Does 280E still apply in 2026?
Section 280E disallows deductions and credits for a trade or business that consists of trafficking in controlled substances within Schedule I or Schedule II of the Controlled Substances Act. Marijuana's placement in that list is the entire hook. If and when a final federal rule moves marijuana to Schedule III and takes effect, the statutory predicate for 280E falls away prospectively for cannabis businesses.
As of this writing that rule is not final and effective, so the operating assumption for a Missouri operator's current federal return is that 280E applies. Nothing in a Missouri license issued under Article XIV changes the federal analysis, and Missouri's distinction between medical and adult-use sales has never, by itself, changed federal treatment.
What is unresolved is nearly everything about the transition. There is no published Treasury or IRS guidance establishing how a tax year straddling an effective date is split, whether any relief applies to prior years, how inventory capitalized under 280E-era methods is treated going forward, or whether medical and adult-use activity would ever be treated differently for federal purposes. Anyone telling you those answers exist today is describing a prediction, not law.
Operators should also not assume that all cannabis activity automatically receives identical federal treatment forever. Federal scheduling, state license category, entity structure and the actual nature of each revenue stream — plant-touching retail, wholesale, real estate, management services, consumer products without cannabinoids — can pull in different directions. That is an accounting question long before it is a filing question.
- Established: 280E applies while marijuana remains in Schedule I
- Changed: rescheduling is an active federal process, not a hypothetical
- Unresolved: effective-date mechanics, straddle years, prior years, inventory transition
- Practical: your records must be able to support either outcome without reconstruction
Medical vs. adult-use cannabis: why the difference matters for 280E
Federally, medical and adult-use cannabis have been treated the same under 280E, because the Controlled Substances Act does not carve out state-authorized medical use. A Missouri medical patient sale and a Missouri adult-use sale of the same eighth have historically produced the same federal deduction outcome.
In Missouri the two programs are nonetheless distinct in every way that touches your books. Article XIV created a medical program regulated by the Division of Cannabis Regulation within the Department of Health and Senior Services, then added adult-use with its own license class, tax rate and compliance overlay. Adult-use retail sales carry a 6% state cannabis tax collected through the Department of Revenue, with local government add-ons permitted; qualifying medical sales carry a 4% state rate and different local treatment. Most Missouri retailers hold comprehensive licenses and serve both patient and adult-use customers from one building, one staff and one inventory system.
That is exactly the structure that makes the federal question consequential. If federal treatment ever diverges between activity types — or if a rule takes effect partway through a year — the operator who can already segment revenue, cost and overhead by program has a defensible starting point. The operator who cannot is asking a preparer to reconstruct allocations after the fact, which is the weakest possible audit posture.
This is a preparation argument, not a filing position. Segmenting medical and adult-use activity in your accounting system does not create a deduction and should never be presented as one.
The mixed-use cannabis accounting problem
Consider a Missouri comprehensive dispensary in the Kansas City metro. It serves patients and adult-use customers at the same counter, buys from the same wholesalers, runs one Metrc license tree, and pays one general manager, one lease and one security contract. Roughly 20% of its revenue is patient sales; the mix moves every month.
Ask that business to produce a defensible split of its operating costs between medical and adult-use activity and, in most cases, nothing exists. The point-of-sale system knows which transactions were patient sales because the tax rate differs. The general ledger usually does not — revenue lands in one account, payroll lands in one account, and rent is a single monthly entry.
Closing that gap is ordinary accounting work, done contemporaneously rather than at year-end. Direct costs follow the activity that caused them. Shared costs need a documented, consistently applied basis and a workpaper explaining why that basis is reasonable. Inventory and cost of goods sold need to reconcile from Metrc to the POS to the ledger regardless of program.
There is no IRS-approved allocation methodology for medical versus adult-use cannabis activity. Do not adopt one someone else claims is blessed, and do not let a software vendor's default become an undocumented policy.
- Segment revenue by program at the POS and map it to distinct ledger accounts
- Use departments or classes for medical, adult-use and non-plant-touching activity
- Separate directly attributable expenses from genuinely shared overhead
- Track payroll by actual activity where scheduling and time records make that real
- Keep contemporaneous documentation of every allocation basis and any change to it
- Preserve POS exports, Metrc reports and inventory reconciliations as source records
Cannabis 280E expense allocation and apportionment
The hard part of any mixed operation is the shared cost layer. Rent on a single building, a general manager who oversees both programs, a security contract covering one facility, utilities on one meter, seed-to-sale and POS software licensed per location, insurance, and professional fees are not naturally attributable to one activity.
