Section 179 and Truck Equipment: What Qualifies Before December 31

If you run work trucks or vans, the truck box, ladder rack, or van shelving you've been putting off may be cheaper than you think, as long as it's bolted on and working by December 31, 2026. Section 179 lets qualifying businesses deduct the full cost of business equipment in the year it goes into service, instead of spreading it over five or more years.

For 2026 the limits are higher than ever, and the rules for upfit equipment are simpler than most owners expect. Here's what qualifies, what doesn't, and what "before December 31" actually means.

This article is general information, not tax advice. Please confirm your business situation with your CPA or tax professional before you buy.

What Section 179 is, and the 2026 limits

Section 179 is an election in the tax code that lets a business expense the cost of qualifying equipment in the year it's placed in service. Without it, you'd normally depreciate a truck accessory or upfit over several years, taking a small slice of the cost each year.

The One Big Beautiful Bill Act, passed in 2025, more than doubled the Section 179 cap and made it a permanent, inflation-adjusted part of the tax code. Here are the 2026 numbers, per IRS Revenue Procedure 2025-32:

The rule	2026 number	What it means for you
Most you can write off	$2,560,000	You can deduct up to this much in equipment costs this year.
Spending level where it starts shrinking	$4,090,000	Spend more than this on equipment in one year, and your write-off drops $1 for every $1 over.
Spending level where it disappears	$6,650,000	At this level of spending, Section 179 is gone for the year.
Limit for certain large SUVs	$32,000	Some heavy SUVs are capped lower. Work trucks and cargo vans generally aren't.

Source: IRS Revenue Procedure 2025-32.

Unless your business spends millions on equipment this year, these caps won't affect you. A $3,000 crossover box or a $12,000 van shelving setup fits easily inside them.

The limit that matters more for small businesses is the business income limit: your Section 179 deduction can't exceed your business's taxable income for the year. Any amount you can't use carries forward to future years.

What truck equipment qualifies

Section 179 covers tangible business equipment, new or used, that you buy (or finance) and use more than 50% of the time for business. Most of the commercial equipment work trucks and vans run on fits that description:

Equipment	Typical use
Crossover, chest, side-mount and underbody tool boxes	Securing tools and parts on pickups and flatbeds
Combo transfer tank / tool boxes and auxiliary fuel tanks	Fueling equipment on job sites and farms
Ladder racks and contractor racks	Hauling ladders, pipe and lumber
Van shelving, bins and partitions	Organizing cargo vans like the Transit, ProMaster and Sprinter
Van ladders, roof racks and drop-down ladder racks	Roof access and overhead storage
Tonneau covers, truck caps and bed liners on work trucks	Weather and theft protection for cargo
Service bodies, flatbeds and dump inserts	Converting a pickup or chassis into a working unit
Lighting, light bars and safety equipment	Job-site visibility and compliance

The two rules that decide most cases

More than 50% business use. If the truck is used for business 80% of the time, you can generally expense 80% of the equipment's cost. At 50% or less, Section 179 is off the table for that equipment.

The weight of the vehicle it goes on. Equipment permanently installed on a vehicle is generally treated as part of that vehicle for depreciation purposes. That matters because:

Pickups and vans over 6,000 lbs. GVWR: think F-250/2500 and up, and most full-size cargo vans, generally qualify for the full Section 179 limit, so the equipment does too.
Light trucks and vans at 6,000 lbs. GVWR or less: these fall under the IRS passenger-auto depreciation caps. For 2026, first-year depreciation on these is capped at $20,300 with bonus depreciation, or $12,300 without, and that cap covers the vehicle and its add-ons combined.

You'll find the GVWR on the sticker inside the driver's door jamb.

What usually doesn't qualify

Equipment for a personal vehicle, or a truck used mostly for personal driving
Purely cosmetic items on a vehicle not used for business
Equipment bought from a close relative, or received as a gift or inheritance
Anything ordered in 2026 but not installed and ready to use until 2027 (more on that below)

Smaller purchases (a single bin kit or a set of tie-downs, for example) may be deductible outright as ordinary business expenses or under the IRS de minimis rule, without needing Section 179 at all. Your accountant can tell you which route fits.

"Before December 31" means installed and in use

This is where most year-end buyers get tripped up. To take the deduction on your 2026 return, the equipment has to be placed in service by December 31, 2026. The IRS treats something as placed in service when it's ready and available for its intended use, not when you order it, and not when you pay for it.

In practice:

A crossover box ordered December 15 but delivered January 6 counts for 2027, not 2026.
A van shelving kit sitting in its boxes in your shop on December 31 likely hasn't been placed in service.
A ladder rack installed and hauling ladders on December 30 counts for 2026.

Build in time for shipping and install

Heavy truck equipment often ships by freight, and some manufacturers build to order. Wait times can extend several additional business days during this time of year, especially on high-demand product lines.

A safe plan is to place orders by mid-to-late November, confirm lead times before you buy, and book or refer to our YouTube channel for installation guides.

Financed equipment still counts

You don't have to pay cash to take the deduction. Equipment bought with a loan or a financing plan generally qualifies for the full cost in the year it's placed in service, even though you're paying for it over time. That can mean your first-year tax savings outpace your first-year payments. True leases (as opposed to finance leases or $1 buyout arrangements) usually don't qualify, since you don't own the equipment.

Get your trucks ready before the deadline

Elite Truck carries the equipment work trucks and vans run on, from crossover and underbody tool boxes to ladder racks, combo fuel tanks, van shelving and partitions. Our USA-based team can check stock and lead times on specific part numbers so your order arrives in time to be installed before December 31.

Shop the full lineup at EliteTruck.com, call 855-919-2087, or email sales@elitetruck.com