Every year, around this time, the same type of question appears from business owners: “Can I write off the entire cost of a car if I buy it before December 31?” It usually accompanies a video featuring someone leaning against an SUV promising that the government will pay for the whole thing.

The short answer is no. The rules for deducting a business vehicle are clear, and the discrepancy between what is promised on social media and what can be written off according to the law can cost you in an audit.

Let’s go through an example: $50,000 passenger car under 6,000 pounds, purchased from an unrelated seller, placed in service in 2026, driven 60% for business and deducted using the actual expense method. All dollar amounts are based on federal-only numbers.

The deduction amount depends on the use of the vehicle, not its ownership.

The amount you can deduct does not depend on whether the car title is in your name or whether it is an LLC buying the car. The deduction amount depends on how much of the vehicle was used for business purposes. A vehicle used 60% for business purposes will be 60% deductible and the other 40% personal, no matter the purchase structure.

Commuting trips create the most common errors. Commuting from home to a regular workplace or business location is always personal, regardless of the fact that the vehicle belongs to the business. Driving from the workplace to a client or from one job site to another is considered business use.

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