Debt Snowball vs. Avalanche Calculator: Which Pays Off Debt Faster?
Enter all your debts and the extra amount you can pay each month. The calculator builds both payoff plans, shows your debt-free date, the total interest and the month each debt disappears, and lets you download the full schedule.
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The debt snowball and the debt avalanche are the two most popular ways to pay off several debts. Both use the same monthly budget: you pay the minimum on every debt and put all extra money toward one target. When that debt is gone, its payment rolls to the next one. The only difference is the order. This calculator runs both plans on your real numbers so you can see what the choice is worth.
Debt snowball vs. avalanche calculator
List your debts and how much extra you can pay each month. The calculator compares the avalanche (highest APR first) and the snowball (smallest balance first).
Interest is charged monthly at APR / 12 and minimum payments stay fixed until a debt is paid off. Real card minimums usually shrink as the balance falls, and lenders calculate interest on the daily balance, so actual results differ slightly. The first payment is assumed one month from now.
Key takeaways
- Avalanche: highest interest rate first. It always costs the least interest.
- Snowball: smallest balance first. Debts disappear sooner, which keeps many people motivated.
- In the example, both plans take 26 months, and the avalanche saves $230 in interest. Paying only the minimums would take 63 months and cost $7,255 in interest.
- The extra payment matters more than the order: $300 extra a month saves about $4,068 compared with minimums only.
The example: four debts and $300 extra
| Debt | Balance | APR | Minimum | Avalanche: paid off | Snowball: paid off |
|---|---|---|---|---|---|
| Store card | $1,500 | 26.99% | $45 | Month 5 | Month 5 |
| Credit card | $6,500 | 22.99% | $195 | Month 18 | Month 22 |
| Personal loan | $4,000 | 14.50% | $140 | Month 21 | Month 13 |
| Car loan | $9,000 | 7.50% | $285 | Month 26 | Month 26 |
| Method | Debt-free in | Total interest |
|---|---|---|
| Avalanche | 26 months | $3,186.83 |
| Snowball | 26 months | $3,416.47 |
| Minimum payments only | 63 months | $7,254.80 |
The total monthly payment is $965: $665 in minimums plus $300 extra. Here the smallest debt also has the highest rate, so both methods start the same way. They differ afterwards: the avalanche attacks the 22.99% card, the snowball the smaller 14.5% loan.
How the calculator works
- Each month, interest is added to every debt at its APR ÷ 12.
- Every debt receives its minimum payment, or the rest of its balance if that is smaller.
- The rest of your monthly budget goes to the target debt: the highest APR (avalanche) or the smallest starting balance (snowball). If the target is paid off mid-month, the leftover flows to the next debt.
- The total you pay each month stays the same until everything is paid off, so freed-up minimums roll over automatically.
The comparison with minimum payments assumes each minimum stays fixed and nothing rolls over. On real credit cards the minimum usually shrinks as the balance falls, which makes paying only the minimum take even longer.
Snowball or avalanche: how to choose
| Avalanche | Snowball | |
|---|---|---|
| Order | Highest APR first | Smallest balance first |
| Total interest | Lowest possible | Same or higher |
| First debt gone | Can take longer | Usually fast |
| Best for | Large, high-rate balances; people motivated by numbers | Many small debts; people who need quick wins |
If the calculator shows only a small difference, pick the method you will stick with. If the avalanche saves hundreds or thousands, it is usually worth the patience. Lowering the rate itself can beat both: a 0% balance transfer or a cheaper consolidation loan; see how to pay off credit card debt and debt consolidation loans.
Tips that make either plan work
- Stop adding new debt. Use a debit card or cash for everyday spending while you pay down; see credit card vs. debit card.
- Keep a small emergency fund so a car repair does not land on the card again.
- Automate the payments, including the extra amount on the target debt.
- Put windfalls to work: tax refunds and bonuses shorten the plan by months.
- Keep paid-off cards open if they have no annual fee; that helps your credit utilization.
Frequently asked questions
Is the debt avalanche always cheaper?
Yes, it never costs more interest than the snowball with the same budget, but the difference can be small, especially when the smallest debts also have the highest rates.
Should I include my mortgage?
Usually not. Mortgages have low rates and long terms. Most people include credit cards, personal loans, car loans and sometimes student loans.
What if I cannot afford all the minimum payments?
Call your lenders about hardship programs and consider a nonprofit credit counselor, who can set up a debt management plan.
Does paying off debt raise my credit score?
Lower card balances usually raise it because your utilization drops. Paying off an installment loan can cause a small, temporary dip.
Can I download my payoff plan?
Yes. The PDF and CSV downloads contain the full month-by-month schedule for both methods; the CSV shows the payment to every debt.
