How much weed can you buy in Michigan? If you are 21 or older, a licensed adult-use store can sell you up to 2.5 ounces of cannabis in a single transaction, and no more than 15 grams of that can be concentrate. Registered medical patients can buy up to 2.5 ounces a day, with a cap of 10 ounces a month.
Those numbers come from the 2018 voter-approved Michigan Regulation and Taxation of Marihuana Act (MRTMA) and the sales rules of the state’s Cannabis Regulatory Agency (CRA). Michigan also has separate limits for carrying, keeping cannabis at home and growing plants, plus rules on where you can use it.
Last checked: October 2026. Below are the exact limits for adult-use and medical customers, the taxes on your receipt (including the new 24% wholesale tax), and the rules for visitors, drivers and border crossings. Ready to shop? Find licensed Michigan dispensaries near you.
Key takeaways
- Adults 21+ can buy up to 2.5 ounces per transaction at a licensed Michigan store, including no more than 15 grams of concentrate.
- You can carry up to 2.5 ounces in public and keep up to 10 ounces at home. Anything over 2.5 ounces at home must be locked up.
- Each household can grow up to 12 plants, out of public view and behind a lock.
- Adult-use purchases carry a 10% excise tax plus 6% sales tax. A 24% wholesale tax took effect on January 1, 2026, and is still being challenged in court.
- Rules differ by state and province. Always check your local regulator before you buy, carry or travel.
How much weed can you buy in Michigan at one time?
The short answer is 2.5 ounces, which is about 70 grams. Michigan’s sales rule (Mich. Admin. Code R 420.506) says a store may not sell an adult more than 2.5 ounces in a single transaction, and no more than 15 grams of that may be marijuana concentrate.
The adult-use rule is written per transaction, not per day. That does not mean three trips can get you 7.5 ounces: MRTMA only protects adults carrying 2.5 ounces or less, so anything more puts you over the legal limit.
What does 2.5 ounces look like?
Dispensaries usually sell flower in eighths (3.5 grams), quarters (7 grams), halves (14 grams) and ounces (28 grams). The 2.5-ounce cap works out to:
- 20 eighths of flower
- 10 quarters
- 5 half ounces
- 2 full ounces plus one half ounce
What is the Michigan concentrate limit?
Adults can buy and carry no more than 15 grams of concentrate, and it counts inside the 2.5-ounce total. MRTMA defines concentrate as “the resin extracted from any part of a plant,” which covers wax, shatter, rosin, live resin and vape cartridge oil. Buy 15 one-gram cartridges and you have hit the cap, though you could still add about 55 grams of flower to the same order.
Michigan cannabis limits at a glance
Buying, carrying, storing and growing each have their own limit. Here is how they compare as of October 2026.
| Limit | Adult-use (21+) | Registered medical patient |
|---|---|---|
| Purchase | 2.5 oz per transaction | 2.5 oz per day; 10 oz per month |
| Concentrate | 15 g within the 2.5 oz | Counts toward the 2.5 oz daily total |
| Carry in public | 2.5 oz, max 15 g concentrate | 2.5 oz of usable marijuana and equivalents |
| Keep at home | 10 oz (over 2.5 oz must be locked) | 2.5 oz, plus harvest from registered plants |
| Home grow | 12 plants per residence | 12 plants in an enclosed, locked facility |
| Gifting | Up to 2.5 oz to another adult, no payment, not advertised | Rules differ; ask the CRA |
| Minimum age | 21 | Set by the medical program |
| Tax at the register | 10% excise + 6% sales tax | 6% sales tax |
What is the Michigan edible limit?
MRTMA counts infused products as marijuana, so edibles fall under the same 2.5-ounce cap. Michigan’s medical law sets the conversion: 16 ounces of a solid infused product or 36 fluid ounces of a liquid one equal 1 ounce of usable marijuana.
By that math, the limit equals 40 ounces of solid edibles (2.5 pounds) or 90 fluid ounces of infused drinks. Point-of-sale vendors report Michigan stores use this conversion at the register, but the adult-use law does not spell it out, so ask before a large edible order.
How much THC can one edible package hold?
The CRA also caps potency. Under rules updated in 2022, an adult-use edible can have up to 10 mg of THC per serving and 200 mg per package; infused drinks top out at 100 mg per package. Edibles can take much longer to kick in than smoking, so start low and go slow. Our guide to product formats explains the differences.
What are the medical cannabis purchase limits in Michigan?
Michigan still runs a medical program. Registered patients buy from provisioning centers under different rules:
- A daily and a monthly cap. Under R 420.506, a store must check the statewide monitoring system before each sale. A patient may buy up to 2.5 ounces of marijuana or marijuana equivalent per day, and no more than 10 ounces per month.
