Illinois payroll tax form information

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Select a state from the drop-down list or visit the State-specific payroll tax form information topic to view payroll tax form information for that state.

Unemployment forms

Agency: Illinois Director of Employment Security

Website: http://www.ides.state.il.us/

Description Approval Information Filing Methods Web fill-in Form Due Date
UI-3/40 No approval required Paper, Electronic No Last day of the following month*

* Due date adjusts for non-banking days

Withholding forms

Agency: Illinois Department of Revenue

Website: http://tax.illinois.gov/

Description Approval Information Filing Methods Web fill-in Form Due Date
IL-501 Approved for 2022 Paper, Electronic No 15th of the following month*
IL-941 Non-submittable only Web fill-in, Electronic No Last day of the following month*
IL-941 Schedule P Non-submittable only Web fill-in, Electronic No Last day of the following month*
IL-941 Schedule WC Non-submittable only Web fill-in, Electronic No Last day of the following month*
W-2 Copy 1 Available up to 2022 (No approval required) Electronic No January 31st*

* Due date adjusts for non-banking days

Form processing tips

  • Publication 131 states that a business can be designated as an annual return filer and a monthly depositor. To change the filing frequency of the IL-941 form from Quarterly (the default) to Annually, mark the Monthly depositor filing IL-941 Annually checkbox in the Payroll tax forms additional information dialog.
  • Pursuant to Public Act 97-0689, employers with a cumulative total of 25 or more employees in the prior calendar year are required to submit monthly wage reports electronically. Employers will continue to submit quarterly contribution and wage reports, and submit eight additional monthly wage report.
  • Mark the Enable IL Monthly SUTA Filing checkbox in the Payroll tax forms additional information dialog to makes available a monthly SUTA worksheet that you can print from the Actions > Process Payroll Tax Forms screen or the Actions > Edit Payroll Tax Forms screen. The Illinois Monthly SUTA Filing Report is required for the first and second months of each quarter: January and February; April and May; July and August; October and November. You can use the worksheet to reconcile and create the internet file to comply with the monthly filing requirements. This internet file can then be uploaded via the MyTax Illinois website.

E-filing notes

  • Forms UI-3/40, UI-40A, IL-501, IL-941, and IL-W-3
    • Registration with the State of Illinois is required prior to filing.
    • File format - FSET
    Notes
    • Enter the Illinois EFIN and Reporting agent PIN in the Transmission Information dialog, accessed from the Actions > Process Electronic Forms screen.
    • There is a per-return transmission cost for electronically filing federal 94x forms; enrollment files do not accrue a fee. There is no additional transmission cost for electronically filing state forms. For more information, see Common questions about FSET.
  • Form IL-941
    • To mark Box B on Form IL-941, you must enter an inactive date for the client on the Main tab of the Setup > Clients screen and set the Inactive Reason to "Business Closed". If the client is not inactive, you can override Box B in the Actions > Edit Payroll Tax Forms screen and use MM/DD/YYYY as the format for the closing date.
    • To resolve the critical diagnostic Line 2 does not equal Line 2b-2d. Line 2 is the total SIT from the Employee Data tab: Line 2 must match both the sum of lines 2b-2d and the totals from Schedule P. If you enter an override that affects one of these lines, you need to make the override in both the SIT column on the Employee Data tab and the IL income tax withheld by day to keep the form in balance.
  • Illinois Form W-2 Copy 1
    • Registration required - Yes, a MyTax Illinois account is required
    • File format - FSET

State ID formats

Unemployment ID: 8 digits formatted #######-#

Withholding ID: Must match the federal EIN

New hire reporting

Reporting methods

File Upload Type: Internet

General reporting requirements

Electronic filing required: No
Filing frequency: 20 days from hire date
Registration required: No

Website:

Related topics

State-specific payroll tax form information

Processing state payroll tax forms

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