Is CBD Legal in Montana? Hemp Caps, Delta-8, and Labels

Yes, CBD is legal in Montana, but the rules changed sharply in 2025. Hemp-derived CBD products such as oils, tinctures, topicals, and capsules remain available at ordinary retail stores, provided they stay within strict new limits on THC content. House Bill 49, passed during the 2025 legislative session, caps retail hemp products at 0.5 milligrams of delta-9 THC per serving and 2 milligrams per package, bans synthetic cannabinoids, and leaves higher-THC CBD products available only through licensed dispensaries.¹

What Counts as Legal Hemp CBD

Montana’s hemp statute mirrors the federal standard set by the 2018 Farm Bill. Under Montana Code 80-18-101, hemp means Cannabis sativa L. and any part of the plant, including derivatives, extracts, and cannabinoids, with a total delta-9 THC concentration of no more than 0.3% on a dry weight basis. Synthetic cannabinoids are explicitly excluded from the definition.²

Montana’s marijuana code carves hemp back out of the controlled-substance definition. If a CBD product meets the hemp definition, it falls under agricultural regulation rather than the state’s marijuana licensing system, which is why CBD oils and topicals sit on shelves at pharmacies, grocery stores, and smoke shops rather than only in dispensaries.³

The 2025 Milligram Caps on Retail Hemp Products

Before HB 49, any hemp product under 0.3% delta-9 THC could be sold at retail. In practice, that threshold allowed edibles with enough THC to produce a noticeable buzz, especially in larger servings. HB 49 replaced the percentage-based test for retail products with hard milligram caps.¹

Hemp products sold anywhere other than a licensed dispensary or licensed manufacturer can now contain no more than:

0.5 mg of total delta-9 THC per serving
2 mg of total delta-9 THC per package

For comparison, a typical recreational cannabis edible in Montana contains 5 to 10 mg of THC per serving. The retail hemp cap is a fraction of that, too low to produce intoxicating effects in most people.¹

Unadulterated hemp flower that has not been further processed into extracts, infused products, or concentrates is exempt from the milligram caps and remains governed by the older 0.3% threshold. The new limits target processed products: gummies, tinctures, vape cartridges, and the like. Anything exceeding the caps falls under the marijuana code and can only be sold through a licensed dispensary.¹

Delta-8 and Synthetic Cannabinoids

HB 49 also went after the market for synthetic and semi-synthetic cannabinoids. The law prohibits any person from manufacturing, processing, storing, or offering for sale a synthetic cannabinoid or a product containing one. Montana defines “synthetic cannabinoid” broadly to cover any cannabinoid produced artificially, whether through chemical synthesis or biosynthesis using organisms like yeast or algae.¹

Delta-8 THC sits in a gray area. Delta-8 that occurs naturally in hemp in trace amounts is not synthetic, but almost all commercial delta-8 is chemically converted from CBD, which likely qualifies as a synthetic cannabinoid under Montana’s definition. Combined with the per-serving milligram cap, the practical result is that intoxicating delta-8 products have largely disappeared from Montana retail outside licensed dispensaries.

Enforcement authority sits with the Department of Agriculture, the Department of Justice, and local law enforcement. Penalties can reach $1,000 per day for ignoring a cease and desist order.¹

CBD in Food, Drinks, and Supplements

This is where many Montana shoppers get tripped up. Despite CBD oils and capsules being sold freely, CBD cannot legally be added to food or beverages in the state, and it cannot be sold as a dietary supplement. The Montana Department of Public Health and Human Services states plainly that added CBD from any cannabis plant source is not allowed in food or dietary supplements.⁴

The banned list includes CBD products derived from any cannabis plant, CBD oil derived from industrial hemp, hemp oil not made from seeds, and industrial hemp seed oil with added CBD. The agency treats CBD as a pharmaceutical ingredient, not a food additive. Hemp seeds and hemp seed oil are allowed in food because they do not contain CBD or significant THC. The CBD granola bar at a gas station is not compliant; hemp seed bread at the bakery is.⁴

This matches the FDA’s position. The agency considers CBD excluded from the food additive and dietary supplement categories because it is an active ingredient in an approved prescription drug, Epidiolex, and has continued issuing warning letters to companies marketing CBD foods and edibles.⁵

Stronger CBD Through Licensed Dispensaries

If you want a CBD product that exceeds the retail milligram caps, Montana’s recreational marijuana system is the legal route. Voters approved Initiative 190 in November 2020. Adults 21 and older can possess up to one ounce of usable marijuana, with sub-limits of 8 grams in concentrated form and 800 milligrams of THC in edible products.⁶

You need to be at least 21 or hold a valid medical marijuana card to buy at a dispensary. Medical cardholders face the same possession limits as recreational consumers but are not subject to potency restrictions on their purchases. For someone who specifically wants a high-CBD, higher-THC product within a regulated, lab-tested supply chain, dispensaries carry formulations that retail hemp shops no longer can.⁷

CBD and Driving

Montana sets a per se THC limit for drivers. Operating a vehicle with 5 nanograms per milliliter or more of THC in your blood is a DUI offense regardless of whether you appear impaired. The rule applies equally to medical cardholders and recreational users.⁸

Pure CBD isolate contains little to no THC and is unlikely to push blood levels anywhere near 5 ng/ml. Full-spectrum CBD products do contain trace amounts of THC, and heavy, consistent use could in theory accumulate enough to register on a blood test. The risk is small for occasional users of compliant products, but anyone using CBD regularly should know Montana measures THC in blood, not impairment.

Reading Labels and Verifying Products

HB 49 imposed labeling standards for retail hemp that mirror the rules for licensed marijuana products. Packages must list THC and CBD content in milligrams per serving, the number of servings per package, and all ingredients. Packaging cannot be designed to appeal to children and must carry required health warnings.¹

Beyond what the law requires, a few shopping habits help. Look for products that link to third-party lab results through a batch number or QR code on the packaging. Those results should confirm the cannabinoid profile and verify the product falls within the legal THC limits. A product that doesn’t list milligrams of THC per serving, or doesn’t offer any testing verification, is worth skipping, especially now that enforcement agencies are actively monitoring retail compliance.

1
Montana State Legislature. 69th Legislature 2025 HB 49
2
FindLaw. Montana Code Title 80 Agriculture 80-18-101
3
Montana State Legislature. Montana Code 16-12-102 – Definitions
4
Montana Department of Public Health and Human Services. CBD and Hemp Guide
5
Food and Drug Administration. FDA Regulation of Cannabis and Cannabis-Derived Products, Including Cannabidiol (CBD)
6
Montana State Legislature. Montana Code 16-12-106 – Personal Use and Cultivation of Marijuana
7
Montana Department of Revenue. Purchasing Power and Identification Requirements at a Dispensary
8
Montana State Legislature. Montana Code 61-8-1002 – Driving Under Influence