Illinois Flag - We have tax reminders for IL

Illinois Sales and Use Tax and E911 Surcharge Return (ST-1)

  1. Home
  2. Illinois
  3. Sales and Use Tax and E911 Surcharge Return

IL ST-1 Information

You must file Form ST-1, Sales and Use Tax and E911 Surcharge Return, if you are making retail sales of any of the following in Illinois: • general merchandise, • qualifying foods, drugs, and medical appliances, and/or • prepaid wireless telecommunications service. General merchandise” includes sales of most tangible personal property including sales of • soft drinks and candy; • prepared food such as food purchased at a restaurant; • photo processing (getting pictures developed); • prewritten and “canned” computer software; • prepaid telephone calling cards and other prepaid telephone calling arrangements; • repair parts and other items transferred or sold in conjunction with providing a service under certain circumstances based on the actual selling price; and • grooming and hygiene products.

Link to official form info:

Link to official form info for ST-1

Tax Reminder works year round to keep official tax form info up-to-date for Illinois and the rest of the USA. The IRS and states change their forms often, so we do the hard work for you of figuring out where the official form info is located.

To access the official link to form IL ST-1 and get reminded when it's due, sign up for a free Tax Reminder account:

  • Upcoming Due Dates in the Next Year:*
  • Monday Nov 30, 2026
  • Thursday Dec 31, 2026
  • Monday Feb 01, 2027
  • Monday Mar 01, 2027
  • Wednesday Mar 31, 2027
  • Friday Apr 30, 2027
  • Monday May 31, 2027
  • Wednesday Jun 30, 2027
  • Monday Aug 02, 2027
  • Tuesday Aug 31, 2027
  • Thursday Sep 30, 2027
  • Monday Nov 01, 2027

  • Create a free account to see exactly when to file this form, receive email or SMS notification reminders, and to keep a record of filing it in your history.
    * Due dates are based on the filing requirements for this form and may vary depending on your tax year.

Never forget to file IL ST-1 again.

10 Illinois Tax Filings & Forms:

IL-1040 - Individual Income Tax Return IL 1040/Sch.NR - Nonresident and Part-Year Resident Computation of Illinois Tax IL-1120 - Corporation Income and Replacement Tax Return IL-1120-ST - Small Business Corporation Replacement Tax Return IL-1065 - Partnership Replacement Tax Return IL-941 - Withholding Income Tax Return IL-501 - Department of Revenue Payment Coupon IU-3/40 - Employer's Contribution and Wage Report IL-941 - Withholding Income Tax Return ST-1 - Sales and Use Tax and E911 Surcharge Return
Are we missing a Illinois tax form?

If we're missing the form you need, help us help you! Suggest a form we should include!