Montana Hemp & Hemp‑Derived Cannabinoid Laws (2026)

This guide provides educational, state‑specific information on Montana hemp and hemp‑derived cannabinoid laws as of September 1, 2026. It is for educational purposes only and not legal advice.

Montana hemp laws: quick overview

Montana defines hemp as Cannabis sativa L. with total Δ9‑THC ≤ 0.3 % on a dry‑weight basis under MCA 80‑18‑101 (amended 2023) and ARM 4.19.101‑202 ([mca.legmt.gov](https://mca.legmt.gov/bills/2024/mca/title_0800/chapter_0180/part_0010/section_0010/0800-0180-0010-0010.html?utm_source=openai)). Cultivation, processing, sale, and possession of compliant hemp require a license under MCA 80‑18‑103 and ARM rules ([prod-agr.mt.gov](https://prod-agr.mt.gov/_docs/industrialhemp-docs/Hemp-MCA-ARM-Booklet.pdf?utm_source=openai)). In 2025, Montana enacted Senate Bill 375 (codified at MCA 50‑31‑239), prohibiting the sale of any hemp product containing Δ9‑THC to consumers unless FDA‑authorized as a food or drug ([mca.legmt.gov](https://mca.legmt.gov/bills/mca/title_0500/chapter_0310/part_0020/section_0390/0500-0310-0020-0390.html?utm_source=openai)). Additionally, 2025 session law limits total Δ9‑THC in hemp products sold by non‑marijuana licensees to ≤ 0.5 mg per serving and ≤ 2 mg per package; unadulterated hemp flower is exempt ([archive.legmt.gov](https://archive.legmt.gov/content/Publications/sales/2025SessionLaws_VOL1.pdf?utm_source=openai)). Montana also bans synthetic cannabinoid products—including Δ8, Δ10, HHC, etc.—via HB 948, effective May 22, 2023 ([revenue.mt.gov](https://www.revenue.mt.gov/card/cannabis/education/synthetic-marijuana-product-changes?utm_source=openai)).

Shipping guidance

Inbound shipments of hemp into Montana are allowed if the product meets state THC limits and licensing requirements. Age verification is not specified for hemp (non‑marijuana) products. Retailer or processor must hold a Montana hemp license (grower or processor) to legally handle hemp products.

Testing & COA guidance

Montana requires testing for total Δ9‑THC under its USDA‑approved hemp plan (effective January 27, 2023) per ARM 4.19.101‑202 and MCA 80‑18‑101‑111 ([agr.mt.gov](https://agr.mt.gov/hemp?utm_source=openai)). Non‑compliant lots (> 0.3 % Δ9‑THC) must be remediated or disposed per Department of Agriculture procedures ([agr.mt.gov](https://www.agr.mt.gov/Topics/H-M/Hemp-Pages/Disposal-Remediation-Hemp?utm_source=openai)). ISO/17025 accreditation not specified in sources.

What to buy

Allowed: hemp products with ≤ 0.3 % Δ9‑THC dry weight; non‑flower derivatives meeting per‑serving/package Δ9‑THC limits; hemp seed, fiber, oil, and GRAS‑status food ingredients.

What to avoid

Avoid: any hemp product containing Δ9‑THC sold to consumers (unless FDA‑authorized); synthetic cannabinoids (e.g., Δ8, Δ10, HHC, THC‑O) banned under HB 948; processed hemp extracts exceeding 0.5 mg Δ9‑THC per serving or 2 mg per package; non‑compliant flower (> 0.3 % Δ9‑THC).

How to shop compliant, tested hemp

• Hemp must contain ≤ 0.3 % Δ9‑THC dry weight per MCA 80‑18‑101 (2023)
• Hemp license required under MCA 80‑18‑103 and ARM 4.19.101‑202
• Sale of hemp products containing Δ9‑THC to consumers prohibited per MCA 50‑31‑239 (2025)
• Synthetic cannabinoids banned under HB 948 (effective May 22, 2023)
• Total Δ9‑THC per serving ≤ 0.5 mg and per package ≤ 2 mg for non‑marijuana sellers (2025 law)

Educational content only — not legal or medical advice.

FAQ