H.R. 5371 and THCA: What the 2026 Hemp Law Change Means

What H.R. 5371 actually says

H.R. 5371, formally titled the Hemp and Hemp-Derived CBD Consumer Protection and Market Stabilization Act of 2025, was signed into law on November 12, 2025. The law amends the Agricultural Marketing Act of 1946 — the same statute the 2018 Farm Bill used to define hemp — and takes effect one year after signing: November 12, 2026.

The most consequential change is how hemp is now defined. The 2018 Farm Bill defined hemp as cannabis with "not more than 0.3 percent delta-9 tetrahydrocannabinol." H.R. 5371 changes this to a total THC standard: delta-9 THC plus THCA multiplied by 0.877. Under this formula, a hemp product with 20% THCA yields a total THC of approximately 17.5% — far over any compliance threshold regardless of its delta-9 THC content.

H.R. 5371 also adds an absolute potency cap: no more than 0.4 milligrams of THC per serving in any hemp product. This is not a percentage — it is an absolute mass limit. A standard THCA gummy contains 5mg to 25mg of THCA per serving. A single pre-roll contains hundreds of milligrams. Nothing in the current hemp THCA market comes close to satisfying this cap.

Why this ends the hemp THCA market

The current hemp THCA market exists because of a gap in the 2018 Farm Bill. The Farm Bill measured hemp compliance using only delta-9 THC content in raw, unheated plant material. THCA is the non-decarboxylated precursor to delta-9 THC — chemically distinct, non-psychoactive in raw form. Vendors argued that products testing under 0.3% delta-9 THC were compliant hemp regardless of THCA content.

That argument was always contested by the DEA, which argued total THC should govern hemp classification, and by multiple states that adopted total THC testing on their own. H.R. 5371 settles the dispute at the federal level: total THC governs, and THCA counts.

The 0.4mg cap compounds the impact. Even products engineered to meet the new total THC percentage threshold — by processing out most THCA — would need to contain less than half a milligram of any THC per serving. That is a pharmacologically trace amount. No current hemp THCA product category — flower, vapes, gummies, tinctures, or concentrates at normal use levels — satisfies that limit.

How the impact varies by state

The November 2026 deadline does not affect all consumers equally. Whether you will have a compliant access pathway for THCA products after that date depends almost entirely on whether your state has adult-use cannabis legalization.

In states with mature adult-use cannabis markets — California, Colorado, Washington, Michigan, Nevada, Illinois, and others — licensed dispensaries already sell THCA products under state cannabis law. H.R. 5371 does not close these dispensaries. It removes the federal hemp defense for unlicensed sellers, strengthening state regulators' authority to clear the gray market. For consumers in these states, the practical change is the channel: hemp shop or online to licensed dispensary.

The significantly harder situation falls on consumers in states that were permissive for hemp THCA but have no adult-use cannabis program. Texas, Georgia, North Carolina, Tennessee, Indiana, Wisconsin, Nebraska, Wyoming, and others fall into this group. After November 12, 2026, the federal hemp channel closes — and no licensed cannabis alternative exists in these states. Consumers face a complete access gap unless their state legislature creates a licensed framework before the deadline.

See the full state-by-state breakdown at our THCA Legality by State guide — each state's entry includes a specific analysis of how H.R. 5371 applies.

The November 12, 2026 timeline and what happens before it

H.R. 5371 gives the hemp industry a one-year implementation window — November 12, 2025 through November 12, 2026. During this period, the existing federal hemp framework technically remains in place. Hemp retailers who were operating lawfully on the day H.R. 5371 was signed can continue to do so until the compliance deadline.

In practice, the market will shift well before November 12, 2026. Reputable retailers are already informing customers about the deadline and adjusting inventory. Banks and payment processors serving hemp businesses may tighten credit and services as the deadline approaches. Insurance and compliance programs will price in the transition risk. Expect the retail market to contract meaningfully in the months leading up to November 2026, not on the deadline date itself.

Online hemp THCA retailers shipping interstate will face the most immediate legal exposure after the deadline. Interstate shipment of marijuana — which most THCA products will become on November 12, 2026 — is a federal felony regardless of the destination state's cannabis laws.

What consumers should do before November 2026

If you are in a state with adult-use cannabis legalization, the practical action is to identify a licensed cannabis dispensary near you and begin purchasing there before the hemp transition. Dispensary pricing has dropped significantly in mature markets — the gap between hemp and dispensary pricing has narrowed considerably since 2021.

If you are in a state without adult-use cannabis, monitor your state legislature closely. Several states — including Virginia, which has adult-use sales expected to begin in 2025, and others — may have programs operational before November 2026. A licensed pathway may open in your state before the federal deadline.

Do not assume the deadline will be delayed or that the law will be repealed. H.R. 5371 passed with bipartisan support and reflects years of regulatory pressure from state attorneys general, law enforcement, and public health advocates. Plan as if November 12, 2026 is the firm end date — because it currently is.