Short answer: As of Nov. 1, 2026, every licensed cannabis product label in Illinois must show a single Total THC figure, worked out as THC plus THCA times 0.877. Labels must also list other cannabinoids above set levels and say when a product contains hemp, under rule changes from the Illinois Department of Agriculture.
- Label deadline for licensed businesses: Nov. 1, 2026 (IDOA bulletin)
- Formula: Total THC = THC + (THCA x 0.877)
- Other cannabinoids listed when above 0.3% by weight or above 0.4 mg
- Hemp inputs must be disclosed on the label
- October 2026 state alert separates bundles from variety packs (CA-2026-10)
What changed on the label, and when?
The Illinois Department of Agriculture regulates how licensed cannabis products are labeled. Its Spring 2026 rule update bulletin says the General Assembly’s Joint Committee on Administrative Rules signed off on the new rules on April 14, 2026, and that licensees were given until Nov. 1, 2026, to change their labels. So any package you pick up from a licensed Illinois shelf this month should carry the new fields.
The bulletin lists three additions:
- One Total THC number. Instead of making you do the math from separate THC and THCA lines, the label gives the combined figure.
- A wider cannabinoid list. THC, THCA, CBD and CBDA were already required. Now any other cannabinoid shown on the product’s lab report at more than 0.3% by weight, or more than 0.4 mg, must be listed too.
- A hemp disclosure. If hemp went into the product, the label has to say so, either in the ingredients (the state’s example is “Hemp-derived CBD isolate”) or in a line such as “This product contains Hemp.”
How is Total THC calculated?
The adopted rule, printed with the bulletin, defines Total THC as THC + (THCA x 0.877). The department says the state-licensed testing lab should run that calculation on the product’s Certificate of Analysis (COA), the lab report that backs up the numbers on the package. The same rule text allows infused products, like edibles, to show Total THC and other cannabinoids in milligrams.
The state’s consumer page, Understanding Labels, walks through each field if you want to compare a label line by line.
Is this the same as the Nov. 12 hemp limit?
No, and the two are easy to mix up. The label rule covers products made by licensed cannabis businesses. The separate Illinois Hemp Act, which takes effect Nov. 12, 2026, uses its own “total THC” count, adding up delta-9, delta-8, THCa, THC-O, HHC and THC-P, to decide whether a product sold as hemp crosses 0.4 mg per container and becomes cannabis, according to the Department of Agriculture’s Hemp Act notice. We covered that change in our Nov. 12 hemp post.
What’s the difference between a bundle and a variety pack?
The department’s October 2026 compliance alert says it was written to help avoid misleading labels, and it draws a clear line:
- A bundle (sometimes called a flight) is a group of separate products sold together. Each one is registered, labeled and lab-tested on its own with its own COA, and any outer wrap should not hide the individual labels or warnings.
- A variety pack (sometimes called a multi-pack) holds different varieties of one product in a single package, kept visibly separate. The pack is registered and labeled as one product, the contents are listed on the outside, and each variety is tested before the pack is put together. The potency for each variety must appear on the single label.
The alert also says a variety pack can’t mix product types or dose sizes, and it must stay within the state’s per-package THC limit. Where a business uses the tracking system’s Retail ID feature, scanning the QR code on a multi-pack label brings up the lab results for each item inside.
Where can I ask about a label?
The bulletin gives AGR.CannabisProdRegs@illinois.gov as the contact for labeling questions, and new guidance is posted on the state’s compliance alerts page. In the store, any budtender can show you where each field sits on a package.
Sources: Illinois Department of Agriculture, Informational Bulletin: Spring 2026 Rule Updates (with adopted amendments to 8 Ill. Adm. Code 1300); IDOA Compliance Alert CA-2026-10, Product Bundles and Variety Packs (October 2026); IDOA, Understanding Labels; IDOA, Illinois Hemp Act Update; State of Illinois, Agriculture Compliance Alerts. Accessed Nov. 3, 2026. News and education only, not legal or medical advice.
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