Tax Guide · 2026 Edition
Does 280E Still Apply in 2026? Medical vs. Adult-Use Cannabis After Schedule III
A current-status guide for OLCC-licensed Oregon operators: what Section 280E actually says, what a move to Schedule III changes, what remains unresolved pending Treasury and IRS guidance, and the accounting work that pays off under either outcome.
Published September 2026 · Informational only. This guide is not tax advice for any specific business, and federal treatment continues to develop.
Direct answer
Does 280E Still Apply in 2026?
The honest answer is conditional, and any source giving you a flat yes or no is overstating what is published.
The statute is narrow and mechanical. It denies deductions and credits for amounts paid or incurred in carrying on a trade or business that consists of trafficking in controlled substances within the meaning of Schedule I or Schedule II of the Controlled Substances Act. Every word in that sentence matters. The disallowance turns on the schedule, on what the trade or business consists of, and on the period in which the amounts were paid or incurred.
That structure is why a change in classification is significant and why it is also incomplete. Movement out of Schedules I and II changes the hook the statute depends on. It does not answer what happens in a partial year, how prior open years are treated, whether amended returns are appropriate, how the uniform capitalization rules interact with newly relevant operating expenses, or what substantiation the Internal Revenue Service will expect from an industry that has spent a decade optimizing exclusively for cost of goods sold. Those questions require Treasury and IRS guidance. Until that guidance exists, they are unresolved, and this guide labels them as unresolved rather than filling the gap with invented rules.
The practical takeaway for Oregon operators is that no single sentence covers every entity, every activity and every tax year. A retailer in Portland with one location, a cultivator outside Medford with a wholesale book, and a multi-entity group with a processing site and two stores are three different fact patterns. Each needs a current-law analysis for each year rather than a position carried forward out of habit. That is the work our 280E tax planning service performs.
Short answer
Section 280E disallows deductions and credits for a trade or business trafficking in controlled substances described in Schedule I or Schedule II. Whether it reaches a given Oregon cannabis business in a given year depends on the federal classification in effect for that period, the character of each activity, and the records supporting it. Rescheduling changes the statutory starting point; it does not by itself resolve effective dates, transition years, prior-period positions, or how expenses must be substantiated.
Current status
Established, Changed, and Unresolved
Separating these three buckets is the single most useful thing an operator can do before making any decision.
| Bucket | What it covers | How to treat it |
|---|---|---|
| Established | The text of Section 280E; the long-standing rule that cost of goods sold is a subtraction from gross receipts rather than a deduction; the requirement that inventory costing follow applicable tax accounting rules; the burden on the taxpayer to substantiate positions. | Build accounting around it. None of this depends on how rescheduling resolves. |
| Changed | The federal classification conversation itself, and the resulting possibility that the Schedule I/II predicate in the statute no longer describes cannabis for some period. | Monitor it, model it, and preserve the records you would need to act on it. |
| Unresolved | Effective dates and partial-year mechanics; treatment of prior open years and amended returns; substantiation expectations for newly relevant operating expenses; interaction with uniform capitalization; documentation standards for allocation between activities. | Do not take a position that assumes a favorable answer without professional advice on your specific facts. |
| Future guidance may address | Transition rules, reporting mechanics, examination priorities, and the level of contemporaneous documentation expected for allocated shared costs. | Structure your books now so that implementing guidance later is a mapping exercise, not a rebuild. |
Oregon market structure
Medical vs. Adult-Use Cannabis: Why the Difference Matters for 280E
Oregon's dual structure puts patient-facing and adult-use activity inside the same buildings, the same payroll and often the same point-of-sale system.
Oregon operates adult-use cannabis under the Oregon Liquor and Cannabis Commission, alongside the Oregon Medical Marijuana Program administered by the Oregon Health Authority. In practice, most OLCC-licensed retailers serve both registered patients and adult-use customers from the same sales floor, and Metrc functions as the seed-to-sale system across retail, cultivation, processing and wholesale license types. Patient transactions can also carry different retail tax treatment at the register than adult-use transactions do, which means the split is already visible in point-of-sale data at most stores.
