141AZEXT: 141AZEXT Application for Filing Extension for Fiduciary Returns (2025)
Arizona · Arizona DOR · Used for tax years 2025
Arizona Form 141AZ EXT is an application for a filing extension for estate and trust fiduciary returns. It reports 2025 tax liability, estimated tax payments, the balance of tax, and any payment included with the request.
Who files this form
Form 141AZ EXT is for fiduciaries requesting an extension to file an Arizona fiduciary return, Form 141AZ.
Arizona accepts a valid federal extension for the period it covers. If you are using a federal extension, this form can be used to send an Arizona extension payment.
When it's due
For the 2025 calendar tax year:
- April 15, 2026: Your filing extension request must be postmarked by this date.
- September 30, 2026: Extended return due date for fiduciaries using the automatic 5½-month filing extension.
- October 15, 2026: Extended return due date for a Qualified Funeral Trust using a federal extension on Form 7004. These trusts receive a 6-month extension.
What you'll need
Have the following information ready:
- Estate or trust name and EIN.
- Fiduciary's name, title and mailing address.
- Daytime phone number for the fiduciary or representative, including area code.
- Calendar or fiscal tax year information. Fiscal-year filers must enter the taxable year-end date and 5½-month extended due date.
- Tax liability for 2025, which you may estimate, and Arizona estimated tax payments for 2025.
If sending a payment, include it with Form 141AZ EXT.
How to file
- Enter the estate or trust and fiduciary information, and select the calendar or fiscal tax year.
- Check one extension option: calendar-year extension, fiscal-year extension, or use of a federal extension with this form transmitting the Arizona extension payment.
- Enter your 2025 tax liability on line 1 and Arizona estimated tax payments on line 2. Subtract line 2 from line 1 to calculate the balance of tax on line 3.
- Enter the payment amount on line 4, rounded to the nearest dollar.
If sending a payment: Make the check payable to Arizona Department of Revenue. Write the estate or trust's name, EIN and 2025 141AZ extension on the payment. Include it with the form and mail to:
Arizona Department of Revenue
PO Box 29085
Phoenix, AZ 85038-9085
If not sending a payment: Mail the form to:
Arizona Department of Revenue
PO Box 52138
Phoenix, AZ 85072-2138
Common mistakes
- Do not staple any items to the form.
- Do not mark the area labeled “Revenue Use Only.”
- Check only one extension option.
- Round your payment to the nearest dollar.
- When sending a payment, include the estate or trust's name, EIN and “2025 141AZ extension” on it, and include it with the form.
- Use the correct mailing address for whether or not you are sending a payment.
- If this is a Grantor Trust, note that the EIN field directs you to the instructions. Those instructions are not included in the supplied text.
Questions people ask
Can I estimate the tax liability on line 1?
Yes. The form says you may estimate your tax liability for 2025.
How long is the Arizona filing extension?
Arizona grants an automatic 5½-month extension to fiduciaries filing Form 141AZ.
Will Arizona accept a federal extension?
Yes. Arizona accepts a valid federal extension for the period it covers, including the automatic 5½-month fiduciary federal filing extension.
Is the extension different for a Qualified Funeral Trust?
Yes. A Qualified Funeral Trust using a federal extension on Form 7004 receives the same 6-month extension period to file Form 141AZ.
Does the mailing address depend on whether I send a payment?
Yes. Requests with a payment go to PO Box 29085, Phoenix, AZ 85038-9085. Requests without a payment go to PO Box 52138, Phoenix, AZ 85072-2138. Both are addressed to the Arizona Department of Revenue.