State-Level CBD Laws, Bans, and THC Limits

State CBD laws and THC limits sit on top of a federal baseline that permits hemp-derived CBD containing no more than 0.3 percent Delta-9 THC on a dry weight basis.¹ That federal rule is a floor, not a ceiling. States add their own THC measurement methods, product bans, age thresholds, labeling mandates, and in a few cases near-total prohibitions. A product you can buy at a gas station in one state can get you arrested in the next. And a major federal redefinition taking effect November 12, 2026 will narrow what counts as legal hemp across the country, pulling many products currently on shelves out of the legal market.

How States Measure THC

The federal 0.3 percent limit currently applies only to Delta-9 THC. Several states already measure “total THC” instead, combining Delta-9 with THCA. THCA converts to active THC when heated, so regulators using total THC view it as the more honest measure of what a product can do. A tincture testing at 0.2 percent Delta-9 but 0.5 percent total THC can be federally legal and simultaneously illegal under state law.

Idaho sits at the extreme end. The state requires all manufactured hemp products to contain zero percent THC. Not trace amounts, not below detectable limits — zero.² Under Idaho’s controlled substance statute, possessing a cannabis extract containing THC is a misdemeanor for three ounces or less, punishable by up to one year in jail and a fine of up to $1,000. More than three ounces is a felony carrying up to five years and a $10,000 fine.³ A product that passes federal testing can land you in an Idaho jail.

If you ship or travel with CBD across state lines, you need to know two things about the destination: whether the state measures Delta-9 only or total THC, and what concentration triggers enforcement. “Federally compliant” is not an answer.

The November 12, 2026 Federal Redefinition

Section 781 of the Continuing Appropriations Act of 2026 (Pub. L. No. 119-37) rewrites the federal definition of hemp to measure total THC rather than Delta-9 alone.⁴ Total THC includes Delta-9, Delta-8, THCA, and every other THC isomer combined. If the total exceeds 0.3 percent on a dry weight basis, the product is no longer legal hemp under federal law.

The law also caps final hemp products at 0.4 milligrams of combined total THC — plus any cannabinoid with similar intoxicating effects — per container.⁴ That threshold is extremely low. Many full-spectrum CBD tinctures and edibles currently on shelves exceed 0.4 milligrams of total THC per bottle even when their Delta-9 content is well under 0.3 percent. After November 12, 2026, those products will be classified as marijuana, a Schedule I controlled substance, unless they are reformulated.

The amended definition also excludes cannabinoids that do not naturally occur in cannabis, and naturally occurring cannabinoids that were synthesized or manufactured outside the plant. That effectively removes commercially produced Delta-8 THC, THC-O, and HHC from the legal hemp market at the federal level, regardless of what any individual state allows beforehand.

State Restrictions on Product Types

States don’t only regulate THC concentration. Many restrict which types of CBD products can be sold at all.

Food and Beverages

The FDA has not approved CBD as a food additive or dietary supplement ingredient and considers it illegal to introduce CBD-containing food or beverages into interstate commerce.⁵ Despite the federal position, many states have built their own licensing frameworks that permit CBD food and beverage sales. New York requires any business selling cannabinoid hemp products — including foods and beverages — to hold a Cannabinoid Hemp Retail License from the Office of Cannabis Management.⁶ California allows hemp-derived food products through its Industrial Hemp Enrollment program but prohibits THC isolates and chemically synthesized cannabinoids like Delta-8 in any food product.⁷ A CBD gummy sold legally in one state can be an unapproved food additive in the next.

Smokable Hemp

Several states ban smokable hemp flower and pre-rolled hemp cigarettes regardless of THC content, usually because hemp flower is visually and olfactorily indistinguishable from marijuana. States with active or recent smokable hemp restrictions include Idaho, Kansas, and Hawaii. Texas finalized rules banning smokable hemp effective March 2026, though a Travis County court issued a temporary restraining order blocking enforcement in April 2026, leaving the legal status unsettled.

Pet Products

The FDA prohibits adding CBD or THC to animal food in interstate commerce and has not approved any CBD ingredient for pet food or treats.⁵ CBD pet products are widely sold in retail and online despite this, and the FDA has sent warning letters to companies making health claims about them. There is no federal quality assurance backing their safety or effectiveness.

Intoxicating Hemp Cannabinoids

An entire market of intoxicating hemp-derived compounds — Delta-8 THC, THC-O, HHC, high-THCA flower — emerged by exploiting the current Delta-9-only measurement. These compounds produce psychoactive effects but technically qualified as legal hemp because their Delta-9 THC content stayed below 0.3 percent. Roughly half the states have responded with age limits, serving-size caps, testing requirements, or outright bans. South Dakota’s 2026 Senate Bill 61 bans hemp products containing chemically derived cannabinoids and caps any product at 0.4 milligrams of combined THC per container; a violation is a Class 2 misdemeanor.⁸ California prohibits chemically synthesized cannabinoids including Delta-8, Delta-10, THC-O, and HHC in any food product regulated under state law.⁷ After November 12, 2026, the federal redefinition will make most of these derivatives illegal nationwide.

