2016 IL-941-X Amended Illinois Withholding Income Tax Return
The IL-941-X for 2017 is not available at this time. Please check back closer to the filing due date.
If you need to file the return that is due January 31st (4th quarter of 2016 for quarterly filers/2016 year for annual filers), you must use the 2016 IL-941-X (Right click and "save as" to download the PDF form) or file using MyTax Illinois.
Please note: To allow for your IL-941-X to be processed correctly, you must first type in your Federal ID number, your sequence number (if different than 000), and the reporting period before printing this document.
For future forms, order personalized, preprinted forms by calling the Taxpayer Assistance Division at 1 800 732-8866, 1 217 782-3336, or our TDD (telecommunications device for the deaf) at 1 800 544-5304.