Debt Avalanche vs Debt Snowball: The Complete Breakdown

Two strategies dominate debt payoff advice: the avalanche (highest interest first) and the snowball (smallest balance first). Both work. The math favors one; the psychology favors the other.

The Debt Avalanche

Pay minimums on everything, throw all extra at the highest interest rate debt. When paid off, move to the next highest.

Advantage: Minimizes total interest paid. Mathematically optimal.

The Debt Snowball

Pay minimums on everything, throw all extra at the smallest balance regardless of rate. Quick wins build momentum.

Advantage: Eliminating entire debts keeps you motivated through a multi-year process.

Which Saves More?

The avalanche always saves more in interest. On a typical 3-debt example with $500/month extra, the avalanche saves roughly $1,200 more over the payoff period.

Which Actually Works?

Research from Kellogg School of Management found snowball users were more likely to actually eliminate their debt. Psychological momentum matters.

The best method is the one you stick with. Disciplined and math-motivated? Avalanche. Need wins to stay engaged? Snowball. A hybrid — snowball for debts under $1,000 then avalanche — captures both benefits.