Illinois Department of Revenue
Electronic Services

Electronic Filing Program for Sales & Other Related Tax Returns


The department has the ability to electronically receive and process the

  • ST-1, Sales and Use Tax and E911 Surcharge Return, and the ST-2, Multiple Site Form;
  • ST-4, Metropolitan Pier and Exposition Authority Food and Beverage Tax Return, and the ST-7, Multiple Site Form;
  • ST-8, Tire User Fee; and the
  • ST-14, Chicago Soft Drink Tax Return.

Participation in the Illinois Electronic Filing Program for sales and related tax returns is available to software developers, transmitters, Electronic Return Originators (EROs), and taxpayers. To enroll, complete Form IL-8633-B, Business Electronic Filing Enrollment. Note: Participants using our free MyTax Illinois program do not complete Form IL-8633-B.

To use this method of electronic filing, you can write your own software or buy software from an accepted electronic filer (third party). If you wish to create your own software for filing or create software to sell, please refer to the corresponding implementation guide below. Once we have received your IL-8633-B enrollment form, we will contact you regarding testing.

Form ST-1 electronic filing documentation (version ST1V2.0)

  • STS-81, Implementation Guide for Direct Electronic Filing of Sales and Use Tax
  • Error Codes

Form ST-4 electronic filing documentation (version ST4V1.0)

  • STS-82, Metropolitan Pier and Exposition Authority Food and Beverage (MPEA) Direct Electronic Filing Implementation Guide
  • Error Codes

Form ST-8 electronic filing documentation (version ST8V1.0)

Form ST-14 electronic filing documentation (version ST14V1.0)

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