For over forty years, Section 280E of the Internal Revenue Code imposed a unique challenge on cannabis operators, unlike any other legal business: it taxed them on income they never actually retained. A dispensary could only deduct the cost of its products, while virtually no other expenses like rent, payroll, or marketing were deductible, leading to taxes on inflated income. Federal rates typically reached 70 to 80 percent of net income. However, this regime ended for state-licensed medical marijuana operators on April 22, 2026. For those who experienced it, the key question now is not whether they overpaid, but how much they can still recover and if they will take action before the statute of limitations quietly closes the door on their best years.
What Changed, and Why It Matters
Section 280E disallows any deduction or credit for a business that “consists of trafficking in controlled substances (within the meaning of Schedule I and II of the Controlled Substances Act).” See 26 U.S.C. § 280E. The keywords are “Schedule I and II.” The provision reaches no further. So long as marijuana sat in Schedule I, every state-licensed cultivator, processor, and dispensary was a “trafficker” in the eyes of the IRS, and the ordinary deductions available to every other business under Section 162 were simply off the table.
That is precisely what changed. The Department of Justice and the Drug Enforcement Administration issued a final order transferring FDA-approved marijuana products and marijuana subject to a qualifying state medical marijuana license from Schedule I to Schedule III of the Controlled Substances Act. See U.S. Department of Justice, Apr. 23, 2026; 91 Fed. Reg. 22714 (Apr. 28, 2026). Once qualifying medical marijuana moved to Schedule III, the statutory trigger for 280E vanished.
Treasury and the IRS confirmed the consequence directly. In a release dated April 23, 2026, the agencies stated that “rescheduling generally removes section 280E as a bar to claiming deductions and credits” for businesses that, as a result of the order, no longer traffic in Schedule I or II substances. See U.S. Department of the Treasury, Apr. 23, 2026. Qualifying medical operators may now deduct ordinary and necessary business expenses under Section 162. Two limits define the relief, and both are important: adult-use recreational marijuana stays in Schedule I and is fully subject to 280E, and the relief applies only to marijuana linked to an FDA-approved product or a qualifying state medical license.
Why the Refund Opportunity Has a Deadline You Cannot Ignore
The going-forward relief is significant, but the more urgent opportunity looks backward. The same order encouraged the Secretary of the Treasury to consider retrospective relief from Section 280E liability for taxable years in which a state licensee operated under a state medical marijuana license, raising the real prospect of refunds for taxes already paid. See U.S. Department of the Treasury, Apr. 23, 2026. Treasury has not yet issued formal guidance, so the rules for prior years are not final.
Here is the trap. The statute of limitations does not pause while Treasury drafts that guidance. Under 26 U.S.C. § 6511(a), a refund claim must be filed within three years from the time the return was filed or two years from the time the tax was paid, whichever is later. For many calendar-year operators, the earliest still-open years are already 2022 and 2023, and they begin closing on a rolling basis. An operator who waits for perfect certainty may discover that the very years with the largest overpayments have already lapsed beyond recovery.
Warning Signs That You Should Be Acting Now, Not Later
If any of the following describe your business, you should be talking to tax counsel before you file your next return, not after the IRS publishes a form:
- You operated under a state medical marijuana license in 2022, 2023, or any later year and paid federal tax under 280E. Those are precisely the years a protective refund claim is designed to preserve, and under Section 6511, the earliest of them are closing soon.
- You run both medical and adult-use operations under one roof. Your medical activity now sits outside 280E while your adult-use activity remains inside it, and the IRS will require you to apportion expenses between the two. Treasury has said forthcoming guidance will address exactly this multiple-activity allocation. See S. Department of the Treasury, Apr. 23, 2026.
- You are tempted to file an aggressive amended return today, claiming full retroactive relief. Because the substances were Schedule I in those prior years, there is a credible argument that the tax was owed under the law as it then stood, and that a premature amendment can raise audit exposure before Treasury confirms that relief is available. The timing and form of any claim deserve real thought.
- You lack clean, year-by-year license and transaction records. Relief will rest on proving you operated under a state medical license in each year you claim. The operator with documented license dates and transaction-level records is in the strongest position to recover; the one reconstructing the file under deadline pressure is not.
- You are unsure how the new rules affect your current-year return. Treasury’s expected transition rule applies relief to the full taxable year that includes the effective date of the order, so calendar-year operators can deduct expenses for all of 2026 rather than splitting the year at April 22. See S. Department of the Treasury, Apr. 23, 2026.
What the Smart Operators Are Doing Differently
The operators who will capture the most relief are neither gambling nor waiting. Rather than filing aggressive amended returns and hoping Treasury blesses them later, or sitting idle while the limitations clock runs, they are pulling license records for every open year, segmenting medical from non-medical revenue, and filing protective refund claims, on Form 1120X for corporations or Form 1040X for individuals, to preserve every open year under 26 U.S.C. § 6511 while the guidance is written. A protective claim does not force the IRS to act now. It keeps your money on the table for the day the rules are finalized, and it costs far less than the refund it protects.
If You Operated Under a State Medical License, Do Not Wait
The 280E refund window is real and large, but it is not permanent. The operators who come through this transition with the most recovery will be the ones who made that call early, not the ones who waited for perfect guidance and watched their best years slip away.
[View source.]
https://www.jdsupra.com/legalnews/the-280e-refund-window-is-open-and-the-8193461/
