Section 280E of the Internal Revenue Code is the single largest financial burden on legal cannabis businesses in the United States. The provision, enacted in 1982 to prevent drug dealers from deducting business expenses on federal tax returns, denies cannabis operators the ability to deduct most ordinary business expenses because cannabis remains a Schedule I controlled substance under federal law. The result — cannabis businesses routinely pay effective federal tax rates between 60 and 90% of net income, compared to 21 to 37% for non-cannabis businesses.

This guide explains how 280E works, what strategies legitimately reduce 280E exposure, what the potential rescheduling of cannabis would mean for 280E, and how to choose a CPA who actually understands cannabis taxation.

How Section 280E Actually Works

Section 280E reads — “No deduction or credit shall be allowed for any amount paid or incurred during the taxable year in carrying on any trade or business if such trade or business consists of trafficking in controlled substances which are prohibited by Federal law.”

For cannabis businesses, this means most expenses that other businesses deduct freely — rent, marketing, salaries, professional fees, utilities, insurance, depreciation on non-COGS assets — cannot reduce federal taxable income. The only exception courts have consistently allowed is Cost of Goods Sold (COGS), which is treated as a reduction of gross receipts rather than a deduction.

A simple example illustrates the impact. A cultivator with $10 million in revenue and $4 million in COGS reports $6 million gross profit. They have $4 million in operating expenses (rent, marketing, salaries, etc.). Under normal tax rules, federal taxable income would be $2 million, with federal tax at 21% corporate rate equaling $420,000. Under 280E, the $4 million in operating expenses cannot be deducted, so taxable income is the full $6 million gross profit, with federal tax of $1.26 million. The cannabis operator pays three times the federal tax on identical operations.

What Counts as COGS

The strategic key to 280E management is maximizing legitimate COGS allocation. COGS includes direct production costs — for cultivators, this means seeds, clones, nutrients, soil, growing media, electricity for grow lights, labor directly involved in plant care, and depreciation on cultivation equipment. For manufacturers, COGS includes raw inputs, packaging materials, direct production labor, and depreciation on production equipment. For retailers, COGS is more limited — primarily the wholesale cost of products sold.

The IRS has fought cannabis operators repeatedly on COGS calculations. The Tax Court’s decision in Champ v. Commissioner and subsequent cases established that operators can use Section 471 inventory accounting methods to absorb production-related costs into COGS. Section 263A, which would allow more expansive cost capitalization, has been ruled unavailable to cannabis operators by the Tax Court.

For cultivators and manufacturers, careful cost accounting can shift significant operating expenses into COGS through proper allocation. Indirect production costs — facility costs allocated to cultivation areas versus office areas, utilities allocated by production use, labor allocated by function — can substantially expand COGS when properly documented.

Strategies That Reduce 280E Exposure

Entity structure — Many MSOs operate non-cannabis subsidiaries that handle services 280E doesn’t reach. A separate property management LLC owns real estate and leases to the cannabis operating company. A separate marketing services company handles brand work for cannabis clients. A separate IP holding company licenses trademarks to the operating company. Done properly, this shifts deductible expenses to non-cannabis entities where standard tax rules apply.

This structure must be done carefully. The IRS has challenged operators when the non-cannabis subsidiary lacks real economic substance, when transfer pricing between entities doesn’t reflect arm’s length terms, and when the subsidiary is purely a paper vehicle. Operators implementing this strategy need experienced cannabis tax counsel from the start.

Cost segregation studies — For facilities with significant build-out investment, cost segregation studies can accelerate depreciation on cultivation equipment, manufacturing equipment, and certain build-out costs that flow into COGS rather than non-deductible depreciation.

Inventory accounting method — Section 471(c), available to taxpayers with under $25 million in gross receipts (adjusted annually), allows simplified inventory methods that may benefit smaller operators. The TCJA changes created some opportunities here that cannabis-specific CPAs can identify.

