Is an SUV over 6,000 pounds automatically a full write-off?
The claim: “An SUV over 6,000 pounds is a full write-off.”
Partly true: weight removes the caps, not the business-use test
Not automatically. An SUV rated above 6,000 pounds gross vehicle weight is not a "passenger automobile" under IRC §280F(d)(5), so the annual depreciation caps do not apply. It is still listed property, so it must be used more than 50% for business to qualify for §179 or bonus depreciation, and only the business share of its cost counts. For 2026, bonus depreciation is 100% under P.L. 119-21, and §179 for heavy SUVs is capped at $32,000.
Reviewed by Ebot Mbi, CPA, EA · Last reviewed · Law and figures current as of September 17, 2026
Key takeaways
- Weight above 6,000 pounds (gross vehicle weight rating for trucks and SUVs) removes the §280F(a) annual depreciation caps. It does not remove the business-use test.
- Only the business-use share of the cost is deductible, and business use must exceed 50% for §179 or bonus depreciation.
- For qualifying property acquired and placed in service after January 19, 2025, bonus depreciation is 100% under P.L. 119-21.
- The 2026 §179 limit for SUVs is $32,000 (Rev. Proc. 2025-32), but bonus depreciation can cover the rest of the business share.
- Commuting is personal, and if business use drops to 50% or less in a later year, part of the deduction is recaptured.
Where the claim comes from
Vehicle dealers and social media posts often say that buying a truck or SUV over 6,000 pounds lets you write off the entire price. The claim became more common after P.L. 119-21, the One Big Beautiful Bill Act, restored 100% bonus depreciation for property acquired after January 19, 2025.
The claim starts from a real rule: heavy vehicles are not subject to the annual depreciation caps that limit ordinary cars. What it leaves out is the business-use requirement, which applies to every vehicle regardless of weight.
What the law actually says
IRC §280F(d)(5) defines a passenger automobile as a four-wheeled vehicle made primarily for public roads and rated at 6,000 pounds or less. For trucks and vans, including most SUVs built on truck chassis, the test uses gross vehicle weight rather than unloaded weight. A vehicle above that rating is outside the §280F(a) caps, which for 2026 limit first-year depreciation on a passenger automobile to $20,300 with bonus depreciation (Rev. Proc. 2026-15).
A heavy SUV is still listed property under §280F(d)(4) because it is used for transportation. Under §280F(b) and (d)(1), unless business use exceeds 50%, you must use straight-line depreciation under the alternative depreciation system, and neither §179 nor bonus depreciation is available. The deductible basis is the cost times your business-use percentage, based on your mileage log.
IRC §179(b)(5) limits the §179 deduction for most SUVs between 6,000 and 14,000 pounds. For 2026 that limit is $32,000 (Rev. Proc. 2025-32). Bonus depreciation under §168(k) has no separate SUV cap. For qualifying property acquired and placed in service after January 19, 2025, P.L. 119-21 made bonus depreciation 100%. Property acquired under a binding contract signed before January 20, 2025, follows the prior phase-down rules.
If business use drops to 50% or less in a later year of the recovery period, §280F(b) requires you to include in income the depreciation you took in excess of what straight-line would have allowed. When you sell the vehicle, gain is generally ordinary income to the extent of depreciation claimed.
What is true and what is not
Suppose an owner buys an $80,000 SUV rated at 6,100 pounds and uses it 60% for business, backed by a log. The business-use share is $48,000. With 100% bonus depreciation, all $48,000 can be deducted in 2026. The other $32,000 is personal and never deductible. If business use were 45% instead, none of the cost would qualify for bonus depreciation or §179.
The $32,000 §179 limit does not apply to every heavy vehicle. Section 179(b)(5) excludes certain work vehicles, such as a pickup with a cargo bed at least six feet long that is not readily accessible from the passenger compartment, a van that seats more than nine passengers behind the driver, and certain cargo vans with no seating behind the driver. Those vehicles can qualify for §179 up to the general limit, subject to the same business-use rules.
- True: a heavy SUV is not subject to the annual passenger-auto depreciation caps.
- True: with more than 50% business use, 100% bonus depreciation can cover the entire business share in 2026.
- Not true: weight makes the full purchase price deductible.
- Not true: driving between home and your regular office is business use.
What to do instead
Before you buy, confirm the vehicle's gross vehicle weight rating on the door-jamb label or the manufacturer's specifications, not on a dealer flyer. Estimate your realistic business mileage for the next several years, since the 50% test applies every year of the recovery period.
Keep a contemporaneous log of date, destination, purpose, and miles, and record the odometer at the start and end of each year. Decide whether to take bonus depreciation, §179, or regular depreciation based on your income this year and expected income in later years. A large deduction in a low-income year may be worth less than spreading it out. Also check state conformity, because many states that tax income do not follow federal bonus depreciation.
If the vehicle is owned by an S corporation, make sure personal use is handled correctly, for example by including its value in the owner's wages.
How ebotCPA helps
We confirm the vehicle's weight classification, test your business-use percentage against your records, and compare bonus depreciation, §179, and regular depreciation for this year and later years. We also model recapture and state treatment so you know the full effect before you sign.
Book a $497 Case Analysis to have Ebot Mbi, CPA, EA review your facts before you act.
Assumptions: Tax year 2026; SUV with a gross vehicle weight rating of 6,100 pounds, acquired and placed in service in 2026 by a sole proprietor.; Cost $80,000; 60% business use supported by a mileage log; no trade-in.; Married filing jointly; taxable income of $400,000 before the deduction, so the whole deduction falls in the 24% bracket ($211,400–$403,550 for 2026).; Self-employment tax, the §199A deduction, and state tax are ignored for simplicity.
| Business-use share of cost (60% × $80,000) | $48,000 |
|---|---|
| Personal share, not deductible | $32,000 |
| §179 portion, if elected (2026 SUV limit) | Up to $32,000 |
| Total first-year deduction with 100% bonus depreciation | $48,000 |
| Federal income tax reduction at 24% ($48,000 × 24%) | $11,520 |
At these assumptions, the first-year deduction is $48,000, not $80,000, and the income tax effect is about $11,520 before self-employment tax and §199A effects.
Illustration only; not a projection of your results.
Frequently asked questions
What vehicles qualify for the 6,000-pound rule?
Trucks, vans, and SUVs with a gross vehicle weight rating above 6,000 pounds are not passenger automobiles under §280F(d)(5). Check the rating on the door-jamb label.
How much Section 179 can I take on a heavy SUV in 2026?
Up to $32,000 of the business-use cost, under Rev. Proc. 2025-32. Bonus depreciation can cover the rest of the business share if business use exceeds 50%.
Does 100% bonus depreciation apply in 2026?
Yes, for qualifying property acquired and placed in service after January 19, 2025, under P.L. 119-21, and only if business use exceeds 50% for listed property.
What happens if I stop using the SUV mostly for business?
If business use drops to 50% or less during the recovery period, you include in income the depreciation you took above the straight-line amount.
Have facts like these?
Book a $497 Case Analysis to have Ebot Mbi, CPA, EA review your facts before you act.