Study: What Marijuana’s Move to Schedule III Will and Will Not Change Under Federal Law

Key Points
  • Rescheduling marijuana from Schedule I to Schedule III would mark the most significant federal policy shift in over 50 years but would stop short of full legalization.
  • Schedule III classification would officially recognize marijuana’s accepted medical use, aligning federal law with current science and state medical programs, while keeping it as a controlled substance.
  • The change would provide tax relief by removing Section 280E restrictions, easing business deductions and improving cash flow, though it could lead to industry consolidation without safeguards.
  • Research access would improve with fewer administrative barriers, but rescheduling would not legalize marijuana federally, allow interstate commerce, or address banking, criminal records, or federal-state legal conflicts.

A new policy analysis published in the journal Cannabis and Cannabinoid Research and by the U.S. National Library of Medicine examines what moving marijuana from Schedule I to Schedule III will actually mean under federal law—and what it would not. Conducted by researchers from the University of California, the analysis reviews the U.S. Department of Health and Human Services’ recommendation to reschedule marijuana, legal guidance from the Congressional Research Service, and broader research on administrative law, taxation and public health.

Perhaps unsurprisingly, the authors conclude that Schedule III would represent the most significant federal marijuana policy shift in over 50 years, but caution that it would fall well short of legalization.

According to the study, Schedule III would formally recognize that marijuana has “currently accepted medical use” under the Controlled Substances Act. That shift would align federal classification more closely with modern scientific evidence and the widespread operation of state medical marijuana programs. However, marijuana would remain a controlled substance, and state-legal adult-use and medical markets would not automatically become federally lawful.

The analysis finds that one of the most immediate impacts would be tax relief. Businesses would no longer be subject to Internal Revenue Code Section 280E, which bars standard business deductions for companies trafficking in Schedule I or II substances. Removing 280E would significantly lower effective tax burdens and improve cash flow for many operators. Still, the authors warn that increased capital access could accelerate industry consolidation without protective safeguards.

Research barriers would also ease. Schedule I status has long imposed heightened registration requirements and restricted access to research materials, limiting large-scale clinical studies. While DEA oversight would remain in place under Schedule III, researchers would face fewer administrative hurdles, potentially expanding institutional participation and clinical trials.

At the same time, the paper emphasizes what rescheduling would not accomplish. It would not legalize marijuana federally, authorize interstate commerce, approve dispensary products, expunge criminal records, or resolve federal-state legal conflicts. Banking access would still require congressional action, and FDA standards for therapeutic claims would remain unchanged.

The authors conclude that Schedule III should be treated as a transitional step. They argue that federal agencies should prioritize expanding research access and strengthening public health oversight, while Congress addresses banking, interstate commerce and criminal justice reform.