Colorado was among the first states to legalize recreational cannabis, and Denver's cannabis industry — dispensaries, cultivators, processors, and ancillary businesses — is now over a decade old. It's also one of the most heavily taxed industries in the country, not because of state policy, but because of a 1982 federal tax law that was never intended to apply to legitimate businesses.
If you operate a cannabis business in Denver, you almost certainly need a CPA who understands IRC Section 280E. A general practitioner who isn't familiar with cannabis accounting can file an incorrect return, cost you deductions you're entitled to, or expose you to audit risk. The stakes are real.
What is IRC Section 280E?
Section 280E was enacted in 1982 after a drug dealer successfully deducted his business expenses — including a gun and scale — on his federal tax return. Congress responded by prohibiting deductions for businesses "trafficking in controlled substances." Cannabis, still classified as a Schedule I controlled substance under federal law, falls under this prohibition.
In practice, 280E means that a cannabis retailer or cultivator cannot deduct ordinary business expenses like rent, payroll, utilities, marketing, or insurance against gross income. The only deduction allowed is Cost of Goods Sold (COGS) — the direct cost of producing the product. This creates effective federal tax rates of 50–70% for many cannabis operators.
Note: In May 2024, the DEA initiated rulemaking to potentially reclassify cannabis from Schedule I to Schedule III. If finalized, this would eliminate 280E's applicability. As of early 2026, rescheduling has occurred, and the landscape for cannabis taxation is changing — a cannabis-specialized CPA will know the current status and implications for your business.
Why Cannabis Businesses Need a Specialist CPA
Maximizing COGS under 280E
The one deduction cannabis operators have is COGS — but the definition of what counts as COGS under 280E is actively litigated and contested. For cultivators, it includes direct cultivation costs (labor, supplies, utilities allocated to the grow). For retailers, it's narrower. A cannabis CPA knows how to build a defensible COGS position that maximizes deductions without overreaching into audit territory.
Entity structure matters enormously
The choice between operating as a single entity vs. separating cannabis activities from ancillary activities (consulting, real estate, brand licensing) can substantially reduce 280E exposure. A management company or IP holding company structure, properly implemented, can legally remove some expenses from 280E scope. This requires careful design and a CPA who has done it before.
Colorado state tax
Colorado does not conform to 280E — the state allows cannabis businesses to deduct ordinary business expenses on their Colorado return, and Colorado has its own cannabis-specific excise taxes. Your CPA needs to navigate both the federal limitation and the state's completely different framework simultaneously.
Cash handling and banking
Many Denver cannabis operators still deal primarily in cash due to federal banking restrictions (though this is changing). Cash-intensive businesses face specific accounting requirements — careful cash reconciliation, point-of-sale system integration, and defensible documentation of every transaction. A cannabis CPA has built these workflows before.
Questions to Ask a Potential Denver Cannabis CPA
- "How many active cannabis business clients do you have?" — You want a double-digit answer from a genuine specialist, not someone who "has done a couple."
- "How do you approach COGS maximization under 280E?" — They should have a specific methodology, not a vague answer.
- "Have any of your cannabis clients been audited? What was the outcome?" — Experience with audits is a significant differentiator.
- "How do you stay current on 280E case law and potential rescheduling developments?" — This area changes quickly. You want someone who's paying attention.
- "Can you help with seed-to-sale software integration?" — METRC tracking data should feed into your accounting system. A cannabis-experienced CPA has done this integration before.
Colorado Cannabis-Specific Tax Obligations
- 15% state retail marijuana excise tax on average market rate of retail marijuana
- 15% special sales tax on retail marijuana sales
- 2.9% state sales tax
- Denver local tax varies by license type
- Monthly MED reporting integrated with METRC tracking
On top of the state obligations, federal quarterly estimated payments must be calculated correctly — which is complex when 280E eliminates most of the deductions you'd normally use to reduce your estimated liability.
What Cannabis CPAs in Denver Typically Charge
- Small dispensary (annual accounting + tax): $3,000–$8,000/year
- Mid-size operation with cultivation: $8,000–$20,000/year
- Multi-location or MSO structure: $20,000–$50,000+/year
- Monthly bookkeeping (standalone): $800–$2,500/month
Cannabis accounting costs more than comparable general business accounting because of the specialized knowledge required, the volume of transactions (especially in cash), and the additional compliance burden. But the cost of an inexperienced CPA — whether through missed COGS deductions or an audit that goes poorly — is far higher.