Cost Segregation for Cannabis Cultivation Facilities (2026)

Cannabis facilities are equipment dense and reclassify heavily, commonly 45% to 60% of depreciable basis. Lighting, HVAC and dehumidification, fertigation, extraction, and environmental controls dominate the build.

But for a plant-touching operator, the ordinary cost segregation analysis does not apply, because IRC Sec. 280E disallows deductions and credits for a trade or business trafficking in controlled substances. Depreciation is a deduction. The question is whether it can reach the return another way.

What 280E Actually Disallows

IRC Sec. 280E denies any deduction or credit for amounts paid or incurred in carrying on a trade or business consisting of trafficking in controlled substances within Schedule I or II of the Controlled Substances Act.

Marijuana remains a Schedule I substance under federal law regardless of state legalization, and courts have consistently applied 280E to state-licensed operators.

What 280E does not reach is cost of goods sold. Gross income for a business selling goods is receipts less cost of goods sold, and 280E operates on deductions from gross income rather than on the computation of gross income itself. Reducing gross income by COGS is constitutionally required and is not a deduction.

That distinction is the entire tax planning universe for a plant-touching cannabis business.

Depreciation Through Cost of Goods Sold

For a producer, depreciation on assets used directly in production can be included in inventoriable costs under the rules of IRC Sec. 471 and the associated regulations, flowing into cost of goods sold as inventory is sold.

That means depreciation on cultivation equipment, grow room build-out, environmental systems, and the production portion of the facility may reach the return through COGS even though it could not be claimed as a deduction.

Depreciation on non-production assets, retail dispensary build-out, office space, and administrative equipment, is a deduction disallowed by 280E and does not reach the return at all.

The allocation between production and non-production is therefore the central issue, and it is exactly what a component-level cost segregation study produces.

The Tax Court's decision in Patients Mutual Assistance Collective Corp. v. Commissioner constrains how far a reseller can push inventoriable costs, and the analysis differs meaningfully between a producer and a retailer. Producers have substantially more room.

Why Acceleration Still Matters

Under an inventory approach, depreciation included in inventoriable costs is recovered as inventory is sold rather than in the year incurred. For a cultivator with high turnover, that lag is short.

Accelerating depreciation through a cost segregation study increases the amount flowing into inventoriable costs in the early years, which increases COGS and reduces taxable income sooner.

Whether bonus depreciation under IRC Sec. 168(k) is included in inventoriable costs requires care. The interaction between accelerated tax depreciation and the inventory capitalization rules is not intuitive, and the position taken should be documented and consistent.

For a plant-touching operator, this is the difference between a study that reduces tax and a study that produces a number with nowhere to go.

What Reclassifies in a Cultivation Facility

Lighting systems including fixtures, ballasts, controls, and light movers are five-year property. On a large cultivation facility this alone is substantial.

HVAC and dehumidification serving grow rooms is process equipment rather than building comfort systems. Under the functional analysis reflected in Treasury Regulation Sec. 1.48-1(e)(2), systems serving the production environment classify with that function. The dedicated electrical service, switchgear, and distribution feeding them follow.

Fertigation and irrigation systems, reservoirs, dosing equipment, reverse osmosis and water treatment, and the distribution piping serving grow rooms are equipment.

Environmental controls, CO2 supplementation, sensors, and automation systems are five-year property.

Benching, racking, vertical grow systems, and rolling tables are equipment.

Extraction equipment, its dedicated ventilation, and the C1D1 rated enclosures housing it are equipment.

Security systems, required at a level far exceeding ordinary commercial buildings by state regulation, are five-year property along with their cabling.

Sealed room construction, vapor barriers, and specialty wall and ceiling systems in grow rooms are a closer question and should be analyzed rather than assumed either way.

Real Estate Ownership Is a Common Structure

Many cannabis operators separate the real estate into a non-plant-touching entity that leases to the licensed operator.

The property entity is not trafficking in controlled substances, so 280E does not apply to it. It deducts depreciation, interest, and operating costs normally, and a cost segregation study on the building produces an ordinary deduction.

The rent it receives is income, and the operator's rent expense is subject to 280E unless it can be included in inventoriable costs, which for production space it often can be.

This structure is common and is not itself aggressive, but it must be genuine: separate ownership, arm's length rent supported by market data, and real substance. Rent set to strip income from the operating entity invites adjustment under IRC Sec. 482.

Self-rental rules under Treasury Regulation Sec. 1.469-2(f)(6) also apply where ownership overlaps, and the passive activity treatment of the property entity's loss should be resolved before the study.

Worked Example: Cultivation Facility

An operator builds a 42,000 square foot indoor cultivation facility for $14,600,000 including land. Land is $1,400,000, leaving $13,200,000 depreciable.

A study identifies five-year property of $6,732,000 (51%), covering lighting, grow room HVAC and dehumidification with dedicated electrical, fertigation, environmental controls, benching, extraction, and security. Fifteen-year land improvements are $792,000 (6%). Structure is $5,676,000 (43%).

The study further allocates each component between production and non-production space, identifying 87% of the reclassified basis as directly attributable to production.

That production portion is included in inventoriable costs under IRC Sec. 471 and reaches the return through cost of goods sold as inventory is sold. The 13% attributable to office and administrative space is a deduction disallowed under 280E.

Without the component-level allocation, the operator would have had no defensible basis for including any specific amount in inventoriable costs, and the entire deduction would have been at risk.

Frequently Asked Questions

Can a cannabis business claim depreciation?

Not as a deduction. IRC Sec. 280E disallows deductions for a business trafficking in controlled substances. But depreciation on assets used directly in production can be included in inventoriable costs under IRC Sec. 471 and reach the return through cost of goods sold, which 280E does not reach.

Is cost segregation worthwhile for a cannabis operator?

Yes, but for a different reason than for other businesses. The component-level allocation between production and non-production assets is what makes the inventoriable cost position defensible. Without it, there is no supportable basis for the amounts included in COGS.

What percentage does a cultivation facility reclassify?

Commonly 45% to 60% of depreciable basis. Lighting, grow room HVAC and dehumidification with dedicated electrical, fertigation, environmental controls, benching, extraction, and regulatory-driven security systems all qualify as equipment.

Does 280E apply to a separate real estate entity?

Generally no, because the property entity is not trafficking in controlled substances. It deducts depreciation and expenses normally. The structure must be genuine, with arm's length rent supported by market data, or it invites adjustment under IRC Sec. 482.

Do dispensaries get the same treatment as cultivators?

No. The room to include costs in inventory is substantially narrower for a reseller than for a producer, as the Tax Court addressed in Patients Mutual. Retail build-out depreciation is generally a disallowed deduction rather than an inventoriable cost.

Cost Segregation for Cannabis Facilities: Why 280E Changes the Whole Analysis