How Does Section 280E Work and Why Does It Hit Dispensaries So Hard?
Section 280E of the Internal Revenue Code is a single sentence that costs the cannabis industry hundreds of millions of dollars annually: "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 (or the activities which comprise such trade or business) consists of trafficking in controlled substances (within the meaning of Schedule I and II of the Controlled Substances Act) which is prohibited by Federal law or the law of any State in which such trade or business is conducted." Because cannabis remains classified as a Schedule I controlled substance at the federal level, every cannabis business in the United States, regardless of state legality, is subject to this provision.
To understand the financial impact, consider how taxation works for a normal business versus a cannabis business. A normal retail business with $2M in revenue, $1.2M in cost of goods sold, and $500,000 in operating expenses such as rent, marketing, payroll, insurance, and professional fees would report $300,000 in taxable income ($2M minus $1.2M minus $500,000) and owe approximately $63,000 in federal tax at the 21 percent corporate rate. A dispensary with identical economics cannot deduct the $500,000 in operating expenses. Its taxable income is $800,000 ($2M minus $1.2M), and its federal tax bill is $168,000. That is $105,000 more in tax on the exact same economic activity, purely because of 280E. The effective tax rate on economic profit jumps from 21 percent to 56 percent.
This math explains why 280E is the single most important tax issue in cannabis and why COGS optimization is not merely a tax planning exercise but a survival strategy. Every dollar of expense that can be legitimately classified as COGS rather than as an operating expense directly reduces taxable income and the resulting tax burden. For a C-corporation paying the 21 percent federal rate, each additional $10,000 of properly classified COGS reduces the tax bill by $2,100. For a dispensary doing $2M to $5M in annual revenue, the cumulative impact of a thorough COGS analysis versus a sloppy one is typically $40,000 to $80,000 per year in unnecessary tax payments.
What Expenses Can a Dispensary Legitimately Include in COGS?
The IRS allows cannabis businesses to reduce their gross receipts by the cost of goods sold under IRC Section 61, even though 280E disallows other deductions. The challenge is determining exactly which costs qualify as COGS for a dispensary operation. The applicable guidance comes from IRC Section 471, which governs inventory accounting and includes all costs of procuring, securing, and maintaining inventory.
For a dispensary, COGS consists primarily of the purchase price of cannabis products acquired for resale. This is the invoice price paid to the licensed distributor or cultivator for flower, edibles, concentrates, tinctures, and other products that the dispensary stocks and sells. This is the most straightforward and least disputed component of COGS, and for many dispensaries it represents the largest single line item.
Beyond the purchase price, several additional costs may be allocable to COGS under a proper analysis. Inbound freight and transportation costs incurred to get product from the distributor to the dispensary can be included in inventory cost. Receiving and inspection labor, meaning the labor cost of employees whose job duties include receiving shipments, inspecting product quality, logging inventory into the tracking system, and placing product into storage, can be allocated to COGS based on the percentage of their time spent on these activities. Storage costs directly associated with maintaining inventory, including the portion of facility rent attributable to storage space, climate control for storage areas, and shelving or storage equipment, may also be allocable.
The critical requirement is that every cost included in COGS must be directly tied to the acquisition, receipt, or storage of inventory. Costs that relate to selling the product, such as budtender wages for time spent assisting customers, marketing and advertising, point-of-sale system costs, and general administrative overhead, are not includable in COGS. The line between an allocable cost and a non-deductible operating expense is where most dispensaries either leave money on the table or overreach and create audit risk.
What Expenses Are Definitely Not Deductible Under 280E?
Understanding what cannot be deducted is as important as understanding what can. Under 280E, dispensaries cannot deduct any of the following as business expenses: rent for retail floor space (as opposed to storage space), salaries and wages for employees engaged in selling or administrative functions, marketing, advertising, and promotional costs, insurance premiums, legal and professional fees, office supplies and technology costs, utilities attributable to non-storage areas, bank fees and merchant processing fees, and any other expense that would normally be deductible under IRC Section 162 as an ordinary and necessary business expense.
This prohibition is absolute. There is no threshold, no phase-in, and no exception for small businesses. A dispensary generating $500,000 in revenue is subject to the same 280E rules as one generating $50M. The only relief available is the COGS offset described above, which is why maximizing COGS through a rigorous cost study is the single most important tax strategy available to dispensary operators.