- Caregiver purchases. A registered caregiver can buy up to 2.5 ounces a day for each patient connected to them, and those purchases count toward each patient’s monthly total.
- Lower tax. Michigan Treasury says valid medical sales are not subject to the 10% excise tax. Patients pay the 6% sales tax.
Patients with a valid card from another US state can also buy at a provisioning center, as long as the store verifies the card and a government-issued photo ID, according to the CRA.
Possession limits at home vs. in public
In public
Adults 21 and older can carry and transport up to 2.5 ounces, with no more than 15 grams as concentrate. A full-limit purchase leaves no room for anything already in your bag.
At home
Inside your residence, you can keep up to 10 ounces. Any amount over 2.5 ounces must be stored in a container or area with locks or other security devices. A lockbox works; a jar on the counter does not.
What happens if you go over?
Up to twice the limit is a civil infraction under MRTMA Section 15: up to a $500 fine plus forfeiture the first time, up to $1,000 the second, and a misdemeanor the third. More than twice the limit is a misdemeanor.
How many plants can you grow in Michigan?
Up to 12 plants per residence, not per person, so roommates share one limit. Plants must not be visible from a public place without binoculars and must be in an enclosed, locked area. Landlords may ban growing and smoking, but a lease cannot stop a tenant from lawfully possessing cannabis. You may also gift up to 2.5 ounces to another adult, unpaid and unadvertised.
Michigan dispensary ID rules, hours and out-of-state visitors
Rule R 420.505 says stores must see a valid driver’s license or government-issued photo ID proving you are 21 or older. Out-of-state licenses and passports qualify. Hours are set by cities and townships, not the state; Detroit, for example, limits adult-use retailers to 9 a.m. to 10 p.m. daily. If this is your first trip, our first dispensary visit guide walks through the check-in process.
Can out-of-state visitors buy weed in Michigan?
Yes. The adult-use law covers anyone 21 or older, not just residents, with the same 2.5-ounce limits. The harder part is finding a legal place to consume, since hotels and rentals can ban smoking. Our state-by-state legality guide covers the rules back home.
How much is the cannabis tax in Michigan?
Adult-use purchases carry two taxes at the register. MRTMA sets a 10% excise tax on retail sales, and Michigan’s 6% sales tax applies on top. Michigan Treasury says the sales tax is figured on the price plus the excise tax, so the two stack.
Treasury’s own example: on a $100 purchase, the excise is $10 and sales tax is 6% of $110, or $6.60. Your total is $116.60, about 16.6% over the shelf price, unless the menu already includes tax.
The 24% wholesale tax: status as of October 2026
The Comprehensive Road Funding Tax Act, signed October 7, 2025, adds a 24% tax on the wholesale price of adult-use cannabis from January 1, 2026. The business making the first sale to a retailer pays it, not shoppers, though costs can be passed along. It is in force but disputed:
- December 2025: The Michigan Court of Claims declined to block the tax before it started, but let part of the industry’s challenge move forward.
- January 2026: The Court of Claims denied the state’s request to reconsider, and the Court of Appeals refused the industry’s request to skip ahead, so the case stays in the Court of Claims.
- March 2026: The Michigan Cannabis Industry Association filed a second lawsuit, arguing the tax is a “tax on a tax.”
- Summer 2026: Lawmakers introduced repeal bills, including Senate Bill 810 and House Bill 6224. Neither had passed as of our last check.
Collections have lagged: about $34 million in the first quarter of 2026 against a projected $105 million per quarter, according to reports citing state data.
Where can you consume cannabis in Michigan?
MRTMA does not allow consuming cannabis in a public place, such as sidewalks, parks, bars and restaurants. Property owners and managers can also ban smoking.
- Private homes: Allowed, with the property owner’s permission.
- Licensed consumption lounges: The CRA licenses “designated consumption establishments” and temporary marijuana events where adults can consume on site. Local governments decide whether to allow them.
- Dispensaries: Not allowed, unless the business also holds one of those consumption licenses.
- Vehicles: MRTMA does not allow smoking in the passenger area of a vehicle on a public road.
Can you drive after using cannabis in Michigan?
No. MRTMA does not protect anyone operating a car, boat, snowmobile, off-road vehicle or aircraft while under the influence of cannabis, and impaired driving is a crime. Keep purchases sealed and out of reach, and use a ride service or designated driver if you have consumed.
Can you take Michigan weed across state lines?
No. Michigan’s protections stop at the state line, and moving cannabis between states is illegal under federal law, even between two legal states. Indiana, on Michigan’s southern border, has not legalized adult-use cannabis.
