What 280E Tax Planning Covers
280E tax planning is the process of coordinating accounting, inventory, cost of goods sold support, documentation and tax workpapers so a cannabis business can apply current federal tax rules appropriately where Section 280E applies. It is engagement work performed across the year rather than an adjustment made at filing.
For businesses subject to Section 280E, the practical constraint is rarely the rule itself — it is whether the records can support the treatment applied. Our scope starts with the ledger and the inventory records, then builds the cost of goods sold support and the workpapers that connect them to the return.
- Monthly accounting reviewed with tax treatment in mind, not only reporting
- Inventory accounting and valuation support tied to the general ledger
- Documented cost treatment and written methodology in the permanent file
- Tax workpapers structured so every figure traces back to a transaction
- Estimated tax coordination modeled against current-year results and liquidity
Supported COGS, Not Relabeled Expense
Where Section 280E applies, cost recovered through cost of goods sold is determined by inventory accounting rather than by how an operating expense is labeled. Which costs are properly absorbed into inventory is fact-specific and depends on the taxpayer's activities, its accounting methods and current federal tax treatment.
We build supported COGS: documented cost treatment, applied consistently, traceable to purchase and production records, and explained in a workpaper a reviewer can follow. Where treatment is genuinely uncertain, we document the uncertainty rather than presenting it as settled.
Retail License Facts
For a retail license in Albuquerque, Santa Fe or anywhere else in the state, product cost is built from invoice cost and the acquisition costs the applicable rules permit, supported by purchase, receiving and inventory records rather than by an after-the-fact percentage.
Producer and Manufacturer Facts
Producer, microbusiness, manufacturing and vertically integrated licensees accumulate production cost through inputs, labor and facility activity. Whether a particular cost is properly absorbed into inventory for federal tax purposes is fact-specific, so the method is written down, applied consistently and supported by production records.

Planning Continuously, Not Scrambling in April
The support behind a 280E position is created during the year, when documentation still exists and variances can still be explained. We review classification and inventory activity each period, revisit positions quarterly, and coordinate estimated payments against actual results instead of a stale prior-year figure.
The two most expensive patterns we see across New Mexico operators are underfunding federal estimated payments while state excise and gross receipts obligations pull cash the other direction, and taking cost positions with no paper trail behind them. Both are far cheaper to prevent than to remediate.
- Quarterly effective-rate and cash-tax review
- Reasonable compensation and distribution review
- Entity analysis where a genuinely separate trade or business exists
- Written methodology memos kept in the permanent tax file
Substantiation and Examination Readiness
Cannabis returns attract attention, and the taxpayer generally carries the burden of substantiating inventory cost. Preparing for that possibility is a documentation discipline, not a promise about outcomes — no accountant can guarantee how an examination resolves.
We keep a standing support file year-round: inventory valuation reconciled to seed-to-sale package activity, labor support backed by function coding and time records, fixed-asset schedules, intercompany agreements, and memoranda explaining each significant position. When a notice arrives, the file already exists.

How New Mexico's Own Tax Rules Interact
New Mexico's income tax does not follow the federal Section 280E disallowance for licensed cannabis activity, so expenses restricted federally may still be deductible on the state return. That produces a book-to-tax gap and a state computation that can differ materially from the federal one.
That divergence has planning value, and it also creates a documentation obligation: two computations built from one set of records means the records have to support both. Educational background on the state layer, including excise and gross receipts treatment, is in the New Mexico Cannabis Tax Guide.
What 280E Costs a Real New Mexico Operator
Consider an Albuquerque storefront retailer with $6,000,000 of gross receipts, a 48 percent product margin and $2,300,000 of operating expenses. Gross profit is roughly $2,880,000 and book pre-tax income is roughly $580,000. Federally, almost none of the $2,300,000 is deductible, so the tax base is gross profit rather than income. The result is a federal liability calculated on nearly five times the economic profit, and an effective rate that would be absurd in any other industry.
Now move the same operator to a producer license. A mixed-light cultivator near Las Cruces with the same revenue capitalizes cultivation payroll, nutrients, power, water, grow-room depreciation and quality assurance into inventory. The disallowed pool shrinks to sales, marketing and general administration, and the effective rate falls dramatically. Nothing about the underlying economics changed — only the license type and the quality of the cost accounting behind it.
This is why we start every 280E engagement with a modeled comparison of current-state and properly-costed federal liability. The gap is usually large enough to fund the entire accounting function several times over, and it's quantified before any work is done.
Case Law That Shapes Every Position We Take
CHAMP established that a taxpayer can operate a separate, non-trafficking trade or business alongside a cannabis business and deduct the expenses of that separate business. It also set the standard: genuine separateness, supported by real allocation of employee time, space and expense. Olive narrowed the practical scope by rejecting a claimed second business that was in substance a way to give away services to cannabis customers.
Patients Mutual, the Harborside case, closed the door on retailers dressing selling expenses as inventory cost and confirmed that a reseller's COGS is governed by the reseller rules. Subsequent decisions reinforced that 263A doesn't expand a trafficker's inventoriable costs beyond what 471 already permits for that taxpayer type.
The through-line is that structure and documentation win cases, and creative recharacterization loses them. We take positions we can trace to a specific inventory rule, and we write down why, at the time — not in response to an information document request.
- CHAMP: separate trade or business is possible, with real economic separation
- Olive: form without substance fails
- Patients Mutual: resellers cannot inventory selling costs
- Consistency across years matters as much as the position itself
