The tax rates used on Arizona’s withholding certificates are decreasing for 2023. The Arizona Department of Revenue (DOR) updated Form A-4 to reflect lower personal income tax rates. To view and download the updated form, click here.
All employers in Arizona are required to make the 2023 version of Form A-4 available to their employees by January 31st, 2023. The DOR requires all employees to complete and submit a new Form A-4 for 2023. For any employee who fails to fill out the new form by February 15th, 2023, the default withholding rate will now be 2% instead of 2.7%. Federal Form W-4 is not an acceptable substitute for state withholding purposes.
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