THCA Marketing Claims and Legal Questions

Laws change; this is not legal advice

THCA (tetrahydrocannabinolic acid) is the acid form found in raw cannabis; the chemistry is explained on THCA and in decarboxylation explained. This page covers only how United States federal law, as read on 2026-10-22, counts THCA, and what a seller's wording does and does not show. We did not read state laws for THCA products, so we state no rule for any state.

The 2018 test

The 2018 Farm Bill defined hemp based only on the concentration of delta-9 THC. [1] The FDA quotes the definition as a delta-9 tetrahydrocannabinol concentration of not more than 0.3 percent on a dry weight basis. [2] The sources we read do not discuss THCA specifically under the 2018 wording, so we make no claim about how that earlier test applied to THCA-rich products. Sellers who advertised a "loophole" were making an argument, not stating settled law; CRS says that the delta-9-only test led some to view it as a loophole, and that courts and the DEA disagreed on parts of it. [1]

The 2025 change: THCA counts

The amended definition, scheduled for November 12, 2026, uses a total THC concentration, including THCA, of not more than 0.3 percent on a dry weight basis. [3] CRS also lists that viable seeds from a cannabis plant exceeding total THC (including THCA) of 0.3% are excluded, and that intermediate products with more than 0.3% total THC and similar cannabinoids are excluded. [1] Final consumer products would also face the per-container limit of 0.4 milligrams of total THC and similar cannabinoids. [3]

In short, once that definition takes effect, a product's THCA is counted along with its THC. Products excluded from hemp would be regulated as marijuana under the Controlled Substances Act. [3] Timing is uncertain: CRS reported a Senate-passed measure that would delay most of the definition until December 11, 2026. [3] We did not verify the outcome.

Reading THCA marketing

• "Hemp-derived" or "Farm Bill compliant." These are claims, not legal findings. The FDA warns that "hemp" labels may mislead people about whether a product is psychoactive (said of delta-8 products). [4]
• "Non-intoxicating" or "THC-free." Ask what the certificate of analysis (COA) reports for THC and THCA separately and as a total; a "no THC" headline can hide a large THCA number. See THC vs THCA on a label and total THC and total CBD.
• Lab numbers. A COA is one batch result, not proof of legality; see how to read a cannabis COA.
• Online sale or shipping. These are not legal tests. The FDA treats cannabis-derived products like any other FDA-regulated product regardless of hemp status. [2]

Other places

We did not read the THCA rules of any other country. See cannabis and CBD laws by country.