How to Prepare and File an Iowa Amended Tax Form

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If you need to change or amend an accepted Iowa State Income Tax Return for the 2024 to 2023 Tax Year you need to complete Form IA 1040 along with Schedule IA 102. Form IA-1040X (Amended Iowa Individual Income Tax Return) is often used for tax years 2022 and earlier. Form IA-1040 is a Form used for the Tax Return and Tax Amendment. You can complete a 2024 Iowa Tax Amendment via the link below - not from within your eFile.com account. However you can not submit it electronically. For all previous IA Tax Years complete form IT-40 and IT-40X, see below by Tax Year. In comparison, the IRS requires a different Form - Form 1040X -to amend an IRS return (do not use Form 1040 for an IRS Amendment).

The IRS might send you a notification to change an error on your Return, or you might have discovered an error. If you or the IRS amended or changed one of your IRS Tax Return(s), the IRS will report this to the Iowa Tax Agency, thus you should file a Iowa Tax Amendment within one year.

Function

Description

Iowa Tax Deadlines, Forms, Extension, Penalties

Instructions, Resources on how to prepare and e-File Iowa Tax Returns or how to prepare an Extension and/or previous Year Tax Returns

Prepare, eFile a 2024 IA + IRS Tax Return: Detailed eFile.com Service Overview

Start Federal and Iowa Tax Returns

Prepare only a IA State Return

Step by step instructions on how to only Prepare - not e-File - one or more State Returns on eFile.com.

File a 2024 Iowa Tax Amendment

You can prepare an Iowa Tax Amendment for the 2024 tax year here on eFile.com; the amendment can not be e-filed. After you have prepared the amendment, download the PDF from your My Account, check the box and mail in the form to the address listed below. For other tax years complete the form below before you print, sign and mail in the form.
You can prepare it here on eFile.com.
Option 1: Sign in to your eFile.com account, modify your Return and download/print the IA Form 1040 under My Account. Complete and attach Amended Schedule IA 102, mark the check box "Amended Return" on your IA 1040 form, and sign and mail it.
Option 2: If you don't have an eFile.com account follow the step by step instruction on how to prepare a tax return/amendment.
Option 3: If you want to do the math on your own paper return then complete, sign IA 1040 and IA 102 - Print, Mail the Form to IA Tax Department to:
Iowa Income Tax - Document Processing
P.O. Box 9187
Des Moines, IA 50306-9187

IA Tax Amendment Form IA-1040
This Form can be used to file a: Tax Return, Tax Amendment, Change of Address. Check the proper check box on the Form.

Step 1: Select the IA Form IA-1040 by Tax Year below
Step 2: Sign and mail Form IA-1040 to the address listed above.

How to correct a rejected Tax Return

If your IA Tax Return was rejected by the IA Tax Agency - not eFile.com - instructions on how to correct a rejected Iowa Tax Return.

For all Tax Years prior to 2024 tax year, prepare, Print, Sign and Mail-In - see address above - your Tax Amendment by Tax Year as soon as possible.

IA 102
2025 Form IA 1040
2024 Form IA 1040
2023 Form IA 1040
Form IA 1040-X - For tax years 2022 and prior

Check Your IA Tax Amendment Status

1. Call the Iowa Department of Revenue at (515) 281-3114.
2. Contact the IA Dep. of Revenue

Iowa Refund Deadlines

A. Three years from the due date of the original tax year return, including valid filing extensions.
B. One year from the final determination of the amended federal return or federal change, whichever is later, provided that the allowable refund is not more than the decrease in Iowa tax attributable to the federal change or correction.
C. Two years from the payment of an assessment, provided the amended return raises issues relating only to the prior assessment and the refund does not exceed the amount of tax paid on the prior assessment.
D. Two years from the filing of an amended Iowa return resulting in the payment of additional tax, provided that the current amended return raises issues relating solely to the prior amended return and that the refund does not exceed the amount of the tax payment made as a result of the prior amended return.
Additional Iowa Tax Income Taxes Deadlines

Iowa Income Tax Penalties

Find out how Iowa Late Filing and Late Payment Penalties are calculated.
For IRS Tax and Late Filing Penalties we have an easy to use tool: The PENALTYucator.

File an IRS Tax Amendment by Tax Year

Instructions on how to prepare an IRS Tax Amendment on eFile.com, however the IRS does not accept Tax Amendments electronically.

Will I get a bigger tax refund in 2026?

Many taxpayers can expect a bigger tax refund on their 2025 taxes. To help you keep up with soaring inflation, the IRS is making bigger changes than usual that could save you big money on your 2025 taxes, which is the tax return you'll file in 2026.

Take control of your personal life relationships, finances, and taxes: follow the tips on this page and keep up with tax planning for next year. You can use this free Tax Refund Calculator 2025 to get a high-level understanding of your taxes.

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