2024 Arizona Income Tax Filing Deadlines

Arizona State Income Taxes for current Tax Year can be prepared and e-Filed now along with an IRS or Federal Income Tax Return (or you can learn how to only prepare and eFile an Arizona state return). Find IRS or Federal Tax Return deadline details.

Tax Deadlines and the Arizona Tax Day

The majority of deadlines listed here are for Tax Year 2023. Some apply to upcoming Tax Years and some are IRS or Federal deadlines.

Deadline

Type

Description

Prepare, eFile, Download
AZ + IRS Tax Return

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Start Federal and Arizona Tax Returns

April 15, 2024

Tax Year 2023
Income Tax Return

Prepare and e-File an IRS (Due Date April 15, 2024) and Arizona State Income Tax Return (Due Date April 15, 2024) until October 15, 2024. - eFileIT

April 15, 2024

2023 Income Tax Extension

Arizona Income Tax Extension Details

October 15, 2024

Tax Year 2023
Income Tax Return after the April 15, 2024 Arizona Tax Extension

Last day to e-File a 2023 Arizona State Income Tax Return for Tax Extension Filers and late eFilers. You can only e-File (to file by paper see below) Arizona Income Tax Return together with an IRS Tax Return. - eFileIT

October 15, 2024 via mail-in Forms.
Forms incl. Mailing Address are listed below.

Tax Year 2023
Income Tax Return after April 15, 2024 Arizona Tax Extension

Deadline for taxpayers who got an AZ Tax Extension to file their Arizona Income Tax Return by mail-in Forms - the Forms incl. mailing addresses are listed below - is Oct. 15, 2024. (Optionally, the eFileIT deadline is Oct. 15, 2024). Instructions on how to only prepare- without the IRS return - prepare and file an Arizona State Income Tax Return on eFile.com.

Complete and Mail In Now

Tax Amendment for all Tax Years

Detailed Instructions on how to prepare and mail in an Arizona State Income Tax Return Amendment.

IRS Due Dates

IRS Tax Return, Extension, Amendment Deadlines

Detailed current and future Federal or IRS Income Tax Deadlines

2024, 2025, etc.

Other State Tax Return, Extension, Amendment Deadlines

Select respective State Tax Return Deadlines.

2024, 2025, etc.

IRS Federal Income Tax Return, Amendment, Extension Deadlines

2023, 2024 Tax Year Income Tax Return Deadlines

April 15, 2026

2022 Arizona Income Tax Return Refund.
IRS Tax Return Refund Claim Deadline

The last day to file - you will not face late filing penalties - and claim your 2022 Arizona Income Tax Return Refund. This deadline does not apply if you owe 2022 Income Taxes.

April 15, 2027

2023 Arizona Income Tax Return Refund.
IRS Tax Return Refund Claim Deadline

The last day to file - you will not face late filing penalties - and claim your 2023 Arizona Income Tax Return Refund. This deadline does not apply if you owe 2023 Income Taxes.

April 15, 2028

2024 Arizona Income Tax Return Refund.
IRS Tax Return Refund Claim Deadline

The last day to file - you will not face late filing penalties - and claim your 2024 Arizona Income Tax Return Refund. This deadline does not apply if you owe 2024 Income Taxes.

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