Montana Hemp & Hemp‑Derived Cannabinoid Laws

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

Montana hemp laws: quick overview

Montana defines hemp as Cannabis sativa L. and any part thereof with a total delta‑9 THC concentration of not more than 0.3 % on a dry weight basis, explicitly including derivatives, isomers, acids, salts, and salts of isomers, but excluding synthetic cannabinoids (MCA § 80‑18‑101; amended by HB 948, effective 2023) ([mca.legmt.gov](https://mca.legmt.gov/bills/mca/title_0800/chapter_0180/part_0010/section_0010/0800-0180-0010-0010.html?utm_source=openai)). The state operates under a USDA‑approved hemp plan effective January 27, 2023, and requires licensing for cultivation and processing under MCA Title 80, Chapter 18 and ARM 4.19.101‑202 ([agr.mt.gov](https://agr.mt.gov/Hemp?utm_source=openai)). In 2025, Montana enacted HB 49, which imposes strict potency limits on hemp‑derived consumables: no more than 0.5 mg total Δ9‑THC per serving and 2 mg per package. Unadulterated raw hemp flower remains exempt from these milligram caps if it meets the 0.3 % Δ9‑THC threshold ([legalclarity.org](https://legalclarity.org/is-cbd-legal-in-montana-a-review-of-state-law/?utm_source=openai)). Additionally, HB 948 (2023) and MCA § 80‑18‑101 exclude synthetic cannabinoids from the hemp definition, effectively banning products like delta‑8, delta‑10, HHC, THC‑O, etc. ([cannabisregulations.ai](https://www.cannabisregulations.ai/state-legality/montana-delta-8?utm_source=openai)).

Shipping guidance

Inbound shipments of hemp products into Montana must comply with state potency and synthetic cannabinoid bans. Age verification is required for adult‑use cannabis but hemp products are non‑intoxicating; however, any hemp product exceeding Δ9‑THC limits or containing synthetic cannabinoids may be intercepted. Retailer registration/licensing is required for cultivation and processing; shipping to unlicensed entities is not permitted.

Testing & COA guidance

Montana requires lab testing for Total THC to verify compliance with the 0.3 % Δ9‑THC dry‑weight limit and the 0.5 mg/2 mg caps for consumables. Labs must follow USDA‑approved hemp plan protocols; ISO 17025 accreditation is expected but not explicitly confirmed in sources. Certificates of Analysis must accompany products; retention requirements are not specified in available sources.

What to buy

State‑legal hemp products include raw hemp flower (≤ 0.3 % Δ9‑THC), CBD isolate or broad‑spectrum products with verified zero Δ9‑THC, hemp seed oil, and non‑intoxicating topicals or fibers. Consumables with ≤ 0.5 mg Δ9‑THC per serving and ≤ 2 mg per package are allowed.

What to avoid

Avoid any hemp‑derived products containing synthetic cannabinoids (e.g., delta‑8, delta‑10, HHC, THC‑O) — these are banned under HB 948. Also avoid consumables exceeding the 0.5 mg per serving or 2 mg per package Δ9‑THC limits. Full‑spectrum CBD with any detectable Δ9‑THC is effectively prohibited under SB 375 (2025) unless FDA‑authorized.

How to shop compliant, tested hemp

• Hemp must contain ≤ 0.3 % Δ9‑THC by dry weight (MCA § 80‑18‑101).
• Finished hemp consumables limited to ≤ 0.5 mg Δ9‑THC per serving and ≤ 2 mg per package (HB 49, 2025).
• Synthetic cannabinoids (e.g., delta‑8, delta‑10, HHC) are banned (HB 948, 2023).
• Raw hemp flower exempt from mg caps if ≤ 0.3 % Δ9‑THC.
• Hemp cultivation and processing require a license under MCA Title 80, Chapter 18 and ARM 4.19.101‑202.
• Montana operates under a USDA‑approved hemp plan effective January 27, 2023.

Educational content only — not legal or medical advice.

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