What Is Section 179 Deduction in Trucking?
Also called: Section 179, Section 179 Expensing, 179 Deduction
Section 179 lets a business deduct the cost of equipment, such as a truck or trailer, in the first year instead of over several years. For 2026 the most you can deduct is $2,560,000, and that cap shrinks once you buy more than $4,090,000 of equipment. The deduction cannot be more than your business profit for the year. Any extra carries forward (26 U.S.C. 179).
Last reviewed September 23, 2026 · Facts checked October 29, 2026
Key Points
- Section 179 is a choice. You may elect to treat the cost of qualifying property as an expense in the year it is placed in service (26 U.S.C. 179(a))
- For tax years that begin in 2026 the limit is $2,560,000. It is reduced, but not below zero, by the amount that the cost of Section 179 property placed in service in 2026 is more than $4,090,000 (Rev. Proc. 2025-32, section 3.24)
- The deduction cannot be more than your taxable income from running a trade or business that year. Whatever the limit blocks carries forward to a later year (26 U.S.C. 179(b)(3))
- The property must be tangible property bought for use in the active conduct of your business. Property bought from a related person does not qualify (26 U.S.C. 179(d)(1) and (2))
- The deduction can be taken back (recaptured) if the property is not used mostly in the business at any time (26 U.S.C. 179(d)(10)). Keep records of business use
- A cap of $32,000 applies to a sport utility vehicle rated at not more than 14,000 pounds gross vehicle weight. A semi tractor rated above that weight is not in this group (26 U.S.C. 179(b)(5); Rev. Proc. 2025-32)
- Bonus depreciation is a separate deduction. For qualified property acquired after January 19, 2025, it is 100 percent of the adjusted basis (26 U.S.C. 168(k); Public Law 119-21, section 70301). It has no dollar cap of its own
What is the Section 179 deduction?
It is a part of the tax code that lets a business write off the cost of equipment in the first year, instead of spreading the deduction over the years the equipment lasts. For a trucker, the equipment can be a tractor, a trailer, a box truck or other business property. You choose to use it on your tax return, usually on IRS Form 4562. This page is general information, not tax advice. A tax professional can tell you what fits your situation.
How much can a trucker deduct under Section 179 in 2026?
The dollar limit for 2026 is $2,560,000, and it starts to shrink when the equipment you place in service in the year costs more than $4,090,000 (Rev. Proc. 2025-32, section 3.24). Most owner-operators are well below those amounts. The limit that matters more is profit. The deduction cannot be more than the taxable income from your business for the year (26 U.S.C. 179(b)(3)). Our Section 179 truck calculator shows what the deduction is worth next to bonus depreciation.
Does a truck qualify for Section 179?
A truck, tractor or trailer usually can, if you buy it for use in your business and are not buying it from a related person (26 U.S.C. 179(d)). The tax law also asks that the business use be more than half the time, and it can take the deduction back if the truck stops being used mostly for business (179(d)(10)). A pickup or van is a special case. A cap of $32,000 applies to a sport utility vehicle rated at 14,000 pounds or less, with exceptions for vehicles with a long cargo area and for some cargo vans (179(b)(5)(B)).
What is the difference between Section 179 and bonus depreciation?
Both let you deduct a large part of the cost in year one. Section 179 has a dollar limit and a profit limit, and you choose the amount. Bonus depreciation, in 26 U.S.C. 168(k), is 100 percent of the adjusted basis for qualified property acquired after January 19, 2025, with no dollar cap of its own. Bonus depreciation applies automatically unless you elect out for the class of property. Many states treat the two differently, so check your state's rules.
What happens if my profit is lower than the cost of the truck?
Here is an example only, not tax advice. A driver buys a used tractor for $90,000 and puts it in service in 2026. The business has $60,000 of taxable income. Under Section 179 alone, the deduction is limited to $60,000, and the other $30,000 carries forward to a later year (26 U.S.C. 179(b)(3)). The driver could instead use bonus depreciation, which is not tied to profit. The right choice depends on the whole tax picture.
Related Terms
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Frequently Asked Questions
What is a Section 179 deduction?+
A tax choice that lets a business deduct the cost of equipment in the year it starts using it. Without it, the cost is deducted over several years (26 U.S.C. 179(a)).
Can I Section 179 a truck?+
Usually yes, if you buy it for use in your business and not from a related person (26 U.S.C. 179(d)). Business use must be more than half, and the deduction can be recaptured if that changes.
How much Section 179 can I take on a truck in 2026?+
Up to the 2026 limit of $2,560,000, and never more than your business taxable income for the year (Rev. Proc. 2025-32; 26 U.S.C. 179(b)(3)).
Can a Section 179 deduction be carried forward?+
Yes. The part blocked by the taxable income limit carries forward to a later year (26 U.S.C. 179(b)(3)(B)).
What is the maximum Section 179 deduction?+
For tax years that begin in 2026, $2,560,000. It starts to shrink after $4,090,000 of equipment is placed in service (Rev. Proc. 2025-32, section 3.24).
What vehicles qualify for the Section 179 deduction?+
Tangible business property, such as tractors, trailers and box trucks, bought for use in the business. A $32,000 cap applies to a sport utility vehicle rated at 14,000 pounds or less (26 U.S.C. 179(b)(5)).
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This is industry terminology and typical practice. It is not legal or tax advice. Rates, fees, and rules mentioned are general ranges. Confirm the details on your rate confirmation, carrier agreement, or a current official source.