State of Iowa TaxesIowa Department of RevenueIowa Individual Tax InformationIowa Department of RevenueState of Iowa TaxesIowa Department of RevenueIA 1120S S Corporations Return Instuctions, 42-005 2026

1. Click ‘Get Form’ to open the IA 1120S form in the editor.
2. Begin by entering your corporation's name and address, along with the Federal Employer Identification Number (FEIN). Check the box if there is a name or address change.
3. Indicate whether this is a first or final return by checking the appropriate box. Select any applicable statuses such as 'New Business' or 'Merged'.
4. Fill out the Filing Status section, selecting from options like 'Separate Iowa/Separate Federal' or 'Consolidated Iowa/Consolidated Federal'.
5. Proceed to report your Net Income and Additions to Income. Use whole dollars for all entries and follow the prompts for each line item.
6. Complete the Tax, Credits, and Payments section by entering totals from previous schedules as instructed.
7. Finally, review your entries for accuracy before submitting your completed form electronically or via mail.

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