How the Debt Snowball Works
The debt snowball method, popularized by Dave Ramsey, involves listing all debts from smallest to largest balance regardless of interest rate. You make minimum payments on everything except the smallest debt, which receives all available extra funds. Once the smallest debt is paid off, its payment amount rolls into the next smallest debt, creating an accelerating repayment cascade like a snowball growing as it rolls downhill.
Mathematically Suboptimal, Psychologically Powerful
The mathematically optimal approach is the debt avalanche, which targets the highest interest rate first. However, behavioral research shows that the snowball method produces higher completion rates. Eliminating a small debt quickly provides a psychological win that sustains motivation. For someone with a $500 credit card, a $5,000 car loan, and a $20,000 student loan, paying off the $500 balance first creates tangible progress that keeps the repayment plan on track.
When to Use Each Approach
If your debts have similar interest rates, the snowball method is clearly preferable for its motivational benefits. If there is a large interest rate gap, such as a 20% credit card versus a 3% mortgage, prioritize the high-rate debt regardless of balance. The best debt repayment strategy is the one you actually follow through on. Know your own psychology and choose accordingly.