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Loan Payoff Calculator
Find the payoff time and interest with a fixed monthly payment and extra contributions.
- Months until payoff
- 37
- Total interest
- 966.8
- Total paid
- 10,966.8
How the calculation works
Each month, interest accrues on the balance before the payment is deducted. The final payment is limited to the remaining balance plus interest.
Inputs
- Current balance
- Annual interest rate, %
- Regular monthly payment
- Extra monthly payment
Calculation details
A fixed nominal annual rate is divided by 12. Payments are at month end; daily accrual and intermediate rounding are not modeled.
Enter fees separately where provided. Insurance, penalties, and taxes are not included in the interest rate.
New purchases, grace periods, variable rates, and changing minimum payments are not included.
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Updated: 2026-10-02