For state-licensed cannabis operators, few tax provisions hit harder than Section 280E. Understanding 280E deductions, or more precisely the deductions this code section takes away, is the difference between a viable margin and a federal tax bill that swallows profit whole. This article breaks down what 280E disallows, the narrow cost of goods sold exception under Section 471, and why the rule pushes effective tax rates far above those of any other industry.
Quick answer: Internal Revenue Code Section 280E denies cannabis businesses every ordinary and necessary business deduction and tax credit because marijuana remains a Schedule I controlled substance under federal law. The only amounts a cannabis business can still subtract from gross receipts are properly calculated costs of goods sold (COGS) under Section 471. Rent, payroll, advertising, and most operating expenses are not deductible, which can drive a dispensary’s effective federal tax rate well above 70 percent.
What Section 280E Actually Says
Section 280E is short. It states that “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.” You can read the full text at the Legal Information Institute’s copy of 26 U.S.C. § 280E.
Congress enacted the provision in 1982 as part of the Tax Equity and Fiscal Responsibility Act, in response to a Tax Court case that had let a convicted drug dealer deduct his business expenses. The statute was never written with state-legal cannabis in mind, yet its language sweeps in every marijuana business operating under state law. Because cannabis sits on Schedule I of the Controlled Substances Act federally, a state license does nothing to shield an operator from the rule.
The practical effect is severe. A normal business pays tax on net income after subtracting operating costs. A cannabis business subject to 280E pays federal income tax on gross profit, with no allowance for the everyday expenses that keep the doors open. The IRS confirms this position directly, stating on its marijuana industry guidance page that businesses trafficking marijuana in contravention of federal or state law are subject to the limitations of Section 280E.
The Deductions 280E Disallows
The list of disallowed items covers nearly everything a cannabis business spends money on below the gross profit line. These are ordinary and necessary expenses that any other company would deduct under Section 162 without a second thought.
Disallowed deductions typically include:
- Rent and occupancy costs for retail and office space
- Wages and benefits for budtenders, sales staff, and administrative employees
- Advertising, marketing, and branding
- Utilities, insurance, and security for non-production areas
- Professional fees, software, and licensing costs unrelated to production
- Depreciation on retail fixtures and equipment
Tax credits are also off the table. The statute disallows credits as well as deductions, so a cannabis business cannot claim research credits, work opportunity credits, or similar incentives against its federal liability. This dual loss of deductions and credits is what separates 280E from a routine limitation and turns it into a structural penalty.
The disallowance applies regardless of profitability or intent. Whether an operator runs a single storefront or a multi-state platform, the same rule governs the federal return. There is no small-business carve-out, no phase-in, and no relief for operators who are fully compliant with their state’s licensing regime.
The COGS Exception Under Section 471
The one path that survives 280E is cost of goods sold. COGS is not technically a deduction. It is a subtraction used to arrive at gross income in the first place, so it falls outside the reach of a statute that only disallows deductions and credits. This distinction is the entire game in cannabis tax planning.
COGS for a cannabis business is determined under Section 471, the long-standing inventory rules. For a reseller such as a dispensary, COGS generally captures the invoice price of the product plus the direct costs of acquiring and transporting that inventory. For a producer such as a cultivator or processor, COGS can reach further, picking up direct production costs and certain indirect costs tied to producing the inventory.
What COGS cannot do is absorb selling expenses. A dispensary cannot reclassify its marketing budget or its retail rent as inventory cost. The line between a capitalizable inventory cost and a disallowed operating expense is where most audits live, and getting it right requires disciplined accounting from the chart of accounts forward. Pease Bell’s cannabis industry team builds inventory and cost-accounting systems designed to maximize legitimate COGS without crossing into territory the IRS will challenge.
The difference between a cultivator and a retailer matters here. A vertically integrated producer touches the product earlier in its life cycle, which gives it more opportunity to attach legitimate costs to inventory under the producer rules. A pure retailer has a thinner menu of capitalizable costs, which is one reason retail-only operators tend to feel 280E most acutely.
CHAMP and Harborside: The Cases That Set the Rules
Two U.S. Tax Court decisions define how 280E works in practice. Both are essential reading for any operator or advisor.
In Californians Helping to Alleviate Medical Problems, Inc. v. Commissioner, 128 T.C. 173 (2007), the Tax Court addressed a business with two distinct activities: dispensing medical marijuana and providing extensive caregiving and counseling services. The court held that 280E disallowed expenses tied to the marijuana activity but allowed deductions for the separate caregiving business, requiring the taxpayer to allocate expenses between the two based on factors such as headcount and square footage. CHAMP established that a genuinely separate, non-trafficking trade or business can preserve its own deductions.
