Section 179 for Heavy Equipment: 2026 Limits, Rules, and the December 31 Deadline

Not tax advice. Talk to your CPA.

You had a good year. Now the tax bill is coming. December 31 is not a flexible deadline, and equipment takes time to deliver and put into service. If you are thinking about buying a crusher, tub grinder, trommel screen, or air burner before year-end, the Section 179 rules are the first thing to understand.


Call 770-433-2670 to get the numbers on a specific machine.


What the Section 179 Deduction Actually Means for Equipment Buyers

Normal depreciation spreads the cost of a machine across five to seven years. Section 179 lets you deduct the full purchase price in the year you put the machine into service. One machine. One year. Full deduction.

The practical effect: a $200,000 machine at a 30% effective tax rate returns $60,000 in tax savings in year one. You still paid $200,000 for the machine. But you reduced your taxable income by $200,000, and that reduction shows up as real money at tax time.

The deduction does not exceed your taxable business income for the year. If your business earned $150,000, you cannot deduct $200,000 under Section 179. Your CPA can model the actual number for your situation.

Not tax advice. Talk to your CPA.


2026 Section 179 Limits

The IRS adjusts the Section 179 limits annually for inflation. For 2026:

  • Deduction cap: $2,560,000
  • Phase-out threshold: $4,090,000 in total equipment purchases
  • Fully phased out at: $6,650,000
  • Income requirement: Cannot exceed net taxable business income
  • Form: Elected on IRS Form 4562


The phase-out works on a dollar-for-dollar basis. Every dollar of equipment purchases above $4,090,000 reduces the maximum deduction by one dollar. At $6,650,000 in total purchases, the Section 179 deduction is gone entirely.

Most contractors are well under the phase-out threshold. If your total equipment purchases this year are under $4 million, the full $2,560,000 deduction cap applies.


Bonus depreciation: For property acquired after January 19, 2025, 100% bonus depreciation may also apply. Bonus depreciation and Section 179 work together in some cases. Your CPA can determine which combination produces the best result for your situation.


What Equipment Qualifies

Section 179 covers a broad range of business equipment. For contractors in land clearing, demolition, recycling, and aggregate production, the qualifying categories include:

  • New equipment: Yes. Standard qualification.
  • Used equipment: Yes, if the machine is new to the buyer. Equipment you already owned and put back into service does not qualify.
  • Financed equipment: Yes. Equipment loans and $1 buyout financing structures qualify. The buyer is treated as the owner for tax purposes. Full deduction is based on the full purchase price, not the down payment.
  • Operating leases: May not qualify. Confirm with your CPA.


Examples of GCS equipment that qualifies when new to the buyer:


Both new and used machines from our inventory qualify under the same rules. That is a detail many dealers miss. A used tub grinder you buy from us this year qualifies for the same deduction as a new one.


The December 31 Rule (Most Contractors Get This Wrong)

The deduction counts in the year the machine is placed in service. Not ordered. Not paid for. In service.

In service means delivered to the job site, assembled, test-run, and ready to work. If the machine arrives on your property December 31 but is not set up and operational, it may not qualify for the 2026 deduction. Your CPA will ask for documentation.

Heavy equipment takes time. Delivery logistics, site prep, assembly, and transportation all affect the timeline. Ordering in November for a December delivery is realistic. Waiting until mid-December to start the process is not.


Download the GCS Section 179 Delivery Checklist. It includes everything your CPA needs to document the in-service date: signed delivery acceptance, dated site photos, itemized invoice, and a business-use confirmation. Free download.


How Financing Changes the Math

A lot of contractors assume Section 179 is only for cash purchases. It is not. Financed equipment qualifies for the full deduction in the year you put it into service.

Example: You finance a $200,000 machine. Your year-one Section 179 deduction is $200,000, not $20,000. The deduction is based on the full purchase price. The financing structure — what you paid out of pocket in 2026 — does not reduce the deduction.

GCS offers 90-day payment deferral through financing. Take delivery in December 2026. First payment hits in 2027. You get the deduction in 2026 before the first check clears.

The Fed raised rates in 2026. Waiting until spring to finance the same machine means financing at a higher rate. Same machine. More money. No reason for it.


FAQ

Can I deduct a financed machine under Section 179?

Yes. Equipment loans and $1 buyout financing qualify. Operating leases may not. The full purchase price is deductible, not just the amount paid. Confirm the financing structure with your CPA.

What documents does my CPA need?

Itemized invoice with serial number and purchase price. Signed delivery acceptance with date. Dated photos of the machine on your site. Financing agreement if applicable. A note confirming business-use percentage. The GCS Section 179 Delivery Checklist covers all of it.

Does the machine need to be paid in full by December 31?

No. It needs to be in service by December 31. Payment timing does not affect the in-service date or the deduction.

What happens if I miss the deadline?

The deduction shifts to next year — or does not apply at all if your taxable income situation changes. Missing December 31 is not a workaround. It is a loss.

Does Section 179 apply to financing when the first payment is in January?

Section 179 and Equipment Financing

GrinderCrusherScreen has sold and delivered heavy equipment since 1973. We know what the paperwork looks like and what your CPA needs. We have helped contractors close Section 179 purchases every Q4 for decades.


Three steps:

  • Ask your CPA how much a Section 179 deduction saves you this year.
  • Call us and get the real numbers: machine price, write-off, and monthly payment.
  • Take delivery by December 31. First payment deferred to 2027 with financing.


Call 770-433-2670 or email Sales@grindercrusherscreen.com

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Not tax advice. Talk to your CPA.