Trucking Company Equipment Depreciation: Deduct Your Entire Fleet

Trucking is one of the few industries where equipment spend routinely exceeds the Section 179 cap, which changes the planning conversation entirely. For a fleet, the question is not whether to elect Section 179. It is how to use bonus depreciation without creating a recapture problem three years later.

The Recovery Periods

Under Rev. Proc. 87-56, over-the-road tractor units used in a trade or business are 3-year property. Trailers and trailer-mounted containers are 5-year property. General-purpose trucks and most support vehicles are 5-year. Shop equipment and yard assets typically land at 7 years.

The three-year life on tractors is unusual and worth noting. Even without bonus depreciation, a tractor recovers extremely fast under 200% declining balance. With 100% bonus permanent under the OBBBA, it recovers in one year. Full tables in MACRS recovery periods by asset type.

Why Fleets Skip Section 179

The 2026 Section 179 limit is $1,250,000, with phase-out beginning at $3,130,000 of total equipment placed in service. A fleet adding eight tractors and six trailers is often past both numbers before the year is out. Once total placements exceed roughly $4.38 million, the Section 179 deduction is gone entirely.

Bonus depreciation has no cap, no phase-out, and no taxable income limitation. It can create a net operating loss that carries forward. For a fleet, it does everything Section 179 does and removes every constraint that matters. Section 179 remains useful only for state conformity purposes in states that decouple from bonus.

What Qualifies Beyond the Trucks

Sleeper and day cab tractors, dry vans, flatbeds, step decks, tankers, and refrigerated trailers. Reefer units and APUs. Telematics hardware, ELDs, dash cams, and the fleet management platform. Shop equipment, lifts, tire machines, diagnostic tools, and fuel islands. Yard trucks. Terminal and warehouse racking that is not structural.

Owner-operators buying a single truck are in exactly the same position as a fleet, just at a different scale, and often benefit more because the deduction lands against Schedule C or K-1 income taxed at a high marginal rate plus self-employment tax exposure.

The Cash Math on a Fleet Purchase

A carrier acquiring $1.2 million of tractors and trailers at 10% down and 3% closing is $156,000 out of pocket. The first-year bonus depreciation deduction is the full $1.2 million. At a 35% blended rate that is $420,000 in tax savings against $156,000 of cash, with the equipment producing revenue miles from week one. The model is on the equipment leasing page.

The Recapture Problem Fleets Actually Face

Here is what makes trucking different. Fleets cycle equipment. A tractor bought this year is often sold or traded in three to five years. Because it was fully expensed, its adjusted basis is at or near zero, so essentially the entire sale price is recaptured as ordinary income under IRC Sec. 1245.

Sell a fully expensed tractor for $85,000 and you have $85,000 of ordinary income. Do that with fifteen units in the same year and you have created a $1.275 million income event.

Since the 2017 Tax Cuts and Jobs Act eliminated like-kind exchange treatment for personal property, a trade-in does not defer this. The trade allowance is proceeds, and the gain is recognized immediately.

The management strategy is straightforward and requires planning: pair disposition years with acquisition years. A fleet that sells fifteen units and buys eighteen in the same tax year offsets the recapture with new bonus depreciation. A fleet that sells in Year 1 and buys in Year 2 has a large tax bill in Year 1 and a large deduction it cannot fully use in Year 2. The trucks are the same either way; the timing is worth six figures.

Entity Structure and the Per Diem Interaction

Most carriers operate as S-Corps or partnership-taxed LLCs. The S-Corp basis limitation under IRC Sec. 1366(d) is a real constraint on a debt-financed fleet purchase, because corporate-level equipment debt does not create shareholder basis. A partnership-taxed LLC includes qualified entity-level debt in partner basis, which for a heavily financed fleet is frequently the cleaner structure. See entity structure considerations.

Separately, many carriers hold equipment in a distinct entity that leases it to the operating company. Done properly with arm's-length pricing and real documentation, this isolates the assets from operating liability and can improve the basis picture. Done casually, it invites a reallocation under IRC Sec. 482.

The In-Service Date on a Truck

A tractor is placed in service when it is ready and available for use in the business—typically when it is titled, plated, insured, and dispatchable. A unit sitting on the dealer lot on December 31 awaiting DOT inspection, plating, or upfit is not placed in service.

Keep the bill of sale, title application, IRP registration, insurance binder, and the first dispatch record. For a fleet claiming a seven-figure deduction, the in-service documentation is the audit file.

Frequently Asked Questions

What is the depreciation life of a semi truck?

Over-the-road tractor units are 3-year MACRS property under Rev. Proc. 87-56. Trailers, including refrigerated trailers, are 5-year property. With 100% bonus depreciation permanent under the OBBBA, both can be fully deducted in the first year regardless of the recovery period.

Should a trucking company use Section 179 or bonus depreciation?

Bonus depreciation, in almost every case. The 2026 Section 179 cap of $1,250,000 and its $3,130,000 phase-out threshold are easily exceeded by fleet purchases, and Section 179 cannot create a loss. Bonus depreciation has no cap, no phase-out, and no income limitation. Section 179 may still be used to manage state addbacks in states that decouple from bonus.

Can an owner-operator deduct a truck purchase?

Yes. An owner-operator who buys or capital-leases a tractor can deduct the full cost in the first year under bonus depreciation or Section 179, subject to the business use requirement. The deduction reduces Schedule C or pass-through income and therefore reduces both income tax and self-employment tax exposure.

What happens when I trade in a fully depreciated truck?

Like-kind exchange treatment no longer applies to personal property, so a trade-in is a taxable disposition. The trade allowance is treated as sale proceeds, and because the unit was fully expensed, essentially the entire amount is ordinary income under IRC Sec. 1245. Pairing the disposition with a new acquisition in the same tax year offsets it.

Can I hold the trucks in a separate entity and lease them to my carrier?

Yes, and many fleets do it for liability isolation and basis reasons. The arrangement has to be real: a written lease, arm's-length rates supported by market data, and actual payments. Otherwise IRC Sec. 482 permits the IRS to reallocate income and deductions between commonly controlled entities.

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This article is for informational purposes only and does not constitute legal or tax advice. Consult a qualified tax professional regarding your specific circumstances. AE Tax Advisors, 935 Lake Elmo Dr, Suite B, Billings, MT 59105. Phone: (631) 614-5762.