2023 Iowa State Tax Deadlines

Iowa Individual Income Tax Filing deadlines and extensions for 2023.

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 look at the most important tax deadlines and tax extensions for Iowa in 2023.

C Corporation

Iowa C Corporation Tax Deadlines for 2023

You must file & pay Corporate Income Taxes in Iowa by April 30, 2024

Applicable form: 

Form IA 1120 - Iowa Corporation Income Tax Return

Extension to File Taxes in Iowa for 2023

You must send payment for taxes in Iowa for the fiscal year 2023 by April 30, 2024.

A federal extension does not apply for Iowa purposes. If at least 90% of your total tax liability is paid by April 30, 2024, you will automatically have an additional six months to file your return. You have until October 31, 2024, to file your return timely.

This is an extension to FILE, not an extension to PAY - payment is still due May 1, 2024

Pass-Throughs

Iowa S Corporation & Partnership Tax Deadlines for 2023

You must file in Iowa by April 30, 2024

Applicable forms: 

Form IA 1120S - Iowa Income Tax Return for S Corporation 

Form IA 1065 - Iowa Partnership Return of Income

Extension to File S Corporation & Partnership Taxes in Iowa for 2023

You must send payment for taxes in Iowa for the fiscal year 2023 by April 30, 2024.

A federal extension does not apply for Iowa purposes. If at least 90% of your total tax liability is paid by April 30, 2024, you will automatically have an additional six months to file your return. You have until October 31, 2024, to file your return timely.

This is an extension to FILE, not an extension to PAY - payment is still due April 30, 2024.

Iowa Individual Tax Deadlines for 2023

Estimated Tax Deadline for Iowa 2023

Estimated tax payments are made: 

  • April 30, 2023
  • June 30, 2023
  • September 30, 2023
  • January 31, 2024

See IA-1040ES for the amount to pay with each voucher.

Individual Tax Deadline for Iowa 2023

You must file & pay Individual Income Taxes in Iowa by May 2nd, 2024

File Online 

File by Mail must be postmarked by the due date

Applicable forms:

IA-1040 - Full Time Resident, Part Year Resident & Nonresidents

Extension to File Taxes in Iowa for 2023

You must send payment for taxes in Iowa for the fiscal year 2023 by April 30, 2024.

The Extension Deadline is October 31, 2024 to file your Iowa Individual Income tax return.
Iowa automatically grants 6 months extensions 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, 2024

Estates Tax Deadline for Iowa in 2023

Iowa no longer requires individuals to pay Estate Tax.

Farmer and Fisherman Taxes for Iowa 2023

If at least 2/3 of your gross income for the taxable year is derived from farming, you may pay estimated tax at any time on or before January 15, 2024. If you wait until January 15, 2024, you must pay the entire balance of the estimated tax. However, if farmers file their tax return on or before March 1, 2024, and pay the total tax at that time, they need not file estimated tax.

Sources

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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