Debt Snowball vs Avalanche: A Head-to-Head
Paying off $30,000 of credit-card debt with the avalanche method (highest rate first) clears it in 49 months with $13,850 of interest — about $1,772 and 2 months less than the snowball method (smallest balance first). Avalanche is mathematically cheaper; snowball wins on motivation.
We ran both methods on the same four cards with a $900/month budget.
Snowball vs avalanche, head-to-head
The test debts: Card A $3,000 at 14%, Card B $6,000 at 26%, Card C $9,000 at 18%, Card D $12,000 at 22% — $30,000 total, paid with $900 a month.
| Method | Payoff time | Total interest |
|---|---|---|
| Avalanche (highest APR first) | 49 months | $13,850 |
| Snowball (smallest balance first) | 51 months | $15,622 |
| Avalanche advantage | 2 months faster | $1,772 less |
Which should you choose?
Avalanche (attack the highest interest rate first) always costs the least — here, $1,772 and two months less. Snowball (attack the smallest balance first) costs a bit more but delivers quick wins that keep many people motivated to finish. If the gap is small and momentum matters to you, snowball is a fine trade; if you're disciplined, avalanche saves the most. Model your own debts with the debt elimination calculator.
How we calculated this
Each month we add interest to every balance (the card's APR ÷ 12), then pay the minimum on each card (2% of the current balance, floor $25), then send all remaining budget — $900 a month here — to one target card: the highest APR (avalanche) or the smallest balance (snowball). When a card clears, its payment rolls to the next target. The four test cards are A $3,000 at 14%, B $6,000 at 26%, C $9,000 at 18% and D $12,000 at 22% ($30,000 total). Your own results depend on your exact balances, rates and budget.
Is the debt snowball or avalanche better?
Avalanche (highest interest rate first) saves the most money and time — about $1,772 and two months in our $30,000 example. Snowball (smallest balance first) costs slightly more but its quick wins help many people stay motivated.
How much does the avalanche method save?
In our example, $1,772 in interest and two months versus snowball. The gap grows when your highest-rate debt also has a large balance, and shrinks when rates are similar.
What is the debt snowball method?
You pay minimums on everything and throw all extra money at your smallest balance first, then roll that payment to the next-smallest. The early payoffs build momentum.
What is the debt avalanche method?
You pay minimums on everything and put all extra toward the debt with the highest interest rate first. It minimizes total interest and payoff time.