
Yes, you can write off a car for business, primarily by using the IRS Section 179 deduction, bonus depreciation, or the standard mileage rate. The best method depends on your vehicle's weight, business use percentage, and how long you plan to keep it. For a new heavy SUV used over 50% for business, Section 179 can offer a massive first-year deduction. The core requirement is that the vehicle must be used for legitimate business activities, and you must maintain meticulous records to substantiate the deduction in case of an audit.
The most common methods are:
For certain vehicles, Section 179 is a game-changer. A vehicle must be over 6,000 pounds Gross Vehicle Weight Rating (GVWR) to qualify. Many popular SUVs, like the Ford Explorer or Chevrolet Tahoe, meet this criteria. This allows you to deduct a significant portion of the purchase price in the first year.
| Tax Deduction Method | Key Qualification | 2023 Rate / Limit | Best For |
|---|---|---|---|
| Standard Mileage Rate | Vehicle used for business, charity, medical, moving | 65.5 cents/mile (business) | Those who prefer simplicity, drivers with high mileage |
| Actual Expenses (Depreciation) | Business use > 50% | Deduction spread over 5+ years | New, expensive vehicles kept long-term |
| IRS Section 179 Deduction | Vehicle > 6,000 lbs GVWR, business use > 50% | Up to $1,160,000 (2023) in year one | New/heavy SUVs and trucks for maximum first-year write-off |
| Bonus Depreciation | New vehicle, business use > 50% | 100% of cost in first year (phasing down) | Brand-new vehicles, often combined with Section 179 |
Critical Step: Record Keeping. Without a log, your deduction is at risk. Use an app or a notebook to track the date, mileage, destination, and business purpose for every trip. The IRS requires you to document the percentage of business use, which is calculated as (Business Miles / Total Miles). Commuting from your home to your main office is generally not deductible.

Talk to your accountant before you buy anything. I thought I could just write off my new truck, but the rules are tricky. My guy explained that because it's over 6,000 pounds, I could use Section 179 and save a ton upfront. But you have to prove you really use it for work—I keep a detailed logbook in the glovebox for every job site visit. It’s not a free car, but it makes a big difference come tax time.

The key is documentation. I use a mileage tracker app on my —it's effortless. You need to log the date, where you went, why it was for business, and the odometer reading. The IRS wants to see that your business use is legitimate. If you can't prove it, you lose the deduction. It's boring, but it's the most important part of the whole process. Consistency is everything.

Don't forget about the actual expense method if you have a fancy car or one that's pricey to run. You add up everything—gas, , repairs, even car washes—and then deduct the percentage you use for business. I found this was way better than the standard rate for my plug-in hybrid because I could write off the electricity costs too. It's more paperwork, but the savings were significant.

It's all about the business-use percentage. If you use your car 80% for meeting clients and going to the supply store, you can deduct 80% of your expenses. But driving from home to your main office? That doesn't count. I made that mistake my first year. Now I make sure every trip has a clear business purpose written down. It’s that percentage that determines the size of your write-off, so be honest and accurate.


