If you have multiple debts, paying the minimum on all of them while putting extra money toward just one is almost always better than spreading extra payments evenly across all of them. The question is which debt to target first. There are two main approaches, and they produce genuinely different results.
The avalanche method: highest interest first
The avalanche method targets your highest-interest debt first regardless of balance. Once that is paid off, you roll all the freed-up payment toward the next highest-interest debt, and so on. Mathematically this is the cheapest way to eliminate debt because you minimize the total interest paid across all accounts. If you have a credit card at 27 percent interest and a car loan at 6 percent, the avalanche method says attack the credit card first and hard.
The snowball method: smallest balance first
The snowball method targets the smallest balance first, regardless of interest rate. Once that debt is gone, you roll its payment toward the next smallest. The appeal is psychological: you eliminate accounts entirely and see progress faster. Research shows that people using the snowball method are more likely to stick with their debt payoff plan, which matters because a plan you abandon is less useful than a slightly less optimal plan you actually follow.
Which is actually better
The honest answer is that the avalanche saves more money in total interest, but the snowball may save more money in practice if it keeps you motivated when the avalanche feels slow. If your highest-interest debt also has a large balance, it can take a long time to see progress, and many people lose momentum. If you are disciplined and motivated by numbers, use the avalanche. If you need to see wins to keep going, the snowball is likely to produce better real-world results for you.
There are cases where neither applies cleanly
Some debts require special handling. A debt in collections may need attention regardless of interest rate because it is affecting your credit. A debt with a penalty rate, like a credit card that triggered a 29 percent default rate, may be worth prioritizing on those grounds alone. A small balance that causes you significant stress may be worth clearing even if it is not the highest-rate debt, because the mental relief has real value.
The important thing is to pick one and start
The difference in total interest between the avalanche and snowball is usually a few hundred dollars over the life of a debt payoff, not thousands. The far bigger factor is whether you maintain consistent extra payments at all. Make a list of your debts with their balances and interest rates, pick a method, and commit to it. Revisiting the choice every month delays progress without improving the outcome.