Auto Loan Payoff Calculator
See how much you could save by paying extra on your car loan.
Enter your numbers and select Calculate to see results.
About This Calculator
This calculator shows how adding extra payments to your existing car loan shortens the payoff timeline and reduces total interest. Enter your current balance, rate, and current monthly payment, then add an optional extra payment to see the impact.
How This Is Calculated
Extra principal payments reduce the balance interest accrues on, shortening the loan.
- Interest Saved
- — Original total interest minus total interest with extra payments
An $18,000 balance at 7.5% APR with a $450 payment, plus $100 extra/month, pays off several months sooner and saves meaningful interest.
Assumptions
- Assumes the extra payment is applied consistently every month.
- Assumes a fixed interest rate.
Frequently Asked Questions
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Last updated January 15, 2026. Results are estimates for informational purposes only — read our disclaimer.