Illinois Department of Revenue Partnership Replacement Tax Return Due on or before the 15th day of the 4th month following the close of the tax year - tax illinois 2026

1. Click ‘Get Form’ to open it in the editor.
2. Begin by identifying your partnership. Enter your business name and mailing address in the designated fields. Make sure to include your federal employer identification number (FEIN). If this is your first return or if there’s an address change, check the appropriate box.
3. Next, figure your ordinary income or loss. Refer to federal Schedule K for accurate figures and input them into the corresponding lines for rental activities and portfolio income.
4. Proceed to calculate your unmodified base income or loss by entering charitable contributions and other expenses as instructed. Ensure all calculations are accurate for a smooth filing process.
5. Finally, review all entries before signing. Use our platform's features to save, share, or print your completed form for submission.

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