Is Weed Legal in Massachusetts?

Is weed legal in Massachusetts?

Massachusetts allows both adult-use and medical cannabis. Adults 21 and older may possess, purchase, and grow limited amounts of marijuana under M.G.L. c.94G, regulated by the Cannabis Control Commission (CCC). A separate medical program under c.94I lets registered patients with qualifying conditions obtain and possess larger quantities. Hemp is legal and regulated separately by the Department of Agricultural Resources under a 0.3% THC threshold; non-food hemp-derived CBD is allowed, but hemp-derived delta-8 THC, smokable raw hemp flower, and CBD in food are banned.

Federal hemp change: from December 11, 2026 the federal definition of hemp counts total THC, including THCA, and final hemp products with more than 0.4 mg of total THC per container are no longer hemp; products with cannabinoids the plant cannot naturally produce stop counting as hemp on November 12, 2026. What changes, state by state (P.L. 119-37 § 781; P.L. 119-103 § 2019).

Official sources General Law – Part I, Title XV, Chapter 94G, Section 7 1 · Know the Laws – Cannabis Control Commission Massachusetts 2 · General Law – Part I, Title XV, Chapter 94C, Section 32L 3 · Industrial Hemp Program – Massachusetts Department of Agricultural Resources 9 · General Law – Part I, Title XV, Chapter 94G, Section 7 10 · FAQs: Sale of Hemp-Derived Products in the Commonwealth 7

Recreational (adult-use) cannabis

Recreational marijuana has been legal in Massachusetts since voters approved it in 2016 (retail sales began in 2018) under M.G.L. c.94G. Adults 21 and older may possess up to 2 ounces on their person and 10 ounces at home, purchase from licensed retailers, and grow their own plants at home. Public consumption remains illegal, and marijuana cannot be transported across state lines.

Official sources General Law – Part I, Title XV, Chapter 94G, Section 7 1 · Know the Laws – Cannabis Control Commission Massachusetts 2 · Industrial Hemp Program – Massachusetts Department of Agricultural Resources 9

Medical marijuana program

Massachusetts' medical marijuana program (M.G.L. c.94I), run by the Cannabis Control Commission, lets qualifying patients with conditions such as cancer, HIV/AIDS, ALS, MS, Parkinson's, Crohn's disease, glaucoma, hepatitis C, or other physician-diagnosed debilitating conditions register at no cost and buy up to a 60-day supply (about 10 ounces). Patients may designate up to two personal caregivers to help with transport and administration. Registration is renewed annually, and there is no reciprocity for out-of-state patients.

How to get a medical marijuana card

Official sources Know the Laws – Cannabis Control Commission Massachusetts 2 · Ten Things New Patients Should Know – Cannabis Control Commission Massachusetts 6 · Certifying Healthcare Providers – Cannabis Control Commission Massachusetts 11 · Frequently Asked Questions – Cannabis Control Commission Massachusetts 4

Possession limits

Adults 21+ may carry up to 2 ounces of marijuana (no more than 10 grams as concentrate) and keep up to 10 ounces at home, with home amounts over 2 ounces required to be locked up. Possession of 3 ounces or less by someone outside the adult-use framework is only a civil offense (up to a $100 fine for those 18-20). Registered medical patients may possess up to a 60-day supply, generally up to 10 ounces.

Official sources General Law – Part I, Title XV, Chapter 94G, Section 7 1 · Frequently Asked Questions – Cannabis Control Commission Massachusetts 4 · Massachusetts Cannabis Control Commission 5 · Ten Things New Patients Should Know – Cannabis Control Commission Massachusetts 6 · General Law – Part I, Title XV, Chapter 94C, Section 32L 3

Buying cannabis

Only adults 21 and older with a valid government-issued ID may purchase adult-use marijuana from a licensed Marijuana Retailer, limited to two ounces (or its concentrate/edible equivalent) per day under Commission rules. Registered medical patients 18 and older (younger patients need parental consent and two physician certifications) may purchase from Medical Marijuana Treatment Centers up to their 60-day supply. Only Massachusetts residents (or their caregivers) may purchase medical marijuana; out-of-state medical cards are not recognized.

Official sources Massachusetts Cannabis Control Commission 5 · Massachusetts Cannabis Control Commission 12 · Ten Things New Patients Should Know – Cannabis Control Commission Massachusetts 6 · Know the Laws – Cannabis Control Commission Massachusetts 2

Growing cannabis at home

Adults 21 and older may grow up to 6 marijuana plants at home for personal use, or up to 12 plants total where two or more adults live. Registered medical patients may grow up to 12 flowering and 12 vegetative plants. The Commission has not yet implemented the Hardship Cultivation Registration, which would let a caregiver grow on a patient's behalf. Plants must be kept in a locked, secured area out of public view, and home extraction using flammable solvents is prohibited.

