How much cannabis can I sell one customer?
Written from primary sources and checked against them. As of October 20, 2026. How that is done.
Short answer
How much cannabis can I sell one customer?
There is no national purchase limit. Every state sets its own, and inside a state the ceiling moves with the customer's class, the window it is measured over and the product category, so one number is never the whole answer.
Bloom has published 29 limits across 11 states: Arizona, California, Colorado, Illinois, Maryland, Michigan, Missouri, Nevada, New York, Oregon and Washington. They are all below, each rendered from the corpus with the citation it came from and the day the source was read, so you can check any of them against the state's own text rather than take ours.
A limit is four facts, not one number
Ask most people in cannabis retail what the limit is and you get a weight. Ask the rules and you get four separate things, each of which can make an otherwise lawful basket unlawful, and each of which the published states genuinely disagree about.
Who the customer is. Adult use, non resident, patient, caregiver and minor patient are all distinct classes in the corpus, because they are distinct rules with distinct ceilings that change independently of each other.
What window it runs over. A per transaction cap and a daily cap are different rules, and a rolling window of thirty days is a third thing again, because it never resets. A customer at the ceiling of a rolling window is at the ceiling tomorrow too.
Where it is counted. A limit enforced at your till is a different obligation from one enforced across every shop in the state, and the second one means somebody else holds the running total.
Whether categories add up. Independent ceilings, a single flower equivalent, and an overall cap with a smaller one nested inside it are three different arithmetics. All three are in the published corpus.
Windows in the published limits
- one day
- 8
- any rolling 30 days
- 6
- one transaction
- 5
- one day
- 4
- one transaction
- 4
- one calendar month
- 1
- any rolling 14 days
- 1
Customer classes
- Patient
- 9
- Adult
- 7
- Caregiver
- 7
- Non Resident
- 4
- Minor Patient
- 2
Where the count is kept
- counted by this shop only
- 18
- counted across the state through a patient registry
- 6
- counted across the state through the tracking system
- 5
How categories aggregate
- each category has its own ceiling
- 22
- categories convert into a single flower equivalent
- 6
- one overall ceiling with a smaller cap inside it
- 1
Every published limit
13 of 52 jurisdictions published. A jurisdiction appears only after its rules have been read against its own statute and administrative code.
Arizona · Adult · Adult Use
Measured over one transaction, counted by this shop only, and one overall ceiling with a smaller cap inside it.
- extracts and concentrates
- 5g
- all cannabis together
- 28.35g
read September 6, 2026 · confidence 95
California · Adult · Adult Use
Measured over one day, counted by this shop only, and each category has its own ceiling.
- extracts and concentrates
- 8g
- usable marijuana
- 28.5g
- immature plants
- 6
read October 19, 2026 · confidence 95
California · Non Resident · Adult Use
Measured over one day, counted by this shop only, and each category has its own ceiling.
- extracts and concentrates
- 8g
- usable marijuana
- 28.5g
- immature plants
- 6
read September 6, 2026 · confidence 90
California · Caregiver · Medical
Measured over one day, counted by this shop only, and each category has its own ceiling.
- usable marijuana
- 226.8g
- immature plants
- 12
read September 6, 2026 · confidence 88
Colorado · Adult · Adult Use
Measured over one transaction, counted by this shop only, and categories convert into a single flower equivalent.
- extracts and concentrates
- 8g
- edible THC
- 800mg
- usable marijuana
- 28.35g
- seeds
- 6
read September 6, 2026 · confidence 95
Colorado · Patient · Medical
Measured over one day, counted across the state through a patient registry, and each category has its own ceiling.
- usable marijuana
- 56.7g
- mature plants
- 3
- plants of any maturity
- 6
read September 6, 2026 · confidence 95
Illinois · Non Resident · Adult Use
Measured over one transaction, counted by this shop only, and each category has its own ceiling.
