Enter Your Debts
Add all balances, rates, and minimum payments
Debt Name
Balance
APR %
Min Pay
$
Avalanche
Highest APR first. Saves most interest.
Snowball
Lowest balance first. Faster wins.
Avalanche Method
Snowball Method
Debt-Free Date
—
Debt-Free Date
—
Total Interest
—
Total Interest
—
Debt-Free Date
—
—
SummaryAmount
Total Debt Balance—
Monthly Min. Payments—
Extra Monthly Payment—
Total Interest (your plan)—
Total Amount Paid—
Interest Saved vs Min Only—
Payoff Order
Avalanche
| # | Debt | Balance | APR | Paid Off |
|---|
💳
Transfer to 0% APR for 21 months
Eliminate interest · Cut payoff time in half
Sponsored: we may earn a commission at no cost to you.
💳
Transfer your credit card balance to 0% APR for up to 21 months
Compare balance transfer cards · No impact on credit score · Save thousands in interest
Sponsored: we may earn a commission if you apply through this link, at no cost to you.
Avalanche vs Snowball: Which Method Wins?
The avalanche method (highest APR first) always costs the least interest, while the snowball (smallest balance first) clears the first debt sooner. With the four sample debts above and $200 extra a month, avalanche finishes in 55 months with $6,770 of interest, snowball in 56 months with $7,097. Enter your own debts to see both plans and your debt-free date.
Both methods follow the same core principle: pay minimums on all debts, then direct every extra dollar toward one target debt. The difference is which debt gets attacked first.
The avalanche method is mathematically optimal. The snowball method is psychologically optimal. Research shows people who use the snowball method often pay off debt faster in real life: because the quick wins keep them motivated. The best method is whichever one you'll actually stick to.
Avalanche Method
Target the highest-APR debt first. Mathematically minimizes total interest paid. Best for people with large high-rate debts (credit cards at 25%+) who are motivated by numbers and long-term savings.
Snowball Method
Target the lowest balance first. Pays off individual debts faster, creating quick wins. Studies reported in Harvard Business Review found that people who clear small balances first are more likely to pay off all their debt.
Debt Avalanche Example
Three debts: CC at 24% ($3,000), car loan at 7% ($8,000), student loan at 5% ($12,000). Avalanche targets the CC first: saving the most in high-rate interest before moving to the car loan.
Power of Extra Payments
Adding just $100 to $200 extra per month dramatically accelerates debt payoff. With the four sample debts in the calculator ($31,900 in total), an extra $200 a month cuts payoff from 99 to 55 months and saves $11,202 in interest.
Avalanche vs Snowball on the Sample Debts
$31,900 across four debts: $5,400 at 24.99%, $2,800 at 19.99%, $9,200 at 7.5% and $14,500 at 5.5%, with $504 a month of minimum payments. Freed payments roll to the next debt.
| Extra per month | Avalanche | Snowball | Avalanche saves |
|---|---|---|---|
| $0 | 99 months, $17,972 | 100 months, $18,165 | $193 |
| $100 | 69 months, $9,340 | 70 months, $9,906 | $566 |
| $200 | 55 months, $6,770 | 56 months, $7,097 | $327 |
| $500 | 36 months, $3,992 | 36 months, $4,128 | $136 |
The extra payment matters far more than the method. Going from $0 to $200 extra saves $11,202 of interest with the avalanche, while the choice of method is worth a few hundred dollars here.
When Each Debt Gets Paid Off
Same debts with $200 extra a month. Months from today:
| Debt | Avalanche | Snowball |
|---|---|---|
| Card, $5,400 at 24.99% | Month 23 | Month 31 |
| Card, $2,800 at 19.99% | Month 30 | Month 13 |
| Car loan, $9,200 at 7.5% | Month 40 | Month 40 |
| Student loan, $14,500 at 5.5% | Month 55 | Month 56 |
The snowball gives you a paid-off card in 13 months instead of 30. If that early win keeps you going, the extra month and $327 are a fair price.
Mistakes That Slow You Down
- Letting the payment shrink. When a debt is gone, move its whole payment to the next one. This calculator assumes you keep paying the same total every month.
- Minimums that do not cover interest. A $108 minimum on $5,400 at 24.99% is less than the $112 of monthly interest, so that balance grows until extra money reaches it.
- New charges on paid-off cards. Keep the accounts open for your credit history, but stop using them while you pay down the rest.
- Ignoring promotional rates. A 0% balance transfer changes the order: treat it as a low-rate debt until the promotion ends, then as a high-rate one.
For a single card, the credit card payoff calculator finds the payment needed to be debt-free by a set date.
