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Form 1120-S. Department of the Treasury Internal Revenue Service. U.S. Income Tax Return for an S Corporation. Do not file this form unless the corporation has filed or is attaching Form 2553 to elect to be an S corporation. Go to www.irs.gov/Form1120S for instructions and the latest information. OMB No. 1545-0123.
Illinois Department of Revenue. 2023 Form IL-1120. *63512231W* Corporation Income and Replacement Tax Return. See “When should I file?” in the Form IL-1120 instructions for a list of due dates. If this return is not for calendar year 2023, enter your fiscal tax year here. Enter the amount you are paying. Tax year beginning 20 , ending.
If you are required to file Form IL-1120-ST, you should register with IDOR. You may register • online with MyTax Illinois, our free online account management program for taxpayers; • by completing Form REG-1, Illinois Business Registration Application, and mailing it to the address on the form; or • by visiting a regional office.
A Form 1120-S is also known as an U.S. Income Tax Return for an S Corporation. An S Corporation is a corporation that elects to pass corporate income, losses, deductions, and credits through to their shareholders. This will allow the corporation to avoid double taxation.
Download or print the 2023 Illinois Form IL-1120 (Corporation Income and Replacement Tax Return) for FREE from the Illinois Department of Revenue.
You can download Form 1120S directly from the IRS website. Or if you use tax software, you can find it there too.
1120-S. Department of the Treasury Internal Revenue Service. U.S. Income Tax Return for an S Corporation. Do not file this form unless the corporation has filed or is attaching Form 2553 to elect to be an S corporation. Go to www.irs.gov/Form1120S for instructions and the latest information.
