What Is Section 280E and Why Does It Exist?
Internal Revenue Code Section 280E was enacted in 1982 after a federal tax court ruled in favor of a convicted drug dealer who had claimed standard business deductions on his tax return. Congress responded by adding a single sentence to the tax code: 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 is prohibited by federal law or the law of any state in which such trade or business is conducted.
That sentence, written to deny tax benefits to illegal drug operations, now applies to every state-licensed cannabis business in the country. It does not matter that your state has legalized cannabis. It does not matter that you hold every required license and pass every compliance audit. As long as cannabis remains a Schedule I controlled substance under the federal Controlled Substances Act, Section 280E applies to your business.
The practical effect is devastating. A normal business deducts all ordinary and necessary business expenses, including rent, payroll, marketing, insurance, professional fees, and utilities, from gross income to arrive at taxable income. Under 280E, cannabis businesses cannot take any of those deductions at the federal level. The only reduction from gross receipts that 280E permits is properly calculated cost of goods sold. This is not a deduction in the technical tax sense; COGS is a reduction applied to determine gross income, which is computed before deductions come into play. That distinction is what saves 280E-affected businesses from paying tax on every dollar of revenue.
How Does 280E Affect Cannabis Businesses in Real Dollar Terms?
Consider a California dispensary generating $2,400,000 in annual revenue with $960,000 in cost of goods sold (product acquisition cost, excise tax at acquisition, and inbound freight), $840,000 in operating expenses (rent, payroll, marketing, security, compliance, professional fees), and $600,000 in book net income before tax.
In a normal business, the owner would pay federal income tax on that $600,000 of net income. At a blended federal rate of approximately 30% (combining the 21% corporate rate with applicable state taxes, or the individual rates if structured as a pass-through), the tax bill would be roughly $180,000, leaving $420,000 in after-tax profit.
Under 280E, this dispensary cannot deduct the $840,000 in operating expenses for federal purposes. Federal taxable income becomes $2,400,000 minus $960,000 in COGS, which equals $1,440,000. At the same 30% blended rate, the federal and state tax bill is approximately $432,000. Against $600,000 of book profit, that is an effective tax rate of 72%. The dispensary keeps $168,000 instead of $420,000. The $252,000 difference is the direct cost of 280E.
Now multiply that across a three-year or five-year period. A dispensary operating at this scale loses roughly $750,000 to $1.25 million in after-tax cash over five years compared to what it would retain if it were treated like any other retail business. This is why 280E planning is not optional. It is the difference between a business that generates wealth for its owners and a business that generates wealth primarily for the IRS.
What Can You Deduct Under 280E? Understanding COGS
The term "deduction" is technically imprecise when discussing 280E, because COGS is not a deduction. It is a computation that reduces gross receipts to arrive at gross income, and 280E only disallows deductions and credits. This distinction, upheld in multiple tax court cases including the landmark Californians Helping to Alleviate Medical Problems (CHAMP) v. Commissioner, is what allows cannabis businesses to subtract COGS from revenue even though they cannot take any standard deductions.
COGS for dispensaries and retailers
A dispensary is classified as a reseller under the tax code, which means its COGS is limited to the costs directly associated with acquiring and receiving inventory. This includes the purchase price of cannabis products from licensed distributors, excise taxes assessed at the point of acquisition (in California, the excise tax is imposed on the distributor but contractually passed to the retailer), inbound freight and delivery charges, and direct costs of receiving and inspecting inventory, such as the labor cost of a receiving clerk during the time specifically spent checking in deliveries.
What dispensary COGS does not include is budtender wages (selling function, not purchasing), store rent (facility cost for selling, not production or acquisition), point-of-sale technology, packaging materials used at the counter, security, or any form of marketing. The IRS has been consistent in disallowing these costs as COGS for resellers, and tax court rulings have confirmed that dispensaries have a narrow COGS definition compared to producers.
COGS for cultivators and manufacturers
Producers have a significantly broader COGS definition under IRC Section 471, which governs inventory costing for entities that manufacture, produce, or grow products. For a cannabis cultivator, COGS can include direct materials (seeds, clones, growing medium, nutrients, pesticides), direct labor (wages for cultivation employees directly involved in growing, harvesting, and processing), facility costs allocable to production (rent or depreciation on the cultivation facility, utilities consumed in production areas, HVAC for grow rooms), production equipment depreciation, and qualifying indirect costs such as quality control, production supervision, and production-related insurance.
