Debt Snowball Calculator
Plan a debt snowball: pay minimums on everything and put extra money on the smallest balance first, rolling payments forward as debts clear.
Your inputs
Results
Months until debt-free
37
- Total interest paid
- $2,541.04
- Total paid
- $29,841.04
- Monthly budget used
- $815.00
- Interest difference vs avalanche (positive = this costs more)
- $19.27
≈Estimate based on the stated model and assumptions
| # | Debt | Paid off in month |
|---|---|---|
| 1 | Card B | 3 |
| 2 | Card A | 9 |
| 3 | Car loan | 21 |
| 4 | Student loan | 37 |
Inputs are never added to links for financial, salary or health calculators.
What this calculator does
The snowball method targets the smallest balance first. Clearing a debt quickly can be motivating, and each payoff frees its minimum payment to roll into the next debt.
Formula and method
Worked example
Calculated by this tool with its default inputs:
Inputs
- Your debts — one per line: name, balance, APR %, minimum payment: Card A, 2500, 22, 75 Car loan, 9000, 6, 250 Card B, 800, 18, 30 Student loan, 15000, 5, 160
- Extra amount per month on top of minimums: 300 (any currency)
Results
- Months until debt-free: 37
- Total interest paid: 2,541.04
- Total paid: 29,841.04
- Monthly budget used: 815
- Interest difference vs avalanche (positive = this costs more): 19.27
How to read the results
Compare the interest difference with the avalanche method. If it is small, the motivational benefit of quick wins may be worth it.
Assumptions and limitations
- Assumes fixed rates and no new borrowing.
- Payoff order is set by starting balances.
Financial results are estimates based on the inputs and assumptions shown. They are not financial advice; confirm figures with your lender, provider or a qualified adviser before making decisions.
Questions
Snowball or avalanche — which is better?
Avalanche (highest rate first) always costs the same or less interest. Snowball can help people stay motivated. This tool shows the exact difference for your debts.
Methodology and verification
- Result type
- Estimate based on the stated model and assumptions
- Formula version
- 1.0
- Automated verification
- 3 reference and validation test cases, checked against independently computed values. The site cannot be built if any of them fail.
- Editorial review
- Awaiting human editorial review. The explanation was drafted with AI assistance; the formula and examples are verified by the automated tests above.
Privacy
Everything you enter is calculated in this browser and is not sent to Numerith or anyone else. Because this calculator can involve personal financial or health details, your inputs are never added to share links or saved to history. Privacy policy