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Possible online services disruption due to Internet related outage

A worldwide technology outage is causing disruption to some State of Illinois online systems.  We are aware of this issue and are diligently working on restoration.

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Do I have to register with Illinois to file IL-1040 tax returns electronically through the Modernized e-File (MeF) program?

Electronic Return Originators (EROs), Authorized IRS e-file Providers, and Transmitter businesses are not required to submit a separate Illinois enrollment application for authorization to file Illinois Individual Income Tax returns electronically through the MeF program. E-file providers approved in the IRS Electronic Filing Program are automatically enrolled in the Illinois program.

If you have additional inquiries, you may submit them on the Questions, Comments, or Requests form.