Adults 21 and older can buy up to 2.5 ounces of cannabis in a single transaction at any licensed Michigan retailer, with no more than 15 grams of that amount in concentrate form like wax, shatter, or vape cartridges.1Legal Information Institute. Michigan Admin Code R 420.506 – Purchasing Limits, Transactions, Marihuana Sales Location The cap is per transaction, not per day, because Michigan’s 2018 recreational law doesn’t set a 24-hour ceiling on purchases.2Michigan Legislature. Michigan Regulation and Taxation of Marihuana Act Initiated Law 1 of 2018 The purchase limit is only half the picture, though. Possession, transport, and tax rules kick in the moment you walk out the door.
The Limit at the Register
The rule is simple: 2.5 ounces of usable cannabis per transaction, with concentrate capped at 15 grams inside that 2.5-ounce total. Retailers can also sell up to three immature plants (clones or seedlings) in the same transaction.1Legal Information Institute. Michigan Admin Code R 420.506 – Purchasing Limits, Transactions, Marihuana Sales Location
Because the cap is per transaction, nothing in the law itself stops you from buying 2.5 ounces, leaving, and buying another 2.5 ounces at the same or a different store. In practice, budtenders flag purchases that push a customer past the limit, and the separate possession limits below mean that walking around with more than 2.5 ounces creates its own problems.
The rules apply the same way to Michigan residents and out-of-state visitors. Bring a valid government-issued photo ID showing you’re at least 21.3Michigan Legislature. MCL Section 333.27954 – Michigan Regulation and Taxation of Marihuana Act
How Edibles and Concentrates Count Toward Your 2.5 Ounces
When you buy anything other than raw flower, the dispensary converts it to a flower equivalent to measure against the 2.5-ounce cap. Michigan’s rules set the conversions this way:4Legal Information Institute. Michigan Admin Code R 420.403
- Solid edibles like gummies, chocolates, and baked goods: 16 ounces of product equals 1 ounce of flower.
- Cannabis beverages: 36 fluid ounces of product equals 1 ounce of flower.
- Concentrates like wax, shatter, and vape cartridges: measured by actual weight, capped at 15 grams inside the 2.5-ounce transaction total.
The math matters most when you’re mixing product types. Buy an ounce of flower and a pound of edibles, and the edibles count as one more ounce toward the cap, leaving room for only half an ounce more of flower equivalent. The point of sale system handles the arithmetic, but knowing the conversions helps you plan a mixed cart before you get to the counter.
How Much You Can Keep After You Buy
Michigan draws a clear line between what you can carry in public and what you can keep at home.5Michigan Legislature. Michigan Regulation and Taxation of Marihuana Act Initiated Law 1 of 2018
- Outside your home: up to 2.5 ounces on your person, with no more than 15 grams in concentrate form.
- Inside your home: up to 10 ounces, plus any cannabis produced by plants you’re growing on the property.
Anything over 2.5 ounces stored at home has to be kept in a locked container or a secured area that prevents unauthorized access.3Michigan Legislature. MCL Section 333.27954 – Michigan Regulation and Taxation of Marihuana Act A lockbox, a safe, or a room with a working lock counts. A kitchen drawer doesn’t.
Transporting Cannabis in Your Vehicle
This is where legal buyers get themselves into trouble. Under Michigan law, usable marijuana in a vehicle has to be in an enclosed case stored in the trunk. If the vehicle doesn’t have a trunk, the case has to sit somewhere not readily accessible from the interior.6Michigan Courts. Transporting or Possessing Non-Enclosed Usable Marihuana in or Upon a Vehicle For an SUV or hatchback, that usually means the far back cargo area rather than the back seat.
The sealed exit bag your dispensary provides can work as the enclosed case, but keeping it in the trunk is the safer approach. An open container visible in the cabin turns an ordinary traffic stop into something else.
What You’ll Actually Pay
Recreational cannabis in Michigan carries a 10% state excise tax on top of the standard 6% sales tax.2Michigan Legislature. Michigan Regulation and Taxation of Marihuana Act Initiated Law 1 of 2018 That’s 16% combined at the state level before any local tax a municipality tacks on. A $50 shelf price runs at least $58 at checkout. Build taxes into your budget, especially if you’re stacking a mixed cart toward the 2.5-ounce limit.
Home Delivery
Licensed Michigan retailers can deliver recreational cannabis to your home if the state has approved their delivery procedures.7Legal Information Institute. Michigan Admin Code R 420.207 – Marihuana Delivery The same 2.5-ounce transaction limit applies. The driver verifies your age with a government-issued photo ID at the door, and deliveries can only go to a residential address or a licensed consumption establishment.
Delivery vehicles carry a GPS device, and drivers can’t transport more than 15 ounces of cannabis or 60 grams of concentrate across all their pending orders at any one time.7Legal Information Institute. Michigan Admin Code R 420.207 – Marihuana Delivery Deliveries run only during the retailer’s regular hours, and not every dispensary offers the service, so check first.
Not Every Michigan City Has a Dispensary
Michigan lets each city, village, and township opt out of allowing recreational cannabis businesses. Use and possession stay legal statewide in opt-out communities, but no stores can operate there. More than 1,300 of Michigan’s roughly 1,773 municipalities have opted out. Before driving to a specific town, especially in rural areas, verify that a licensed retailer actually operates there. The state’s Cannabis Regulatory Agency publishes a directory of licensed retailers.
Penalties for Going Over
Michigan’s penalties for exceeding the possession limits are tiered, and the first two rungs aren’t criminal:8Michigan Legislature. MCL Section 333.27965 – Michigan Regulation and Taxation of Marihuana Act
- Between 2.5 and 5 ounces in public (or 10 to 20 ounces at home), first offense: civil infraction, fine up to $500, plus forfeiture.
- Same range, second offense: civil infraction, fine up to $1,000, plus forfeiture.
- Same range, third or subsequent offense: misdemeanor, fine up to $2,000, plus forfeiture.
- More than double the legal amount (over 5 ounces in public or 20 ounces at home): misdemeanor. Jail time generally isn’t on the table unless the conduct was habitual, intentional, and for commercial purposes, or involved violence.
Federal Law Hasn’t Changed
Michigan’s law doesn’t touch federal prohibition. Cannabis is still a federally controlled substance, and that matters in a few specific places. Carrying it across state lines is a federal offense even between two legal states. Bringing it on any aircraft is prohibited, and the FAA can permanently revoke a pilot’s certificate for knowingly transporting it.9Federal Aviation Administration. Marijuana Can’t Fly Possession on federal property inside Michigan, including national parks, VA hospitals, military bases, post offices, and federal courthouses, remains illegal, with a first offense for simple possession carrying up to a year in prison and a minimum $1,000 fine.10Office of the Law Revision Counsel. 21 USC 844 – Penalties for Simple Possession Federal employers and contractors covered by the Drug-Free Workplace Act can still enforce zero-tolerance policies, and Department of Transportation drug testing rules for safety-sensitive jobs like trucking and aviation are unchanged.