Debt Payoff Calculator: Plan Your Debt-Free Date
This debt payoff calculator turns a pile of separate balances into a single, clear repayment plan. Enter each debt, add any extra you can pay every month, and instantly see when you'll be debt-free, how much interest you'll pay, and how much you'll save.
It's built for anyone juggling more than one balance — credit cards, student loans, car loans, personal loans, or medical bills. The calculator works out both the Avalanche (highest interest first) and Snowball (smallest balance first) strategies at once, so you can compare them side by side and pick the plan you'll actually stick with.
How to Use the Debt Payoff Calculator
Enter your debts
For each debt, fill in a Name, the current Balance, the APR %, and the Min Payment. Click Add Debt to include as many balances as you need; use the remove button to drop any you don't.
Set your extra payment
Drag the slider or type into Extra Monthly Payment the amount you can pay above and beyond every minimum. This extra is what accelerates your payoff and powers the snowball effect.
Compare the two methods
Switch between Avalanche and Snowball to see how each changes your debt-free date, total interest, total paid, and the interest you save versus paying minimums only.
Review the details
Read the Method Comparison table for a side-by-side breakdown, watch the Payoff Timeline chart, and open the Payment Schedule for a month-by-month view of every payment.
Features
Multiple Debts in One Plan
Add every balance you owe with its name, amount, APR, and minimum payment, then plan them all together.
Avalanche vs Snowball
Both strategies are calculated at once — highest interest first or smallest balance first — so you can choose with confidence.
Extra Payment Slider
Add any extra amount on top of the minimums and instantly see how much faster you become debt-free.
Debt-Free Date
Get the exact month and year you'll clear every debt, plus the total number of months to payoff.
Interest Savings Tracker
See how much interest your plan saves compared with paying only the minimums — real motivation to add more.
Side-by-Side Comparison
A comparison table shows Avalanche and Snowball together and highlights the better option for each metric.
Visual Payoff Timeline
A stacked bar chart shows your remaining balance over time so you can watch each debt disappear.
Monthly Payment Schedule
Open the collapsible schedule for month-by-month payment, principal, interest, and remaining balance.
Multi-Currency Support
Pick your currency and every value rescales automatically, so you can plan in the money you actually use.
Real-Time Results
Everything updates as you type or move the slider — no calculate button to press.
Frequently Asked Questions
What's the difference between the debt snowball and debt avalanche method?
Both pay the minimum on every debt and throw any extra at one target debt. The Avalanche method targets the debt with the highest interest rate first, which minimizes total interest. The Snowball method targets the smallest balance first, which clears debts faster and builds momentum. When a target debt is cleared, its freed-up payment rolls into the next one.
Which method pays off debt fastest and saves the most?
The Avalanche method always pays the least interest overall because it kills high-rate debt first. The Snowball method often feels faster because you eliminate whole debts sooner. The best method is the one you'll stick with — use the comparison table to see the exact dollar difference for your debts, then decide.
How does adding an extra monthly payment change my payoff date?
The extra amount is paid on top of all minimums and applied to your target debt every month. Even a modest extra payment can shave months or years off your timeline and cut total interest. Move the Extra Monthly Payment slider and watch the debt-free date and interest saved update instantly.
What happens when one debt is paid off?
Once a debt reaches a zero balance, its minimum payment is freed up and rolled into the money attacking the next target debt. This snowball effect grows your effective extra payment over time and accelerates the rest of your plan.
Why does a balance grow even though I'm paying it?
If a debt's minimum payment is smaller than its monthly interest charge, the balance can creep upward. This is common with high-APR credit cards and low minimums. Raising your extra payment so more goes to that debt will reverse it.
Can I include any type of debt?
Yes. Add credit cards, student loans, car loans, personal loans, medical bills, or mortgages — anything with a balance, an APR, and a minimum payment works. Just enter those three numbers for each debt and the plan covers them all.
How accurate are the results?
The calculator uses standard monthly compounding with fixed payments. Real results can differ because of variable rates, fee changes, payment timing, or lender rounding. Treat the output as a planning guide rather than an exact prediction.
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