Official sources General Law – Part I, Title XV, Chapter 94G, Section 7 1 · Know the Laws – Cannabis Control Commission Massachusetts 2 · Frequently Asked Questions – Cannabis Control Commission Massachusetts 4

Penalties

Massachusetts treats civil-level possession (up to 3 ounces) as a non-criminal offense carrying at most a $100 fine for those 18-20; adults 21+ within the legal 2-ounce carry limit face no penalty at all. Unlicensed distribution or cultivation above personal-use limits escalates from misdemeanor charges to felonies with mandatory minimum prison terms as quantity increases, especially near schools or involving minors. Operating a vehicle under the influence of marijuana is a criminal OUI offense, though the law uses an impairment standard rather than a numeric THC limit.

Official sources General Law – Part I, Title XV, Chapter 94C, Section 32L 3 · General Law – Part I, Title XV, Chapter 94C, Section 34 13 · Know the Laws – Cannabis Control Commission Massachusetts 2 · General Law – Part I, Title XIV, Chapter 90, Section 24 8

Product rules: CBD, delta-8 and hemp

Licensed marijuana establishments may sell flower, pre-rolls, concentrates, vape products, and edibles, all subject to Commission testing and labeling requirements (including cannabinoid profile disclosure, with narrow exemptions for items like seeds and clones). Branded merchandise sold by licensees may not itself contain marijuana. Regulatory equivalency treats 1 ounce of flower as equal to 5 grams of THC concentrate or 500 mg of active THC in edibles for purchase and possession calculations.

Federal hemp change: from December 11, 2026 the federal definition of hemp counts total THC, including THCA, and final hemp products with more than 0.4 mg of total THC per container are no longer hemp; products with cannabinoids the plant cannot naturally produce stop counting as hemp on November 12, 2026. What changes, state by state (P.L. 119-37 § 781; P.L. 119-103 § 2019).

Official sources General Law – Part I, Title XV, Chapter 94G, Section 7 10 · FAQs: Sale of Hemp-Derived Products in the Commonwealth 7 · Frequently Asked Questions – Cannabis Control Commission Massachusetts 4 · Massachusetts Cannabis Control Commission 5 · Industrial Hemp Program – Massachusetts Department of Agricultural Resources 9 · Hemp in Massachusetts: FAQs – Massachusetts Department of Agricultural Resources 14

Cannabis taxes

Adult-use retail marijuana sales in Massachusetts carry a 6.25% state sales tax, a 10.75% state cannabis excise tax, and an optional local option tax of up to 3% set by the host municipality, all reported together on the Form MRT Return. Medical marijuana sold to registered, ID-verified patients is exempt from these taxes. The state collected more than $289 million in combined cannabis sales and excise tax revenue in fiscal year 2025.

Official sources Frequently Asked Questions – Cannabis Control Commission Massachusetts 4 · Marijuana Retail Taxes FAQs – Massachusetts Department of Revenue 15

Cannabis business licensing

The Cannabis Control Commission licenses a range of marijuana business types (cultivators, product manufacturers, retailers, testing labs, delivery, and microbusinesses), using priority review for Medical Treatment Centers and Economic Empowerment/Social Equity applicants rather than a lottery. State law sets no statewide cap on the number of retail licenses, though an individual or entity may hold only a limited number of retailer/delivery licenses, and businesses may generally hold multiple license types together. All licensed products must pass Commission-mandated laboratory testing before sale.

Official sources Industrial Hemp Program – Massachusetts Department of Agricultural Resources 9 · Frequently Asked Questions – Cannabis Control Commission Massachusetts 4 · Massachusetts Cannabis Control Commission 5 · Licensing Process – Cannabis Control Commission Massachusetts 16 · General Law – Part I, Title XV, Chapter 94G, Section 5 17 · General Law – Part I, Title XV, Chapter 94G, Section 1 18

Visiting Massachusetts?

• Buying as a visitor: Only adults 21 and older with a valid government-issued ID may purchase adult-use marijuana from a licensed Marijuana Retailer, limited to two ounces (or its concentrate/edible equivalent) per day under Commission rules.
• Out-of-state medical cards and visiting patients: No reciprocity: Massachusetts does not recognize out-of-state medical marijuana cards; only Massachusetts-resident registered patients or their caregivers may buy medical marijuana, from a licensed Medical Marijuana Treatment Center.
• Federal land and airports: cannabis remains illegal in national parks and on other federal land even in states where it is legal, and TSA refers any illegal substance found at airport screening to law enforcement. Do not cross state lines with cannabis.

Official sources Know the Laws – Cannabis Control Commission Massachusetts 2 · Massachusetts Cannabis Control Commission 5 · National Park Service – Shenandoah: alcohol and marijuana policy 19 · TSA – What can I bring? Medical marijuana 20

More on Massachusetts cannabis

Nearby states