That is a genuine structural advantage, and most operators are not using it. A store that already distinguishes patient sales for state tax purposes usually has the raw transaction-level data needed to segment revenue by activity. What is typically missing is the accounting layer: revenue accounts, departments or classes, and cost tracking that carries the same distinction into the general ledger and the financial statements. Without that layer, the distinction dies at the register and never reaches the return.
The same logic applies upstream. A cultivator near Eugene or a processor in Salem supplying product that ultimately reaches both patient and adult-use channels has an activity mix too, even though the split is less visible in a single receipt. Whether that mix ever matters federally is unresolved. The cost of being able to answer the question is small; the cost of not being able to answer it, if it turns out to matter, is not.
Why does the medical/adult-use split matter?
Historically, courts applied the same statutory language to both, and outcomes turned on whether a genuinely separate trade or business existed and was documented. Whether the distinction acquires new federal significance is unresolved. What is certain is that an operator who cannot separate the two in its records has no ability to act on any distinction that emerges.
- State tax treatment at the register≠Federal deductibility analysis
- License type≠Trade or business for tax purposes
- Metrc quantity records≠Financial inventory value
- Accounting classification≠Tax treatment
Commercial 280E work
Want this analysis run against your actual books?
Our Oregon 280E tax planning service reviews your current accounting, inventory records and last filed return, then tells you what the workpapers support today and what has to be reconciled first.
The core problem
The Mixed-Use Cannabis Accounting Problem
Almost every question about medical versus adult-use treatment collapses into one accounting question: can you trace revenue and cost to each activity with contemporaneous records?
Consider a hypothetical Oregon operator — call it a two-store retailer in the metro area with a small wholesale line. Roughly a fifth of transactions are registered-patient sales. Both stores share a general manager, a compliance lead, a bookkeeper, one point-of-sale contract, one security vendor, one insurance policy and one accounting firm. The stores themselves have separate leases; the wholesale activity runs out of the back of one of them. On the current books, everything below gross profit sits in a handful of broad operating expense accounts with no department tagging at all.
If federal treatment ever distinguishes between these activities, this operator cannot act on it. Not because the facts are unfavorable, but because the records cannot describe the facts. Revenue is not segmented past the point-of-sale export. Payroll is a single lump. Rent is one line per lease with no square-footage support. There is no written accounting policy describing how anything is allocated, because nothing is. Reconstructing this after the fact produces estimates, and estimates prepared in response to an examination carry far less weight than records created as the transactions occurred.
The work breaks into layers. Revenue segmentation comes first, because it is the easiest and drives everything else: separate income accounts or classes for patient-facing and adult-use sales, mapped from the point-of-sale system rather than typed in. Direct costs follow — costs that belong to one activity and only one activity, tagged at entry rather than reclassified at year end.
Shared costs are the hard layer: payroll for staff who serve both channels, rent for a floor that serves both, utilities, security, software subscriptions, insurance and professional services. These require a method, applied consistently and written down. Inventory and cost of goods sold sit underneath all of it, supported by purchase records, receiving documentation, physical counts and reconciliations against Metrc quantities.
Nothing in this section describes an IRS-approved allocation methodology, because no such methodology has been published for this fact pattern. What is described is ordinary defensible cost accounting: measure what you can measure, document the basis, apply it consistently, and keep the support.
Revenue traceable by activity
+Direct costs traceable by activity
+Shared costs allocated by a documented method
+Inventory and COGS support
=Records that can implement any future guidance
- Revenue segmented by activity in the general ledger
- Departments or classes enabled and actually used
- Chart of accounts that splits shared cost pools
- Direct expenses tagged at entry
- Payroll detail by role and where practical by time
- Rent supported by measured square footage
- Utilities and security traced to facility
- Software allocated by user or function
- Professional fees tied to the matter
- Inventory records reconciled to counts
- COGS workpapers with underlying support
- Point-of-sale exports retained and reconciled
- Metrc records preserved by period
- A written, dated allocation policy
- Contemporaneous documentation, not year-end reconstruction
Allocation
Cannabis 280E Expense Allocation and Apportionment
Shared expenses are where the accounting difficulty concentrates, and where documentation quality decides what a return can support.
