Does 280E Still Apply in 2026? Medical vs. Adult-Use Cannabis After Schedule III

The short answer is that Section 280E has not been repealed, and no cannabis operator should plan on the assumption that it has stopped applying to them. The section denies deductions and credits for a trade or business trafficking in a controlled substance listed in Schedule I or Schedule II of the federal Controlled Substances Act. It has always keyed off that federal classification, not off whether a state calls a transaction medical, recreational, adult-use or anything else.

What has changed is the surrounding environment. Federal rescheduling of cannabis to Schedule III has been the subject of an active administrative proceeding, and a substance in Schedule III would sit outside the words of Section 280E. That is why the question is being asked at all. What has not happened is the arrival of settled treatment an operator can rely on: the effective timing, the treatment of open and prior tax years, the handling of periods that straddle a change, and the documentation expectations that would follow are unresolved as of this writing.

For the underlying mechanics of the section itself, the site's existing explainer, 280E explained, remains the starting point. For help applying it to a filed return, see 280E tax compliance.

The federal statute does not distinguish medical from adult-use activity. Courts have applied Section 280E to medical cannabis businesses on the same basis as any other plant-touching operation, because the classification of the substance, not the purpose of the sale, is what the statute addresses. Anyone reading that a medical license exempts a business from the section is reading something the statute does not say.

The distinction still matters, and for a practical reason. Where a federal change is possible, the businesses able to respond to it are the ones whose books already show which revenue, which costs and which staff hours belong to which activity. A business with one undifferentiated revenue line and one undifferentiated overhead pool has no way to support a split, whatever the eventual rules say. Record structure is the variable an operator controls; federal treatment is not.

Oklahoma's commercial market is structured as a medical program. Licensing and operational rules are administered by the Oklahoma Medical Marijuana Authority, state tax administration runs through the Oklahoma Tax Commission, and a proposed adult-use measure was rejected at the ballot. Oklahoma operators therefore do not face an in-state medical versus adult-use split today. Three situations still make this article directly relevant here:

• Plant-touching and non-plant-touching revenue in the same entity or the same group — consulting, real estate, equipment sales, management fees or hemp-derived product lines sitting alongside licensed activity.
• Multi-state operators headquartered or licensed in Oklahoma with activity in states that authorize both medical and adult-use sales, where the allocation problem already exists.
• Forward planning: if Oklahoma's market structure ever changes, or if federal treatment diverges by activity, the accounting separation has to already exist to be usable.

Program structure, license categories and rules are set by the state and are revised periodically. Confirm current requirements directly with the Oklahoma Medical Marijuana Authority rather than relying on any description here.

Consider an Oklahoma group with a licensed dispensary, a small grow supplying it, and a separate consulting line that advises other operators. Three activities, one management team, one bookkeeper, one office, one insurance policy, one accounting subscription and a security contract covering two sites. Revenue is easy to separate. Nearly everything else is not, unless someone decided in advance that it would be.

That is the mixed-use problem in miniature, and it is the same problem an operator in a dual medical and adult-use state faces at a larger scale. The question is never whether the activities are different — they obviously are. The question is whether the accounting records prove it in a way a reviewer would accept years later.

A few specifics are worth calling out. Payroll is usually the largest shared cost and the one most often recorded as a single figure; where staff genuinely work across activities, a time record by function is worth far more than an estimated percentage applied afterwards. Rent is best supported by a measured square-footage schedule tied to the lease. Inventory and cost of goods sold belong to the plant-touching activity and should be substantiated on their own terms — see inventory and cost accounting and METRC reconciliation.

Expense allocation has always been part of cannabis tax work, because the line between inventoriable cost and non-deductible operating expense had to be drawn somewhere. If federal treatment changes for some activities or some periods and not others, that same allocation work becomes the mechanism by which the difference is measured. The costs that cause the most difficulty are predictable:

• Rent and occupancy for a facility housing more than one activity, or a retail floor and a back-of-house production area under one lease.
• Payroll for staff whose work crosses activities, and management compensation that covers the whole group.
• Security services, alarm monitoring and camera systems covering shared premises.
• Utilities, particularly where cultivation load and retail load are on one meter.
• Software: point-of-sale, seed-to-sale, accounting, payroll and scheduling subscriptions bought once for everything.
• Insurance policies written at the entity or group level rather than per activity.
• Professional services — accounting, legal and consulting fees engaged for the business as a whole.
• Shared facilities and equipment used intermittently by more than one activity.

The word that matters throughout is contemporaneous. An allocation recorded when the cost was incurred, with the measurement that supported it, is a record. The same percentage produced two years later during an examination is an assertion. Nothing on this page promises that any particular expense will be deductible; the point is narrower and more durable — an expense that cannot be substantiated and attributed is not going to help under any set of rules.

