Section 179 Vehicle Deduction 2026 Limits
The 2026 Section 179 vehicle limits straight from the IRS: the $32,000 heavy-SUV cap, the $20,300 light-vehicle ceiling, and where bonus takes over.
This article is for educational purposes only and provides estimates, not tax, legal, or financial advice. Tax rules change periodically, always check current IRS guidance or consult a qualified tax professional.
Quick Answer: The 2026 Section 179 Vehicle Limits
For tax years beginning in 2026, Section 179 lets a business expense up to $2,560,000 of qualifying property. Vehicles get their own ceilings on top of that. A sport utility vehicle rated 6,001 to 14,000 pounds GVWR is capped at $32,000 of Section 179 expense. A passenger vehicle rated at or under 6,000 pounds runs into the Section 280F luxury-auto caps instead: $20,300 in the first year if bonus depreciation applies, $12,300 if it does not.
Those two ceilings come from Rev. Proc. 2025-32 and Rev. Proc. 2026-15. If you are reading a page that says the 2026 SUV cap is $31,300 or that the first-year auto cap is $12,200, you are reading 2025 figures.
Key Takeaways
- The 2026 heavy-SUV Section 179 cap is $32,000, up from $31,300 in 2025 (Rev. Proc. 2025-32, section 3.24).
- The 2026 first-year Section 280F caps are $20,300 with bonus and $12,300 without (Rev. Proc. 2026-15, Tables 1 and 2). The $12,200 figure still on many sites is the 2025 amount.
- Section 179 is not what writes off the whole truck. On a heavy SUV it supplies $32,000. Bonus depreciation supplies everything above that.
- Section 179 cannot create a loss. It stops at your taxable income from the active conduct of a trade or business. Bonus has no such limit.
- 100% bonus requires acquisition after January 19, 2025. A vehicle under a written binding contract signed on or before that date drops to 20% bonus even if it is delivered in 2026.
- Claiming Section 179 or bonus permanently disqualifies that vehicle from the standard mileage rate. It is a one-way door.
The 2026 Numbers, in One Table
Two separate IRS releases govern vehicle write-offs for 2026. Rev. Proc. 2025-32 carries the annual Section 179 inflation adjustments, including the sport utility vehicle sub-limit. Published in March 2026, Rev. Proc. 2026-15 sets the Section 280F depreciation caps for passenger automobiles placed in service during the year.
| Limit | 2026 amount | Source |
|---|---|---|
| Maximum Section 179 expense | $2,560,000 | Rev. Proc. 2025-32, section 3.24 |
| Investment phase-out threshold | $4,090,000 | Rev. Proc. 2025-32, section 3.24 |
| Complete phase-out point | $6,650,000 | $2,560,000 plus $4,090,000 |
| Sport utility vehicle sub-limit | $32,000 | Rev. Proc. 2025-32, section 3.24 |
Above $4,090,000 of total Section 179 property placed in service during the year, the $2,560,000 limit drops dollar for dollar. At $6,650,000 of purchases it reaches zero, and bonus depreciation carries the entire first-year write-off.
| Tax year | Bonus depreciation applies | No bonus depreciation |
|---|---|---|
| 1st tax year | $20,300 | $12,300 |
| 2nd tax year | $19,800 | $19,800 |
| 3rd tax year | $11,900 | $11,900 |
| Each succeeding year | $7,160 | $7,160 |
Read the second table carefully, because it is the reason the heavy-vehicle rules exist at all. A $60,000 sedan used 100% for business does not produce a $60,000 deduction. It produces $20,300 in year one and then crawls.
Three Weight Buckets (GVWR, Not Curb Weight)
Everything about vehicle depreciation turns on gross vehicle weight rating, which is the manufacturer’s maximum loaded weight. It is not curb weight, and it is not on the window sticker. Look for the certification label inside the driver’s door jamb. Check it before you sign anything.
Bucket 1: 6,000 pounds GVWR or less
These are passenger automobiles under Section 280F, and the caps in the table above apply no matter how you claim the deduction. Section 179 and bonus depreciation are both available in theory, but the combined first-year deduction cannot exceed $20,300 for 2026, or $12,300 if bonus depreciation does not apply. Most sedans, small crossovers, and compact SUVs land here.
Bucket 2: 6,001 to 14,000 pounds GVWR
These vehicles are outside the Section 280F caps, which is the real substance of the so-called 6,000-pound loophole. If the vehicle is a sport utility vehicle, Section 179 expensing on it is capped at $32,000 for 2026. Bonus depreciation is not capped.
The exemptions matter more than the cap does. Section 179(b)(5)(B) lifts the SUV sub-limit entirely for a vehicle with any of these:
- A cargo bed of at least 6 feet in interior length that is not readily accessible from the passenger compartment
- Seating for more than 9 passengers behind the driver’s seat
- A fully enclosed driver compartment with no seating behind the driver and no body section protruding more than 30 inches ahead of the leading edge of the windshield
Translate that into a dealer lot: a 6-foot-bed F-250 is not subject to the $32,000 cap. A crew cab of the same truck with a 5.5-foot bed generally is. The difference is measured inside the bed, and it can be worth tens of thousands of dollars of first-year Section 179 expense.
