Get Answers Support Payroll State South Carolina(SC) What are the SC W-4 requirements? Last modified 9/23/2024 2:15:44 AM EST South Carolina employees must complete the SC W-4, Employee’s withholding allowance Certificate. Employees hired after 31 December 2019 or previously hired employees who want to change their state withholding must complete this form. 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