lowers your average interest rate or simplifies a pile of separate due dates into one. It's worth doing the math on the new rate, any origination fees, and the new term length before signing, since a longer term can lower the monthly payment while actually increasing total interest paid.
Refinancing works similarly for a single loan, like a mortgage or an auto loan: it's usually worth it when rates have dropped meaningfully since you borrowed, or your credit has improved enough to qualify for a noticeably better rate. It's rarely worth it for a small rate improvement once fees are factored in.
A word of caution on consolidation
Consolidating credit card debt onto a new card or loan only helps if the underlying spending habit changes too - it's common to consolidate, feel a sense of relief, and then run the original cards back up. Treat consolidation as a tool for the interest rate, not a reset on the spending that created the balance.
Practical ways to accelerate payoff
- Put windfalls toward debt - tax refunds, bonuses, and cash gifts make a bigger dent than the same amount spread across months of small extra payments.
- Automate an extra payment amount each month so accelerated payoff doesn't depend on remembering or feeling motivated.
- Ask about a lower rate before assuming you need to refinance - a phone call to a credit card issuer sometimes works, especially with a solid payment history.
- Avoid adding new balances while paying off old ones - it's hard to make progress on a debt that keeps getting topped back up.
- Direct any raise or side income toward payoff before it quietly becomes new monthly spending.
Picking your method
Neither method is wrong. If you're motivated by seeing progress and tend to lose steam on long projects, the snowball's quick wins are worth the small extra cost in interest. If you're comfortable playing the long game and want the mathematically cheapest path, the avalanche gets you there. Some people even use a hybrid: snowball the first small win for momentum, then switch to avalanche for the rest.
See where your debt fits in your budget
Once you've picked a method, it helps to see your debts and their payments laid out alongside the rest of your recurring expenses, so you know exactly how much room you actually have to put toward extra payments each month.