Method and sources. Month-by-month simulation: interest = balance × APR ÷ 12 is added to each debt, every minimum is paid, and the rest of the fixed monthly budget goes to the target debt (highest APR for avalanche, smallest balance for snowball), cascading when a debt is cleared. All figures were computed with that method. Minimum-payment examples assume a common issuer formula of 1% of the balance plus that month's interest. Estimates only; card issuers compound daily and set their own minimums.
Frequently Asked Questions
The debt avalanche method prioritizes paying off debts in order of highest interest rate to lowest. You make minimum payments on all debts, then direct every extra dollar toward the highest-rate debt. Once that's paid off, you roll that payment into the next highest-rate debt (the "avalanche" effect). This method minimizes the total interest you pay over the life of all your debts: making it mathematically the most efficient strategy.
The debt snowball method prioritizes paying off debts in order of smallest balance to largest, regardless of interest rate. You make minimum payments on everything, then attack the smallest debt with every extra dollar. When that debt is gone, you roll the payment into the next smallest. The quick wins of fully paying off smaller debts provide psychological momentum: making it easier to stay committed to the plan over time.
The avalanche method always saves more money in total interest paid: sometimes significantly more. If your highest-rate debt is also a large balance (like a credit card), avalanche can save thousands compared to snowball. However, the gap between the two methods narrows when debts have similar rates or when high-rate debts also happen to be the smallest balances. When your debts rank in the same order by rate and by balance, both methods produce identical results.
Practical sources for extra debt payments: cut subscriptions you don't actively use ($50 to $100/month is common); reduce food costs by cooking at home more (saves $200 to $400/month for many families); temporarily pause retirement contributions above your employer match; sell unused items on Marketplace or eBay; take on a side gig (rideshare, delivery, freelance); direct any windfalls (tax refund, bonus, inheritance) entirely to debt. Even $100 to $200 extra per month compresses your payoff timeline dramatically.
Financial experts generally recommend a hybrid approach: first build a small emergency fund of $1,000 to $2,000 before aggressively paying down debt. Without any emergency cushion, an unexpected car repair or medical bill forces you back onto credit cards, undoing your progress. Once you have a starter emergency fund, attack high-interest debt aggressively. After becoming debt-free, rebuild your emergency fund to 3 to 6 months of expenses.
The fastest path combines multiple strategies: (1) Stop adding new debt; (2) Apply the avalanche method; (3) Find extra income; (4) Balance transfer high-rate credit card debt to a 0% intro APR card; (5) Debt consolidation loan if your credit qualifies for a lower rate; (6) Direct all windfalls to debt. With $500/month in payments on $20,000 at average 15% APR, payoff time is about 4 years and 8 months with $7,899 in interest.
Yes: significantly. The biggest credit score impact comes from paying down revolving debt (credit cards) because this reduces your credit utilization ratio. Bringing card utilization from 80% to under 30% can improve your score by 50 to 100 points fairly quickly. Paying off installment loans (car, student) has a smaller positive impact. Note: closing paid-off credit card accounts can actually lower your score by reducing available credit, generally, keep accounts open with zero balance.
Debt consolidation combines multiple debts into a single loan at a lower interest rate. Common options: personal loan (8 to 15% APR for good credit); balance transfer card at 0% intro APR; home equity loan or HELOC (risky: your home is collateral). Consolidation makes sense when you qualify for a meaningfully lower rate and won't continue racking up new debt.
Minimum payments only is by far the most expensive and slowest way to pay off debt. On $20,000 in credit card debt at 22% APR, paying only a minimum of 1% of the balance plus interest means paying about $55,600 in total over roughly 31 years. Any payoff strategy, even adding $50/month extra, dramatically outperforms minimum-only payments.
Proven motivation strategies: Track every payment visually, a debt payoff chart showing progress; Celebrate milestones, each paid-off debt deserves acknowledgment; Calculate your "freedom number", knowing that paying off debt frees up $X/month is powerful; Find an accountability partner or community (r/personalfinance, Facebook debt-free groups); Focus on each debt individually rather than the total: the snowball method is designed around this principle.
Keep paying the same total and move the freed-up money to the next debt. That rollover is what makes both methods work. In the sample above, clearing the first card frees its $108 minimum plus the extra, so the second card gets over $360 a month instead of its $56 minimum and disappears seven months later.
It depends on the rates and what you pay. The sample debts total $31,900 with $504 of minimums: at that level the last debt is paid in 99 months, adding $200 a month cuts it to 55 months, and adding $500 cuts it to 36 months with $3,992 of interest instead of $17,972.