Allocation and apportionment questions are decided on facts. A square-footage basis can be reasonable for rent when the space genuinely serves distinguishable functions. A revenue basis can be reasonable for management overhead. Headcount or actual hours can be reasonable for payroll. What makes any of them survive scrutiny is not the elegance of the formula — it is that the basis was chosen for a stated reason, applied consistently, computed from records that exist independently, and documented at the time.
Allocating a cost does not make it deductible. Under current law 280E disallows deductions for the plant-touching trade or business regardless of how carefully the cost is apportioned, and cost of goods sold remains governed by the inventory rules, not by an allocation preference. The reason to build the allocation infrastructure now is that it is the same infrastructure any future federal guidance is likely to demand, and it cannot be created retroactively.
- Rent and occupancy — square footage or documented functional use
- Payroll and management — actual hours, scheduling records or role-based assignment
- Security, utilities and facilities — facility-level drivers, not round percentages
- Software and technology — license or seat counts where the vendor billing supports it
- Insurance and professional services — policy or engagement scope where identifiable
- Every basis: written policy, supporting computation, consistent period-over-period application
Chart of accounts after Schedule III
A cannabis chart of accounts built only to survive 280E tends to be blunt: capture everything possible in inventory, dump the rest into a disallowed bucket. A chart of accounts built for an uncertain transition needs more resolution, so the same ledger can produce more than one view of the year.
The goal is that a straddle year, a program-level margin question or a future guidance requirement can each be answered by running a report rather than rebuilding history. That is achievable in the systems Missouri operators already run, and it is far cheaper to implement at a period boundary than mid-year.
- Separate revenue accounts for medical, adult-use, wholesale and non-cannabis activity
- Inventory accounts by stage — raw materials, work in process, finished goods
- COGS accounts that mirror the inventory build rather than a single lump line
- Payroll segmented between inventoriable production labor and selling or administrative labor
- A dedicated shared-overhead pool with a documented allocation routine
- Departments, classes and locations applied consistently across every transaction type
- Standing reconciliation schedules and workpapers stored with the period close
Inventory and COGS still matter
Whatever happens federally, cost of goods sold is not a deduction — it is part of computing gross income — and it is substantiated by inventory accounting under Sections 471 and 263A, not by assertion. A rescheduling event does not retire that requirement; it removes the pressure to push every possible dollar into inventory and replaces it with a plain accuracy standard.
For Missouri producers, that means the cultivation and manufacturing cost build has to be real: direct materials, direct labor and allocable indirect production costs, tracked by batch and rolled into finished goods at defensible unit costs. For retailers it means invoice cost, inbound freight and permitted acquisition costs, tied to received quantities.
It also means the three systems have to agree. Metrc is the operational record of plant and package movement, the POS is the record of sale, and the general ledger is the financial record. Reconciling them monthly is the single most valuable habit a Missouri operator can build, and it is covered in depth in the inventory and Metrc material on this site.
Documentation and audit defense
A changing federal tax environment makes clean accounting more important, not less. Periods will be examined under the law that applied to them, transitions invite scrutiny of exactly where a taxpayer drew the line, and taxpayers who change methods or allocations attract questions about what changed and why.
Documentation created while events are happening carries weight that reconstruction never does. The file you want is boring and complete.
- Monthly POS reports reconciled to deposits and to recorded revenue by program
- Metrc package, transfer and adjustment reports tied to inventory movement
- Payroll registers with department or activity coding and supporting time records
- Vendor invoices, freight documentation and purchase receipts matched to receipts in inventory
- Physical count sheets, variance explanations and inventory valuation workpapers
- Allocation workpapers showing the basis, the computation and the period applied
- Written accounting policies, including any change and the date it took effect
- Period close checklists and signed-off reconciliation schedules retained by month
What Missouri cannabis businesses should do now
Nothing in this section requires taking a tax position on rescheduling. All of it is accounting preparation that improves your records under current law and positions you to implement future guidance quickly.
For a Missouri comprehensive licensee, the highest-value work is usually program segmentation and the shared-cost policy, because those are the two things that cannot be recreated later. For cultivators and manufacturers, it is the batch-level cost build. For multi-location retailers across Kansas City, St. Louis and Springfield, it is consistent department and location coding so that consolidated and location-level views both hold up.
Coordinate the federal work with the Missouri side. Article XIV permits a state income tax deduction for expenses that 280E disallows federally, which requires a maintained reconciliation between the federal and Missouri expense bases — a schedule that becomes more, not less, important during a transition year.
