Substitute Forms Developers

Form IL-2848, Power of Attorney, and instructions have been revised effective September 11, 2020. New Forms IL-2848-A, Power of Attorney Additional Information, and IL-2848-B, Power of Attorney Specific Authority Granted, have been created. Effective immediately - use Form IL-2848 with a revision date of R-08/20. Old versions of Form IL-2848 will not be accepted after March 1, 2021.

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

New! Guidelines for Substitute Tax Forms (Form IL-8633-SF)- Technical specifications, enrollment form, and testing requirements.
Draft Forms (Password protected area) - Enrollment as a substitute forms developer is required. See the Guidelines for Substitute Tax Forms for more information on how to access this page.
Illinois Public Account Maintenance

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.

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Substitute Forms Developers