2026 Section 179 Deduction Rules

Not tax advice. Consult your tax advisor about your situation. Figures are for tax years beginning in 2026.

Overview

Section 179 of the Internal Revenue Code allows businesses to elect to expense the full cost of qualifying depreciable property in the year it is placed in service, rather than recovering the cost through depreciation over several years. This is particularly valuable for automotive businesses that purchase vehicles, diagnostic equipment, lifts, tools, and shop machinery.

For tax years beginning in 2026, the One Big Beautiful Bill Act (Public Law 119-21, signed July 4, 2025) significantly increased the base limits, and Revenue Procedure 2025-32 provides the inflation-adjusted figures. In addition, 100% bonus depreciation under Section 168(k) is now permanent for qualifying property acquired and placed in service after January 19, 2025.

2026 Federal Section 179 Limits

The following limits apply to tax years beginning in 2026 (per IRS Revenue Procedure 2025-32):

How the phase-out works: For every dollar of qualifying property placed in service above $4,090,000, the $2,560,000 maximum is reduced by one dollar. At $6,650,000 of total qualifying property, the Section 179 deduction is completely eliminated for the year.

Business Income Limitation

The Section 179 deduction cannot exceed the taxpayer’s aggregate taxable income from the active conduct of any trade or business during the year (computed without regard to the Section 179 deduction itself). Any excess is carried forward indefinitely and can be used in future years when there is sufficient business income.

Qualifying Property for Automotive Businesses

Section 179 property generally includes tangible personal property acquired by purchase for use in the active conduct of a trade or business. Both new and used property can qualify if it is “new to you” and acquired in an arm’s-length transaction. Examples relevant to automotive businesses include:

• Service vehicles, work trucks, vans, and SUVs (subject to vehicle-specific rules below)
• Vehicle lifts, alignment racks, and tire machines
• Diagnostic equipment, scan tools, and computer systems
• Shop tools, air compressors, and welding equipment
• Office furniture, computers, and off-the-shelf software
• Certain qualified real property improvements (roofs, HVAC, fire protection, security systems)

Business-use requirement: The property must be used more than 50% for business in the year it is placed in service. The deduction is limited to the business-use percentage.

Vehicle Rules Critical for Automotive Businesses

Vehicles are the most complex area of Section 179 for automotive businesses. Treatment depends primarily on the vehicle’s Gross Vehicle Weight Rating (GVWR) and design characteristics. The GVWR is the manufacturer’s maximum loaded weight rating, typically found on a label inside the driver’s door.

Vehicle Categories and 2026 Treatment

Exceptions to the $32,000 SUV Cap

The $32,000 Section 179 limitation does not apply to vehicles that meet any of the following design tests (IRC §179(b)(5)(B)):

• Designed to seat more than 9 persons behind the driver’s seat
• Equipped with a cargo area of at least 6 feet in interior length that is open (or designed for use as an open area but enclosed by a cap) and not readily accessible from the passenger compartment
• Certain enclosed cargo vehicles with no seating behind the driver and no body section protruding more than 30 inches ahead of the windshield

Practical tip for automotive businesses: Many full-size pickups (Ford F-150/F-250/F-350, Chevrolet Silverado, Ram 1500/2500, Toyota Tundra) and certain cargo vans can avoid the SUV cap when they meet the cargo-bed length and accessibility tests. Always verify the GVWR sticker and vehicle design specifications.

2026 Luxury Auto Depreciation Limits (§280F)

These limits apply to passenger automobiles (including trucks and vans) with a GVWR of 6,000 pounds or less. They cap the total of Section 179 + bonus depreciation + regular MACRS depreciation. Source: IRS Revenue Procedure 2026-15.

These amounts are reduced proportionally if business use is less than 100%.

Coordination with 100% Bonus Depreciation

Section 179 is applied first. Any remaining eligible basis after the Section 179 election (and after applying any SUV cap) is generally eligible for 100% bonus depreciation under Section 168(k), which was made permanent by the One Big Beautiful Bill Act for property acquired and placed in service after January 19, 2025.

Key differences: Bonus depreciation has no dollar cap and no taxable-income limitation (it can create a net loss). Section 179 has both. Taxpayers can elect Section 179 on selected assets and allow bonus depreciation to apply to the remainder of a class of property (unless they elect out of bonus).

Placed-in-Service Requirement and Deadline

To claim Section 179 or bonus depreciation for 2026, the property must be placed in service by the end of the tax year (December 31, 2026, for calendar-year taxpayers). “Placed in service” means the property is ready and available for its intended business use — not merely ordered, purchased, or delivered.

Financing does not disqualify property. Purchases and many non-tax capital leases qualify if the taxpayer is treated as the owner for tax purposes. Operating leases generally do not.

Compliance, Documentation, and Recapture

• Business-use records: Maintain contemporaneous mileage or usage logs, especially for vehicles. Business use must exceed 50% in the year of election.
• Title and ownership: Title vehicles in the business name when possible.
• GVWR verification: Photograph the manufacturer’s GVWR label and retain vehicle specifications.
• Recapture risk: If business use drops to 50% or below in a later year (or the property is disposed of), previously claimed Section 179 and bonus depreciation may be subject to recapture as ordinary income.
• Election: Made on Form 4562, Depreciation and Amortization, filed with a timely return (including extensions).

State Conformity Considerations

Many states do not fully conform to the federal Section 179 limits or to 100% bonus depreciation. For example, California allows a much lower Section 179 limit ($25,000 for 2026, phasing out above $200,000 of purchases) and does not allow bonus depreciation. Always check state-specific rules, as federal and state depreciation differences create timing differences that must be tracked.

Illustrative Example for an Automotive Business

An auto repair shop places the following property in service in 2026, all used more than 50% for business, and has sufficient taxable income:

• $85,000 heavy-duty pickup (GVWR > 6,000 lbs, 6-ft cargo bed meeting design test) — full Section 179 available
• $62,000 SUV (GVWR 7,200 lbs) — $32,000 Section 179 + 100% bonus on remaining $30,000 business basis
• $45,000 vehicle lift and $28,000 diagnostic equipment — full Section 179 available

Total qualifying property is well below the $4,090,000 phase-out threshold, so the full available Section 179 amounts can be elected (subject to the SUV cap and overall income limitation). Remaining eligible basis after Section 179 receives 100% bonus depreciation.

Common Eligible Models: Ford, Chevrolet, GMC, and Toyota (2026)

The following popular models from Ford, Chevrolet, GMC, and Toyota commonly meet the GVWR threshold (>6,000 lbs) for enhanced Section 179 treatment in 2026. Eligibility is configuration-specific. Always verify the exact GVWR on the manufacturer’s certification label (door jamb) for the specific vehicle, trim, cab, bed, and options. Bed length determines whether a pickup avoids the $32,000 SUV cap.

Detailed Look: Ford Bronco, F-150, and Transit

These three popular Ford models are frequently asked about for Section 179. Treatment depends on specific configuration. Always verify the door-jamb GVWR label.

Critical reminder: GVWR and design vary by model year, trim, cab style, bed length, engine, 2WD/4WD, and options. The IRS uses the manufacturer’s certified GVWR on the vehicle’s label—not curb weight or brochure claims. Photograph the label and consult a tax professional before purchase.