| Shared cost | Common allocation basis | Support that makes it defensible |
|---|---|---|
| Rent and occupancy | Measured square footage by function or activity | Floor plan, lease, dated measurement schedule, consistent period-over-period application |
| Payroll and labor | Actual time by role or department where tracked | Timekeeping records, job descriptions, payroll registers, department mapping |
| Management and administration | Documented time studies or role-based allocation | Contemporaneous time records rather than a year-end percentage |
| Security | Facility, coverage area or contracted scope | Vendor contract and invoices identifying sites and scope |
| Utilities | Facility, metered usage, or measured space | Utility bills by meter, facility schedule, usage records where available |
| Software and systems | User count, module, or function served | Subscription invoices, user lists, module assignments |
| Insurance | Policy coverage by location or activity | Policy declarations and premium schedules identifying covered operations |
| Professional services | Matter or engagement scope | Engagement letters and itemized invoices describing the work performed |
| Shared facilities | Function of space and measured usage | Facility diagrams, production versus non-production designation, dated support |
One further point deserves emphasis: consistency matters as much as method. An allocation basis that changes each year in whichever direction happens to be favorable invites scrutiny, and it undermines the credibility of the entire workpaper set. Pick a basis you can support, write it down, apply it every period, and document the reason if it ever genuinely needs to change.
Systems
Chart of Accounts After Schedule III
Most cannabis charts of accounts were built for one purpose: defending cost of goods sold. That design becomes a limitation if operating expenses start to matter.
A typical Oregon cannabis chart of accounts has extensive detail above gross profit and very little below it. Inventory and COGS are broken out carefully; everything else lands in a dozen catch-all accounts. That was rational under a regime where operating expenses were disallowed anyway. It becomes a constraint the moment the question changes from "what is inventoriable?" to "what can you substantiate, and for which activity?"
- Separate revenue accounts for patient-facing and adult-use activity
- Separate revenue for wholesale and non-cannabis lines
- Inventory accounts by stage and license type
- COGS accounts that mirror the inventory structure
- Payroll split between production and non-production roles
- Labor accounts that can be allocated by department
- Shared overhead pools separated from direct costs
- Departments or classes enabled for every transaction
- Location dimension for multi-store operators
- Entity-level separation for multi-entity groups
- Intercompany accounts that reconcile both directions
- Accounts aligned to recurring reconciliation workpapers
These changes are inexpensive and reversible. Adding a class dimension and splitting a shared cost account costs a few hours of setup and a modest ongoing discipline; it does not commit you to any tax position. That asymmetry is the whole argument. Our cannabis bookkeeping and cannabis accounting engagements handle this restructuring as part of normal onboarding, and the Oregon Cannabis Accounting Guide covers the general-ledger structure in more depth.
Foundations
Inventory and COGS Still Matter
Cost of goods sold is not a 280E workaround. It is how gross income is computed, and it survives every version of this debate.
Cost of goods sold reduces gross receipts in arriving at gross income. That is true whether or not Section 280E applies to a given business in a given year. Operators who imagine that rescheduling makes inventory accounting less important have the relationship backwards: the inventory figure sets the ceiling on gross profit, drives the balance sheet, and is the first thing an examiner tests.
For Oregon retailers, the chain runs from purchase orders and manifests through receiving into the point-of-sale system, then into inventory and finally into COGS at sale. For cultivators and processors, production cost accounting adds stages — inputs, work in process, finished goods — each of which needs a costing basis and support. Our inventory accounting and Metrc reconciliation services address these separately because they answer different questions.
The distinction worth internalizing is that Metrc tracks quantities of regulated product and the general ledger tracks financial value. They should reconcile, but they are not the same record, and neither one produces a tax return by itself. The Metrc Reconciliation Playbook and COGS documentation guide go through the mechanics.
Beginning inventory
+Inventoriable cost activity for the period
−Ending inventory
=Cost of goods sold
Audit defense
Documentation and Audit Defense
A changing federal tax environment makes clean accounting more important, not less.
There is a comforting assumption circulating in the industry that rescheduling reduces audit risk. The opposite is at least as plausible. Transition periods generate positions that are novel, unlitigated and taken by thousands of taxpayers at once — precisely the conditions that attract examination attention. Whatever position you take, the question you will be asked is the same one you would be asked today: show me the records.