It is worth noting that some dispensaries have attempted to deduct operating expenses by arguing that their non-cannabis activities, such as selling branded merchandise, accessories, or non-cannabis wellness products, constitute a separate trade or business not subject to 280E. The IRS and the courts have been largely hostile to this argument, most notably in the Californians Helping to Alleviate Medical Problems (CHAMP) case and the Harborside Health Center case. In CHAMP, the Tax Court allowed a limited deduction for caregiving services provided alongside cannabis sales, but only because the caregiving was established as a genuinely separate business with its own revenue, expenses, and operations. In Harborside, the Tax Court rejected the argument that the dispensary's ancillary activities constituted separate trades or businesses, holding that the sale of cannabis was the primary activity and that other activities were incidental to it.
How Do You Conduct a Proper COGS Cost Study?
A COGS cost study is a formal analysis, typically performed by a CPA with cannabis tax expertise, that identifies and quantifies every cost legitimately allocable to inventory. The study produces a documented methodology, supported by contemporaneous data, that can withstand IRS examination. Without a cost study, dispensaries tend to either understate their COGS, paying more tax than necessary, or overstate it, creating audit exposure and potential penalties.
The cost study process begins with a detailed analysis of the facility layout. The total square footage of the dispensary is divided into functional areas: retail floor, storage and inventory, receiving and inspection, office and administrative, break rooms and common areas, and any other distinct zones. The percentage of total square footage dedicated to inventory-related functions determines the portion of occupancy costs, such as rent, property tax, and utilities, that may be allocable to COGS. A dispensary where 25 percent of the total square footage is dedicated to storage, receiving, and inventory management can allocate 25 percent of occupancy costs to COGS.
The next component is a labor allocation analysis. Every employee's job duties are analyzed to determine what percentage of their time is spent on COGS-eligible activities versus non-eligible activities. A receiving clerk who spends 80 percent of their time on inventory-related functions and 20 percent on general administrative tasks would have 80 percent of their compensation allocated to COGS. A budtender who spends 90 percent of their time assisting customers and 10 percent restocking shelves might have 10 percent allocated to COGS. The allocations must be based on actual time studies or reasonable estimates documented with a clear methodology, not arbitrary percentages.
The study also examines supplies, equipment, and other costs that relate to inventory handling. Packaging materials, security systems and monitoring for storage areas, inventory tracking software, and equipment used in receiving and inspection may each have a COGS-allocable component. The key in every case is documentation. The IRS does not accept after-the-fact reconstructions or round-number estimates. The cost study should be completed prospectively, updated annually, and supported by facility diagrams, time-and-motion data, and clear calculations linking each cost to the specific inventory function it supports.
A well-executed cost study for a dispensary doing $2M in annual revenue typically costs $5,000 to $15,000 in professional fees and produces annual tax savings of $40,000 to $80,000. The return on investment is immediate and recurring, which is why every dispensary should have a current cost study in place at all times.
Why Does Entity Structure Matter So Much Under 280E?
The choice of entity structure has outsized consequences in cannabis because 280E amplifies the tax differences between structures that would be minor in a normal business. The three primary options are C-corporation, S-corporation, and limited liability company taxed as a partnership.
A C-corporation is generally the recommended structure for dispensaries. The corporation pays federal income tax at a flat 21 percent rate on its taxable income, which under 280E is its gross receipts minus allowable COGS. The key advantage of C-corp status is liability containment. If the corporation cannot pay its 280E tax obligation, the IRS can pursue the corporation's assets but generally cannot reach through the corporate veil to the shareholders' personal assets. This is a critical protection in an industry where 280E tax bills can accumulate rapidly and where the IRS has been aggressive in collection efforts.
An S-corporation passes income and losses through to its shareholders, who report them on their individual returns. Under 280E, this pass-through creates a devastating problem called phantom income. The shareholder owes personal income tax on their pro-rata share of the S-corp's 280E-inflated taxable income, regardless of whether the company distributed any cash to cover the tax bill. Consider a dispensary organized as an S-corp with two equal shareholders. If the dispensary has $2M in revenue, $1.2M in COGS, and $500,000 in non-deductible operating expenses, each shareholder reports $400,000 in taxable income on their personal return ($800,000 divided by two). At a combined federal and California state rate of approximately 45 percent, each shareholder owes $180,000 in personal tax, even if the company's actual cash flow after paying its expenses is only $300,000 total. The tax obligation exceeds the company's ability to fund distributions.
An LLC taxed as a partnership creates similar pass-through problems plus additional complexity around self-employment tax, the allocation of items among members, and the treatment of guaranteed payments. For most dispensaries, the partnership structure compounds 280E's punitive effects without providing any offsetting benefit.
