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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.