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

Does 280E Still Apply in 2026?

The short answer: do not assume it does not. Internal Revenue Code Section 280E is still on the books, and by its own terms it applies to a trade or business that consists of trafficking in controlled substances listed in Schedule I or Schedule II of the federal Controlled Substances Act. Whether a particular cannabis business sits inside or outside that description for a particular tax year depends on the federal scheduling status in effect for that year, the products and activities involved, and guidance that has not been fully issued.

What has changed is the direction of the conversation. Rescheduling cannabis to Schedule III has been formally proposed at the federal level, and if it takes effect the plain language of 280E — which reaches Schedule I and II substances — would no longer describe cannabis in the same way. That is a significant shift in the underlying premise of a decade of cannabis tax practice.

What has not changed is everything that turns a premise into a filed return: effective dates, treatment of open prior years, accounting-method change procedures, substantiation standards for newly relevant deductions, and how examiners will evaluate allocations between activities. This is an unresolved area. Until Treasury and the IRS publish applicable guidance, the treatment described here should be evaluated with a tax professional against current law and the facts of the specific business and tax period.

The operational point for a Massachusetts operator is that the accounting decisions worth making today are the ones that are correct under either outcome. If your ledger can already separate medical from adult-use activity, separate production costs from selling and administrative costs, and show how shared overhead was allocated, you are prepared for guidance whenever it arrives. If it cannot, that gap has to be closed by reconstruction later, which is always weaker.

Medical vs. Adult-Use Cannabis: Why the Difference Matters for 280E

Start with a correction that saves a lot of confusion: Section 280E does not contain the words medical or recreational. It is written around federal scheduling. A state calling a transaction a medical sale does not, on its own, change the federal deduction analysis.

The distinction still matters, and for reasons that are more accounting than statutory. It matters because activities that are economically and operationally distinct are the raw material for any argument that a business carries on more than one trade or business, and because state tax, licensing, and reporting obligations already run along that line. It also matters because if federal treatment ever diverges by product category, patient status, or license type, the only businesses able to act on that divergence will be the ones whose books already reflect it.

How the Massachusetts market is actually structured

Massachusetts runs two programs side by side under the Cannabis Control Commission. The medical program operates through Medical Marijuana Treatment Centers serving registered patients and caregivers, governed principally by 935 CMR 501. The adult-use market operates under Chapter 94G and 935 CMR 500, covering retailers, cultivators, product manufacturers, transporters, delivery licensees, and testing laboratories.

Crucially for accounting, the two are frequently co-located. A large share of the state's established operators hold both medical and adult-use authority and serve both populations from the same building, often with the same staff, the same security contract, the same point-of-sale platform, and inventory tracked through the same seed-to-sale environment. That is exactly the fact pattern that makes allocation hard.

• Adult-use retail sales carry the state marijuana excise, state sales tax, and a local option tax where the municipality has adopted it — confirm current rates with the Department of Revenue for your periods
• Medical sales through a Treatment Center are treated differently for state tax purposes, so revenue segmentation is already a state-tax requirement, not just a federal planning idea
• Host community agreements, municipal reporting, and Commission reporting all draw on records that should tie back to the general ledger
• Seed-to-sale tracking covers product movement across both programs and is a reconciliation source, not a substitute for accounting records

For deeper state-level detail on rates and filing mechanics, see the Massachusetts cannabis tax guide, and for the underlying statutory explanation of the provision itself, the 280E explainer.

The Mixed-Use Cannabis Accounting Problem

Consider a hypothetical Massachusetts operator. It holds both a Medical Marijuana Treatment Center registration and an adult-use retail license at a single Worcester County address, with a separate cultivation site elsewhere in the state. Roughly a fifth of dispensed volume goes to registered patients; the rest is adult-use. One staff roster covers both counters. One lease covers the building. One security contract, one alarm system, one point-of-sale platform, one insurance policy, one bookkeeper.

Ask that operator today how much of its rent, payroll, and security cost supports medical activity versus adult-use activity, and in most cases the honest answer is that the books were never built to say. Revenue may be split because the point-of-sale system and state tax reporting force the split. Cost almost never is.

What has to be answerable

• Revenue segmentation — medical and adult-use recorded to distinct income accounts, tying to point-of-sale reporting and to state tax filings
• Departments or classes — a ledger dimension that lets any transaction be attributed to an activity, not just a monthly journal entry after the fact
• Chart of accounts — direct production costs, direct retail costs, and shared overhead held in separate account ranges rather than a single operating-expense block
• Direct expenses — costs that belong wholly to one activity, coded there at entry rather than allocated later
• Indirect and shared expenses — rent, utilities, security, software, insurance, management compensation, professional fees, allocated by a stated method
• Payroll — hours or roles coded to actual function, with the underlying time records retained, not an estimated percentage applied to a lump payroll total
• Inventory — quantities and cost by category, with counts and adjustments documented
• Cost of goods sold — a costing method applied consistently and traceable from purchase or production through to sale
• Point-of-sale records — transaction-level detail retained and reconcilable to deposits and to recorded revenue
• Seed-to-sale records — product movement reconciled to inventory balances at defined intervals
• Contemporaneous documentation — written policy, invoices, leases, time records, and the workpapers showing how each period's allocation was computed

