If you have more than one debt, the order you pay them off in actually changes how much you pay in total and how it feels along the way. The two most common strategies, debt snowball and debt avalanche, give different results depending on what you’re optimizing for: your total cost, or your motivation to keep going.
The Two Methods, Explained Simply
Debt Avalanche: Pay minimums on everything, then put every extra dollar toward the debt with the highest interest rate first. Mathematically, this always saves you the most money in total interest.
Debt Snowball: Pay minimums on everything, then put every extra dollar toward the smallest balance first, regardless of interest rate. It usually costs a bit more in total interest, but it produces quick wins — a fully paid-off debt sooner.
A 2012 study published in the Journal of Marketing Research, “Can Small Victories Help Win the War? Evidence from Consumer Debt Management” by researchers David Gal and Blakeley McShane, found that people who paid off smaller debts first were more likely to eventually become debt-free than those who prioritized high-interest debt, supporting the psychological logic behind the snowball method.
A Real Numeric Example
Say you have three debts and $300/month extra to put toward them beyond the minimums:
| Debt | Balance | Interest Rate (APR) | Minimum Payment |
|---|---|---|---|
| Credit Card A | $1,200 | 24% | $35 |
| Personal Loan | $4,500 | 11% | $120 |
| Credit Card B | $2,800 | 19% | $70 |
| Method | Payoff Order | Approx. Time to Debt-Free | Approx. Total Interest Paid |
|---|---|---|---|
| Avalanche | Credit Card A (24%) → Credit Card B (19%) → Personal Loan (11%) | ~17 months | Lowest of the two — the highest-rate balances stop accruing interest soonest |
| Snowball | Credit Card A ($1,200) → Credit Card B ($2,800) → Personal Loan ($4,500) | ~17 months (same order here, since the smallest balance also has the highest rate) | Slightly higher when balance order and rate order don’t match — the gap widens the more your smallest debt has the lowest rate |
In this specific example the two methods happen to agree on the first debt to target. That’s not always the case.
What the First Few Months Actually Look Like
Using the avalanche order from the example above ($300/month extra, applied to Credit Card A first):
| Month | Credit Card A (24%) | Credit Card B (19%) | Personal Loan (11%) |
|---|---|---|---|
| Start | $1,200 | $2,800 | $4,500 |
| Month 1 | $941 | $2,756 | $4,461 |
| Month 2 | $679 | $2,712 | $4,420 |
| Month 3 | $413 | $2,667 | $4,379 |
| Month 4 | $143 → paid off mid-month | $2,622 | $4,337 |
Figures are simplified estimates for illustration and round interest to the nearest dollar; they don’t account for exact daily compounding or payment date timing.
Notice that Credit Card A disappears around month 4 in this example, at which point its former minimum payment ($35) and the extra $300 both roll onto Credit Card B — this is the “snowball” effect that both methods share, just applied to a different debt first depending on which strategy you’re using.
Which Method Fits You?
So Which One Should You Actually Use?
- Choose Avalanche if: you’re motivated by numbers and math, not by visible progress, and you want to minimize total interest paid above all else.
- Choose Snowball if: you’ve tried paying off debt before and lost motivation partway through — the psychological win of eliminating a full balance quickly tends to matter more for follow-through than the small extra interest cost.
- There’s no wrong answer if it gets you to stay consistent. A “worse” method you actually stick to beats a “better” method you abandon after two months.
Frequently Asked Questions
Can I switch methods partway through?
Yes, and it’s a reasonable move if you started with avalanche but find yourself losing motivation. Just recalculate your order at the point you switch rather than trying to combine both simultaneously.
What about a 0% promotional APR credit card?
Treat it based on the rate it reverts to after the promo ends, not the current 0%, unless you’re confident you’ll have it paid off before the promotional period expires — otherwise the retroactive or reverted interest can undo the benefit.
Does either method affect my credit score differently?
Not directly — your score responds to on-time payments and your overall utilization dropping, both of which happen with either method. The difference is in total interest cost and motivation, not credit scoring.
Should I stop saving entirely while paying off debt?
Keep contributing to a small emergency fund at minimum — see how much you actually need. Without one, a single unexpected expense often means going right back into debt while you’re trying to pay it off, which cancels out your progress.
Disclaimer: This article is for general educational purposes only and is not personalized financial advice. Consider speaking with a licensed financial professional for advice specific to your circumstances.
