DEBT · ON YOUR DEVICE
Debt snowball calculator
List up to four debts and an extra monthly amount. The snowball method builds momentum by clearing the smallest balance first.
EXAMPLE ESTIMATE
Your estimate
Enter your values and select Calculate.
Estimates use your assumptions. Calculations use unrounded values; displayed figures are rounded.
HOW IT WORKS
A useful estimate starts with clear inputs.
- Step 1
Enter up to four debts with balance, annual interest rate and minimum monthly payment. Leave unused debts at 0.
- Step 2
Add the extra amount you can pay each month on top of the minimums.
- Step 3
Calculate to see the payoff order, debt-free date and total interest, and compare with the avalanche method.
With debts of 1,000 and 5,000 and enough budget for both minimums plus extra, the snowball method puts the extra on the 1,000 debt first.
Calculation assumptions and limits
Each month interest is added at the annual rate divided by 12, minimums are paid on every debt, then everything left over goes to the smallest remaining balance. When a debt is cleared its payment rolls into the next one, so your total monthly payment stays constant. No new borrowing, fees, promotional rates or changing minimums are modelled.
Can I use this with my local currency?
Yes. All inputs in one calculation must use the same currency. The currency selector changes number formatting and labels; it does not look up exchange rates or convert your amounts. Local loan rules and products may calculate costs differently.
Are my numbers saved?
No. Your inputs and results stay in this page’s memory. Reloading or leaving clears them. Download the CSV or print the result if you want a copy.
Learn more: FTC: coping with debt. WORDMIO calculates locally using the assumptions above.
Build momentum by paying the smallest debt first
The debt snowball method pays the minimum on every debt, then puts every spare pound or dollar on the smallest balance. When that debt is gone, its payment rolls into the next smallest. Because early wins come fast, many people find it easier to keep going.
Enter up to four debts with their balance, interest rate and minimum payment, plus the extra amount you can add each month. The calculator shows the payoff order, the month each debt is cleared, your debt-free date and the total interest, and compares the result with the avalanche method and with paying only the minimums.
Free to use. No sign-up required.
How to use this tool
- Enter each debt’s balance, annual rate and minimum payment. Leave unused debts at 0.
- Add the extra amount you can pay each month.
- Calculate to see the payoff order, debt-free date and total interest.
A practical example
With debts of 1,000 and 5,000, the extra payment first clears the 1,000 debt, then its payment moves to the 5,000 debt.
Before you finish
The minimum payment on each debt must be higher than its monthly interest, or the balance will not fall.
How the snowball method works step by step
First, list every debt from the smallest balance to the largest. Pay the minimum on all of them. Put every spare amount on the smallest balance. When it is cleared, move the whole payment, minimum plus extra, onto the next smallest balance. The payment on the target debt keeps growing, like a snowball rolling downhill.
Why it works for many people
Clearing a debt completely is a visible win. It also removes one bill and one due date. Research on behavior suggests that visible progress helps people keep up a plan, which matters because a plan that is abandoned saves nothing. The calculator shows the month each debt disappears so you can see those milestones coming.
What it can cost you
Snowball ignores interest rates when it chooses the order. If your largest debt also has the highest rate, you will pay it later and the total interest will be higher than with the avalanche method. The comparison box under your result shows the exact difference for your debts, so you can decide whether the motivation is worth the extra cost.
Making the plan stick
Set up automatic payments for the minimums, then schedule the extra amount for the day after payday. Do not take on new debt while the plan runs. If your income changes, update the extra amount and recalculate. For a single card, the credit card payoff calculator gives a simpler view.
Frequently asked questions
How does the snowball method work?
You pay the minimum on all debts and send everything extra to the debt with the smallest balance. After it is cleared, you add its whole payment to the next smallest debt.
Is snowball cheaper than avalanche?
Usually not. Avalanche targets the highest interest rate and normally costs less interest. Snowball can still be the better choice if quick wins keep you motivated. The calculator shows the difference for your numbers.
What if I have more than four debts?
Enter the four that matter most, or combine small debts that have a similar rate. You can run the calculator again with a different set.
Why does it say my minimums never clear the debt?
If a minimum payment is lower than the monthly interest on that debt, the balance grows. Increase the minimum or the extra payment and calculate again.
Does the calculator include new purchases or fees?
No. It assumes you stop borrowing and that rates and minimum payments stay the same until each debt is paid.
Should I use snowball or avalanche?
If you are motivated by quick wins, use snowball. If you want the lowest total cost and can stay disciplined, use avalanche. The two results are shown side by side.