How to File an Arizona Tax Amendment
If you need to change or amend an accepted Arizona state Income Tax Return for the 2024 or previous Tax Year you need to complete Form 140X. Form 140X is a Form used for the Tax Amendment. You can prepare an Arizona Tax Amendment Form for the current Tax Year (2024) on eFile.com, however you can not file it electronically, you must mail it in. For all previous AR Tax Years complete form 140x, 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 Alabama Tax Agency, thus you should file an Alabama Tax Amendment within one year.
Prepare only a AZ State Return
File an Arizona Tax Amendment
You can not eFile a AZ Tax Amendment anywhere, except mail it in.
Only Option: You will need to complete, sign
AZ Form 140X for the appropriate Tax Year - 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 and mail Form 140X to the address listed above.
For all Tax Years prior to current Tax Deadline Prepare, Print, Sign and Mail-In - see address above - your Tax Amendment by Tax Year as soon as possible. You will also file
an IRS Tax Amendment Form 1040X.
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
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 2025 Tax Estimator to get a high-level understanding of your taxes.
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