Auto Loan Payoff Calculator
Last updated: July 2026
Estimate how quickly an auto loan can be paid off and how much interest may be saved by adding an extra monthly payment.
Estimated payoff time with extra payment
—
- Estimated months to payoff: —
- Estimated interest with extra payment: —
- Estimated interest without extra payment: —
- Estimated interest saved: —
On this page
Quick summary: Estimate how quickly an auto loan can be paid off and how much interest may be saved by adding an extra monthly payment. Enter the requested values, calculate, review the result, and compare more than one realistic scenario before making a decision.
Read the complete guide
What this calculator estimates
Estimate how quickly an auto loan can be paid off and how much interest may be saved by adding an extra monthly payment. It is designed for fast planning and comparison in the United States. The output is an estimate, not a binding quote, approval, tax determination, insurance offer or professional recommendation.
How to use it
Enter the requested values using a single consistent time period and currency. Select Calculate, review the headline result and supporting figures, then change one assumption at a time to compare another scenario.
How the calculation works
The calculator applies monthly interest to the remaining balance, subtracts the regular and extra payment and repeats until the balance reaches zero. It runs the same schedule without the extra payment for comparison.
Important limitations
Lender payoff quotes can include per-diem interest, late fees, prepayment terms and payment timing not modeled here. Confirm the official payoff amount with the lender.
Frequently asked questions
Is the result exact?
No. It is a planning estimate based on the assumptions entered.
Can I compare different scenarios?
Yes. Change one input at a time so you can see which assumption changes the result.
Does the calculator store my inputs?
The calculation runs in the browser and does not require an account. Avoid entering unnecessary confidential information.