Direct cost allocation discipline — Many operators leave money on the table through sloppy cost tracking. Every dollar of operating expense should be evaluated for whether it can be properly allocated as a production cost. Maintenance staff who clean cultivation rooms, security guards who protect production areas, utility costs by physical location — all of these can shift toward COGS with proper documentation.

Common 280E Mistakes

The most expensive mistake is treating 280E casually. Operators who use general CPAs unfamiliar with cannabis routinely over-pay or under-pay taxes. Both create problems. Over-payment is wasted capital. Under-payment triggers IRS audits, which cannabis operators face at rates significantly higher than other industries.

Failure to document COGS allocation methodology causes audit problems. The IRS demands clear documentation of how costs are allocated between COGS and non-COGS. Operators who allocate aggressively without documentation lose audit defenses.

Mixing personal and business expenses, common in early-stage operations, makes 280E exposure worse. Personal expenses run through the business cannot be deducted under 280E, and create audit risk that endangers legitimate COGS positions.

Cash management failures compound 280E pain. Many cannabis operators are profitable on paper but cash-poor because their tax liability consumes available cash. Operators must reserve cash quarterly for estimated tax payments based on 280E-adjusted income, not GAAP income.

Federal Rescheduling and 280E

The Drug Enforcement Administration began proceedings in 2024 to reschedule cannabis from Schedule I to Schedule III under the Controlled Substances Act. If rescheduling completes, 280E would no longer apply to cannabis operators because 280E specifically targets Schedule I and Schedule II substances.

The implications are massive. Cannabis operators would shift from 60 to 90% effective federal tax rates to standard corporate rates of 21% or pass-through rates of 21 to 37%. Industry-wide, rescheduling would add billions of dollars in annual operator cash flow and dramatically improve sector economics.

The process is not certain. The DEA proceeding faced legal challenges and procedural delays through 2024 and 2025. As of mid-2026, rescheduling remains possible but not imminent. Operators should plan operations assuming 280E continues to apply, with rescheduling treated as upside rather than expected outcome.

Operators should also prepare for the transition period if rescheduling completes. Tax accounting method changes, accumulated NOLs (cannabis operators generally cannot use net operating losses against future income while 280E applies), and entity restructuring all become opportunities if 280E goes away.

Choosing a Cannabis CPA

Generic CPAs cannot serve cannabis operators well. The 280E expertise required, plus the operational understanding of cultivation, manufacturing, and retail cost flows, requires cannabis specialization.

Questions to ask any prospective CPA — How many cannabis clients do you currently serve? What’s your experience with IRS audits of cannabis operators? Can you walk me through COGS allocation methodology for my business type? Do you handle entity structuring for multi-state operators? What’s your fee structure (flat retainer, hourly, hybrid)?

Reputable cannabis tax firms include GreenGrowth CPAs, Bridge West, Indiva Advisors, MGO, and several regional firms with deep cannabis practices. Costs run $5,000 to $25,000 annually for single-state operators and $50,000 to $250,000 for multi-state and MSO clients.

Audit Preparation

Cannabis operators face IRS audit rates significantly higher than other industries. Prepare continuously rather than reactively. Maintain detailed COGS documentation, including time tracking for labor by function, utility allocation methodology with supporting calculations, and inventory tracking that ties to METRC or state system data.

Bank deposit records must reconcile to reported revenue. Cash businesses face additional scrutiny — operators with significant cash transactions must maintain robust internal controls and detailed reconciliation documentation.

Entity structure documentation must support arm’s length transactions between related entities. Lease agreements, service agreements, and IP licensing agreements should be drafted by experienced counsel and reflect realistic market terms.

Recommendation

Cannabis tax planning is too consequential to handle reactively. Engage a cannabis-specialized CPA from day one. Maintain detailed cost accounting that maximizes COGS legitimately. Plan entity structure with future expansion in mind. Reserve cash quarterly for tax obligations based on accurate 280E-adjusted income projections. Don’t bet on rescheduling — plan for 280E to continue and treat any improvement as upside.

Browse cannabis CPAs, tax advisors, and financial consultants in the NextCanna Connect Finance & Insurance directory and Consultants & Advisors directory.