Last Updated June 18, 2026.
South Carolina employers are responsible for payroll withholding, unemployment insurance contributions, and state reporting obligations. Use the links below to access employer resources.
State Tax Guidelines
South Carolina Department of Revenue – Withholding Tax
Agency Information
Add to existing company setup
Submit a request to your service team to add SC (withholding) to your company setup. Please include the below with your request:
- Withholding – Withholding account number and Deposit Frequency. If you’re unsure of your deposit frequency or account number you can call the agency at 803-896-1450.
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Power of Attorney – POA is required, please obtain the prefilled form from your client service representative.
Register a new company
Employers can register online at https://mydorway.dor.sc.gov/_/. Select the Register a New Business or Tax Account link. Follow the prompts to register your business. Once completed you will receive your account number and deposit frequency within 24 hours.
Power of Attorney
Power of Attorney is required, please obtain the prefilled form from your client service representative.
South Carolina Department of Employment and Workforce – Unemployment tax
Agency Information
Add to existing company setup
Submit a request to your service team to add SCSUI (unemployment) to your company setup. Please include the below with your request:
- Unemployment – Account Number and Tax rate. This can be found on a Tax Rate Notice or the Quarterly contribution report. If you’re unsure of your tax rate or account number, you can call the agency at 803-737-3075.
- Power of Attorney – POA is required, please obtain the prefilled form from your client service representative.
Register a new company
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