The related question — whether medical and adult-use operations amount to separate trades or businesses for federal purposes — is a facts-and-circumstances analysis, not a labeling exercise. Courts have looked at how genuinely distinct the operations are: separate books, separate staff, separate space, separate economics, separate customers. An operator that simply relabels two counters in one room has not created a second trade or business, and should not plan as though it has. This is an unresolved area. Until Treasury and the IRS publish applicable guidance, the treatment described here should be evaluated with a tax professional against current law and the facts of the specific business and tax period.

Cannabis 280E Expense Allocation and Apportionment

Under current 280E practice, most operators spend their effort on one boundary: what is properly inventoriable cost, and what is a disallowed deduction. If federal treatment shifts, a second boundary becomes just as consequential — how costs are apportioned among activities that may be treated differently from one another.

These are the line items where that apportionment gets contentious, and where documentation does the heavy lifting:

• Rent and occupancy — a single lease covering cultivation, processing, retail floor, vault, and office space, where square footage by function is the natural driver but only if it was measured and recorded
• Payroll — budtenders serving both patient and adult-use customers, cultivation staff, compliance staff, and executives whose time spans everything
• Management and executive compensation — often the largest single item with no obvious driver, and correspondingly the one most likely to be questioned
• Security — guards, monitoring, and access control that protect the whole premises regardless of which program a given sale falls under
• Utilities — electricity dominated by cultivation lighting and HVAC, which usually means square footage alone understates the production share
• Software — seed-to-sale integration, point-of-sale, accounting, and payroll subscriptions serving multiple functions
• Insurance — general liability, product liability, and property coverage written at the entity level
• Professional services — legal, accounting, and consulting fees that may relate to a specific activity or to the enterprise as a whole
• Shared facilities — vaults, loading areas, break rooms, and corridors that serve every activity and need a stated treatment

Nothing on that list is deductible because it appears here. The point is narrower and more useful: each of these costs should be traceable to a driver, and that driver should be recorded when the cost is incurred. Square footage should come from a measured floor plan. Headcount and hours should come from payroll and time records. Transaction counts should come from point-of-sale exports. Those artifacts, retained by period, are what make an allocation defensible rather than asserted.

This is ordinary cost-accounting discipline applied to an unusual tax environment. Our cannabis bookkeeping and financial reporting work is where that structure actually gets built into the ledger.

Chart of Accounts After Schedule III

A chart of accounts built solely to survive 280E tends to be blunt: capitalize what can be capitalized, dump the rest into operating expense, and stop. That design answers one question. A structure that anticipates change answers several.

• Revenue — medical and adult-use as distinct accounts or distinct classes, with wholesale and retail separated where both exist, so state tax filings and federal analysis draw from the same source
• Inventory — raw material, work in process where cultivation or manufacturing applies, and finished goods, carried by category rather than as one balance
• Cost of goods sold — mirrored to the inventory structure so movement between the balance sheet and the income statement is traceable
• Payroll and labor — direct production labor, direct retail labor, compliance, and administration held separately, with the same breakdown carried in the payroll system
• Shared overhead — a defined range of accounts for costs that are known to require allocation, so they are never silently commingled with direct costs
• Departments or classes — the ledger dimension that carries medical versus adult-use, and cultivation versus manufacturing versus retail
• Locations — separate dimensions per licensed site, which also supports municipal and host community reporting
• Reconciliations — bank, point-of-sale, seed-to-sale, and inventory reconciliations performed and retained on a fixed monthly cadence
• Supporting workpapers — the allocation computation for each period, filed with the close package rather than assembled at year end

None of this is speculative tax positioning. Every item above improves the quality of management reporting under current law and would be prerequisite work if federal treatment changes. That is the test to apply to any restructuring proposed to you right now: is it useful regardless of how the federal question resolves?

For how this looks in practice by license type, see dispensary accounting, cultivation accounting, and manufacturing accounting.

Inventory and COGS Still Matter

There is a temptation to read rescheduling as making inventory accounting less important. It does not. Cost of goods sold is not a 280E workaround; it is the ordinary mechanism by which any business measures gross profit. Every set of financial statements, every lender package, every valuation, and every tax return depends on it.

What 280E did was raise the stakes on getting it right. If the stakes fall, the underlying requirement does not: inventory has to be counted, valued on a stated method, reconciled to the tracking system, and rolled forward period to period in a way that ties to purchases, production, sales, and adjustments.

