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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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2026 Withholding (Payroll) Tax Forms

File your IL-941 return or pay your IL-501 in MyTax Illinois
Get information about filing your W-2s and 1099s here

Which form should I use?

Use 2025 forms for wages paid in 2025. Example: If you paid employees in December 2025, report it on 2025 forms—even if you file in 2026.

Use 2026 forms below for wages paid starting January 1, 2026. Example: A paycheck dated January 2, 2026 belongs on 2026 forms.

NOTE: The 2026 Withholding forms will be added as are available. This is not the complete list of 2026 Withholding forms.

Form
 Instructions Description

IL-501

  

2026 Payment Coupon and Instructions - use for withholding periods beginning January 1, 2026 - Due dates

IL-700-T

  

2026 Illinois Withholding Tax Tables Booklet - effective January 1, 2026 - December 31, 2026

Pub 131-D

  

2026 Withholding Income Tax Payment and Return Due Dates
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