IRS Audit Red Flags Every Cannabis Business Should Know

Cannabis businesses operate under a level of federal tax scrutiny that most other industries never experience. Because marijuana remains a Schedule I controlled substance, cannabis companies are subject to IRC Section 280E, which bars them from deducting ordinary business expenses that every other legal business takes for granted. The only allowable offset to income is Cost of Goods Sold (COGS).

That narrow path leaves little room for error and it's exactly why the IRS pays closer attention to cannabis tax returns than to almost any other industry. Understanding what triggers scrutiny is the first step to avoiding it.

Why Cannabis Businesses Are Audited More Often

Several factors combine to put cannabis operators on the IRS's radar more frequently than average small businesses:

• The industry is cash-intensive, and cash-heavy businesses are already a known audit priority across all sectors.

• 280E creates an unusual tax structure that's easy to get wrong, even with good intentions.

• Aggressive or poorly substantiated COGS positions have become common enough that examiners know to look closely.

• State-level licensing and reporting requirements create a paper trail that can be cross-referenced against federal filings.

None of this means an audit is inevitable. But it does mean the margin for sloppy recordkeeping is much thinner than in other industries.

Red Flag #1: Aggressive or Unsupported COGS Claims

Because COGS is the only meaningful deduction available under 280E, there's a strong incentive to push as many costs as possible into that category. The IRS knows this, and returns showing unusually high COGS relative to revenue especially without clear cost accounting methodology behind them draw attention quickly.

Red Flag #2: Inconsistent Cash Reporting

Discrepancies between reported cash sales, bank deposits, and point-of-sale data are one of the fastest ways to invite an audit. If your cash logs don't match your deposits, or your deposits don't match your reported revenue, that inconsistency is often the very first thing an examiner flags.

Red Flag #3: Lack of a Documented Cost Accounting Method

The IRS expects cannabis businesses to use a consistent, defensible cost accounting methodology not an ad hoc approach that changes year to year. If you can't clearly explain and document how you arrived at your COGS figure, that alone can trigger a deeper look.

Red Flag #4: Commingled Business Structures

Some cannabis operators try to separate cultivation, processing, and retail into different entities in hopes of shielding non-cannabis-touching activities from 280E. Done properly, this can be a legitimate strategy. Done sloppily with commingled finances, unclear intercompany transactions, or structures that exist on paper only, it looks like an attempt to disguise ordinary expenses as COGS, and it tends to invite exactly the scrutiny it was meant to avoid.

Red Flag #5: Round Numbers and Estimates

Financial statements built on estimates rather than actual transaction-level data are an easy tell. Round numbers across multiple line items suggest recordkeeping that wasn't done in real time and that's a pattern examiners are trained to spot.

Red Flag #6: Payroll and Owner Compensation Irregularities

Because wages tied to non-COGS activities generally aren't deductible under 280E, some businesses attempt to reclassify labor costs to fit within COGS. Payroll allocations that don't match actual job functions, or owner compensation that looks disproportionate to the business's size, can draw closer review.

How to Reduce Your Audit Risk

The good news is that most of these red flags are avoidable with the right systems in place:

• Use a documented, consistent cost accounting methodology and apply it the same way every reporting period.

• Reconcile cash logs against POS and bank data regularly, not just at tax time.

• Keep entity structures clean, with clear documentation for any intercompany transactions.

• Maintain transaction-level records rather than relying on period-end estimates.

• Work with an accountant who understands 280E specifically general small business accounting experience isn't enough in this industry.

  
  

If You Are Selected for an Audit

Being flagged for an audit isn't necessarily a sign that something is wrong. But it does mean your documentation needs to hold up under close examination. Businesses that can clearly walk an examiner through their cost accounting methodology, cash controls, and entity structure tend to come through audits with far better outcomes than those relying on estimates and after-the-fact explanations.

Redbud Advisors specializes exclusively in cannabis accounting, including audit-ready recordkeeping and 280E-compliant cost accounting. Schedule a call to have your current setup reviewed before the IRS does.