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How to File an Arizona Tax Amendment Form

If you need to change or amend an accepted Arizona State Income Tax Return for the current or previous Tax Year you need to complete Form 140X. Form 140X is a Form used for the Tax Return and Tax Amendment. You can prepare a 2020 Arizona Tax Amendment on eFile.com, however you can not submit it electronically. In comparison, the IRS requires a different Form - Form 1040X -to amend an IRS return (do not use Form 1040 for an IRS Amendment).

If you need to amend or change your IRS or AZ Tax Return, click on the Arizona Amendment Form and complete, sign it here on eFile.com. Instructions for an IRS Tax Amendment.

File a 2020 Arizona Tax Amendment
You can not eFile a AZ Tax Amendment anywhere, except mail it in. However, you can prepare it here on eFile.com.
Option 1: Sign in to your eFile.com account, modify your Return and download/print the AZ Form 140X under My Account. Mark the check box "Amended Return" sign the form and mail it to one of the addresses listed below.
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 AZ Form 140X - Print, Mail the Form to AZ Tax Department to:
Refund Amendment Return:
Arizona Department of Revenue
P.O. Box 52016
Phoenix, AZ 85072-2016
AZ Tax Amendment Form 140X
This Form can be used to file an: Income Tax Return, Tax Amendment, Change of Address. Check the proper check box on the Form.
Step 1: Select the AZ Form 140X by Tax Year below
Step 2: Sign, Mail Form 140X to one of the addresses listed above
Tax Year 2020 only: Prepare online on eFile.com until Oct. 15, 2021. When done Print, Sign and Mail in - not eFile - Your Tax Amendment, Address Change etc.
After Oct. 15 Prepare, Print, Sign and Mail-In - see address above - your Tax Year 2020- Form 140X.
How to correct a rejected Tax Return
If your AZ Tax Return was rejected by the AZ Tax Agency - not eFile.com - instructions on how to correct a rejected Arizona Tax Return.
Check Your AZ Tax Amendment Status
1. Call the Arizona Department of Revenue at (602) 352-4090
2. Contact the AZ Dep. of Revenue
Arizona 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 Arizona 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 Arizona 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 Arizona Tax Income Taxes Deadlines
Arizona Income Tax Penalties
Find out how Arizona 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.