Avalanche vs snowball: choose the method you'll stick with
The debt avalanche method pays minimums on every card and throws every extra dollar at the highest-APR balance first. Mathematically, this saves the most interest. The debt snowball method instead targets the smallest balance first to build psychological momentum from quick wins. Behavioral research from Northwestern University and others suggests the snowball method actually leads to higher completion rates for many people because motivation matters as much as math. Pick the one you'll actually finish.