- extracts and concentrates
- 5g
- edible THC
- 500mg
- usable marijuana
- 30g
read September 6, 2026 · confidence 95
Illinois · Caregiver · Medical
Measured over any rolling 14 days, counted across the state through a patient registry, and each category has its own ceiling.
- usable marijuana
- 70.87g
read September 6, 2026 · confidence 90
Maryland · Patient · Medical
Measured over any rolling 30 days, counted across the state through a patient registry, and each category has its own ceiling.
The rule sets a limit that is not published here as a numeric cap. The citation below is the text that sets it.
Md. Code, Alcoholic Beverages and Cannabis Art. 36-302(g) (a qualifying patient may not possess more than the amount authorized in the written certification); 36-101(kk)(3) (a written certification may certify that a 30-day supply would be inadequate); COMAR 14.17.12.04A(2)(c) and A(4)(a), (b)read September 6, 2026 · confidence 80
Maryland · Caregiver · Medical
Measured over any rolling 30 days, counted across the state through a patient registry, and each category has its own ceiling.
The rule sets a limit that is not published here as a numeric cap. The citation below is the text that sets it.
Md. Code, Alcoholic Beverages and Cannabis Art. 36-302(d) (a caregiver may serve not more than five qualifying patients at any time) and 36-302(e); COMAR 14.17.12.04A(1) and (2); COMAR 14.17.04.02C and Dread September 6, 2026 · confidence 80
Maryland · Minor Patient · Medical
Measured over any rolling 30 days, counted across the state through a patient registry, and each category has its own ceiling.
The rule sets a limit that is not published here as a numeric cap. The citation below is the text that sets it.
Md. Code, Alcoholic Beverages and Cannabis Art. 36-302(c) (a qualifying patient under 18 may obtain medical cannabis only through the patient's caregiver or authorized school personnel); 36-1101(a)(2)(ii) (the patient or caregiver at the counter must be at least 18); 36-101(l)(1)(ii) (a minor patient's caregivers are a parent or legal guardian plus up to two additional designated adults)read September 6, 2026 · confidence 88
Michigan · Patient · Medical
Measured over one day, counted across the state through the tracking system, and categories convert into a single flower equivalent.
- usable marijuana
- 70.87g
read September 6, 2026 · confidence 92
Michigan · Caregiver · Medical
Measured over one day, counted across the state through the tracking system, and categories convert into a single flower equivalent.
- usable marijuana
- 70.87g
read September 6, 2026 · confidence 92
Missouri · Patient · Medical
Measured over any rolling 30 days, counted across the state through the tracking system, and categories convert into a single flower equivalent.
- extracts and concentrates
- 48g
- edible THC
- 4800mg
- usable marijuana
- 170.1g
read September 6, 2026 · confidence 95
Missouri · Caregiver · Medical
Measured over any rolling 30 days, counted across the state through the tracking system, and categories convert into a single flower equivalent.
- extracts and concentrates
- 48g
- edible THC
- 4800mg
- usable marijuana
- 170.1g
read September 6, 2026 · confidence 92
Missouri · Minor Patient · Medical
Measured over any rolling 30 days, counted across the state through the tracking system, and categories convert into a single flower equivalent.
- extracts and concentrates
- 48g
- edible THC
- 4800mg
- usable marijuana
- 170.1g
read September 6, 2026 · confidence 88
Nevada · Adult · Adult Use
Measured over one transaction, counted by this shop only, and each category has its own ceiling.
- extracts and concentrates
- 3.54g
- edible THC
- 3543mg
- usable marijuana
- 28.35g
- total THC
- 3543
read September 6, 2026 · confidence 95
Nevada · Patient · Medical
Measured over one day, counted by this shop only, and each category has its own ceiling.
- plants of any maturity
- 12
- edible THC
- 10000mg
- usable marijuana
- 70.875g
- total THC
- 10000
read September 6, 2026 · confidence 90
Nevada · Adult · Adult Use
Measured over one day, counted by this shop only, and each category has its own ceiling.