Canada sits across the river from Detroit and Port Huron. The Government of Canada says taking cannabis across its border is illegal in either direction, even though both sides have legalized it. Leave none in your car before the bridge or tunnel.
Your Michigan cannabis buying checklist
- Bring a valid, unexpired government-issued photo ID showing you are 21 or older.
- Keep each order at or under 2.5 ounces, with no more than 15 grams of concentrate.
- Count what you already have on you. The public carry limit is also 2.5 ounces.
- For large edible or drink orders, ask how the store counts them toward the limit.
- Budget about 16.6% extra for the 10% excise and 6% sales tax, unless tax is already included.
- Check the store’s hours, which are set by the local city or township.
- Plan to consume in a private home or licensed lounge, and lock up anything over 2.5 ounces at home.
- Never drive after consuming, and never cross a state or national border with cannabis.
For dispensary owners: help Michigan shoppers find you
Michigan buyers search for clear answers about limits, hours and taxes before they visit. A complete listing with your hours, payment options and whether your prices include tax helps them pick your store. List your dispensary on WhereLeaf for free, or see our featured listing packages to show up first in your city.
Frequently asked questions
How much weed can you buy in Michigan per day?
For adults 21 and older, the sales rule caps each transaction at 2.5 ounces, and you cannot legally carry more than 2.5 ounces in public. Registered medical patients have a true daily limit of 2.5 ounces and a monthly limit of 10 ounces.
Can you buy an ounce of concentrate in Michigan?
No. Adults can buy and carry no more than 15 grams of concentrate, which is a little more than half an ounce. That 15 grams counts toward the 2.5-ounce total.
Do you need a Michigan ID to buy weed in Michigan?
No. Any valid government-issued photo ID proving you are 21 or older works, including an out-of-state license or a passport. Medical purchases also need a valid medical card.
How much weed can you have at home in Michigan?
Up to 10 ounces at your residence. Any amount over 2.5 ounces must be kept in a locked container or area.
Is Michigan’s 24% marijuana tax still in effect?
Yes, as of October 2026. The tax took effect on January 1, 2026, and court challenges and repeal bills are still pending. It is charged at the wholesale level, so you will not see it as a line on your receipt.
Can you smoke weed in a Michigan hotel?
Only if the hotel allows it. MRTMA lets property owners ban smoking, and many hotels do. Ask before you book, or look for a licensed consumption lounge.
Sources
- Michigan Legislature: MCL 333.27955, Michigan Regulation and Taxation of Marihuana Act, Section 5 (2018, current 2026)
- Michigan Legislature: MCL 333.27954, MRTMA Section 4, Limitations (2018, current 2026)
- Michigan Legislature: MCL 333.27953, MRTMA Section 3, Definitions (2018, current 2026)
- Michigan Legislature: MCL 333.27965, MRTMA Section 15, Penalties (2018, current 2026)
- Michigan Legislature: MCL 333.26424, Michigan Medical Marihuana Act, Section 4 (current 2026)
- Legal Information Institute: Mich. Admin. Code R 420.506, Purchasing limits (2026)
- Legal Information Institute: Mich. Admin. Code R 420.505, Sale or transfer requirements (2026)
- Michigan Cannabis Regulatory Agency: Can provisioning centers accept visiting patient cards? (2026)
- Michigan Cannabis Regulatory Agency: Do I need a license for a social/cannabis club? (2026)
- Michigan Department of Treasury: About the Marijuana Retailers Excise Tax (2026)
- Michigan Department of Treasury: Revenue Administrative Bulletin 2020-17, Taxation of Marihuana (2020)
- Michigan Department of Treasury: Revenue Administrative Bulletin 2026-3, Wholesale Marihuana Tax (2026)
- CPA Practice Advisor: Marijuana group appeals court order upholding Michigan’s 24% wholesale tax (2025)
- Michigan Court of Claims: Opinion and order denying reconsideration, Docket 25-000159-MT (2026)
- Michigan Public: Appeals court denies bypass request in case over new 24% marijuana tax (2026)
- Michigan Public: Cannabis industry files new legal challenge to Michigan’s 24% marijuana wholesale tax (2026)
- The Marijuana Herald: Michigan lawmaker files bill to repeal 24% wholesale marijuana tax (2026)
- Michigan Public: Michigan cannabis agency boosts maximum THC in edibles (2022)
- Network for Public Health Law: THC limits for adult-use cannabis products (2022)
- Treez: Michigan purchase limits for adult use vs. medical (2024)
- City of Detroit: Adult-use marijuana retail locations hours of operation (2025)
- Government of Canada: Cannabis and the border (2026)
Last updated: October 2026. Laws and prices change; always check your state or provincial regulator.
