Iowa Tax Filing Deadline
The Iowa individual income tax return (Form IA 1040) is due on April 30, 2026. This deadline applies to all taxpayers who are required to file an Iowa income tax return.
Important Notes on the Deadline
- If the due date falls on a weekend or holiday as defined in Iowa Code section 421.9A, the deadline is extended to the next regular business day.
- Taxpayers must file Form IA 1040 if they meet any of the filing requirements set by the Iowa Department of Revenue.
- Estimated tax payments for Iowa residents are managed using Form IA 1040ES, which is available for the 2025 tax year.
How to File Your Iowa Tax Return
Using Online Taxes (OLT) software, you can easily file your Iowa state tax return:
- From within your tax return (online), click on "State" in the left menu (or tap the three dots in the top-right corner for mobile devices).
- Select "Start or Revisit Iowa state."
- Follow the on-screen prompts to enter your personal, income, and deduction information.
- Review your return in the 'Tax Summary' section before submission.
Additional Forms and Credits
Depending on your situation, you may need to include additional forms such as:
- Form IA 100J – Capital Stock Election Deduction
- Form IA 100D – Capital Gain Deduction for Timbers
- Form IA 100E – Capital Gain Deduction for Business
- Form IA 100G – Capital Gain Deduction for Retired Farmers
- Form IA 147 – Franchise Tax Credit
Source:
Form IA 1040 - Individual Income Tax Return
Iowa Individual Income Tax Forms and Instructions
Form IA 147 - Franchise Tax Credit
Form IA 100J - Capital Stock Election Deduction
Form IA 100D - Capital Gain Deduction for Timbers
Disclaimer: Always verify details with official Federal or State Department of Revenue Forms and Instructions.