Debt Snowball Calculator
List your debts, add whatever extra you can pay each month, and get your debt-free date, total interest, and the exact order your balances clear.
Your debts
Everything runs in your browser. Nothing is uploaded.
On top of every minimum payment.
Payoff method
Payoff order
| # | Debt | Balance | Rate | Cleared | Interest |
|---|---|---|---|---|---|
| 1 | Store card | 900.00 | 27% | Month 5 | 54.13 |
| 2 | Credit card | 2,500.00 | 22.9% | Month 15 | 471.69 |
| 3 | Car loan | 8,000.00 | 6.5% | Month 28 | 786.90 |
Estimates cover principal and interest only and exclude fees, promotional rates, and changing minimums. Treat the debt-free date as a close estimate.
How to build a debt snowball payoff plan
List your debts
Add a row for each debt with its current balance, annual interest rate, and minimum monthly payment.
Add your extra payment
Enter the extra amount you can put toward debt each month and choose the snowball or avalanche method.
Read the plan
The debt-free date, total months, total interest, and payoff order update instantly as you edit the numbers.
Why use this tool
Snowball and avalanche in one place
A single toggle switches between paying the smallest balance first for momentum and the highest interest rate first for the lowest total cost, so you can compare both plans in seconds.
Debt-free date up front
The month you clear the last balance sits next to the total interest and total paid, which turns comparing two strategies into a ten-second job.
Rolls freed-up payments automatically
When a debt is cleared, its payment folds into the next target debt every month, which is the whole point of the snowball and is easy to get wrong by hand.
Warns when a plan cannot pay off
If the minimum payments plus your extra amount cannot outpace the interest, the tool says the balances will not clear instead of inventing an impossible date.
No currency assumptions
Results are plain numbers without a symbol, so the same math works for dollars, euros, pounds, or anything else you owe in.
Private by default
Your balances are sensitive. Everything is calculated on your device and nothing is uploaded, stored, or logged.
About this tool
This debt snowball calculator turns a list of debts into a month-by-month payoff plan. Enter each balance, its annual interest rate, and the minimum payment, then add whatever extra you can put toward debt each month. The tool pays the minimum on every debt and throws all remaining money at one target debt until it clears, then rolls that freed-up payment onto the next target. The snowball method targets the smallest balance first, which clears whole debts quickly and builds momentum. The result is your debt-free date, the total number of months, the total interest you will pay, and the exact order your debts fall in.
A built-in toggle switches to the avalanche method, which targets the highest interest rate first. Avalanche almost always costs less interest overall, while snowball tends to feel more motivating because accounts disappear sooner. Running both and comparing the total interest is the fastest way to decide which trade-off suits you. To model a single loan in detail, the loan calculator breaks one balance into its full payment schedule, the compound interest calculator shows how the same money grows once the debt is gone, and the savings goal calculator helps you plan what comes next.
Everything is calculated on your device as you type, and nothing is uploaded, stored, or logged, which matters when the numbers are your actual debts. The plan covers principal and interest only. Promotional rates, fees, changing minimum payments, and new borrowing are not modeled, so treat the debt-free date as a close estimate rather than a guarantee. If the minimum payments plus your extra amount cannot outpace the interest, the tool tells you the balances will not clear instead of showing a date that could never happen.
Frequently asked questions
- How does the debt snowball method work?
- You pay the minimum on every debt, then put every spare dollar toward one target debt until it is gone. The freed-up payment then rolls onto the next debt, so the amount going to debt each month stays the same while it clears balances faster and faster. Snowball orders debts by smallest balance first.
- What is the difference between snowball and avalanche?
- Both roll freed-up payments forward, but they choose the target differently. Snowball attacks the smallest balance first for quick wins and motivation. Avalanche attacks the highest interest rate first, which almost always pays less total interest. Use the toggle to compare the total interest and debt-free date for each.
- What happens if my payments cannot cover the interest?
- If the minimum payments plus your extra amount grow slower than the interest, the balances never reach zero. Rather than show an impossible date, the tool tells you the plan will not clear, so you know you need a larger extra payment or a lower rate.
- Does it include fees, promotional rates, or credit limits?
- No. The plan covers principal and interest with a fixed minimum payment for each debt. Promotional zero-percent periods, annual fees, penalty rates, and new borrowing are not modeled, so treat the result as a close estimate.
- Do I have to enter a currency?
- No. Results are shown as plain numbers with no currency symbol, so the same math works whether you owe in dollars, euros, pounds, or anything else. Just keep every debt in the same currency.
- Is my debt information private?
- Yes. Your balances, rates, and payments never leave your device. Everything is calculated in your browser and nothing is uploaded, stored, or logged.
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