The entity structure decision should be made before the dispensary begins operations, ideally during the licensing process when the business plan and financial projections are being developed. Restructuring an existing entity is possible but involves tax consequences that must be carefully modeled. Converting from an S-corp to a C-corp, for example, requires the S-corp to recognize built-in gains on appreciated assets, which can generate a tax liability at the time of conversion.
What Are the Most Common COGS Mistakes Dispensaries Make?
Having reviewed the tax returns and financial records of dozens of dispensaries, the most common mistakes fall into predictable patterns. Not conducting a cost study at all is the most frequent error. Without a formal analysis, dispensaries typically report COGS as the purchase price of inventory and nothing else, leaving significant allocable costs unclaimed. A dispensary with $2M in revenue that reports only product cost as COGS might show $1M in COGS when a proper study would support $1.25M, resulting in $52,500 in unnecessary tax at the 21 percent rate.
Over-allocating costs to COGS without documentation is the opposite error and equally dangerous. Some dispensaries, often on the advice of non-specialized accountants, include costs in COGS that do not have a defensible connection to inventory acquisition, receipt, or storage. Budtender wages, marketing costs, and general administrative overhead are sometimes reclassified as COGS in hopes that the IRS will not scrutinize the classification. The IRS has specifically identified cannabis business COGS as a priority examination area, and over-allocation without supporting documentation is exactly the type of issue that triggers adjustments, penalties, and extended audits.
Failing to update the cost study annually is another common mistake. A dispensary's operations, staffing, facility layout, and product mix change over time, and the COGS allocation should reflect those changes. A cost study performed in 2023 based on a 2,000-square-foot facility with 8 employees may not be valid for a 2025 tax return if the dispensary has expanded to 4,000 square feet with 15 employees. Annual updates ensure that the allocation methodology reflects current operations and that the supporting documentation is fresh.
Ignoring Section 471(c) is a more technical but potentially significant mistake. The Tax Cuts and Jobs Act added Section 471(c), which allows small business taxpayers with average annual gross receipts of $25M or less over the prior three years to account for inventories using the method reflected in their applicable financial statements or, if no applicable financial statements exist, their books and records. Some cannabis tax practitioners argue that 471(c) allows dispensaries to adopt a more favorable inventory accounting method that allocates more costs to COGS. This position has not been fully tested in litigation, and the IRS may challenge it, but it represents a legitimate area of tax planning that cannabis-specialized CPAs should evaluate for each client.
How Should a Dispensary Prepare for an IRS Audit of Its 280E Position?
The IRS has publicly stated that cannabis businesses are a priority enforcement area, and IRS Commissioner data shows that cannabis-related examinations have increased in recent years. Preparing for a potential audit is not optional. It is a cost of doing business in this industry.
Audit preparation begins with the COGS cost study described above. If the study is well-documented, with a clear methodology, supporting data, and a defensible connection between each allocated cost and the inventory function it supports, the dispensary has a strong starting position. The study should be accompanied by facility diagrams showing the square footage allocation, employee job descriptions with time allocation estimates, purchase invoices and receiving records that verify the reported cost of inventory, METRC records showing seed-to-sale tracking compliance, and complete financial statements with detailed general ledger support.
The dispensary should also maintain a clear paper trail for every significant COGS-related decision. If the company changed its inventory accounting method, the change should be documented with a memo explaining the rationale and the authority supporting the new method. If the company added a new cost category to COGS, the addition should be supported by a written analysis explaining why the cost qualifies under Section 471 as a cost of procuring, securing, or maintaining inventory.
When an audit notice arrives, the most important step is to engage a cannabis-specialized CPA or tax attorney before responding. The initial response to the IRS sets the tone for the entire examination, and having a knowledgeable professional manage the communication, document production, and strategy from the beginning can mean the difference between a manageable adjustment and a catastrophic one. We have seen dispensaries where unrepresented founders agreed to audit adjustments of $200,000 or more that a cannabis-specialized professional would have reduced to $30,000 to $50,000 through proper documentation and negotiation.
Northstar Financial works with dispensaries across California and other legal states to build the COGS documentation, entity structures, and audit-ready financial systems that minimize 280E exposure while maintaining full compliance. Whether you need a comprehensive cost study, an entity structure evaluation, or ongoing tax planning support, our team brings deep cannabis tax expertise to every engagement. The tax savings from a properly executed 280E strategy typically exceed the professional fees within the first year, making this one of the highest-return investments a dispensary operator can make.