When snowball is usually better
Snowball tends to fit people who need quick visible progress to stay engaged. If several balances are small and emotionally draining, clearing one fast can make the plan feel real enough to stick with.
Strategy comparison
Debt snowball vs. avalanche: choose momentum or lower interest cost.
The snowball method prioritizes the smallest balance first. The avalanche method prioritizes the highest APR first. Runway is designed to compare both strategies using the same monthly debt budget so you can judge the tradeoff clearly.
| Strategy | Best fit | Main tradeoff |
|---|---|---|
| Debt snowball | People who want early visible wins and habit momentum. | Usually pays more total interest than avalanche. |
| Debt avalanche | People optimizing for lower interest cost and financial efficiency. | Can feel slower at the start if the highest-rate debt is not the smallest balance. |
| Custom ordering | People balancing promo APR deadlines, cash-flow stress, or personal constraints. | Needs clearer explanation to avoid becoming arbitrary. |
When avalanche is usually better
Avalanche usually wins on interest cost because it pushes the highest APR down first. If your main goal is mathematical efficiency and you can tolerate a slower first win, avalanche is the cleaner default.
Why Runway compares both
The useful question is not which strategy sounds smarter in abstract. It is how each strategy changes your projected debt-free date, total interest, and the order of monthly payments under your actual budget.
Use one budget, then compare the tradeoff.
Runway keeps the monthly debt budget fixed and changes only the payoff order. That lets you compare snowball and avalanche without quietly changing the assumptions underneath the result.
Product authorship note: this page is written by Eisen Labs / Runway product to explain how the payoff engine behaves, not to present personalized financial advice.