Section 179 for Heavy Equipment in 2026: The Complete Deduction Guide

Last updated: April 2026

Section 179 of the IRS tax code lets you deduct the full purchase price of qualifying heavy equipment in the year you buy it — up to $2,560,000 for tax year 2026. That means a contractor who picks up a used excavator for $145,000 in October can write off the entire amount on their 2026 return, rather than depreciating it over five to seven years.

The One Big Beautiful Bill Act (signed July 4, 2025) supercharged these benefits. It more than doubled the Section 179 limit from the pre-2025 levels and permanently restored 100% bonus depreciation for property acquired after January 19, 2025. For anyone buying or financing heavy equipment, the tax math has never been more favorable.

This guide covers everything contractors, farmers, and fleet operators need to know: the 2026 limits, which equipment qualifies, how bonus depreciation stacks on top, and how to time purchases for maximum tax benefit.

What Are the Section 179 Limits for 2026?

The 2026 Section 179 deduction limit is $2,560,000, per Section179.org. That is up from $2,500,000 in 2025 and more than double the $1,220,000 limit in 2024. The phase-out threshold — the point where the deduction starts to decrease — is $4,090,000.

Here is how the phase-out works: if you place more than $4,090,000 of qualifying property into service during 2026, your Section 179 deduction reduces dollar-for-dollar by the excess. The deduction reaches zero at $6,650,000 in total purchases. Businesses spending below $4,090,000 get the full deduction amount without any reduction.

For most independent contractors and mid-size construction firms, that $2,560,000 ceiling covers the entire annual equipment budget. A company buying two used bulldozers, three skid steers, and a dump truck in a single year can likely deduct every dollar under Section 179 alone.

What Heavy Equipment Qualifies for Section 179?

Most tangible personal property used more than 50% for business qualifies, according to IRS Publication 946. The equipment can be new or used — it just needs to be new to your business. The key is that it must be purchased and placed in service within the same tax year.

Construction Equipment That Qualifies

• Excavators — all sizes from minis to 80-ton class
• Bulldozers — crawler dozers, wheeled dozers, all sizes
• Wheel loaders — compact through production class ( see pricing)
• Backhoes — all makes and models ( see pricing)
• Skid steers and compact track loaders ( see CTL pricing)
• Dump trucks — articulated and rigid frame
• Cranes, telehandlers, motor graders, trenchers
• Attachments — buckets, thumbs, breakers, augers, grapples

Farm Equipment That Qualifies

• Tractors — utility, row crop, and large-frame ( best tractors for small farms)
• Combines and harvesters
• Implements — planters, sprayers, tillage equipment, balers
• Grain bins, feed systems, irrigation equipment
• Single-purpose agricultural structures — livestock confinement, greenhouses (per Nationwide)

What Does NOT Qualify

• Land — never depreciable
• General-purpose buildings — offices, warehouses (some improvements qualify)
• Inventory — equipment bought to resell
• Equipment used less than 50% for business
• Property acquired from a related party — buying from family or a business you control

Section 179 vs. Bonus Depreciation: How They Stack

Section 179 and bonus depreciation are separate provisions that work together. Understanding the difference — and how to combine them — is how experienced fleet operators minimize their tax bills.

Sources: IRS Publication 946, Section179.org, BDO Tax Advisory.

The critical distinction: Section 179 cannot create a net operating loss. Your deduction is capped at your taxable business income for the year. Bonus depreciation has no such limit — it can push you into a loss that carries forward to future years. For businesses with uneven income, that difference matters.

A grading contractor based in Texas shared this scenario: they purchased $3.2 million in equipment in 2025, including four excavators and two dozers. They applied Section 179 to $2,500,000 of the cost and 100% bonus depreciation to the remaining $700,000 — deducting the full $3.2 million in year one. Their CPA estimated the combined tax savings at approximately $800,000.

How Much Can You Save? Real Equipment Examples

Tax savings depend on your effective tax rate. For the examples below, we use a 25% combined federal and state rate — a reasonable estimate for most small to mid-size contractors and farm operations, per SBA data on small business tax brackets. Your actual rate may be higher or lower.

Section 179 Tax Savings by Equipment Type

*Estimated savings at 25% combined effective tax rate. Actual savings vary by entity type, income level, and state. Equipment prices reflect typical used market values per HeavyDutyYard pricing data.

Look at the bulldozer row: a $225,000 D6-class machine generates an estimated $56,250 in tax savings. That is roughly equivalent to three years of maintenance costs on that machine. The tax benefit effectively pays for the upkeep.

Section 179 and Bonus Depreciation Limits: 2021-2026

The jump between 2024 and 2025 is dramatic. The One Big Beautiful Bill Act more than doubled the Section 179 ceiling and restored 100% bonus depreciation that had been phasing down under the original Tax Cuts and Jobs Act schedule. Here is the full comparison, sourced from IRS Publication 946 and BDO OBBBA analysis.

