Debt Snowball vs. Avalanche: Compare the Tradeoffs
By Beacon · Updated · 3 min read
The debt snowball directs extra payments to the smallest balance first. The avalanche directs extra payments to the highest interest rate first. Both keep required payments going on the other debts. With the same payment budget and stable terms, the avalanche generally reduces interest costs; the snowball prioritizes earlier account payoffs.
Start with a complete debt list
For each account, record its current balance, rate, required payment, and due date. Add a note for a promotional rate or another term that is scheduled to change. This is the information needed to compare payment order.
The amount available for extra payments is what remains after essential expenses and required payments fit into the budget. If that amount is zero or negative, rearranging the order alone will not solve the shortfall.
| Illustrative debt | Balance | APR | Required monthly payment |
|---|---|---|---|
| A | $500 | 8% | $25 |
| B | $2,000 | 24% | $60 |
| C | $5,000 | 12% | $150 |
Sources: CFPB: Highest-interest and snowball debt reduction strategies
Use the same dollars in both comparisons
The example has $235 in required monthly payments. Suppose the total debt-payment budget is $435, leaving $200 extra. The snowball sends that extra $200 to debt A. The avalanche sends it to debt B.
This changes only where the extra payment goes. It does not mean skipping the $60 required on B under the snowball, or the $25 required on A under the avalanche. Keeping the monthly total equal is essential to making the comparison useful.
Sources: CFPB: Highest-interest and snowball debt reduction strategies
Decide what happens after a payoff
Once an account is paid off, keeping the same overall payment budget moves more money to the next target. In the example, eliminating the $25 required payment on A would let that $25 join the $200 extra amount.
If you instead lower the total payment after every payoff, the remaining debts will take longer than a comparison that assumes a constant budget. Neither a spreadsheet nor a calculator can know which behavior you intend unless its assumptions match your plan.
Sources: CFPB: Highest-interest and snowball debt reduction strategies
Check terms that a simple ranking misses
A rate that expires soon, a deferred-interest condition, or a past-due payment can require a closer look than sorting today’s APRs. Check the agreement and ask the creditor to explain any unfamiliar charge or deadline.
If required payments cannot fit alongside essentials, the first task is understanding the shortfall and available options. An extra-payment strategy assumes there is money left to direct. Do not treat a neat payoff order as proof that an unaffordable payment plan is workable.
- Confirm current balances and required payments.
- Mark changing rates and deadlines.
- Compare both orders with an identical budget.
- Review the plan when income or terms change.
Calculators for this guide
Terms in this guide
Sources and further reading
Examples are illustrative and focus on U.S. personal finance. This guide is educational, not individual financial, investment, tax, or legal advice. Read our editorial approach or report a correction.
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