Section 179 for Used Trucks and Trailers
October 22, 2026 · 5 min read · Equipment Funding Network
Yes, used trucks and trailers can qualify for Section 179. The equipment must be bought, not from a related person, used more than half for business, and placed in service in the tax year; for 2026 the overall limit is $2,560,000, phasing out above $4,090,000 of Section 179 property placed in service (IRS Revenue Procedure 2025-32).
This article explains how the federal rules generally work. It is not tax advice, and EFN does not give tax advice. Ask your tax professional or CPA how Section 179 applies to your business before you buy.
Why used qualifies
Section 179 does not ask whether the equipment is new. IRS Publication 946 asks whether you acquired it by purchase, and whether you bought it from a related person or a business you control. A used Class 8 tractor from a dealer, a dump truck from an auction or a trailer from another carrier can all qualify. Bonus depreciation can also apply to certain used property; one of its conditions is that you had not used the property before you bought it.
Heavy trucks, pickups and the SUV cap
- Trucks rated above 14,000 pounds gross vehicle weight, such as Class 8 tractors, most dump trucks and many box trucks, are outside the SUV cap.
- Sport utility vehicles rated more than 6,000 and not more than 14,000 pounds are capped at $32,000 for 2026.
- Publication 946 excludes some vehicles in that band from the cap, including a pickup with a cargo area of at least six feet that is not readily reachable from the cab.
- Trailers are equipment, not passenger vehicles, so the vehicle caps do not apply to them.
Private sales, auctions and related parties
A truck bought from an unrelated private seller or at auction can qualify. A truck bought from your spouse, parent or child, or from a company you control, generally cannot. Keep the bill of sale, the title transfer and the payment record, because those show it was a purchase and when it happened.
In service means ready to work
For a truck or trailer, placed in service means it is yours and ready and available to do its job in your business, not still on the seller's lot or waiting on transport. Titled equipment adds title, registration and lien work, and a private sale adds a lien payoff on the seller's side. If you want the deduction this year, start the financing several weeks before year end.
Trade-ins and selling later
Since 2018, trading in a truck is generally treated for tax purposes as selling the old truck, and the sale can bring back depreciation you already took as income. Selling a truck you wrote off, or letting its business use fall to 50 percent or less, can do the same. Ask your tax professional how a trade-in changes the numbers before you sign the deal.
How financing fits
Financing does not stop the deduction. Section 179 follows the cost of the truck, including the part you borrow, as long as the financing makes you the owner, as a loan or equipment finance agreement does. A true lease generally does not; you deduct the payments instead. The deduction lowers taxable income, and you still make every payment, so ask your CPA what it is worth to you this year.
EFN matches truck and trailer buyers with lenders whose own criteria fit the deal, including lenders that finance used trucks and private-party sales. It is not a lender and does not give tax advice. EFN's service is free to you, and the first step is a soft credit pull that does not affect your score.
Common follow-up questions
Can I take Section 179 on a used semi truck?
Generally yes, if you bought it from an unrelated seller, use it more than half for business and put it in service in the tax year. Your tax professional can confirm it for your business.
Is a heavy truck subject to the SUV limit?
No. The $32,000 cap for 2026 applies to SUVs rated more than 6,000 and not more than 14,000 pounds. Trucks rated above 14,000 pounds are outside it.
Does a trailer qualify for Section 179?
A trailer used in your business can qualify like other equipment, new or used, and the vehicle caps do not apply to it. Ask your CPA to confirm.
Can I take Section 179 on a truck bought from a family member?
Generally no. Property bought from a spouse, parent, child or a business you control does not qualify. Ask your tax professional about your situation.