Am I required to file my IL-941 electronically?

Yes. Public Act 100-303 provided new electronic filing requirements for Illinois withholding income tax. Effective January 1, 2018, Form IL-941 is required to be filed electronically. If you are unable to file electronically, you may request a waiver by submitting a Waiver Request form, IL-900-EW. You may contact our Taxpayer Assistance Division at 1 800 732-8866 or 217 782-3336 to request an IL-900-EW. 

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If you have additional inquiries, you may submit them to the Questions, Comments, or Request form.