Is There a Daily Purchase Limit for Recreational Cannabis?

Short answer

Few states write a daily cap into law. The common rule is a per-transaction cap. Colorado, Washington, Arizona, Massachusetts, Nevada, and Illinois limit how much one customer can buy in one sale. The store logs each sale in a state track-and-trace system. A customer can leave and return the same day. The rule text does not block that.

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Numbers to expect

Flower is the main measure. The smallest caps are 1 oz (28 g) in Colorado, Washington, Arizona, Nevada, and Rhode Island. Missouri, New York, and Ohio allow 3 oz. Michigan allows 2.5 oz. Maine and New Mexico allow 2 oz. Connecticut and Maryland allow 1.5 oz.

How Many Grams Can You Buy at a Dispensary in Michigan?

Concentrate caps run 3.5 g to 8 g. Illinois and Massachusetts use 5 g. California uses 8 g. Edible caps are counted in milligrams of THC. Common figures are 500 mg in Massachusetts, Arizona, and Illinois, and 800 mg in Colorado and Nevada.

medical marijuana purchase limits per month

Per transaction is not per day

A 1 oz cap in Colorado means 1 oz in one sale. Two sales in one day are two transactions. Regulators watch the total you hold, not the total you buy. That total is the possession limit, and it sits above the purchase cap in every legal state.

Home possession is a separate number

Michigan allows a 2.5 oz purchase and 10 oz stored at home. Ohio uses the same 2.5 oz purchase figure with a 10 oz home cap. Missouri allows 3 oz to buy and 6 oz at home. Buy the transaction cap, store the possession cap. Do not mix the two.

Pitfalls

1. Two stores in one day. Each store reports its own sale. A traceability system can flag a combined total that passes the possession cap.
2. Residency. Illinois sells 30 g of flower to in-state IDs and 15 g to out-of-state IDs. Some states bar out-of-state medical sales.
3. Category math. A 1 oz flower cap is not 1 oz of concentrate. Concentrate caps are far lower, often 5 g.
4. Delivery. Delivery orders count against the same cap. A driver cannot split one order to beat the limit.
5. State lines. Federal law bans transport across state lines. Possession caps differ on each side of a border.

Before you buy

Ask the budtender for the store policy. Some chains set a lower cap than the state. Bring a government ID. Recreational sales require age 21 or older. Medical patients with a valid card may see different numbers in the same store.

Cannabis stays Schedule I under federal law. No federal purchase limit exists because no legal federal market exists.