Year-by-Year Deduction Limits

*2025 bonus depreciation: 100% restored retroactively to Jan 20, 2025 by the One Big Beautiful Bill Act. Property acquired before that date follows the prior phase-out (40% for 2025). Sources: IRS Rev. Proc., BDO, Grant Thornton.

Can You Use Section 179 on Used Equipment?

Yes — and this is the point that matters most for anyone shopping the used heavy equipment market. Both new and used equipment qualify for the full Section 179 deduction, as confirmed in IRS Publication 946. The only requirement is that the equipment is new to your business.

This means a 2019 Cat 320 with 4,500 hours that you buy at a Ritchie Bros auction for $118,000 is fully deductible — same as a brand-new machine from a dealer. The tax code does not penalize you for buying used.

For businesses focused on cost control, this creates a powerful combination: used equipment already costs 30-50% less than new (see our depreciation guide), and Section 179 lets you deduct the full purchase price in year one. The effective after-tax cost of a used machine drops significantly.

How to Time Equipment Purchases for Maximum Tax Benefit

Timing is everything with Section 179. The equipment must be placed in service by December 31, 2026 to qualify for the 2026 tax year. “Placed in service” means the machine is delivered, set up, and ready for use — not just ordered or paid for.

Year-End Purchase Checklist

1. Project your taxable income. Section 179 cannot exceed your business income for the year. If you expect $200,000 in net income, cap your Section 179 election at $200,000. Any excess can be carried forward to future years.
2. Account for delivery lead times. Used equipment from a dealer lot might ship in 1-2 weeks. Auction purchases can take 2-4 weeks for transport depending on distance. Budget this time if you are buying in November or December. Our shipping cost guide covers typical timelines and freight costs by equipment size.
3. Finance before delivery if needed. Equipment financed under a capital lease or loan qualifies for Section 179 in the year the equipment is placed in service — not the year you finish paying for it. A $200,000 excavator financed with $20,000 down still generates a $200,000 deduction in year one per Section179.org.
4. Document the placed-in-service date. Take photos, log the delivery receipt, and record the date the machine is operational. If the IRS questions the deduction year, your documentation is the defense.
5. Coordinate with your CPA before purchasing. Entity structure (sole prop, LLC, S-Corp, C-Corp) affects how Section 179 flows to your personal return. A quick call before signing can prevent surprises in April.

A farm operator in Iowa described this approach: they typically buy one piece of major equipment each December — a tractor in one year, a combine attachment the next. They time purchases so the machinery arrives and is operational before December 31, deducting the full cost in year one. Over five years, they estimated $180,000 in cumulative tax savings using this strategy.

5 Common Section 179 Mistakes Equipment Buyers Make

These mistakes come up repeatedly in equipment transactions, based on CPA guidance published by Block Advisors and DHJJ CPAs.

1. Buying equipment that arrives in January. Ordered in December, delivered January 3 — the machine does not qualify for the prior tax year. Placed in service means operational, not ordered.
2. Exceeding taxable income with Section 179. If your net business income is $300,000 and you elect $500,000 in Section 179, the excess $200,000 carries forward. It does not create a current-year loss. Bonus depreciation can create a loss; Section 179 cannot.
3. Forgetting the 50% business use test. A pickup truck used 40% for personal driving and 60% for business qualifies — but only for the business-use portion. A machine used less than 50% for business does not qualify at all.
4. Missing the Form 4562 election. Section 179 requires an active election on IRS Form 4562. Unlike bonus depreciation (which is automatic), you must file the form or you lose the deduction for that year.
5. Not consulting a CPA on entity structure. An S-Corp owner who also has W-2 income from the business faces different limits than a sole proprietor. The Section 179 deduction passes through to the individual return, and the income limitation applies at the individual level.

How Equipment Financing Works with Section 179

One of the most powerful aspects of Section 179: you can finance the equipment and still deduct the full purchase price in year one. A $200,000 wheel loader purchased with $20,000 down and financed at 7% over 60 months generates a $200,000 Section 179 deduction in the year the machine is placed in service — even though you have only paid $20,000 out of pocket.

The math is striking. At a 25% effective tax rate, that $200,000 deduction saves $50,000 in taxes. Your initial cash outlay was $20,000 for the down payment. The tax refund exceeds the down payment by $30,000 — meaning the government effectively subsidized your equipment purchase beyond what you put down.

Not all leases qualify. The lease must be structured as a capital lease (finance lease) where you own the equipment at the end of the term or have a bargain purchase option. True operating leases — where you return the equipment — typically do not qualify. Our equipment financing guide covers the differences between lease structures in detail.

For a deeper analysis on whether renting or buying makes more sense for your situation, consider both the Section 179 benefit (which favors buying) and your utilization rate (which may favor renting for low-use machines).

Frequently Asked Questions About Section 179 for Heavy Equipment