2011 and Prior Years Withholding Tax Forms (Payroll)
|Illinois Withholding Income Tax Return and Instructions
Note to Annual Filers: IL-941-A is obsolete, use IL-941 to file your annual return.
|Amended Illinois Withholding Tax Return
Note to Annual Filers: IL-941-A-X is obsolete, use IL-941-X to amend a previously filed IL-941-A.
|Amended Illinois Income Tax Withholding Return for Household Employers
Note: For tax years on or before 2010. Beginning with 2011, file your household withholding tax on your IL-1040. Click here for more information.