Compound LawsREAL-TIME LEGAL INTELLIGENCE

Montana THCa Ban (2026): In Force

Ban in force

As of November 6, 2026, THCa is banned from retail sale in Montana, effective May 22, 2023. Illegal outside the licensed marijuana program: total delta-9 basis puts THCa flower over 0.3% (MCA 80-18-101).

Verified November 6, 2026. Full determination, citations and verbatim law: Is THCa legal in Montana?

Latest update September 23, 2026: Status changed from illegal to restricted. Change history

When does the Montana THCa ban take effect?

The Montana THCa ban is already in force (effective May 22, 2023); no further effective date is pending.

Watchenforcement date in 28 days (H.R. 6500 (Pub. L. 119-103) / Pub. L. 119-37 Sec. 781)

in 28 days December 11, 2026
Federal hemp redefinition, Dec 11 piece: total THC 0.3% and 0.4 mg total THC per container
Federal · Enforcement date · H.R. 6500 (Pub. L. 119-103) / Pub. L. 119-37 Sec. 781
Pub. L. 119-103 (continuing resolution, Sept 2, 2026) delayed the rest of the Pub. L. 119-37 sec. 781 hemp definition to Dec 11, 2026 (CRS IF13136, Sept 28, 2026): hemp is measured by total tetrahydrocannabinols including THCA (0.3% dry weight), and any final product over 0.4 mg combined total THC and cannabinoids with similar effects per container leaves hemp. A product that leaves hemp is marijuana, Schedule I, in every state.

How the status got here

2026-09-23Status changed from illegal to restricted.
2026-09-23Status changed from restricted to illegal.
2026-09-23Status changed from restricted to illegal.
2026-09-23Status changed from illegal to restricted.

Nearby

Other bans tracked in Montana

Montana 5-MeO-DMT ban ban in force
Montana Ayahuasca ban ban in force
Montana CBG / CBDA / CBGA ban ban in force
Montana Delta-10 THC ban ban in force
Montana Delta-8 THC ban ban in force
Montana DMT ban ban in force
Montana EPN / Euphorinol ban ban in force
Montana HHC ban ban in force
Montana HHC-P ban ban in force
Montana Ibogaine ban ban in force
Montana Ketamine ban ban in force
Montana MGM-15 ban ban in force
Montana MGM-16 ban ban in force
Montana Mitragynine Pseudoindoxyl ban ban in force
Montana Peyote and Mescaline ban ban in force
Montana Poppers ban ban in force
Montana Psilocybin Mushrooms ban ban in force
Montana Salvia divinorum ban ban in force
Montana THC-O Acetate ban ban in force
Montana THCP ban ban in force
Montana 7-OH ban no ban, gray area
Montana CBD ban no ban, restricted
Montana Delta-9 THC ban no ban, restricted
Montana Kratom ban no ban, legal
Montana THCV ban no ban, not yet verified

Every state where THCa is banned · Hemp ban in Montana · THC ban in Montana · Federal hemp ban: what changes Nov 12 and Dec 11 · All compounds in Montana · Is THCa Legal? Every state

Cite this page

Compound Analytics. "Montana THCa Ban (2026): In Force." Compound Laws, https://compoundlaws.com/bans/thca/montana/. Accessed November 13, 2026.

Compound Laws, published by Compound Analytics, reports the record: statutes verbatim, official citations, enforcement facts and verification dates. Nothing here is legal advice and nothing here describes how to get around a law. A jurisdiction with no verified row is reported as not yet verified, never as legal. Found an error? Corrections policy.

About · Methodology · Glossary · Changes · RSS · Data licensing · llms.txt · Sitemap