- plants of any maturity
- 6
- extracts and concentrates
- 7.09g
- usable marijuana
- 70.875g
- total THC
- 3543
read September 6, 2026 · confidence 85
New York · Non Resident · Adult Use
Measured over one transaction, counted by this shop only, and each category has its own ceiling.
- extracts and concentrates
- 24g
- usable marijuana
- 85.05g
read September 6, 2026 · confidence 88
Oregon · Adult · Adult Use
Measured over one day, counted by this shop only, and each category has its own ceiling.
- extracts and concentrates
- 10g
- usable marijuana
- 56.7g
- immature plants
- 4
- inhalable cannabinoid products
- 10g
- liquid cannabinoid products
- 2129.3ml
- seeds
- 10
- solid cannabinoid products
- 453.6g
read October 19, 2026 · confidence 95
Oregon · Patient · Medical
Measured over one day, counted by this shop only, and each category has its own ceiling.
- extracts and concentrates
- 10g
- usable marijuana
- 226.8g
- immature plants
- 4
- inhalable cannabinoid products
- 10g
- liquid cannabinoid products
- 2129.3ml
- seeds
- 10
- solid cannabinoid products
- 453.6g
read September 6, 2026 · confidence 85
Oregon · Patient · Medical
Measured over one calendar month, counted by this shop only, and each category has its own ceiling.
- usable marijuana
- 907.2g
read October 19, 2026 · confidence 80
Oregon · Caregiver · Medical
Measured over one day, counted by this shop only, and each category has its own ceiling.
- extracts and concentrates
- 10g
- usable marijuana
- 226.8g
- immature plants
- 4
- inhalable cannabinoid products
- 10g
- liquid cannabinoid products
- 2129.3ml
- seeds
- 10
- solid cannabinoid products
- 453.6g
read September 6, 2026 · confidence 85
Oregon · Patient · Medical
Measured over one day, counted across the state through a patient registry, and each category has its own ceiling.
- usable marijuana
- 680.4g
- immature plants
- 12
- mature plants
- 6
read October 19, 2026 · confidence 85
Washington · Adult · Adult Use
Measured over one transaction, counted by this shop only, and each category has its own ceiling.
- extracts and concentrates
- 7g
- liquid edibles
- 2129.2941285ml
- solid edibles
- 453.59237g
- usable marijuana
- 28.349523125g
- liquid THC, where a unit is 4mg or less
- 200
- other ingestible units
- 10
read October 20, 2026 · confidence 95
Washington · Non Resident · Adult Use
Measured over one transaction, counted by this shop only, and each category has its own ceiling.
- extracts and concentrates
- 7g
- liquid edibles
- 2129.2941285ml
- solid edibles
- 453.59237g
- usable marijuana
- 28.349523125g
- liquid THC, where a unit is 4mg or less
- 200
- other ingestible units
- 10
read October 20, 2026 · confidence 90
Washington · Patient · Medical
Measured over one transaction, counted by this shop only, and each category has its own ceiling.
- extracts and concentrates
- 21g
- liquid edibles
- 6387.8823855ml
- solid edibles
- 1360.77711g
- usable marijuana
- 85.048569375g
- liquid THC, where a unit is 4mg or less
- 200
read October 20, 2026 · confidence 95
Washington · Caregiver · Medical
Measured over one transaction, counted by this shop only, and each category has its own ceiling.
- extracts and concentrates
- 21g
- liquid edibles
- 6387.8823855ml
- solid edibles
- 1360.77711g
- usable marijuana
- 85.048569375g
- liquid THC, where a unit is 4mg or less
- 200
read October 20, 2026 · confidence 92
Each citation is a link to the state's own published text. Following one and checking whether it says what we say it says is a better test of this data than anything written on this page.
Per store is not per person
18 of the 29 published limits are counted by the shop alone. The rest are counted across the state, through a patient registry or through the state's tracking system. That single field decides what a register is even capable of doing, and it is the point at which vendor language most often overclaims.
