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Debt payoff time
Simulate monthly interest then fixed payments, up to 1200 months, with no new borrowing or fees. Estimate only; verify assumptions, fees and taxes.
Each month, interest is added at the nominal annual rate ÷ 12 before the fixed payment is deducted. The last payment is reduced to the remaining balance plus interest, and the output reports months, total paid and total interest.
How to use
- Enter your text, values, or image.
- Adjust the options and run the tool.
- Copy or download your result.
Worked example
Example input
Starting balance: 100 Nominal annual interest (%): 12 Monthly payment: 101
Example result
{
"months": 1,
"totalInterest": 1,
"totalPaid": 101,
"finalPayment": 101
}Limitations and details
A payment that does not cover initial monthly interest is rejected, and payoff must occur within 1,200 months.
Inputs and options
- Starting balance
- Number · Minimum: 0
- Nominal annual interest (%)
- Number · Minimum: 0 · Maximum: 1000
- Monthly payment
- Number
Frequently asked questions
Is this tool free and private?
Yes. All 300 tools are free in this phase. Processing happens in your browser; your input and files are not sent to our servers.