- Keep books current and closed monthly rather than reconstructed annually
- Segment medical, adult-use and any non-plant-touching activity in the ledger
- Adopt a written shared-cost allocation policy and apply it consistently
- Track payroll by actual activity where scheduling and time records support it
- Reconcile Metrc, POS and the general ledger every month and keep the workpapers
- Substantiate inventory and COGS with counts, valuations and batch cost records
- Maintain the federal-to-Missouri expense reconciliation for the Article XIV deduction
- Preserve the ability to cut the ledger at any date, in case a straddle year arrives
- Revisit the plan when actual Treasury or IRS guidance is published — not before
Questions Missouri cannabis operators should ask their CPA
These are diagnostic. If the answers are vague, the gap is in the accounting system rather than in the tax law.
- Does 280E currently apply to all of our activity, or only to part of it?
- Can our accounting system distinguish medical from adult-use revenue and cost today?
- How are shared expenses tracked, and what basis is used to allocate them?
- Is payroll tracked by actual activity where our records genuinely support it?
- Can our inventory and COGS be substantiated from source documents?
- Do Metrc, the POS and the general ledger reconcile every month?
- What documentation supports our current accounting treatment if examined?
- Could we split a tax year at an arbitrary effective date without rebuilding the ledger?
- Are we claiming the Missouri Article XIV state deduction, with a maintained reconciliation?
- What accounting changes would we need to make when federal guidance is published?
Frequently asked questions
Does 280E still apply in 2026?
For most cannabis businesses, yes. Section 280E turns on marijuana's placement in Schedule I or II of the Controlled Substances Act, and the federal reclassification process is not complete. Until a final rule is effective, 280E is the law that governs the return in front of you.
Does 280E still apply to recreational cannabis?
Yes. Federal law does not distinguish adult-use from medical cannabis for 280E purposes. A Missouri adult-use retail sale and a medical patient sale have historically received the same federal treatment.
Does 280E apply differently to medical marijuana?
Not under current federal law. State medical programs, including Missouri's, do not remove a business from 280E. Whether any future federal guidance draws a distinction is unresolved.
What happens to 280E after Schedule III?
If a final rule moves marijuana to Schedule III and takes effect, the statutory basis for applying 280E to cannabis businesses falls away prospectively. The mechanics — straddle years, prior years, inventory transition — have not been addressed by published Treasury or IRS guidance and remain unresolved.
What is a mixed-use cannabis business for 280E purposes?
Informally, an operator with more than one meaningfully distinct activity — for example a Missouri comprehensive licensee selling to both patients and adult-use customers, or a plant-touching business alongside a separate non-plant-touching line. It is an accounting description, not a defined federal tax category.
How should a cannabis business track shared expenses?
Choose an allocation basis that reflects what actually drives the cost — square footage for rent, hours for labor, facility drivers for utilities — write the policy down, apply it consistently, and keep the supporting computation with each period close.
Can cannabis businesses deduct rent after Schedule III?
Unresolved, and it depends on final rule timing and future guidance. Under current law, rent for a plant-touching trade or business is disallowed by 280E except to the extent it is properly inventoriable. Do not plan around a deduction that has not been established.
How does Schedule III affect cannabis accounting?
Mostly by raising the value of resolution in your records. Segmented revenue, a documented shared-cost policy, reconciled inventory and the ability to cut the ledger at any date are what let you respond to guidance quickly instead of reconstructing history.
Do dispensaries still need specialized 280E accounting?
Yes. Retailers have the narrowest inventoriable cost base, the highest transaction volume and the most reconciliation surface between Metrc, the POS and the ledger. That work is unchanged by a pending federal reclassification.
Should cannabis businesses change their chart of accounts after Schedule III?
Most will benefit from more detail — separate revenue by program, staged inventory accounts, segmented payroll and a defined shared-overhead pool. Make structural changes at a period boundary and document the effective date.
How does this interact with Missouri's Article XIV state deduction?
Missouri permits a state income tax deduction for expenses disallowed federally by 280E. Claiming it correctly requires a maintained reconciliation between the federal and Missouri expense bases, which becomes more important, not less, if federal treatment changes mid-year.
Does Missouri's 6% adult-use and 4% medical cannabis tax change the federal analysis?
No. Those are Missouri Department of Revenue obligations administered separately from federal income tax. They do matter to your books, because the rate difference is often the only place your systems already distinguish medical from adult-use activity.