Where the scope is the shop, your system can count what your shop sold and nothing else. It does not know what the shop two blocks away sold the same customer an hour ago, and no amount of software makes it know. A vendor claiming to prevent a customer exceeding a statewide ceiling, in a state where the rule is enforced per store, is describing something that cannot be done.
Where the scope is statewide, the opposite risk applies. The running total lives in a registry or a tracking system that your register queries, which means the answer can be stale, the service can be unavailable, and the shop still has to decide what to do when it is. That is a design question with a right answer and a wrong one, and the wrong one is completing the sale and reconciling later.
So the honest question to any vendor is not whether it enforces limits. It is which scope it enforces them at, in your state, and what it does when the system holding the total does not answer.
Three different arithmetics, all of them published
The aggregation basis is the field that produces the most expensive mistakes, because getting it wrong is invisible until somebody audits a basket. The published states use three different systems and there is no defensible way to average them.
Independent categories. Each product category carries its own ceiling and reaching one does not reduce another, each measured in its own unit: grams here, millilitres there, milligrams of THC somewhere else, a plain count of units for the rest. The widest published rule of this kind carries 7 separate ceilings.
Flower equivalent. Some states do exactly the thing that is wrong in the first case: they convert every category into an equivalent weight of flower and apply one number. In those states the conversion is the rule, and a system enforcing independent ceilings will let a basket through that the state counts as over.
Nested subcap. One overall ceiling with a tighter cap on a specific category inside it, so a basket can be under the total and still over the limit on concentrate.
The point of putting this in a field rather than in code is that all three are correct somewhere. A register that hardcodes any one of them is right in some states and wrong in others, and it will not tell you which.
Medical is a different customer, and often a different clock
Where a state runs a medical programme alongside adult use, the same shop is applying two sets of ceilings on the same afternoon, decided by a card rather than by the product. The medical rows are frequently the ones on a rolling window and the ones counted statewide, which means they are also the rows where a register is most dependent on somebody else's system.
A card has to be current at the moment of the sale rather than at the moment it was first scanned, and the verification is itself a record the state can ask for later. The same card often decides a tax exemption as well, which is covered in how cannabis retail tax is calculated, and the check itself is one of the rules on what point of sale software has to do.
What any register has to do about this
None of the following is specific to Bloom. It is what the published rules require of whatever system stands between a basket and a receipt, and it is a fair list to hold any vendor to.
Count in the unit the rule uses, not in dollars or line items. Apply the aggregation basis the state actually uses rather than the one the software was built around. Run the window the rule names, in the shop's own timezone, which the corpus records for each jurisdiction because a limit that resets at midnight resets at a different moment in Portland than in Boston. Apply the customer's class rather than the product's. Refuse where the rule says a retailer may not sell, instead of warning and letting somebody click through.
Then record the check. Six months later the useful question is not whether the sale was under the limit, it is whether you can show which limit was applied, at which scope, on which basis, and which version of the rule that limit came from. A count that leaves no trace is indistinguishable from no count at all.
Where this page stops
Questions people ask next
- Is a purchase limit per visit or per day?
- Both exist, and which one you are under is a published field rather than an assumption. Some states cap a single transaction, some cap a day, some run a rolling window of two weeks or a month, and at least one runs a calendar month alongside a daily cap. A register that resets its count when the customer leaves the shop is enforcing a rule nobody wrote unless the rule is per transaction, in which case it is right by accident.
- Does my point of sale know what another shop sold the same customer today?
- It depends on the scope the rule is enforced at, which the corpus records on every limit. Where the scope is per store, a register can only count what it sold. Where the rule is enforced across the state, the counting is done by a patient registry or by the state's tracking system, and the register is querying somebody else's total. Those are different pieces of software and different failure modes, and a vendor claim should say which one it means.
- Do flower and concentrate count against the same ceiling?
