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Illinois Free Printable  for 2024 Illinois — Estimated Income and Replacement Tax Payments for Corporations

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More about the Illinois Form IL-1120-ES Estimated


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We last updated Illinois Form IL-1120-ES in January 2022 from the Illinois Department of Revenue. This form is for income earned in tax year 2023, with tax returns due in April 2024. We will update this page with a new version of the form for 2025 as soon as it is made available by the Illinois government.

Other Illinois Corporate Income Tax Forms:

In addition to information about Illinois' income tax brackets, Tax-Brackets.org provides a total of 76 Illinois income tax forms, as well as many federal income tax forms. Here's a list of some of the most commonly used Illinois tax forms:

Form Code Form Name
Form IL-1041-V Payment Voucher for Fiduciary Income and Replacement Tax
Schedule UB-NLD Unitary Illinois Net Loss Deduction [OBSOLETE]
Form IL-1120-ST Small Business Corporation Replacement Tax Return (Includes Schedule B)
Form IL-1120 Corporation Income and Replacement Tax Return
Schedule 1299-S Enterprise Zones, Foreign Trade Zones, and Sub-Zones

Download all IL tax forms View all 76 Illinois Income Tax Forms


Disclaimer: While we do our best to keep Form IL-1120-ES up to date and complete on Tax-Brackets.org, we cannot be held liable for errors or omissions. Is this form missing or out-of-date? Please let us know so we can fix it!

Tax Form Sources:

** This Document Provided By Tax-Brackets.org **
Source: http://www.tax-brackets.org/illinoistaxforms/form-il-1120-es