Bucket 3: Over 14,000 pounds, or qualified non-personal-use
Box trucks, dump trucks, and vehicles that by design are not likely to be used personally (ambulances, hearses, delivery vans with permanent shelving, taxis) have no vehicle-specific Section 179 limit. They are still subject to the overall $2,560,000 cap and the business-income limit.
Why Section 179 Alone Rarely Writes Off the Whole Vehicle
Here is the limit the dealership pages leave out. Section 179 cannot exceed your taxable income from the active conduct of a trade or business, and it cannot create or increase a loss. Publication 946 calls this the business income limit, and it is the constraint that most often shrinks a real reader’s deduction.
Worked example. A sole proprietor has $18,000 of Schedule C net income for 2026 and buys a $75,000 heavy SUV used 100% for business. The SUV sub-limit says $32,000. The business income limit says $18,000. The Section 179 deduction is $18,000.
The other $14,000 of tentative Section 179 is not lost. It carries forward indefinitely as a Section 179 carryforward and is retested against business income next year. That is a different animal from a net operating loss: it stays trapped inside the Section 179 rules rather than offsetting income generally, so a business that keeps posting thin years can carry the same amount forward for a long time.
Bonus depreciation does not work that way. It has no business income limit and it can create a loss. If your year was thin, bonus is the lever that still moves.
If you want to see how the caps and the income limit interact on your own numbers, the Section 179 deduction calculator applies the $2,560,000 limit, the $4,090,000 phase-out, and the $32,000 SUV cap in order.
How Section 179 and 100% Bonus Depreciation Stack
The One Big Beautiful Bill Act (P.L. 119-21) made 100% bonus depreciation permanent under Section 168(k). The eligibility test has two halves, and most coverage only reports one of them: the property must be acquired after January 19, 2025 and placed in service after that date. Notice 2026-11 provides the interim guidance.
Miss the acquisition half and the math changes badly. A vehicle ordered under a written binding contract signed on or before January 19, 2025 falls back to the legacy phase-down schedule, which is 20% bonus for property placed in service in 2026. The dealer delivering it in 2026 does not fix this. A planned full write-off on a $90,000 SUV becomes $32,000 of Section 179 plus 20% of the remainder.
When the vehicle does qualify, the order of operations is Section 179 first, then bonus on the remaining basis, then MACRS on whatever survives.
Worked example at 100% business use. A $90,000 SUV rated 7,200 pounds GVWR, placed in service in 2026, used entirely for business:
- Section 179: $32,000 (the SUV sub-limit)
- 100% bonus on the remaining basis: $58,000
- First-year total: $90,000
Same vehicle at 70% business use. Most write-ups skip this version, which is the one most owners actually live in. Business-use percentage reduces the depreciable basis before any of the limits apply:
- Depreciable basis: $90,000 x 70% = $63,000
- Section 179: $32,000
- 100% bonus on the remaining basis: $31,000
- First-year total: $63,000
Note what the $32,000 cap did in each case: nothing to the total. Bonus absorbed the rest both times. The cap only bites when bonus is unavailable, reduced, or when you deliberately choose Section 179 to avoid creating a loss you cannot use.
Used vehicles qualify too. Section 179 has always allowed used property, and bonus depreciation applies to used property as long as it is new to you and not acquired from a related party.
The Business-Use Test and Listed-Property Recapture
Vehicles are listed property. Qualified business use has to be more than 50% in the year you place the vehicle in service. Fall at or below that line and Section 179 is unavailable entirely, bonus depreciation is off the table, and the vehicle depreciates under the straight-line alternative depreciation system.
Commuting between home and a regular workplace is never business use, which is what quietly sinks a lot of otherwise legitimate claims.
The harder rule comes later. If business use drops to 50% or less at any point inside the recovery period, Publication 946 requires you to recapture the excess of the accelerated depreciation you claimed over what straight-line would have given you. That excess is ordinary income in the year of the drop, reported on Form 4797. A $90,000 write-off in 2026 followed by a shift to mostly personal driving in 2028 produces a tax bill, not a correction to the old return.
Substantiation is where this gets decided in an audit. Keep a contemporaneous log with dates, destinations, mileage, and business purpose. A log reconstructed the week before an examination is weak evidence and the IRS treats it that way. A mileage log estimate can help you sanity-check the percentage you are claiming before you commit to it.
Claiming It: Form 4562 and the Mileage Fork
Vehicle depreciation is reported on Form 4562. Part I holds the Section 179 election, including the carryforward line. Part V covers listed property: Section A for the depreciation and Section 179 amounts, Section B for business and investment use information on each vehicle, and Section C for the employer questions about personal use.
For a sole proprietor, the result flows to Schedule C line 13. From there it reduces net profit, which reduces self-employment tax and, in most cases, the Section 199A qualified business income deduction along with it. Model that interaction before you buy. The deduction does more against a high-margin year than the sticker savings suggest, and less than expected if it pushes your QBI base down hard. Our guides on Schedule C business deductions and the Section 199A deduction cover both sides, and the self-employment tax calculator shows what a lower net profit does to the 15.3% layer.
