2024 Iowa State Tax Deadlines
Iowa Individual Income Tax Filing deadlines and extensions for 2024
If you are a resident or have been involved in significant business operations within Iowa, then you might be required to file Iowa State Taxes. We examine the most important tax deadlines and tax extensions for Iowa in 2024.
Iowa Business Tax Deadlines for 2024
C Corporation
Iowa C Corporation Tax Deadlines for 2024
You must file & pay Corporate Income Taxes in Iowa by April 30, 2025.
File Online with the Iowa Department of Revenue or through approved software.
File by Mail must be postmarked by the due date.
Form IA 1120 – Iowa Corporation Income Tax Return
Extension to File Taxes in Iowa for 2024
You must send payment for taxes in Iowa for the fiscal year 2024 by April 30, 2025.
The Extension Deadline is October 30, 2025, to file your Iowa corporate income tax return.
Iowa automatically grants a 6-month extension to file corporate income tax returns. This means you do not need to file for an extension in Iowa.
This is an extension to FILE, not an extension to PAY – payment is still due April 30, 2025.
Pass-Throughs
Iowa S Corporation & Partnership Tax Deadlines for 2024
You must file in Iowa by March 15, 2025.
File Online with the Iowa Department of Revenue or through approved software.
File by Mail must be postmarked by the due date.
Form IA 1120S – S-Corporation Income Tax Return
Form IA 1065 – Partnership Return of Income
Extension to File S Corporation & Partnership Taxes in Iowa for 2024
You must send a payment for taxes in Iowa for the fiscal year 2024 by April 30, 2025.
The Extension Deadline is October 30, 2025, to file your Iowa S Corporation or Partnership income tax return.
Iowa automatically grants a 6-month extension on filing pass-through entity tax returns. This means you do not need to file for an extension in Iowa.
This is an extension to FILE, not an extension to PAY – payment is still due April 30, 2025.
Iowa Individual Tax Deadlines for 2024
Estimated Tax Deadline for Iowa 2024
Estimated tax payments should be made:
- April 30, 2024
- June 30, 2024
- September 30, 2024
- January 31, 2025
Individual Tax Deadline for Iowa 2024
You must file & pay Individual Income Taxes in Iowa by April 30, 2025.
File Online with the Iowa Department of Revenue or through approved software.
File by Mail must be postmarked by the due date.
Applicable forms:
- IA 1040 – Residents
- IA 1040A – Part-Year Residents and Nonresidents
Extension to File Taxes in Iowa for 2024
You must send payment for taxes in Iowa for the fiscal year 2024 by April 30, 2025.
The Extension Deadline is October 15, 2025, to file your Iowa Individual Income tax return.
Iowa automatically grants a 6-month extension on filing personal income taxes. This means you do not need to file for an extension in Iowa.
This is an extension to FILE, not an extension to PAY – payment is still due April 30, 2025.
Sources
- Iowa Department of Revenue - Individual Filing Information
- State of Iowa Taxes | Iowa Department of Revenue
The material discussed on this page is meant for general illustration and/or informational purposes only and is not to be construed as investment, tax, or legal advice. You must exercise your own independent professional judgment, recognizing that advice should not be based on unreasonable factual or legal assumptions or unreasonably rely upon representations of the client or others. Further, any advice you provide in connection with tax return preparation must comply in full with the requirements of IRS Circular 230.
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