2026 Section 179 Deduction: What Heavy Equipment Buyers Need to Know

Section 179 lets a business deduct the full purchase price of qualifying equipment in the year it's placed in service, instead of depreciating it over five, seven, or more years. For companies buying dozers, excavators, loaders, dump trucks, or semi-tractors, this is one of the most direct ways to lower a tax bill in the same year the equipment goes to work.

Here's what applies for the 2026 tax year.


2026 Dollar Limits

  • Maximum deduction: $2,560,000
  • Phase-out threshold: starts once total qualifying purchases exceed $4,090,000; the deduction is reduced dollar-for-dollar above that
  • Fully phased out: at $6,650,000 in total qualifying purchases

These limits and the phase-out structure were made permanent under the One Big Beautiful Bill Act and are now adjusted annually for inflation. For most independent operators and small-to-midsize fleets, the $4,090,000 phase-out threshold is well above annual spend, so the full $2,560,000 deduction is available.


What Counts as Qualifying Equipment

Section 179 covers new and used equipment, as long as it's new to your business and placed in service during the tax year. For a heavy equipment operation, this generally includes:

  • Dozers, excavators, and compact track loaders
  • Articulated dump trucks and standard dump trucks
  • Semi-tractors and trailers
  • Specialty equipment such as scrapers and slingers
  • Attachments and other machinery used more than 50% for business

Used equipment qualifies on the same terms as new equipment, which matters for buyers working the secondary market.


Heavy Vehicles vs. Passenger Vehicles

The deduction limit depends on the vehicle's gross vehicle weight rating (GVWR):

  • Under 6,000 lbs GVWR: capped at $12,200 for 2026 (up to $20,200 combined with bonus depreciation)
  • 6,001–14,000 lbs GVWR (heavy SUVs): capped at $32,000
  • Over 14,000 lbs GVWR, or vehicles modified for nonpersonal use: no Section 179 cap — full expensing is available

Most equipment in a heavy equipment brokerage — dump trucks, semi-tractors, articulated haulers — falls into that last category and is not subject to a vehicle-specific dollar cap.

Business use must exceed 50% to qualify, and the deduction is prorated based on actual business-use percentage. Vehicles used partly for personal purposes need mileage or usage logs to support the claim.


Section 179 and Bonus Depreciation Together

For 2026, bonus depreciation is 100% for qualifying property placed in service after January 19, 2025. The two work in sequence: Section 179 is applied first, then bonus depreciation covers the remaining basis.

Example: a $90,000 piece of equipment with no vehicle-specific cap can be fully expensed in year one — Section 179 and bonus depreciation together cover the full purchase price, with no dollar limit beyond the overall $2,560,000 Section 179 cap.

For heavy SUVs capped at $32,000 under Section 179, bonus depreciation applies to the remaining basis with no additional cap — so a $90,000 heavy SUV could still be fully expensed in year one: $32,000 under Section 179, the remaining $58,000 under bonus depreciation.


Basic Requirements

  • Equipment must be placed in service (delivered and ready for use) during the 2026 tax year — not just ordered or paid for
  • Business use must exceed 50%
  • The deduction is limited to taxable income from the active conduct of the business; it cannot create a net loss
  • New and used equipment both qualify, provided it's new to the buyer

Bottom Line for Equipment Buyers

Timing matters. Equipment has to be in service by year-end to count for that tax year, not just under contract. For anyone planning a fourth-quarter purchase, delivery and in-service dates should be confirmed with the seller and documented.

These figures reflect current 2026 guidance and are subject to IRS confirmation. Every business's situation is different — confirm eligibility and exact deduction amounts with a CPA or tax advisor before making a purchase decision based on Section 179.

Disclaimer: This article is for general informational purposes only and does not constitute tax advice. We are not tax advisors, CPAs, or attorneys. Section 179 rules are complex and depend on individual business circumstances. Consult a qualified tax professional before making any decisions based on this information.