Car Refinance Calculator

Compare the remaining cost of your current auto loan with a refinance offer. See the payment change, total interest, closing-cost break-even and whether extending the term actually saves money.

Current auto loan
Refinance offer

The comparison assumes refinance fees are added to the new principal. Enter zero when fees are waived or paid separately.

Current loan vs. refinance offer

ScenarioPrincipalMonthly paymentTotal interestTotal payments
Keep current loan$25,000$610.32$4,296$29,296
Refinance$25,400$584.94$2,677$28,077
Under these assumptions, refinancing saves about $1,218 over the remaining loan.

How to compare car refinance offers

Start with today’s principal balance, current APR and remaining months—not the original vehicle price or original term. The calculator estimates the remaining current payment and compares it with a new amortizing loan that includes the entered fees.

Total refinance cost = new payments − current principal balance

Total savings = remaining current payments − new payments

A lower payment is not always a saving

Restarting a long term can lower the monthly bill while keeping you in debt longer and increasing total interest. Compare total payments as well as APR. Matching the new term to the remaining current term makes the cost comparison easier to interpret.

What the break-even estimate means

Break-even divides the entered refinance fees by estimated monthly payment savings. It is a simple cash-flow measure, not a full present-value analysis. If the new payment is not lower, a monthly-savings break-even is not reached.

Before refinancing an auto loan

Check for application, title-transfer and lender fees; confirm whether any amount is paid upfront or financed; and compare the new payoff date. Credit inquiries and vehicle-age or mileage limits can also affect the offer available to you.

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© 2026 AutoCalcResults are estimates. Verify current rates and rules before making a financial or legal decision.