- That is the aggregation basis, and the published states do not agree. Most give each category its own independent ceiling. Some convert everything into a flower equivalent and apply one number. At least one sets an overall ceiling with a smaller cap on concentrate nested inside it. Applying the wrong one of those three both blocks lawful baskets and completes unlawful ones, which is why it is a field rather than a convention.
- Is a registered patient allowed to buy more than an adult customer?
- Usually, and sometimes on a different clock and a different scope as well. The corpus holds separate rows for adult, non resident, patient, caregiver and minor patient customers, because they are separate rules that change independently. The figures, the class each applies to, and the citation behind each are on this page and on each state's own page.
- What should happen at the register when a basket goes over the limit?
- The published rules record an outcome as well as a trigger, and where the outcome is block the sale is prohibited rather than discouraged. A warning that a cashier can dismiss is not enforcement of a rule that says a retailer may not sell that quantity, and the record afterwards will not show that anyone decided anything.
- Which states has Bloom verified limits for?
- The ones listed on this page, and no others. The count is rendered from the published corpus rather than typed into the page, so it goes up on its own as states are finished. A state that has not been read end to end against its own statute and administrative code does not appear here at all.
Sources
- A.R.S. 36-2858(A)(1)(c) (a marijuana establishment may not sell more than one ounce of marijuana to a consumer in a single transaction, not more than five grams of whi... arizona official sourceread September 6, 2026
- Cal. Code Regs. tit. 4, sec. 15409(a)(1) to (3); Health and Safety Code sec. 11362.1(a)(1) and (2) and 2 further citations california official sourceread October 19, 2026
- 1 CCR 212-3, Rule 6-110(C)(1) and (C)(2) colorado official sourceread September 6, 2026
- Colo. Const. art. XVIII, sec. 14(4)(a)(I) and (II) colorado official sourceread September 6, 2026
- 410 ILCS 705/10-10(b)(1) to (3) (a person 21 or older who is not a resident of this State: 30 grams of cannabis flower, 5 grams of cannabis concentrate, 500 milligrams... illinois official sourceread September 6, 2026
- 410 ILCS 130/130(h) (adequate medical supply to a registered qualifying patient, directly or via a designated caregiver, in any 14-day period); 410 ILCS 130/25(b) (the... illinois official sourceread September 6, 2026
- Md. Code, Alcoholic Beverages and Cannabis Art. 36-302(g) (a qualifying patient may not possess more than the amount authorized in the written certification); 36-101(k... maryland official sourceread September 6, 2026
- Md. Code, Alcoholic Beverages and Cannabis Art. 36-302(d) (a caregiver may serve not more than five qualifying patients at any time) and 36-302(e);... and 1 further citation maryland official sourceread September 6, 2026
- R 420.506(1)(a); MCL 333.26424(a) and (c); R 420.111(4)(c) and 1 further citation michigan official sourceread September 6, 2026
- 19 CSR 100-1.040(4)(B)1 (absent a certification authorizing more, qualifying patients may only purchase, or have purchased on their behalf by their... and 2 further citations missouri official sourceread September 6, 2026
- NAC 678B.309 (Cannabis Compliance Bd., 7.025, eff. 8-5-2020) and 1 further citation nevada official sourceread September 6, 2026
- NRS 678D.200(3)(d)(1) to (4) and (3)(e) (as amended by 2023 Statutes of Nevada, page 2570) nevada official sourceread September 6, 2026
- Penal Law s.222.05(1)(a); 9 NYCRR 123.10(g)(11)(i) new-york official sourceread September 6, 2026
- OAR 845-025-2800(4)(a)(A) to (G) and 3 further citations oregon official sourceread October 19, 2026
- OAR 333-008-0080(1) (possession, not purchase: up to six mature marijuana plants, 12 immature marijuana plants, and 24 ounces of usable marijuana jointly with caregive... oregon official sourceread October 19, 2026
- WAC 314-55-095(1)(d); RCW 69.50.360 and 2 further citations washington official sourceread October 20, 2026
- RCW 69.50.360; WAC 314-55-095(1)(d) washington official sourceread October 20, 2026