Marijuana is legal in Massachusetts for adults 21 and older, including possession, purchases from licensed stores, delivery and home cultivation. Massachusetts also operates a separate medical marijuana program that provides registered patients with higher possession and cultivation limits and tax-free purchases.
As of April 19, 2026, adults may possess up to 2 ounces of marijuana outside their home, double the state’s previous 1-ounce limit. Adults may possess up to 10 ounces at their primary residence, along with marijuana produced by plants legally grown there.
Adults may grow up to six marijuana plants each, with a maximum of 12 plants at a residence regardless of how many adults live there.
This page covers Massachusetts marijuana possession limits, purchases, home cultivation, medical marijuana, taxes, delivery, public consumption and penalties. For laws in other states, visit The Marijuana Herald’s Marijuana Laws by State guide.
Last updated: September 13, 2026
Massachusetts Marijuana Laws at a Glance
| Law | Current Rule |
|---|---|
| Recreational marijuana | Legal for adults 21 and older |
| Adult possession outside the home | Up to 2 ounces or equivalent |
| Possession at primary residence | Up to 10 ounces, plus marijuana produced by legal home-grown plants |
| Recreational sales | Legal |
| Recreational home grow | Up to 6 plants per adult, maximum 12 per residence |
| Medical marijuana | Legal |
| Standard medical allowance | 10 ounces per 60 days |
| Medical home grow | Up to 12 flowering and 12 vegetative plants |
| Public consumption | Illegal |
| Adult-use delivery | Legal |
| Adult-use marijuana taxes | 6.25% sales tax + 10.75% marijuana excise tax + up to 3% local tax |
| Medical marijuana tax | Generally tax-exempt |
| Minimum recreational age | 21 |
Is Recreational Marijuana Legal in Massachusetts?
Yes. Recreational marijuana is legal in Massachusetts for adults 21 and older.
Massachusetts voters approved Question 4 in November 2016, legalizing recreational possession and home cultivation. Licensed recreational marijuana stores began sales in November 2018.
Adults may purchase marijuana from businesses licensed by the Massachusetts Cannabis Control Commission without registering as medical marijuana patients.
Massachusetts significantly expanded its adult possession law in 2026. Chapter 65 of the Acts of 2026 increased the amount an adult may legally possess, purchase or give another adult without payment from 1 ounce to 2 ounces effective April 19.
How Much Marijuana Can You Possess in Massachusetts?
An adult 21 or older may possess up to 2 ounces of marijuana outside their primary residence.
At home, an adult may possess up to 10 ounces of marijuana, as well as marijuana produced by plants legally cultivated on the property.
Marijuana exceeding 2 ounces inside the home must generally be secured by a lock. Failure to properly secure more than 2 ounces can result in a civil penalty of up to $100 and forfeiture of the marijuana.
The 2-ounce public possession limit took effect April 19, 2026. Before that date, Massachusetts generally limited adult possession outside the home to 1 ounce.
How Much Marijuana Can You Buy in Massachusetts?
Adults 21 and older may currently purchase up to 2 ounces of marijuana or its equivalent from a licensed adult-use retailer per transaction and per day.
Following the April 2026 law change, the Cannabis Control Commission issued an administrative order establishing temporary equivalency standards while permanent regulations are developed.
Under those standards:
- 2 ounces of marijuana flower is the maximum daily flower amount
- 10 grams of active THC in marijuana concentrate is treated as equivalent to 2 ounces of flower
- 1,000 milligrams of active THC in edible marijuana products is treated as equivalent to 2 ounces of flower
Retailers cannot knowingly sell a consumer more than the applicable 2-ounce equivalent during a single transaction or during the same day.
Can Tourists Buy Marijuana in Massachusetts?
Yes.
Adults 21 and older may purchase recreational marijuana from licensed Massachusetts retailers regardless of whether they live in the state.
Visitors are subject to the same adult-use possession and purchasing rules as Massachusetts residents.
However, marijuana purchased in Massachusetts cannot legally be taken across state lines. That remains true even if the destination state also allows recreational marijuana.
Federal law also applies on federal property located within Massachusetts.
Can You Grow Marijuana at Home in Massachusetts?
Yes.
An adult 21 or older may grow up to six marijuana plants at their primary residence.
If two or more adults live at the residence, the household may grow no more than 12 plants total.
