Complete este formulario para que su empleador pueda retener correctamente de su sueldo el impuesto sobre el ingreso de California. Complete this form so that your employer can withhold the correct California state income tax from your pay.Personal Information. This video will show how to complete DE 4 - employee's withholding allowance certificate online using fillable forms at EDD website. Complete this form so that your employer can withhold the correct California state income tax from your paycheck. Use Form I9 to verify the identity and employment authorization of individuals hired for employment in the United States. Gov (search: IT-2104-I) or scan the QR code below. A W4 form, or "Employee's Withholding Certificate," is an IRS tax document that employees fill out and submit to their employers. Use Form FTB 3853 to see if you owe a penalty, or to claim exemptions from the state individual mandate, on your California state tax return. A W4 tells your employer how much tax to withhold from your paycheck when you start a new job, but you can adjust it any time.