The short answer
Section 280E disallows the same thing for every adult-use cannabis business: deductions outside of cost of goods sold. The difference is how much cost each business can put into COGS. Dispensaries that buy finished product are resellers and can generally include only the product cost and the cost of acquiring it, so most of their spending is disallowed. Cultivators and manufacturers are producers and can include direct and indirect production costs, so a much larger share of their spending reduces taxable income.
Why does 280E affect cannabis businesses so differently?
Section 280E doesn't care what kind of cannabis business you run. If the activity involves trafficking in a Schedule I or II substance, deductions and credits are disallowed. Adult-use cannabis is still Schedule I as of mid-October 2026, so that covers every adult-use dispensary, grow and processor.
But cost of goods sold isn't a deduction, so 280E doesn't block it. And the rules for what goes into COGS, under IRC 471, are very different for a business that buys and resells goods than for one that produces them. That one distinction explains most of the gap in effective tax rates across the industry.
Put simply: 280E taxes you on roughly revenue minus COGS. The more of your real costs that properly sit in COGS, the closer your taxable income gets to your actual profit. Producers have more costs that qualify. Resellers have fewer. (If you need the fundamentals first, start with What Is Section 280E?)
Everything in this post is about adult-use activity. State-licensed medical activity has been Schedule III since April 28, 2026, and 280E generally no longer applies to it going forward.
How does 280E hit dispensaries?
A dispensary that buys finished, packaged product from licensed producers is a reseller. Under the 471 regulations, a reseller's inventory cost is generally the invoice price, less discounts, plus transportation and other necessary charges to acquire the goods.
That leaves out nearly everything it takes to run a store:
- Retail rent, common area charges and utilities
- Budtenders, store managers, inventory clerks and security staff
- Point-of-sale software, compliance software and payment processing
- Marketing, loyalty programs and promotions
- Insurance, professional fees and bank fees
The Harborside decision (Patients Mutual Assistance Collective Corp. v. Commissioner, Tax Court 2018, affirmed by the Ninth Circuit in 2021) confirmed that a dispensary can't use Section 263A to pull those costs into inventory. So for a standalone adult-use dispensary, the main levers are capturing every legitimate acquisition cost, getting inventory counts and valuation right, and making sure discounts and rebates are recorded accurately.
Because so little qualifies, standalone dispensaries usually see the highest effective federal rates in the industry.
How does 280E hit cultivators?
A cultivator grows the plant, which makes it a producer. Producers use the full absorption method under the 471 regulations, which includes direct materials, direct labor and indirect production costs.
For a typical grow, that can include:
- Clones, seeds, soil or media, nutrients and pest management inputs
- Wages for cultivation techs, harvest and trim crews
- The production share of rent, power, water and HVAC for grow and drying rooms
- Depreciation on lights, benches, irrigation and climate equipment
- Production supervision and quality control
What still falls outside COGS for a grow: selling and marketing, sales staff, general administration, executive pay and most professional fees. Those costs are still disallowed under 280E for adult-use activity.
Cultivation is capital- and labor-intensive, so a large share of a grow's spending is genuinely production cost. That's why cultivators often face a much smaller 280E penalty than retailers, provided their costing and records hold up. The exposure is in sloppy allocation, missing timesheets and costs parked in the wrong accounts.
How does 280E hit manufacturers and processors?
Manufacturers and processors turn biomass or flower into extracts, vapes, edibles, pre-rolls and other products. They're producers too, so the same full absorption principles apply.
Typical production costs include purchased biomass or flower, extraction solvents and inputs, ingredients, hardware such as cartridges and batteries, production packaging, lab and kitchen staff wages, the production share of facility costs and depreciation on extraction and packaging equipment.
Two things deserve extra attention for manufacturers:
- Multi-step costing. Product moves through stages, such as biomass to crude to distillate to finished cartridge. Costs need to follow it through each step, including yield losses, or inventory values drift.
- Contract and toll processing. If you process for others or pay others to process for you, how the arrangement is structured affects whose inventory it is and who records what. Get the contract and the accounting aligned.
