Agencies
Services
Electronically file your Withholding Income Tax and Unemployment Insurance Tax
MyTax Illinois is a free online application for electronically filing your Form IL-941 Illinois Withholding Tax Return and Form UI-3/40, Contribution and Wage Report. Follow the instructions on the MyTax Illinois screens and enter your tax information. MyTax Illinois will calculate your return or report and tell you whether or not you have a balance due or are overpaid. At the end of your successful filing, you will be given a confirmation number, which is your proof of filing.
- Click here to file your IL-941 return. (File one return each quarter.)
- Click here to file your UI-3/40 report.
Note: To make your semi-weekly or monthly payments of withholding tax or pay your unemployment insurance tax online, use MyTax Illinois.
What if I have a question about Unemployment Insurance Tax or the UI-3/40 report?
Illinois State Unemployment is administered by the Illinois Department of Employment Security. Contact them at 1-800-247-4984 or visit their website at ides.illinois.gov.