Then there is the fork almost nobody frames as a decision. Publication 463 disallows the standard mileage rate for any car on which you claimed a Section 179 deduction or the special depreciation allowance. Take either one and the mileage method is gone for that vehicle, permanently.
For an expensive vehicle driven modestly, depreciation wins easily. For a cheap vehicle driven hard, it often does not. At the 2026 rates, 20,000 business miles is worth about $14,850 (10,000 miles at 72.5 cents through June 30, plus 10,000 at 76 cents from July 1), repeated every year the car is on the road. Against a $20,300 first-year ceiling on a light vehicle, that comparison is not close. Run it before you elect, using the 2026 standard mileage rate and your realistic annual mileage.
The vehicle deduction never sits by itself. It lands on the same return as your home office deduction, your self-employment tax, and every other change in the One Big Beautiful Bill. Tax47 assembles the whole return from your actual W-2, 1099, and Schedule C figures, so you can watch a purchase like this move the refund before you make it. The full calculator library covers the pieces individually.
Sources & References
- IRS Rev. Proc. 2025-32 - Section 3.24 carries the 2026 Section 179 dollar limit, phase-out threshold, and the $32,000 sport utility vehicle sub-limit.
- IRS Rev. Proc. 2026-15 - Tables 1 and 2 give the 2026 Section 280F depreciation caps for passenger automobiles.
- IRS Publication 946, How To Depreciate Property - Business income limit, Section 179 carryover, business-use requirement, and recapture of excess depreciation.
- IRS Publication 463, Travel, Gift, and Car Expenses - Vehicle depreciation limits and the rule disallowing the standard mileage rate after a Section 179 or special depreciation claim.
- IRS Notice 2026-11 - Interim guidance on permanent 100% bonus depreciation after the One Big Beautiful Bill Act.
- IRS Form 4562, Depreciation and Amortization - Part I for Section 179, Part V for listed property.
- 26 U.S. Code section 179 - Statutory text, including the Section 179(b)(5) SUV limitation and its cargo-bed, seating, and enclosed-cab exemptions.
- 26 U.S. Code section 280F - Luxury automobile limits and the listed property rules.
- Public Law 119-21, One Big Beautiful Bill Act - Legislation making 100% bonus depreciation permanent under Section 168(k).
Frequently Asked Questions
How much can I deduct for a vehicle over 6,000 pounds in 2026?
If it is an SUV rated 6,001 to 14,000 lbs GVWR, Section 179 is capped at $32,000 for tax years beginning in 2026. The remaining basis can generally take 100% bonus depreciation, so a heavy SUV used entirely for business can often be written off in full in year one. The $32,000 is the Section 179 piece, not the whole deduction.
Is the 6,000-pound loophole still real in 2026?
Yes, but not for the reason most people think. Vehicles rated above 6,000 lbs GVWR escape the Section 280F luxury-auto caps, which cut a light vehicle off at $20,300 in the first year for 2026. Section 179 itself contributes only $32,000 of a heavy vehicle write-off, and 100% bonus depreciation supplies the rest.
Do pickup trucks get the $32,000 SUV cap?
Not if they qualify for the statutory exemption. A pickup with a cargo bed of at least 6 feet in interior length that is not readily accessible from the passenger compartment is exempt from the SUV sub-limit under Section 179(b)(5)(B). A short-bed crew cab under 6 feet generally is not exempt and stays capped at $32,000.
Can Section 179 create a business loss?
No. Section 179 cannot exceed your taxable income from the active conduct of a trade or business, and it cannot create or increase a loss. Any disallowed amount carries forward indefinitely as a Section 179 carryforward and is retested against business income each year. Bonus depreciation has no such limit and can create a net operating loss.
What happens if my business use drops below 50% later?
You have to recapture. If qualified business use of listed property falls to 50% or less at any point inside the recovery period, the excess of the accelerated depreciation you claimed over straight-line depreciation is added back as ordinary income in that year, reported on Form 4797. Buying a heavy SUV and then switching it to mostly personal use in year two triggers this.
Can I take Section 179 and the standard mileage rate on the same vehicle?
No, and the choice is permanent for that vehicle. IRS Publication 463 disallows the standard mileage rate for any car on which you claimed a Section 179 deduction or the special depreciation allowance. For a lower-cost, high-mileage vehicle, the 2026 mileage rates of 72.5 cents per mile through June 30 and 76 cents per mile from July 1 can be worth more over the life of the car.
Does a financed or leased vehicle qualify?
A financed purchase qualifies. You can deduct the full cost even if you only made a down payment, as long as the vehicle is placed in service by December 31. A capital lease or dollar-buyout lease generally qualifies because you are treated as the tax owner. A true operating lease does not, because you never own the vehicle.
What is the deadline to claim it for the 2026 tax year?
The vehicle has to be placed in service, meaning delivered and available for business use, by December 31, 2026. Ordering or paying for a vehicle in December that does not arrive until January pushes the deduction into the 2027 tax year. Payment date does not control; availability for use does.