Debt Payoff Calculator
Check whether your monthly payment is enough to shrink the balance on a useful timeline and see how long payoff may take.
Calculator
Debt Payoff Calculator
Enter the amount you still owe.
Use the annual rate for the debt account you want to model.
Enter the amount you can pay each month.
Example values are loaded.
Result
Your result
Paying $400.00 per month could clear the balance in about 3 years 6 months.
Time to payoff
3 years 6 months
Total interest
$4,736.52
Total paid
$16,736.52
Debt snapshot
Next steps
Compare before you move on
Most people use one calculator to answer the first question and a related tool to pressure-test the decision.
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Credit Card Extra Payment Calculator
Calculate how extra monthly payments affect payoff time, interest saved, and total cost on credit card balance.
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See how extra monthly payments can shorten payoff time and reduce interest on a loan balance.
What this calculator shows
High-interest debt can persist much longer than expected if the monthly payment is only slightly above the interest charge.
It lets you test payment scenarios before you commit to a payoff plan.
How to use it
- 1. Enter the current balance you want to pay off.
- 2. Add the annual interest rate on that balance.
- 3. Set the monthly payment you plan to make and compare how long payoff could take.
Formula and assumptions
The calculator models each month by applying interest to the remaining balance and subtracting the fixed monthly payment until the balance reaches zero.
If the payment is too low to cover monthly interest, the calculator warns that the balance will not amortize.
How to read this result
Treat the payoff time as a pressure test, not just a curiosity. If the timeline feels too long, the monthly payment is telling you the balance still owns too much of your cash flow.
Total interest matters almost as much as the payoff date. If interest is still a large share of the total paid, extra payment or consolidation options may deserve a second look.
Use the result to decide the next move: keep the payment, raise it, or compare a refinance or consolidation option before the balance drags on any longer.
Common mistakes
Using the current statement balance but forgetting that new purchases will keep adding to it. This estimate only works cleanly if the balance stops growing.
Testing a payment that barely covers interest and then assuming payoff is underway. If the payment does not beat monthly interest, the debt is not really shrinking.
Looking only at the monthly payment instead of the payoff timeline and total interest. Cheap-feeling payments can still be expensive debt.
Notes
This estimate assumes the balance does not grow with new purchases or fees.
Worked example
A $12,000 balance at 19.9% APR with a $400 payment shows the real timeline and interest drag of high-rate debt.
This example uses the default sample inputs loaded on reset. It does not update with the live calculator entries above.
Time to payoff
3 years 6 months
Total interest
$4,736.52
Total paid
$16,736.52
Feedback
Found a problem on this page?
Report confusing fields, broken math, or missing assumptions with the exact inputs you used so the issue can be reproduced.
FAQ
FAQ
What happens if my monthly payment is below the interest due?
The balance does not pay down. In that case the calculator warns you because the debt will keep growing or stay stuck.
FAQ
Can I use this for credit cards and personal loans?
Yes, as long as you are estimating a single balance with a fixed interest rate and a steady monthly payment.