Debt Snowball Calculator
Build your debt payoff plan using the snowball method. Add your debts, set an extra monthly payment, and instantly see the payoff order, interest costs, and how long until you're debt-free. Free, no sign-up, nothing leaves your browser.
Your Debts
3 debtsAmount above minimums you can put toward debt each month. Rolls forward as debts are paid off.
Total Debt
$10,900
3 debts
Debt-Free In
2 yr 10 mo
Month 34
Total Interest
$1,450
13.3% of principal
Total Paid
$12,350
Principal + interest
Payoff Order (Snowball Method)
Medical Bill
$500.00 original balance
Interest paid
$0.00
Credit Card
$2,400.00 original balance
Interest paid
$461.87
Car Loan
$8,000.00 original balance
Interest paid
$988.26
Results are estimates based on constant APRs and fixed minimum payments throughout the payoff period. Actual results may differ due to variable rates, fees, promotional periods, or changes in payment amounts. All calculations run locally in your browser — no data is stored or transmitted.
How It Works
Add your debts
Enter the name, current balance, APR, and minimum monthly payment for each debt — credit cards, loans, medical bills, anything you owe.
Set your snowball
Enter how much extra you can pay each month above the minimums. Even $25–$50 extra makes a meaningful difference and grows as debts are eliminated.
See the payoff order
Your debts are sorted smallest-balance-first. The calculator shows exactly which month each debt is paid off and how much interest it costs.
Track total results
See total months to debt-free, total interest paid, and total paid. Expand the summary table for a full per-debt breakdown.
What Is the Debt Snowball Method?
The debt snowball method is a debt elimination strategy popularised by personal finance author Dave Ramsey. You list all your debts from smallest balance to largest, pay minimums on everything, and put every available extra dollar toward the smallest balance. When that debt is gone, you take its minimum payment and add it to the extra payment you're already making on the next debt. The freed payments "snowball" — growing larger with each debt you eliminate — until the final, largest debt falls.
The psychological power of the snowball method is its early momentum. Eliminating a small balance quickly — even a $300 medical bill — creates a tangible win and builds confidence that the larger debts are also manageable. This motivational effect is why many financial counsellors recommend the snowball method even when the debt avalanche (highest APR first) would save marginally more interest.
Debt Snowball vs. Debt Avalanche
| Factor | Snowball (smallest balance first) | Avalanche (highest APR first) |
|---|---|---|
| Order | Smallest balance → largest | Highest interest rate → lowest |
| Total interest paid | Slightly higher | Lowest possible |
| Speed to first win | Fastest | Slower (may take longer to clear first debt) |
| Best for | Motivation, behavioural adherence | Mathematically optimal, disciplined savers |
Neither method is universally "correct" — the best method is the one you'll stick with. If seeing debts disappear quickly keeps you on track, the snowball may save you more money in practice than an avalanche plan you abandon halfway through.
How to Use the Debt Snowball Calculator
- Click "Add Debt" and fill in each row: the debt name (e.g. "Visa", "Student Loan"), the current balance, the APR (annual percentage rate), and the minimum monthly payment.
- In the "Extra Monthly Payment" field, enter how much additional money you can put toward debt each month. This is the snowball — it starts small and grows as debts are cleared.
- The calculator instantly shows your payoff order (smallest balance first), the month each debt will be eliminated, and the interest cost per debt.
- Review the KPI cards for your total timeline, total interest, and total amount paid across all debts.
- Expand "Full debt-by-debt summary" for a tabular breakdown of every debt's payoff month, interest paid, and total paid.
Understanding the Results
| Result | What it means |
|---|---|
| Debt-Free In | The number of months until your last debt reaches $0 using the snowball strategy. |
| Total Interest | The sum of all interest charges across every debt over the full payoff period. |
| Total Paid | All monthly payments combined — your original total balance plus total interest. |
| Paid off Month N | The calendar month (counting from today) when each individual debt reaches a zero balance. |
Tips to Accelerate Your Debt Snowball
- Start your snowball today: Even $25/month extra makes a material difference over time. Use this calculator to see the before/after impact immediately.
- List every debt: Include medical bills, personal loans, store cards, and buy-now-pay-later balances — even small ones. The snowball method works best when you can eliminate a debt quickly to build momentum.
- Redirect windfalls: Tax refunds, bonuses, or one-off income can be applied as lump-sum payments directly to the target debt, shaving months off your timeline.
- Avoid new debt: Adding new balances during the payoff period resets your progress on the affected debt. Pause discretionary spending on credit during the snowball.
- Re-evaluate monthly: When a debt is paid off, immediately redirect its freed minimum into the snowball rather than lifestyle creep.
Frequently Asked Questions
What is the debt snowball method?
The debt snowball method is a debt payoff strategy where you order your debts from smallest balance to largest, pay minimums on all, and put all extra money toward the smallest. When that debt is cleared, you roll its freed minimum payment into the snowball for the next debt — creating an accelerating payoff effect.
Is the debt snowball or debt avalanche method better?
The avalanche method (highest APR first) minimises total interest and is mathematically optimal. The snowball method may cost slightly more interest but delivers quick wins — debts eliminated sooner — which behavioural research suggests helps more people follow through to completion. The best method is the one you'll actually stick with.
Is my financial data stored or shared?
No. All calculations happen entirely in your browser. The debt names, balances, and payment figures you enter are never sent to any server and are not stored anywhere.
What is the extra monthly payment?
It's the amount above your combined minimum payments that you can put toward debt each month. For example, if your minimums total $350 and you can afford $450/month, your extra payment is $100. In the snowball method, this goes entirely to the target debt and grows larger each time a debt is eliminated.
How accurate are the results?
Results are estimates assuming constant APRs, fixed minimum payments, and no new charges throughout the payoff period. Actual results may differ due to variable rates, fees, promotional periods, or changes in your payment amounts. Check your loan and card agreements for exact terms.
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