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Illinois - W2 State Filing Requirements

The state requires the filing of Form W-2 if wages were paid to Illinois employees or if income tax was withheld during the year.

Illinois State ID Format:
 
  • 9 digits - 2 digits and a hyphen followed by 7 digits (Eg: 99-9999999)
     
Filing Criteria and Requirements


Criteria 1: Even if there is no Illinois state tax withheld

  • Filing Method: Direct State Filing

    • You must file a W-2 directly with the state.

  • Additional Form Required: Not required

  • Deadline: January 31, 2025

For more information about Illinois’s W2 filing requirements, click here.

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