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Scam Alert: Fake Texts and Websites Impersonating IDOR

Be alert for fraudulent messages or websites attempting to steal your banking information, login credentials, or credit card details. The Illinois Department of Revenue (IDOR) will never request personal or financial information via text message. To confirm official communications or contact details, always visit https://tax.illinois.gov.

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2025 Withholding (Payroll) Tax Forms

Click here to file your IL-941 return or pay your IL-501 in MyTax Illinois
Click here for information about filing your W-2s and 1099s

Form
 Instructions Description
IL-501   Payment Coupon and Instructions - Due Dates
IL-941 PDF  | HTML Illinois Withholding Income Tax Return - Due Dates
​IL-941-X
 PDF | HTML ​Amended Illinois Withholding Income Tax Return
​Schedule WC
 PDF  | HTML ​Withholding Income Tax Credits
​Schedule WC-I
  PDF | HTML ​Withholding Income Tax Credits Information

IL-700-T

   Illinois Withholding Tax Tables Booklet - effective January 1, 2025 - December 31, 2025
IL-5754   Statement by Person Receiving Gambling Winnings
IL-W-4
   Employee's Illinois Withholding Allowance Certificate
IL-W-5   Certificate of Residence in Illinois
IL-W-5-NR   Employee's Statement of Nonresidence in Illinois
IL-W-6
   Certificate of Days Worked in Illinois for Non-Residents
IL-W-6-WS
   Worksheet to Report Days Worked in Illinois for Non-Residents

Pub 131-D

 HTML 2025 Withholding Income Tax Payment and Return Due Dates