• A written costing policy that states the method and what costs are capitalized, applied consistently across periods
• Physical counts on a defined cadence, with variances investigated and documented rather than absorbed by a plug entry
• An inventory rollforward reconciling opening balance, additions, cost of sales, adjustments, and closing balance
• Reconciliation between the accounting inventory balance and seed-to-sale quantities, with differences explained
• Production cost accumulation for cultivators and manufacturers, including labor and facility costs attributable to production
• Purchase and vendor documentation retained and matched to recorded cost

Seed-to-sale reconciliation is the bridge between the operational system and the ledger, and the Massachusetts cannabis accounting guide walks through the close mechanics in detail.

Documentation and Audit Defense

A changing tax environment increases examination interest rather than reducing it. Periods that straddle a rule change, positions that depend on allocations, and businesses whose treatment shifts year over year are precisely the fact patterns that attract review. The documentation set below is what makes that review manageable.

• Point-of-sale reports — daily and periodic transaction detail, tied to deposits and to recorded revenue, segmented by program
• Seed-to-sale records — transfers, adjustments, waste, and inventory reports retained per period
• Payroll records — registers, time detail, and the functional coding that supports labor allocation
• Invoices and vendor records — for purchases, services, and anything appearing in an allocated cost pool
• Inventory records — counts, valuations, rollforwards, and variance explanations
• Allocation workpapers — the driver data, the computation, and the resulting entry, prepared in the period it applies to
• Written accounting policies — costing method, allocation method, capitalization thresholds, and revenue recognition
• Supporting schedules — fixed assets, leases, accruals, prepaid balances, and intercompany activity
• Reconciliations — bank, cash, point-of-sale, seed-to-sale, and balance-sheet accounts, completed monthly and retained

Retention deserves specific attention right now. Prior tax years are generally evaluated under the law applicable to those years, so a future federal change does not make historical records disposable. If anything, open periods under the current regime need their support preserved more carefully, not less. Our audit representation and audit preparation material covers what an examination actually asks for.

What Massachusetts Cannabis Businesses Should Do Now

The unproductive response to an unresolved federal question is to guess at the answer and restructure around the guess. The productive response is to close the gaps that make any answer hard to implement. For a Massachusetts operator, that work is concrete.

Segment activity where the state already forces a line

Massachusetts already distinguishes medical and adult-use activity for tax, licensing, and Commission reporting. If your point-of-sale system splits those transactions but your general ledger records one revenue line, the cheapest available improvement is to carry that split into the accounting system and reconcile it monthly. Co-located Treatment Center and adult-use retail operations should be separable in the books even though they share a roof.

Build the cost drivers before you need them

Measure the floor plan by function and keep the drawing. Code payroll to actual role and retain time detail. Pull transaction counts by program from the point-of-sale platform each month. None of these steps takes a tax position; all of them are prerequisites to supporting one later.

Bring the books current and keep them reconciled

Bank, cash, point-of-sale, and inventory reconciliations on a monthly cadence, with a close package retained per period. An operator with twelve reconciled months and a clean trial balance can respond to new guidance in weeks. An operator eight months behind cannot.

Reconcile inventory to the tracking system

Quantities in the seed-to-sale environment and cost in the ledger should be reconciled at defined intervals, with differences explained in writing. This is the single most common weakness we see in Massachusetts engagements, and it undermines COGS under any federal regime.

Document shared costs in writing

A one-page allocation policy naming each shared cost pool, its driver, and its computation is worth more than a sophisticated method nobody wrote down. Apply it consistently and file the computation with each close.

Preserve source documentation for open periods

Do not thin the files in anticipation of a rule change. Prior periods stand on their own law and their own records.

Be ready to implement, not to predict

When Treasury and the IRS publish guidance, the businesses that benefit first will be the ones whose accounting can already produce the required figures. Positioning now means readiness, not a bet. This is an unresolved area. Until Treasury and the IRS publish applicable guidance, the treatment described here should be evaluated with a tax professional against current law and the facts of the specific business and tax period.

Operators across the state work with us remotely on cloud accounting systems — see Boston, Worcester, and Springfield, or the full list of service areas.

Questions Massachusetts Cannabis Operators Should Ask Their CPA

Bring these to your next meeting. The answers tell you more about the state of your records than any general article can.

• Does 280E currently apply to all of our activity, and how are you evaluating that for each open tax period?
• Can our accounting system distinguish medical from adult-use activity today, at the revenue level and at the cost level?
• How are shared expenses currently tracked, and what driver supports each allocation?
• Is payroll coded to actual function, and do we retain the time records behind that coding?
• 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, and how often is that reconciliation performed?
• What written documentation supports our current accounting treatment and our costing policy?
• Which accounting changes would we need to make if federal guidance changes the treatment, and how long would they take?
• How are we handling open prior years, and what records are we retaining to support them?
• What is our plan for the first tax period after any change in federal treatment?