Under Section 471, the inventory cost rules require producers to include both direct and certain indirect costs in inventory as costs of procuring, securing, and maintaining inventory. This is actually beneficial for cannabis businesses under 280E because it increases the dollar amount classified as COGS rather than operating expenses. A cultivator with $3 million in revenue might increase defensible COGS from $1.2 million to $1.6 million through a proper Section 471 cost study, reducing taxable income by $400,000 and saving roughly $120,000 in federal tax.
How Is CBD Different from Cannabis Under 280E?
The 2018 Farm Bill removed hemp, defined as cannabis with less than 0.3% THC by dry weight, from the Controlled Substances Act. This single legislative change created a bright line between two types of businesses that may appear similar but have fundamentally different tax treatment.
Pure hemp-derived CBD businesses that exclusively sell products derived from Farm Bill-compliant hemp are not trafficking in a controlled substance and therefore are not subject to 280E. These businesses can deduct all ordinary and necessary business expenses just like any other company. Rent, payroll, marketing, professional fees, insurance, and all other operating costs are fully deductible. The effective tax rate for a profitable hemp CBD business is the standard corporate or pass-through rate, typically 25-35% depending on entity structure and state of operation.
Plant-touching cannabis businesses that sell THC products remain subject to 280E regardless of whether they also sell CBD products. Having a CBD product line does not exempt a dispensary from 280E on its THC sales, and having THC products in your inventory means your entire operation is presumed to be trafficking unless you can demonstrate genuine separation.
What about mixed THC and CBD operations?
This is where 280E analysis gets genuinely complicated. An operator that sells both THC cannabis products and hemp-derived CBD products might argue that the CBD portion of the business should be exempt from 280E because those products are not controlled substances. The IRS has shown willingness to examine this argument but demands rigorous separation.
To support a mixed-operation position, the business generally needs separate legal entities for the THC and CBD operations, separate books and records with no commingling of revenue or expenses, separate bank accounts (to the extent banking is available), genuine operational separation meaning the CBD entity has its own staff, its own inventory, and its own customer transactions, and defensible transfer pricing if the entities share any resources.
A dispensary that sells both THC flower and CBD tinctures from the same counter, using the same employees, tracked in the same POS system, and deposited into the same bank account cannot credibly claim that the CBD sales are a separate non-280E business. The IRS will collapse those operations and apply 280E to the entire revenue stream.
However, a well-structured operator that runs a hemp CBD e-commerce business through a separate LLC with its own fulfillment, its own accounting, and no operational overlap with the licensed cannabis dispensary may have a defensible position. The tax savings can be substantial. If the CBD entity generates $500,000 in revenue with $200,000 in operating expenses and $100,000 in profit, the ability to deduct those operating expenses saves roughly $60,000 in annual federal tax compared to having those sales trapped inside a 280E entity.
What COGS Allocation Strategies Reduce 280E Impact?
Formal Section 471 cost studies
A Section 471 cost study is a formal analysis conducted by a tax professional that identifies all costs eligible for inclusion in COGS as costs of procuring, securing, and maintaining inventory under the inventory cost rules of Section 471. For cannabis cultivators and manufacturers, this study typically examines every cost center in the operation and determines what percentage of each cost is allocable to production versus selling, general, and administrative functions.
The results are often significant. A mid-size cultivator operating a 10,000-square-foot facility might have $2 million in total expenses. Without a cost study, the company might classify $800,000 as COGS based on obvious direct costs. A proper Section 471 analysis might identify an additional $200,000-$400,000 in indirect costs that legitimately belong in COGS, including a portion of facility rent, utilities, insurance, and supervisory labor. At a 30% combined tax rate, that additional $200,000-$400,000 in COGS saves $60,000-$120,000 in federal tax annually.
The cost study also creates contemporaneous documentation that supports your COGS position in the event of an IRS audit. Without a formal study, your COGS allocations are based on internal judgment, which is much easier for an IRS examiner to challenge. With a study prepared by a qualified professional, your position is supported by a methodology that references the actual statutory and regulatory framework.
Inventory costing method selection
The IRS allows taxpayers to value inventory using several methods, and the choice of method affects the dollar value of COGS. The two most relevant methods for cannabis businesses are FIFO (first in, first out) and weighted average cost. In a market where wholesale prices are declining, as has been the case in many cannabis markets since 2022, FIFO produces higher COGS because the older, higher-cost inventory is recognized first. This results in lower taxable income under 280E.
The choice of inventory method must be made on the initial return and maintained consistently. Changing methods requires IRS approval through Form 3115. However, if your business has never formally elected an inventory method, or if your prior accountant used an informal approach, there may be an opportunity to adopt the most favorable method with appropriate documentation.