The second decision narrowed the COGS opportunity. In Patients Mutual Assistance Collective Corporation v. Commissioner (the Harborside case), 151 T.C. No. 11 (2018), the Tax Court held that the dispensary’s sole trade or business was trafficking, that 280E disallowed its operating deductions, and that it had to compute COGS under the Section 471 rules for resellers. Critically, the court concluded that the broader Section 263A uniform capitalization rules do not apply to a business subject to 280E. That holding closed off attempts to capitalize additional indirect costs into inventory as a workaround.
Together, CHAMP and Harborside frame the strategy: separate any legitimate non-cannabis business properly, and compute COGS rigorously under 471, but do not expect 263A to expand what counts as inventory cost. Read carefully, the two cases also send a consistent message about substance over form: the court rewards real operational and accounting separation and penalizes labels applied to justify a deduction after the fact.
How 280E Crushes Effective Tax Rates
Because tax applies to gross profit rather than net income, 280E can produce effective tax rates that bear no relationship to actual profitability. A simplified example shows the mechanics.
Consider a dispensary with $2,000,000 in revenue, $1,200,000 in COGS, and $700,000 in operating expenses such as rent, payroll, and marketing. Its real economic profit is $100,000. For federal tax purposes, though, the operating expenses are disallowed, so taxable income equals gross profit of $800,000. At a 21 percent corporate rate, that is roughly $168,000 of federal tax on $100,000 of actual profit, an effective rate well above 100 percent of economic income.
The damage scales with how thin a business runs its margins and how operating-expense heavy it is. Retailers with high rent and large staffs suffer most, while vertically integrated producers who can route more cost through COGS fare somewhat better. This is why entity structure, cost accounting, and activity separation drive cannabis tax outcomes far more than they do in other industries. Coordinated planning through tax advisory services is how operators model these rates before they file rather than discovering the bill afterward.
It is worth tracking the policy backdrop as well. Federal rescheduling of marijuana to Schedule III would remove cannabis from the reach of 280E, but until any such change is finalized and effective, the rule governs every federal cannabis return. Operators should plan around the law as it stands today, not as it might become.
Practical Steps for Cannabis Operators
The businesses that fare best under 280E treat compliance as an accounting discipline rather than a year-end scramble. A few priorities consistently pay off.
First, build inventory accounting that withstands scrutiny. Every dollar moved into COGS must be traceable to a 471-permissible cost, supported by documentation that an examiner can follow. Sloppy cost allocation is the fastest way to lose the one subtraction 280E permits.
Second, evaluate whether a genuinely separate business exists, as in CHAMP, and if so, document it with separate books, staff, and space. The separation has to be real and substantiated, not a label applied after the fact.
Third, model the effective tax rate early and revisit entity structure with a qualified advisor. Choices about cultivation versus retail, C corporation versus pass-through, and cost-flow methods all change the size of the federal bill under 280E.
Finally, maintain audit-ready records year round. Cannabis returns draw scrutiny, and the operators who survive an examination are the ones whose inventory costs, activity allocations, and entity structures were documented contemporaneously rather than reconstructed under pressure.
Frequently Asked Questions
Can a cannabis business deduct any expenses under 280E?
Operating expenses such as rent, wages, and advertising are not deductible. The only amount a cannabis business can subtract from revenue is cost of goods sold, computed under the Section 471 inventory rules. COGS survives because it reduces gross income rather than functioning as a deduction, placing it outside the scope of 280E.
Does 280E apply if my state has legalized cannabis?
Yes. Section 280E turns on federal law and the Controlled Substances Act, not state law. As long as marijuana remains a Schedule I controlled substance federally, a state license provides no relief from 280E on the federal return.
What did the Harborside case decide about COGS?
In Patients Mutual (Harborside), 151 T.C. No. 11 (2018), the Tax Court held that a dispensary subject to 280E must compute COGS under the Section 471 rules for resellers and cannot use the broader Section 263A capitalization rules to push additional indirect costs into inventory. The decision narrowed how much cost a cannabis reseller can route through COGS.
How can I reduce the impact of 280E?
The main levers are accurate COGS accounting under Section 471, careful separation of any legitimate non-cannabis business under the CHAMP framework, and thoughtful entity and cost-flow planning. Working with advisors who understand cannabis tax law helps you capture every permissible cost while staying defensible in an audit.
Sources:
– 26 U.S. Code § 280E, Legal Information Institute
– IRS Marijuana Industry tax guidance
– Patients Mutual Assistance Collective Corporation dba Harborside v. Commissioner, CourtListener
