Get Answers Support W-4/W-9/W-8 Form W-4 General What is Form W-4? Last modified 5/25/2020 11:29:25 AM EST Form W-4, Employee's Withholding Certificate is an IRS tax form that allows employers to withhold federal income taxes from the employee's paycheck. Form W-4 must be completed by employees. Was this helpful? Yes No Need more help? Get in touch with our dedicated support team Contact Us (704) 684-4751 support@taxbandits.com Sign Up for a FREE TaxBandits Account! The Smart CPA Choice Register Now Already have an account? Sign in