Montana
Psilocybin is illegal in Montana as of 01 Aug 2026.1
- Corrected and re-checked against 2 cited sources at this review.
1. What the law is
Nothing can advance in Montana this year: the legislature meets only in odd-numbered years, so there is no 2026 regular session, and nothing was pending at the 1 Aug 2026 review. The last attempt was HB 955 in 2023, which would have licensed therapeutic psilocybin treatment centers; a committee defeated it 9-12. Psilocybin and psilocyn remain listed in Montana's Schedule I.
Is psilocybin legal in Montana? No. Psilocybin is illegal in Montana, where it is classified as a Schedule I dangerous drug under the Montana Code Annotated, specifically MCA 50-32-222(4), which lists both psilocybin and psilocyn (psilocin) among the scheduled hallucinogenic substances. As a Schedule I substance, its manufacture, possession, and distribution are prohibited under Title 45 of the Montana Code and carry criminal penalties. Montana has enacted no reform creating any lawful adult, medical, or therapeutic access to psilocybin.
Psilocybin remains illegal in Montana as a matter of current law; no statute, ballot measure, or task force has created any legal access. The most recent reform attempt, House Bill 955 (2023), introduced in the 68th Legislature, would have established a framework for the medical use of psilocybin by certified patients. According to legislative records and contemporaneous reporting, the House Human Services Committee rejected HB 955 by a 9-12 vote in executive session, and the bill did not advance. An earlier 2023 draft (LC 1208) likewise failed to become law. Because the Montana Legislature meets in regular session only in odd-numbered years, it was not in regular session in 2026, and no enacted or pending measure changes the substance's Schedule I status.
2. Pending legislation
No bill is on file in Montana that would change this record, as of the 01 Aug 2026 review.
3. History
The laws behind today’s status, when each took effect, and every review since, in order.
The Montana House Human Services Committee rejected HB 955 by a 9-12 vote in executive session; the bill did not advance. A related 2023 draft, LC 1208, also failed.
House Bill 955, which would have legalized medical use of psilocybin for certified patients, was introduced in the 68th Montana Legislature.
The Montana Legislature, which meets in regular session in odd-numbered years, was not in regular session; psilocybin remained a Schedule I substance under MCA 50-32-222 with no pending reform.
Montana moves from mixed to illegal. The only activity on record is HB 955, defeated in committee in 2023, and the legislature does not sit in regular session in 2026.
The entry now cites Montana's own Schedule I listing at section 50-32-222 rather than a bill-tracking page. State records confirm LC 1208 was the draft number for HB 955.
Montana still lists psilocybin in Schedule I. The legislature does not meet in regular session this year and nothing is pending.
Montana's entry now says when its no-pending-legislation claim was last checked: the 1 Aug 2026 review. The legislature meets in odd-numbered years, so nothing can advance in regular session this year.
4. Trials in Montana
Interventional psilocybin trials with at least one study site in Montana, drawn from ClinicalTrials.gov, EU CTIS, and ISRCTN. Registry data is reported by sponsors and shown as filed.
Recruiting, active, completed and closed add up to the 1 trial with a study site in Montana, as of Aug 2026. Closed covers trials terminated, suspended, withdrawn or left unverified.
| Registry ID | Trial | Phase | Sponsor | Status | Started |
|---|---|---|---|---|---|
| NCT05042466 (opens in new tab) | Northwest Therapies Trauma Psilocybin Study Compassionate Use Study (opens in new tab)Site at Ross Allison NPI #1437519899 Administrator Of Study, Bozeman | Phase Phase 1 | Sponsor NWTraumatherapies | Status Unknown status | Started |
ClinicalTrials.gov data courtesy of the U.S. National Library of Medicine.
5. Common questions
Is psilocybin legal in Montana?
No. Psilocybin is illegal in Montana. It is classified as a Schedule I dangerous drug under MCA 50-32-222(4), and its manufacture, possession, and distribution are prohibited under state law.
What law makes psilocybin illegal in Montana?
Montana Code Annotated 50-32-222 lists psilocybin and psilocyn (psilocin) among the Schedule I hallucinogenic substances. Schedule I controlled-substance offenses are penalized under Title 45 of the Montana Code Annotated.
Did Montana pass a psilocybin therapy law?
No. House Bill 955 (2023) proposed a medical psilocybin framework, but the House Human Services Committee rejected it by a 9-12 vote and it did not become law. No psilocybin reform has been enacted in Montana.
Is there any pending psilocybin legislation in Montana in 2026?
No pending psilocybin legislation was active in 2026. The Montana Legislature meets in regular session only in odd-numbered years and was not in regular session in 2026; psilocybin remained a Schedule I substance under MCA 50-32-222.
Are magic mushrooms ("shrooms") legal in Montana?
"Magic mushrooms" and "shrooms" are common names for fungi that contain psilocybin. Psilocybin is illegal in Montana as of 01 Aug 2026. Some laws control the compound and the fungus separately, so this record states the position for psilocybin in Montana.
Sources and confidence
Every status line is checked against the primary sources below. How each record is graded for confidence is set out in the methodology.
- 1.mca.legmt.gov (opens in new tab) · mca.legmt.gov
- 2.Marijuana Moment.Marijuana Moment (opens in new tab) · marijuanamoment.net
Cited at the review
This information is for educational purposes only and does not constitute legal advice. Laws change frequently, and enforcement practice can differ from the letter of the law. Verify current status with local authorities before relying on this record.
Changes to this record
Every change we have made to this record, dated, corrections included. Nothing changes silently.
Montana's entry now says when its no-pending-legislation claim was last checked: the 1 Aug 2026 review. The legislature meets in odd-numbered years, so nothing can advance in regular session this year.
Montana still lists psilocybin in Schedule I. The legislature does not meet in regular session this year and nothing is pending.
The entry now cites Montana's own Schedule I listing at section 50-32-222 rather than a bill-tracking page. State records confirm LC 1208 was the draft number for HB 955.
Montana moves from mixed to illegal. The only activity on record is HB 955, defeated in committee in 2023, and the legislature does not sit in regular session in 2026.
Montana: psilocybin legal status. The Psilocybin Record. Accession US-MT-001. Status as of 01 Aug 2026. https://psilocybinlegalization.com/record/montana
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