2016 Form IL-1120-ST, Small Business Corporation Replacement Tax Return-2026

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The document is the 2016 Form IL-1120-ST, a Small Business Corporation Replacement Tax Return for Illinois. It outlines the process for small business corporations to report their income, calculate taxes owed, and submit necessary information to the Illinois Department of Revenue. The form includes sections for identifying the business, reporting income and losses, calculating base income or loss, and determining net tax obligations. It also provides instructions for filing and payment deadlines.

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Click ‘Get Form’ to open the 2016 Form IL-1120-ST in our editor.
Begin by entering your complete legal business name in Section A. If there has been a name change, check the corresponding box.
In Section B, provide your federal employer identification number (FEIN) and indicate if you are part of a unitary business group.
Fill out your mailing address in Section C, ensuring all details are accurate for correspondence.
Proceed to Section D if this is a final return due to business sale; enter the sale date and new owner's FEIN.
Continue through each section, carefully inputting income figures and deductions as outlined in Steps 2 through 9. Use our platform's features to easily navigate between fields and sections.
Finally, review all entries for accuracy before signing in Step 10. Ensure that all required attachments are included.

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il 1120 st instructions

2025 Form IL-1120-ST IL-1120-ST Instructions 2025 IL-1120-ST-V IL-1120-ST Instructions 2024 Form IL-1120 Instructions IL-1120-ST payment Illinois Small Business Corporation Replacement Tax Return IL-1120 Instructions 2024