35 ILCS 105/3a
The tax imposed by the Act shall when collected be stated as a distinct item separate and apart from the selling price of the tangible personal property. However, where it is not possible to state the sales tax separately in situations such as sales from vending machines or sales of liquor by the drink the Department may by rule exempt such sales from this requirement so long as purchasers are notified by a sign that the tax is included in the selling price.
In addition, retailers who sell items that would have been taxed at the 1% rate but for the 0% rate imposed under this amendatory Act of the 102nd General Assembly shall, to the extent feasible, include the following statement on any cash register tape, receipt, invoice, or sales ticket issued to customers: "From July 1, 2022 through July 1, 2023, the State of Illinois sales tax on groceries is 0%.". If it is not feasible for the retailer to include the statement on any cash register tape, receipt, invoice, or sales ticket issued to customers, then the retailer shall post the statement on a sign that is clearly visible to customers. The sign shall be no smaller than 4 inches by 8 inches.
35 ILCS 105/3a