Most cannabis charts of accounts were built for a single objective: get everything defensible into inventory and cost of goods sold, because that was the only path to cost recovery under Section 280E. That design is not wrong, but it is narrow. A change in federal treatment would put real weight on the operating expense side of the ledger for the first time, and a chart of accounts with three catch-all overhead accounts cannot carry it.

• Revenue separated by activity and, where relevant, by license, location and product category rather than posted as one line.
• Inventory accounts by stage — raw material or incoming product, work in process where production occurs, and finished goods.
• Cost of goods sold built from a documented costing method rather than as a balancing figure.
• Payroll and labor split between direct production labor and general and administrative payroll, with department detail.
• Shared overhead grouped so that allocated and directly attributable costs are distinguishable at a glance.
• Departments or classes for each activity, and locations for each licensed premises.
• Reconciliation accounts and clearing accounts that are actually cleared each month rather than accumulating unexplained balances.
• Workpaper references tying account balances to the supporting schedules retained for the period.

None of these changes commit a business to a tax position. They make the books capable of expressing whatever position the eventual rules require. Restructuring in the other direction — reclassifying prior costs to produce a hoped-for outcome — is a different exercise entirely and should not be undertaken outside an engagement with the preparer who will sign the return. The recurring side of this work is covered under cannabis bookkeeping and, for retail operations, dispensary accounting.

It would be a mistake to read rescheduling discussion as a reason to relax inventory discipline. Cost of goods sold is not a Section 280E concept; it is an inventory accounting concept that exists independently of the section, and it will continue to determine gross margin, taxable income and the credibility of the financial statements whatever happens federally. Open prior years are also still governed by the rules that applied to them.

For Oklahoma operators specifically, the inventory story is inseparable from the state's seed-to-sale environment. Tracking records, point-of-sale records and accounting records describe the same product from three angles, and they need to agree. Where they do not, the difference should have a written explanation retained with the period rather than an adjusting entry that makes it disappear. The relevant pages here are the METRC and seed-to-sale guide, inventory and cost accounting, and the Oklahoma cannabis accounting guide. Production-side costing is covered under cultivation accounting and manufacturing accounting.

A changing federal tax environment tends to increase examination interest rather than reduce it, because transitions create positions that have to be explained. The practical consequence is that clean accounting becomes more valuable during a period of change, not less. The records that carry the weight are unglamorous and specific:

• Point-of-sale reports by day and period, tying to deposits and to recorded revenue.
• Seed-to-sale records for receiving, transfers, production events, waste and sales.
• Payroll registers with department or function detail, and the time records behind them.
• Vendor invoices and purchase records supporting product cost and operating expenses.
• Physical inventory counts, count sheets, variance explanations and the adjustments posted from them.
• Allocation workpapers showing the basis used, the measurement behind it and the period applied.
• A written accounting policy describing costing method, allocation approach and close procedures.
• Supporting schedules for material balance sheet accounts, prepared as part of each close.
• Reconciliations between tracking, point-of-sale, bank and general ledger records, signed and dated.

Preparation for an examination is a records exercise long before it is an argument. The existing audit preparation guide covers the process, and audit representation covers professional support if a notice arrives.

The useful posture for an Oklahoma licensee is readiness without speculation. Nothing below requires taking a position on unresolved federal treatment, and everything below improves the business's records regardless of the outcome.

Operators across the state's larger markets face the same list. Local pages for Oklahoma City, Tulsa, Norman and Broken Arrow describe how the work is delivered in each area, and the Oklahoma cannabis tax guide covers the state tax structure that continues to apply irrespective of federal developments.

These are worth raising at a regular meeting rather than during a filing crunch. The answers tell you how exposed the business is to a change it cannot control.

• Does Section 280E currently apply to all of our activity, or only to part of it, and how did we reach that conclusion?
• Can our accounting system distinguish activities — and could it distinguish medical from adult-use activity if that ever became relevant to us?
• How are shared expenses tracked today, what basis is used, and where is that basis documented?
• Is payroll captured by actual function or department, or allocated after the fact by estimate?
• Can our inventory balances and cost of goods sold be substantiated from source records?
• Do point-of-sale, seed-to-sale and accounting records reconcile each month, and who reviews the result?
• What documentation supports our current accounting treatment if it were examined?
• What would change in our books if additional federal guidance arrived mid-year, and who would implement it?
• Are prior open years in a condition we would be comfortable defending?
• How will we evaluate whether an amended return is appropriate, and on whose advice?

If those questions are difficult to answer, the gap is usually in record structure rather than in tax knowledge. The relevant service pages are 280E tax compliance, cannabis tax preparation and fractional CFO support where the review needs to sit above the bookkeeping level.