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Substitute Forms Developers

Creating your own version of Illinois Department of Revenue tax forms?

  • 2023 Guidelines for Substitute Tax Forms (Form IL-8633-SF)- Technical specifications, enrollment form, and testing requirements. New Guidelines and Enrollment for 2023 tax year is now available.
  • Draft Forms (This page will be available on September 15, 2023) - Enrollment as a substitute forms developer is required. See the Guidelines for Substitute Tax Forms for more information on how to access this page.

NOTE: If your substitute forms print from electronic filing software you develop, you must separately enroll and test your software. See Electronic Transmitters/Software Developers.