Arizona’s withholding rates are unchanged for 2025 from those in effect for 2024, according to its 2025 withholding certificate, which was released Dec. 5 by the state revenue department.
The 2025 Form A-4, Arizona Withholding Percentage Election, continues to use tax rates ranging from 0.5% to 3.5% or allows employees to claim exemption from withholding. The default rate if a new employee does not fill out the form within five days of starting employment is 2%.
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