South Carolina New Business Registration Guide

State Tax Agencies

• South Carolina Department of Revenue (DOR)

• South Carolina Department of Employment and Workforce (DEW)

Types of Tax

• State Withholding Income Tax

• State Unemployment Insurance (SUI) Tax

South Carolina Withholding Tax

Registration Steps

1. Register for a South Carolina Withholding File Number

• Visit the SC DOR Registration page

• Click on MyDORWAY

• Review application instructions and click Next

• Select Register a New South Carolina Business or Remote Seller

• Choose the appropriate type of ownership from the dropdown menu

• Complete the application form

2. Create a Username and Password

• Go to MyDORWAY

• Click Sign Up

• Select Create Your Profile and follow the steps to create your user account

Need Help?

• Phone: 1-844-898-8542

• Email: RegistrationforTaxes@dor.sc.gov

South Carolina State Unemployment Insurance (SUI) Tax

Registration Steps

1. Register for a South Carolina Unemployment Account Number

• Visit the SC DEW Employer Portal

• Click Employers

• Under "I need to", select Register for an Account – Employers

• Review the registration instructions and click Next

• Create a Username and Password to begin registration

2. Authenticate and Log In

• Return to the SC DEW Employer Portal

• Click Employers

• Under "I need to", select Authenticate My Account – Employers

• Enter your Employer Account ID and PIN

• After authentication, return to the homepage and log in under Log Into My Account > Employers

Need Help?

• Phone: 803-737-2400

• Department: Employer Tax Services

Next Steps

• Update your account with your South Carolina Withholding File Number and Unemployment Account Number. These are required for all South Carolina tax filings to ensure your account is set up correctly.