2021 Withholding (Payroll) Tax Forms

Click here to file your IL-941 return or pay your IL-501 in MyTax Illinois
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Name

Description
IL-501
Payment Coupon and Instructions - Due Dates
IL-941 Instructions
Illinois Withholding Income Tax Return - Due Dates
IL-941-X Instructions Amended Illinois Withholding Income Tax Return
Schedule P CSV Instructions Illinois Withholding Payroll Schedule
Schedule WC
Instructions
Withholding Income Tax Credits
Schedule WC-I

Withholding Income Tax Credits Information and Worksheets
IL-700-T

Illinois Withholding Tax Tables Booklet
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

Withholding Income Tax Payment and Return Due Dates