IA IA 1120S Information

Every S corporation doing business in Iowa, deriving income from sources within Iowa, or which is domiciled in Iowa, must file an Iowa S corporation return. S corporations, interest charge domestic international sales corporations, and foreign sales corporations should file form IA 1120S. If the S corporation is a financial institution, it must also file form IA 1120F. Note: A non-Iowa S corporation should not file only because one or more of its shareholders are Iowa residents or because the S corporation is registered with the Iowa Secretary of State.

Link to official form info:

Link to official form info for IA 1120S

Tax Reminder works year round to keep official tax form info up-to-date for Iowa and the rest of the USA. The IRS and states change their forms often, so we do the hard work for you of figuring out where the official form info is located.

To access the official link to form IA IA 1120S and get reminded when it's due, sign up for a free Tax Reminder account:

  • Upcoming Due Dates in the Next Year:*
  • Monday Mar 17, 2025
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    * Due dates are based on the filing requirements for this form and may vary depending on your tax year.

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