Massachusetts Cannabis Laws (2026): Sales, Limits & Penalties

Quick Answer: Massachusetts Cannabis Legality Overview

Massachusetts permits cannabis on two tracks. Adult-use (recreational) cannabis is legal for individuals 21 and older under M.G.L. Chapter 94G. Medical cannabis is legal for registered patients with qualifying conditions under M.G.L. Chapter 94I.

Both tracks operate within a licensed, regulated commercial market covering cultivation, manufacturing, independent testing, and retail sales. Home cultivation is permitted for adults within defined plant limits. Neither track removes federal legal exposure, which matters most for businesses.

Recreational Cannabis Laws in Massachusetts

Adult-use cannabis is governed by M.G.L. Chapter 94G and 935 CMR 500.000.

Age and Possession Limits

Individuals must be 21 or older to purchase, possess, or consume recreational cannabis (M.G.L. Chapter 94G, Section 7). Possession limits are:

M.G.L. Chapter 94G, Section 7 sets the 1-ounce personal limit and 10-ounce home limit for flower. For concentrate and edible equivalency limits, consult the Cannabis Control Commission (CCC) guidance, as 935 CMR 500.000 details the equivalency framework.

Where You Can and Cannot Consume

Consumption is legal on private property with owner permission. Public consumption is prohibited (M.G.L. Chapter 94G, Section 7), including sidewalks, parks, vehicles, and public spaces. Landlords and property owners may prohibit cannabis on their premises; renters should check leases.

State regulators created a limited on-site social consumption pilot program in 2019 under 935 CMR 500.000. For current status of licensed consumption facilities, consult the CCC's license search tool, as the pilot program's rollout has been gradual.

Driving Under the Influence

Operating a vehicle under the influence of cannabis is illegal in Massachusetts, regardless of possession status. Law enforcement uses field sobriety testing and other evidence. Massachusetts law has no per se THC blood-level limit equivalent to the 0.08% alcohol standard, but impairment-based OUI charges apply.

Home Cultivation

Adults 21 and older may cultivate cannabis at home (M.G.L. Chapter 94G, Section 7):

• Up to 6 plants per adult resident
• No more than 12 plants per household, regardless of how many adults live there

Plants must not be visible from public view and must be secured from minor access. Selling homegrown cannabis without a license is a criminal offense.

Massachusetts Medical Cannabis Program: Patient and Caregiver Guide

The medical program operates under M.G.L. Chapter 94I and 105 CMR 725.000.

Qualifying Conditions

Massachusetts uses a physician-driven certification model. A certifying physician determines if a patient has a debilitating medical condition. The state's list of qualifying conditions under 105 CMR 725.000 includes:

• Cancer
• Glaucoma
• HIV/AIDS
• Hepatitis C
• ALS (Lou Gehrig's Disease)
• Crohn's disease
• Parkinson's disease
• Multiple sclerosis
• Other conditions as determined in writing by a qualifying patient's physician

The "other conditions" provision grants physicians discretion. If a condition causes debilitating symptoms and a licensed physician certifies it, the patient may qualify. Consult the Department of Public Health (DPH) or a certifying physician for current eligibility.

Getting a Medical Cannabis Card

The process involves three steps:

1. Physician certification. A Massachusetts-licensed physician with a bona fide patient relationship must provide written certification under 105 CMR 725.000. Telemedicine certifications are available via approved platforms.
2. Patient registration. Register with the Medical Use of Marijuana Program (MUMP), administered by the Massachusetts Department of Public Health via its online portal.
3. Card issuance. Once approved, patients receive a medical cannabis card allowing purchases from licensed Medical Marijuana Treatment Centers (MMTCs).

Caregiver Rules

A registered patient may designate a personal caregiver under 105 CMR 725.000. Caregivers must register with the state, be 21 or older, and may assist no more than one patient unless the patient is a minor or resides in a healthcare facility. Caregivers can purchase and transport cannabis for their patient but cannot consume it under the caregiver designation.

Patient Possession Limits

Registered patients may possess a 60-day cannabis supply as determined by their certifying physician (105 CMR 725.000). The default 60-day supply is 10 ounces; a physician may certify a different amount based on medical need. This limit exceeds the recreational possession allowance.

Business and Licensing Regulations for Cannabis in MA

The Cannabis Control Commission (CCC) is the regulatory authority for both adult-use and medical cannabis businesses (M.G.L. Chapter 94G, Section 4). The CCC issues licenses, enforces compliance, and promulgates rules under 935 CMR 500.000 (adult use) and 935 CMR 501.000 (medical use).

License Types