Debt Snowball vs Avalanche: Pick the One You Will Actually Finish
Avalanche saves more interest. Snowball saves more people. Choose accordingly.
Once you have multiple debts and some extra money to throw at them, you have two reasonable strategies for which one to attack first. Avalanche is mathematically optimal. Snowball is psychologically optimal. The right answer is the one you will actually finish.
Debt snowball
Pay minimums on all debts. Throw every extra dollar at the smallest balance first. When it is gone, roll the freed-up money into the next smallest. Keep rolling.
Pros: Quick wins. You eliminate accounts fast, which is motivating. Many people who quit other methods finish the snowball.
Cons: You pay slightly more total interest, because you may be ignoring a higher-APR debt to kill a smaller one first.
Debt avalanche
Pay minimums on all debts. Throw every extra dollar at the highest APR first. When it is gone, attack the next highest APR. Keep rolling.
Pros: Mathematically lowest total interest. Optimal if you are purely optimizing dollars.
Cons: Slower visible progress. You can stare at the same big balance for months. People give up.
Concrete example
Say you have:
- $500 medical bill at 0% APR
- $3,500 credit card at 24% APR
- $1,200 store card at 26% APR
You can throw $300/month extra at these.
- Snowball: Kill the $500 medical bill first (gone in roughly 2 months), then the store card, then the credit card.
- Avalanche: Kill the store card first (highest APR), then the credit card, then the medical bill.
The avalanche saves you maybe $50-$100 in total interest. The snowball gives you a debt eliminated in 2 months, which is the kind of momentum that gets people to month 24.
The hybrid most people should run
Sort debts in order of the snowball (smallest balance first), but bump any 25%+ APR debt to the top regardless of balance. You get the early-win effect without leaving thousands of dollars on the table.
Run both before you pick
Our debt snowball calculator lets you toggle between strategies and shows the dollar difference. For most debt situations, the spread is hundreds, not thousands. Pick the one that keeps you going.
Two rules either way
- Never miss a minimum payment. Late fees and credit damage will undo months of progress.
- Do not take on new debt during payoff. Freeze the credit cards. Drive what you have. Eat at home. Suspend.
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