Age Requirements for Buying CBD

No federal law sets a minimum age for buying hemp-derived CBD. States fill that gap. Most states that have addressed the issue set the floor at 18. A smaller group — including Utah — requires buyers to be at least 21, bringing CBD into line with alcohol and tobacco. Some states split the rule by product type: Florida allows CBD purchases at 18 but restricts inhalable products like vapes to buyers 21 and older. Retailers in states with active hemp programs are generally required to check photo ID on every CBD transaction, and compliance stings using underage buyers are common. Penalties for selling to a minor fall on the business and can include license suspension or revocation plus escalating fines.

Packaging, Labeling, and Certificates of Analysis

Labeling is where compliance gets granular and where businesses most often trip up. Most states with active hemp programs require products to carry a scannable QR code or barcode linked to a Certificate of Analysis (COA) from an independent, accredited laboratory. Indiana’s packaging statute requires a scannable code linked to manufacturing information including a batch identification number.⁹ The COA typically must include the cannabinoid profile, contaminant testing for heavy metals and pesticides, batch number, testing dates, and lab methodology. Products missing this information are considered misbranded and subject to removal from shelves.

California’s label rules are among the most detailed. Labels must include a statement that the FDA has not evaluated the product for safety or efficacy, a warning that children and pregnant or breastfeeding individuals should consult a healthcare professional before use, and a notice to keep products out of reach of children.⁷ California also requires Proposition 65 warnings on cannabis and THC products that may expose consumers to chemicals on the state’s list of substances known to cause cancer or reproductive harm.¹⁰

Health claims are a separate federal risk layered on top of state labeling. The FDA treats marketing CBD products with therapeutic or medical claims as illegal and has issued warning letters to companies making unsupported claims.¹¹ Saying a CBD product treats anxiety, pain, or any medical condition can trigger federal enforcement regardless of state law.

Taking CBD Across State Lines

Federal regulations explicitly protect interstate transportation of hemp produced under an approved state, tribal, or USDA plan. The USDA’s domestic hemp production rule says no state or tribal government may prohibit the transportation or shipment of lawfully produced hemp through its territory.¹² In practice, that protection only works if you can prove on the spot that your product is lawful hemp. Carry lab results, a Certificate of Analysis, and, for businesses, the shipper’s hemp license. Without those, a traffic stop in a restrictive state can turn into a possession charge no matter what the law says in the state where you bought the product.

Shipping carriers add their own layer. The U.S. Postal Service allows domestic mailing of hemp products that meet the federal THC definition, but mailers must retain records including lab test results and licenses for at least two years, and hemp cannot be sent to international or military addresses.¹³ UPS requires a dedicated hemp account, licenses, a signed UPS agreement, and Adult Signature Required service, and it prohibits hemp vapes, synthetic cannabinoids, and shipments originating from locations that also sell marijuana.¹⁴ After November 12, 2026, products exceeding the new 0.4-milligram total THC cap per container will no longer qualify as hemp, and carriers will stop shipping them.

CBD and Workplace Drug Testing

Using a CBD product that’s legal in your state can still cost you your job. Standard workplace drug panels test for THC metabolites, and full-spectrum CBD products contain trace amounts of THC, sometimes more than the label claims. The Department of Transportation has stated plainly that CBD use is not a legitimate medical explanation for a positive marijuana test. If a DOT-regulated employee tests positive, the result stands regardless of whether the employee says they used only CBD.¹⁵

DOT’s rule covers truck drivers, pilots, school bus drivers, train engineers, transit operators, aircraft maintenance workers, and pipeline emergency personnel. The agency specifically notes that CBD product labels may be misleading and that the FDA does not certify THC levels in CBD products.¹⁵ Many private employers outside DOT-regulated industries maintain zero-tolerance drug policies that don’t distinguish between marijuana use and a positive triggered by CBD. If your job involves drug testing, the safest approach is to avoid full-spectrum CBD or switch to a CBD isolate with verified third-party testing showing non-detectable THC.

Checking the Current Rules Where You Are

The state landscape shifts frequently. States that once maintained near-total bans have adopted hemp programs aligning with federal standards; others have tightened. Before buying, traveling with, or shipping CBD into a given state, check that state’s current department of agriculture or health department guidance rather than a secondhand summary. Federal legality is not a defense to state prosecution, and the gap between the two is where consumers and businesses get caught.

1
Office of the Law Revision Counsel. 7 USC 1639o – Definitions
2
Idaho State Department of Agriculture. Hemp Frequently Asked Questions
3
Idaho State Legislature. Idaho Code 37-2732 – Prohibited Acts
4
Congressional Research Service. Changes to the Federal Definition of Hemp: Legal Considerations
5
U.S. Food and Drug Administration. FDA Regulation of Cannabis and Cannabis-Derived Products, Including Cannabidiol (CBD)
6
Office of Cannabis Management. Cannabinoid Hemp Retailers and Distributors
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California Department of Public Health. Warning to CDPH Licensees Concerning Illegal Hemp Products
8
South Dakota Legislature. 2026 Senate Bill 61 – An Act to Ban Hemp-Derived Intoxicants Not for Medical Purposes
9
Indiana General Assembly. Indiana Code 24-4-21-4 – Packaging Requirements
10
Proposition 65 Warnings Website. Cannabis and THC Products
11
U.S. Food and Drug Administration. Warning Letters for Cannabis-Derived Products
12
eCFR. 7 CFR 990.63 – Interstate Transportation of Hemp
13
United States Postal Service. Domestic Shipping Prohibitions, Restrictions, and HAZMAT
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UPS. How to Ship Hemp and CBD
15
U.S. Department of Transportation. DOT CBD Notice