The plants must:
- Be grown at the person’s primary residence
- Be kept in an area equipped with a lock or other security device
- Not be visible from a public place without the use of binoculars, aircraft or other optical aids
Violating the visibility or security requirements can result in a civil penalty of up to $300 and forfeiture of the marijuana.
People who rent their homes should also check their leases. Massachusetts landlords may restrict marijuana cultivation on rental property.
How Much Home-Grown Marijuana Can You Keep?
Massachusetts allows adults to possess marijuana produced by plants legally grown at their residence in addition to the ordinary 10-ounce residential possession allowance.
This means a legal home grow can produce more than 10 ounces without automatically putting the grower in violation of the 10-ounce home-possession limit.
Marijuana kept at home above the amount that can remain unsecured must be stored under lock.
Is Medical Marijuana Legal in Massachusetts?
Yes. Massachusetts operates a comprehensive Medical Use of Marijuana Program overseen by the Cannabis Control Commission.
A qualifying patient must generally obtain certification from a registered healthcare professional and complete registration with the state.
Registered patients may purchase medical marijuana from licensed medical marijuana establishments and receive several advantages over recreational consumers, including higher possession limits, greater home cultivation allowances and exemption from adult-use marijuana taxes.
What Conditions Qualify for Medical Marijuana in Massachusetts?
Massachusetts specifically identifies the following qualifying debilitating medical conditions:
- Cancer
- Glaucoma
- HIV/AIDS
- Hepatitis C
- Amyotrophic lateral sclerosis, or ALS
- Crohn’s disease
- Parkinson’s disease
- Multiple sclerosis
However, the list is not exclusive.
A registered healthcare professional may also certify a patient for another debilitating medical condition when the provider determines in writing that the patient qualifies.
This gives Massachusetts providers considerable discretion compared with states that restrict medical marijuana access to a fixed list of diagnoses.
How Much Medical Marijuana Can Patients Possess in Massachusetts?
Massachusetts defines a standard 60-day medical marijuana supply as 10 ounces of usable marijuana or its equivalent in other forms.
A certifying healthcare professional may determine that a patient requires a different amount based on the patient’s medical needs.
Licensed medical marijuana businesses generally cannot sell a patient an amount that would exceed the patient’s authorized 60-day supply.
Newly certified patients can also receive temporary initial access while their full registration is being processed. The Cannabis Control Commission defines the standard initial 14-day supply as 2.5 ounces, although a healthcare provider may authorize a different amount.
Can Medical Marijuana Patients Grow at Home in Massachusetts?
Yes.
Registered medical marijuana patients may grow substantially more than recreational consumers.
Under current Cannabis Control Commission rules, a registered qualifying patient may possess and cultivate up to:
- 12 flowering marijuana plants
- 12 vegetative marijuana plants
- Clones and cuttings, which are excluded from those plant limits
If a patient needs to grow more than 12 flowering and 12 vegetative plants at a residence to maintain the patient’s authorized 60-day supply, a Hardship Cultivation Registration is required.
Medical cultivation must take place in an enclosed, locked area that is not visible from a street or other public location.
What Are the Benefits of a Massachusetts Medical Marijuana Card?
Massachusetts’ medical program provides several meaningful advantages even though recreational marijuana is legal.
Registered patients receive:
- A standard 10-ounce medical allowance per 60 days
- Higher home cultivation limits of up to 12 flowering and 12 vegetative plants
- Access to medical marijuana businesses and medical delivery
- Exemption from state adult-use marijuana taxes
- Access for qualifying patients younger than 21
- The ability for a healthcare professional to authorize a different 60-day supply when medically appropriate
Medical marijuana sales to registered patients are exempt from Massachusetts’ 6.25% sales tax, 10.75% marijuana excise tax and local marijuana option tax.
For frequent consumers who qualify medically, the tax exemption alone can represent a substantial savings compared with adult-use purchases.
Does Massachusetts Accept Out-of-State Medical Marijuana Cards?
Massachusetts does not have broad medical marijuana reciprocity allowing anyone with an out-of-state medical card to purchase marijuana as a Massachusetts medical patient.
The state generally requires medical patients to be Massachusetts residents. However, current regulations provide exceptions for certain nonresidents receiving cancer treatment, end-of-life care or palliative care in Massachusetts.
