Arizona's Individual Income Tax Withholding Form (Arizona Form A-4) has been updated to reflect lower individual income tax rates. Every Arizona employer is required to make this form available to its employees by January 31, 2023.
The new form can be found on ADOR’s website.
The new A-4 form has seven new withholding election rate boxes while retaining both the zero withholding rate option and the line for additional Arizona withholding. If an employee fails to fill out the new A-4 form, the default rate will be 2.0%.
Do not send these withholding forms to the Revenue Department, they should be kept by the employer and the employee with their tax records.
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