IL-8633-B, Business Electronic Filing Enrollment

Who must complete Form IL-8633-B?

You must complete Form IL-8633-B if you are a software developer, transmitter, or participant using third party software to file returns and payments.

Note: Participants using our free MyTax Illinois program should not complete Form IL-8633-B unless they plan to use the Illinois Electronic Filing Program in addition to the MyTax Illinois Program.