Visitors who are at least 21 may purchase marijuana from adult-use stores regardless of whether Massachusetts recognizes their medical card.
An out-of-state medical card by itself does not provide the tax advantages or higher allowances available to registered Massachusetts medical patients.
Can You Give Marijuana to Another Adult in Massachusetts?
Yes.
An adult 21 or older may give another adult up to 2 ounces of marijuana or the equivalent amount of marijuana products without payment.
The transfer cannot involve compensation and cannot be advertised or promoted to the public.
The gifting allowance also increased from 1 ounce to 2 ounces under the 2026 cannabis modernization law.
Businesses cannot evade marijuana licensing rules by selling another item and claiming marijuana is a free gift tied to the purchase.
Where Can You Use Marijuana in Massachusetts?
Marijuana consumption remains prohibited in public places.
A person may not consume marijuana in public or smoke marijuana in a location where tobacco smoking is prohibited. A violation can result in a civil fine of up to $100.
Marijuana generally may be used on private property where the property owner allows it.
Massachusetts adopted regulations allowing future licensed social consumption establishments, but as of September 13, 2026, social consumption businesses are not yet operational. The Cannabis Control Commission says it expects to begin accepting applications for the first license category by the end of 2026.
Until licensed locations begin operating, consumers should not assume marijuana can legally be used at a bar, restaurant or other public-facing business.
Can You Use Marijuana in a Car in Massachusetts?
No.
Using marijuana while driving is illegal, and operating a vehicle while impaired by marijuana can result in an operating-under-the-influence charge.
Massachusetts also prohibits open containers of marijuana or marijuana products in the passenger area of a vehicle on a public road or in another area accessible to the public.
An open marijuana container should be stored in the trunk, locked glove compartment or another area outside the vehicle’s passenger compartment.
Violating the marijuana open-container rule can result in a civil fine of up to $500.
Is Marijuana Delivery Legal in Massachusetts?
Yes.
Licensed businesses may deliver recreational marijuana to adults 21 and older, and authorized businesses may deliver medical marijuana to registered patients and caregivers.
Massachusetts significantly changed its delivery rules in 2026.
Chapter 65 provides that adult-use delivery is generally allowed statewide unless a municipality that does not authorize marijuana retailers obtains a waiver from the Cannabis Control Commission allowing it to prohibit delivery.
Medical marijuana delivery is allowed throughout all 351 Massachusetts cities and towns regardless of whether the municipality restricts recreational delivery.
Consumers receiving adult-use delivery must be at least 21 and satisfy identification requirements.
Can Local Governments Ban Marijuana Businesses?
Massachusetts cities and towns retain considerable authority over marijuana businesses through zoning and local approvals.
Municipalities may regulate where marijuana establishments operate and impose certain local requirements.
However, state law governs how far local restrictions can go, and the rules differ depending on whether a municipality voted in favor of or against the original statewide marijuana legalization initiative.
Cities and towns may also impose an additional local marijuana tax of up to 3%.
Social consumption establishments require local authorization before they can operate.
How Is Recreational Marijuana Taxed in Massachusetts?
Recreational marijuana purchases can be subject to three separate taxes:
| Tax | Rate |
|---|---|
| Massachusetts sales tax | 6.25% |
| State marijuana excise tax | 10.75% |
| Optional local marijuana tax | Up to 3% |
| Maximum combined rate | 20% |
A municipality that imposes the full 3% local tax therefore brings the combined marijuana tax rate to 20%.
Medical marijuana purchases by registered patients are exempt from all three marijuana retail taxes.
What Are the Penalties for Possessing Too Much Marijuana in Massachusetts?
Massachusetts substantially changed its possession penalties in April 2026.
For adults 21 and older:
| Amount Outside the Home | Current Treatment |
|---|---|
| Up to 2 ounces | Legal |
| More than 2 ounces through 3 ounces | Civil violation, up to $100 fine and forfeiture of excess marijuana |
| More than 3 ounces | Can result in criminal prosecution |
An adult 21 or older who possesses more than 2 ounces but no more than 3 ounces outside the home faces only a civil penalty of up to $100 and forfeiture of the unauthorized marijuana.
Possession exceeding 3 ounces outside the protections of Massachusetts’ marijuana laws can result in a first-offense penalty of up to six months in a house of correction, a fine of up to $500 or both.