How much can a cost study actually save in real dollars?
To put concrete numbers on this: a vertically integrated cannabis company with $5 million in revenue engaged our firm to conduct a Section 471 cost study. Their prior accountant had classified $1.8 million as COGS using a rough approximation. The formal cost study identified $2.35 million in defensible COGS by properly allocating facility costs, production-related labor, and qualifying indirect expenses. The $550,000 increase in COGS reduced federal taxable income from $3.2 million to $2.65 million, saving approximately $165,000 in federal income tax for that single year. The cost study itself was a fraction of that savings and remains applicable for multiple years until the company's operations change materially.
Common 280E Mistakes That Cost Cannabis Businesses Money
Mistake one: treating all expenses as non-deductible without analysis
Some cannabis accountants take an overly conservative approach and refuse to classify anything beyond the most obvious direct product costs as COGS. While this avoids audit risk, it systematically overpays taxes. A dispensary that only includes the invoice price of products in COGS and ignores excise taxes paid at acquisition, inbound freight, and receiving labor is likely overpaying federal tax by $15,000-$40,000 annually on a $2 million revenue base.
Mistake two: aggressively reclassifying operating expenses as COGS
The opposite mistake is equally dangerous. Some operators or their advisors attempt to classify budtender wages, store rent, security costs, and even marketing expenses as COGS. These positions are not supported by the tax code for resellers and have been rejected in IRS audits and tax court cases. An aggressive COGS position that does not survive audit results in back taxes, interest, and potential penalties that dwarf any short-term tax savings.
Mistake three: inconsistent methods across tax years
The IRS looks for consistency in how cannabis businesses compute COGS. If your COGS as a percentage of revenue is 45% one year, 62% the next, and 48% the year after, with no corresponding change in your business operations, the inconsistency itself becomes an audit trigger. Every change in COGS methodology should be documented, justified, and ideally supported by a professional analysis.
Mistake four: failing to document the 280E position
A COGS position that is not documented is a COGS position that is difficult to defend. The IRS expects to see contemporaneous records supporting your inventory costing method, your cost allocations, and the basis for including each category of cost in COGS. A cost study, detailed work papers from your tax preparer, and organized supporting documentation (invoices, receiving logs, payroll records, facility cost allocations) constitute the evidentiary foundation for your 280E position.
Mistake five: ignoring state-level 280E decoupling
Several states have decoupled from 280E for state income tax purposes, allowing cannabis businesses to deduct ordinary expenses on their state returns even though those expenses remain non-deductible federally. California, Colorado, Oregon, and other states have addressed this in various ways. Failing to claim state-level deductions that are available simply because your federal return does not allow them is leaving money on the table.
Is 280E Going Away? Rescheduling, SAFE Banking, and Reform Outlook
There have been ongoing federal efforts to reschedule cannabis from Schedule I to a less restrictive classification, which would potentially eliminate the application of 280E. The DEA initiated a formal rescheduling review, and various legislative proposals including the SAFE Banking Act and broader cannabis reform bills have advanced in Congress at various points.
However, as of this writing, cannabis remains Schedule I and 280E remains fully in effect. No legislative fix has been enacted. Rescheduling, even if it ultimately occurs, will involve a lengthy administrative process with uncertain timing and uncertain tax implications. Some tax practitioners believe that rescheduling to Schedule III would remove 280E applicability entirely. Others believe that the IRS could take a narrower interpretation or that Congress would need to act separately to clarify the tax treatment.
The only responsible planning approach is to structure your business and your tax strategy around current law. If 280E is modified or repealed, that will be upside to your existing plan. If you build your financial model assuming reform that does not arrive on schedule, you will face a cash crisis when the full 280E tax burden materializes against projections that assumed it would not.
Building a 280E-Resilient Cannabis Business
The cannabis businesses that thrive under 280E share three characteristics. First, they maximize legitimate COGS through proper cost accounting, formal cost studies, and disciplined inventory management. Second, they minimize non-deductible overhead by running lean operations where every dollar of non-COGS spending produces measurable business value. Third, they maintain impeccable documentation that supports their tax positions in the event of an audit.
280E is punishing, but it is also predictable. The rules are known, the case law is developing, and the strategies for operating within the constraints are well-established. The operators who treat 280E as a business planning input rather than an uncontrollable burden are the ones who build sustainable, profitable cannabis companies regardless of whether federal reform eventually arrives.