Calculator
Debt Payoff Calculator
Estimate how long a debt balance may take to pay off, how much you may pay in total, and how much interest may accumulate under a fixed monthly payment.
Result
Estimated months to payoff
50 months
Estimated total paid
$17,203.76
Estimated interest paid
$5,203.76
How to use this calculator
What this calculator does
Estimate how long a debt balance may take to pay off, how much you may pay in total, and how much interest may accumulate under a fixed monthly payment.
How to use it
Enter the current debt balance, annual interest rate, and planned monthly payment. Review the payoff time and interest estimate, then test higher payments to see whether the timeline changes meaningfully.
What the result means
Use the result as a planning estimate. Compare it against your budget, then account for fees, taxes, timing, and lender or account rules before making a decision.
Browse more finance calculators for related estimates and comparisons.
Results are estimates for planning and education. They do not include every fee, tax, lender rule, market outcome, inflation factor, or personal financial circumstance.
Scenario guidance
When to use this
Use this when checking whether a planned payment is large enough to reduce a debt balance and how long payoff could take.
Example scenario
A borrower with a credit card balance can compare $300, $350, and $450 monthly payments before choosing a payoff target that fits the budget.
Inputs that usually matter most
- Debt balance, because it sets the starting amount owed.
- Annual interest rate, which determines how much interest is added each month.
- Monthly payment, because it must be large enough to cover interest and reduce principal.
Common mistake to avoid
Do not ignore new charges, fees, promotional-rate expirations, penalty rates, or minimum-payment changes while paying the debt down.
How to interpret the result
Use the payoff time, total paid, and estimated interest to compare payment scenarios. If the payment barely covers interest, the balance can shrink slowly or not at all.
Results are estimates for planning and education. Actual payoff timing can vary with rates, fees, payment timing, balance changes, promotional terms, account rules, and personal circumstances.
Formula
The calculator simulates payoff month by month, applying interest, subtracting the monthly payment, and stopping when the balance reaches zero or the 600-month cap is reached.
Example debt payoff
A $12,000 balance at 18.5% annual interest with a $350 monthly payment may take about 50 months to pay off, with about $5,204 in estimated interest. Raising the payment can shorten the timeline because more of each payment goes toward principal.
Frequently Asked Questions
Why does the calculator show the payment as too low?
If the monthly payment is less than or equal to the first month's interest, the balance will not shrink under this simplified payoff model.
Does this include new purchases or fees?
No. Add new charges, late fees, balance-transfer fees, promotional-rate changes, or penalty rates separately when planning payoff.
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