The rules are different inside a person’s primary residence. Adults may possess up to 10 ounces at home, plus marijuana produced by legally cultivated plants.
What Are the Marijuana Possession Rules for People Under 21?
People younger than 21 generally cannot legally possess recreational marijuana.
As of April 19, 2026, possession of up to 3 ounces by someone between 18 and 20 is a civil offense carrying a $100 penalty and forfeiture of the marijuana.
People younger than 18 face similar civil consequences but are also required to complete a drug awareness program. Parents or guardians are notified, and failure to complete the required program can lead to additional consequences.
Registered qualifying medical marijuana patients are treated separately under Massachusetts’ medical marijuana laws.
What Are the Penalties for Violating Home-Grow Rules?
Adults may grow up to six plants individually, with no more than 12 plants at a residence.
An adult 21 or older who exceeds the individual six-plant allowance but grows no more than 12 plants may face a civil fine of up to $100 and forfeiture of the plants exceeding the legal allowance. Medical marijuana patients may qualify for different plant limits.
Growing plants where they are visible from a public place or failing to keep the cultivation area secured can result in a civil penalty of up to $300 and forfeiture.
What Changed With Massachusetts Marijuana Laws in 2026?
Massachusetts enacted one of its most substantial marijuana law overhauls in years in April 2026.
Possession Limit Doubled
Chapter 65 of the Acts of 2026 increased the legal adult possession limit outside the home from 1 ounce to 2 ounces.
The law also increased the amount adults may give another adult without payment from 1 ounce to 2 ounces.
Purchase Limits Increased
Following the law’s enactment, the Cannabis Control Commission issued an administrative order allowing licensed retailers to sell up to 2 ounces of flower or its equivalent per customer per day.
The Commission currently treats 10 grams of active THC in concentrate or 1,000 milligrams of active THC in edibles as equivalent to 2 ounces of flower for these retail limits.
Civil Possession Threshold Increased
The amount an adult may possess outside the home before moving beyond a civil-only violation increased as well.
Possession of more than 2 ounces but no more than 3 ounces by an adult 21 or older is now generally punishable only by a civil fine of up to $100 and forfeiture.
Delivery Rules Expanded
The 2026 law made adult-use marijuana delivery generally legal statewide unless a municipality without marijuana retailers receives a waiver from the Cannabis Control Commission allowing it to prohibit delivery.
Social Consumption Continued Moving Forward
New social consumption regulations took effect January 2, 2026, establishing a framework for licensed locations where adults could eventually purchase and consume marijuana on site.
However, those businesses are not yet operating. As of September 2026, the Cannabis Control Commission was still implementing the licensing system and expects to begin accepting applications for the first social consumption license type by the end of the year.
Are THCA, Delta-8 and Hemp-Derived THC Legal in Massachusetts?
Massachusetts allows some hemp-derived products, but intoxicating hemp products face significant restrictions. The state does not allow hemp-derived delta-8 THC products to be processed or sold, treating commercially produced delta-8 as a synthetically derived controlled substance.
Raw hemp flower also cannot be sold through ordinary retail stores, which effectively prevents THCA flower from being sold as a general-market hemp product. Hemp flower may instead be sold through businesses licensed by the Cannabis Control Commission under the state’s regulated marijuana system. Massachusetts also generally prohibits adding hemp-derived CBD or THC to foods and beverages sold in the state.
Related Marijuana Laws and Protections
Residents should also be aware that legalization does not eliminate restrictions on impaired driving or guarantee workplace protections. See our guides to marijuana DUI laws by state and marijuana employment laws for a broader look at how Illinois compares with other states.
People with past marijuana convictions may also qualify for record-clearing relief. Our Marijuana Expungement Laws by State guide explains how all 50 states handle expungement and related relief.
Official Sources
- Massachusetts General Laws Chapter 94G, Section 7: Personal Use of Marijuana
- Massachusetts General Laws Chapter 94G, Section 13: Marijuana Penalties
- Massachusetts Cannabis Control Commission: Know the Laws
- Massachusetts Cannabis Control Commission: Home Cultivation
- Massachusetts Cannabis Control Commission: Medical Marijuana Patient Registration
- Massachusetts Department of Revenue: Marijuana Retail Taxes
- Chapter 65 of the Acts of 2026: An Act Modernizing the Commonwealth’s Cannabis Laws
