Do you have a personal vehicle? Thanks to the One Big Beautiful Bill Act (OBBBA), you may be eligible for a powerful "no new cash outlay" tax deduction beginning in 2025. Here's how it works:
Convert to Business Use
If you convert a personal-use vehicle to business use, the law treats it as placed in service on the conversion date. With OBBBA's reinstatement of 100 percent bonus depreciation, you may deduct up to 100 percent of the vehicle's fair market value—as long as you don't opt out of bonus depreciation.
A Simple Example
Suppose your converted vehicle is worth $31,000 and you use it 70 percent for business. You could deduct $21,700 on your 2025 return.
Which Vehicles Qualify?
Heavy SUVs, pickups, and vans with a gross vehicle weight rating (GVWR) over 6,000 pounds qualify for full bonus depreciation. Smaller vehicles are subject to "luxury auto" limits—but even those allow up to $20,200 in first-year deductions.
A Few Key Rules
- You must use the lower of your vehicle's fair market value or adjusted basis at the time of conversion.
- Section 179 expensing is not allowed for converted assets, but bonus depreciation is automatically applied unless you actively opt out.
- All assets in the same depreciation class are treated the same for bonus depreciation—you're either in or out for the entire group.
What Happens When You Sell?
If you later sell the vehicle, your basis for calculating gains or losses changes depending on whether it's a gain or a loss. The deduction you claimed at conversion directly impacts that calculation.
The Bottom Line
This is a powerful way to deduct the cost of an existing asset without spending new money. If you own a personal vehicle and are considering using it for business, the OBBBA bonus depreciation rules could create a significant deduction opportunity in 2025.