- Point-of-sale reports by period, retained and reconciled
- Seed-to-sale records exported and preserved by period
- Purchase orders, manifests and vendor invoices
- Receiving documentation matched to inventory entries
- Physical inventory count sheets, dated and signed
- Inventory adjustment log with stated reasons
- Payroll registers and timekeeping detail
- Lease agreements and square-footage schedules
- Utility, security and insurance invoices
- Allocation workpapers showing basis and calculation
- Written accounting and allocation policies, dated
- Bank and merchant reconciliations for every account
- Month-end close checklists and supporting schedules
- Trial balance tied to the filed return
- Prior-year workpapers retained and accessible
Action
What Oregon Cannabis Businesses Should Do Now
Everything worth doing right now is preparation that is valuable under either outcome. None of it requires taking an unsupported tax position.
- 01Get the books current and reconciled. Bank, merchant, loan and intercompany accounts should tie every month, with a close checklist behind them.
- 02Turn on department or class tracking in your accounting system and start tagging transactions now, so that 2026 has a full year of segmented data.
- 03Map point-of-sale revenue, including patient-facing versus adult-use activity, into distinct general-ledger revenue accounts rather than a single lump.
- 04Split shared cost accounts — payroll, occupancy, security, software, insurance, professional fees — so that allocation is possible without rebuilding history.
- 05Write a short, dated accounting and allocation policy describing the basis used for each shared cost, and apply it consistently every period.
- 06Reconcile inventory to physical counts on a defined cadence and reconcile Metrc quantities against accounting records, documenting differences and their causes.
- 07Rebuild COGS workpapers so each component ties to purchase records, production records where applicable, and ending inventory support.
- 08Keep payroll detail at a level that supports allocation by role and, where practical, by actual time.
- 09Preserve source documentation by period in an organized structure — manifests, invoices, count sheets, POS exports, Metrc exports.
- 10Model the effect on your business of both outcomes, so that if guidance arrives mid-year you already know what changes and what does not.
- 11Review entity structure and intercompany accounting with your CPA if you operate multiple licenses or locations, before restructuring anything.
- 12Schedule an annual current-law review rather than carrying a prior year's federal position forward by default.
This is the same preparation list we work through with retailers in Portland, Beaverton and Bend, cultivators in the Rogue and Willamette valleys, and multi-license groups operating across several cities. Sequencing matters more than speed: books first, then segmentation, then allocation policy, then workpapers. Skipping to allocation on top of unreconciled books produces documentation that cannot be defended.
Diligence
Questions Oregon Cannabis Operators Should Ask Their CPA
If your accountant cannot answer these from your existing records, the records are the problem to solve first.
Does 280E currently apply to all of our activity?
Ask for the analysis by activity and by entity for the specific tax year, based on current federal law — not a general statement about the industry.
Can our accounting system distinguish medical from adult-use activity?
If the answer is "we could pull it from the point-of-sale system," that is not the same as having it in the general ledger and the financial statements.
How are shared expenses currently tracked?
Ask which costs are allocated, on what basis, whether the basis is written down, and whether it has been applied consistently across periods.
Is payroll tracked by actual activity where appropriate?
Role-based and time-based payroll detail is one of the most commonly missing pieces and one of the hardest to reconstruct after the fact.
Can inventory and COGS be substantiated?
Ask to see the workpaper that ties beginning inventory, period cost activity and ending inventory to the return, with the underlying support attached.
Do POS, seed-to-sale and accounting records reconcile?
Ask for the most recent reconciliation, the size of the differences, and the documented explanation for them.
What documentation supports our current accounting treatment?
Every position on the return should trace to a record. Ask which positions currently do not, and what it would take to fix that.
What changes when additional federal guidance appears?
Ask what specifically would change in the chart of accounts, the close process and the workpapers — and how long implementing that would take.
Related
Related Services and Guides
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Questions
280E and Schedule III questions
Consultation
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Bring your current books, inventory records and last filed return. We will walk through what applies today, what is genuinely unresolved, and the accounting work that pays off either way.