The California State Agency that oversees the collection and reporting of State income taxes deducted from payroll checks is: Employment Development Department 800 Capitol Mall Sacramento, CA 95814 888-745-3886 http://www.cahwnet.gov/taxind.htm California requires that you use California form “DE 4A-4, Employee’s Withholding Allowance Certificate” instead of a Federal W-4 Form for California State Income Tax Withholding. […]