How do the three compare side by side?
| Question | Dispensary (reseller) | Cultivator (producer) | Manufacturer (producer) |
|---|---|---|---|
| 471 cost rules | Purchase price plus acquisition costs | Full absorption | Full absorption |
| Labor in COGS | Generally none | Grow, harvest, trim crews | Extraction, kitchen, packaging staff |
| Facility costs in COGS | Generally none | Production share | Production share |
| Typical share of spend in COGS | Lowest | Higher | Higher |
| Relative 280E exposure | Highest | Lower | Lower |
| Biggest documentation risk | Inventory counts and valuation | Labor and facility allocation | Multi-stage costing and yields |
The comparisons are relative, not percentages. Actual results depend on your cost structure, your records and your state.
What should each type of operator focus on?
The defensible moves are different depending on where you sit in the supply chain.
Dispensaries
- Record freight-in, delivery fees and other acquisition costs as part of inventory, not as operating expenses.
- Book vendor discounts, rebates and promotional credits against inventory cost so COGS isn't overstated or understated.
- Reconcile seed-to-sale quantities to the general ledger monthly, so shrink and adjustments are real and supported.
- Keep year-end counts clean. Ending inventory errors flow straight into COGS.
Cultivators and manufacturers
- Track labor by function with timesheets, especially for people who split time between production and sales or admin.
- Measure the square footage of production areas and keep the floor plan current.
- Use a fixed-asset register that separates production equipment from everything else.
- Cost each batch or harvest consistently, and write the method down.
For everyone: put the costing policy in writing, apply it the same way every month and keep the backup. A strong position with weak records tends to lose to a modest position with great ones.
Why does vertical integration matter under 280E?
A vertically integrated operator grows or makes product and sells it in its own stores. The production side gets producer treatment; the retail side gets reseller treatment. Done well, that can mean a much larger share of total company spending legitimately sits in COGS than for a standalone dispensary.
An illustrative comparison of two adult-use businesses, each with $3,000,000 of retail revenue:
| Illustrative | Standalone dispensary | Vertical operator |
|---|---|---|
| Retail revenue | $3,000,000 | $3,000,000 |
| COGS | $1,500,000 (wholesale purchases) | $1,100,000 (own production costs) |
| Gross income under 280E | $1,500,000 | $1,900,000 |
| Other spending (mostly disallowed) | $1,200,000 | $1,200,000 |
| Actual pre-tax profit | $300,000 | $700,000 |
Notice the vertical operator's taxable gross income is higher in dollars, because it captures the wholesale margin itself. But its taxable income is much closer to its real profit, so its effective rate is lower. At a 21% C corporation rate, the illustrative standalone store's federal tax of $315,000 is about 105% of its $300,000 profit; the vertical operator's $399,000 is about 57% of its $700,000. That's the 280E advantage of integration: not less tax in every case, but tax that tracks economic profit more closely.
Integration also brings complexity: intercompany transfers, transfer pricing between entities and consistent costing across license types. If you hold both medical and adult-use licenses, there's one more layer, covered in How to Split Shared Costs Between Medical and Adult-Use Licenses. For help building the costing itself, see our COGS and inventory costing service.
Frequently asked questions
Why do dispensaries pay more under 280E than cultivators?
Dispensaries that buy finished product are resellers, so their COGS is generally limited to product cost and acquisition costs. Cultivators are producers and can include production labor, facility costs and depreciation, so less of their spending is disallowed.
Can a dispensary be treated as a producer?
Only for activity that is genuinely production, such as in-house manufacturing or packaging done by the business itself. Buying finished goods and selling them is reselling, and Harborside confirmed reseller rules apply to that activity.
Does vertical integration reduce 280E tax?
It often reduces the effective rate, because production costs qualify for COGS under the full absorption rules. It also adds complexity in intercompany transactions and costing, so it isn't automatically a tax win.
Do these differences apply to medical cannabis?
State-licensed medical activity has been Schedule III since April 28, 2026, so 280E generally no longer applies to it going forward. The reseller versus producer distinction still matters for accurate books, but the 280E stakes apply to adult-use activity.