South Carolina Department of Revenue – Withholding Tax
South Carolina Department of Employment and Workforce – Unemployment tax
Add to existing company setup
Submit a request to your service team to add SC (withholding) and/or SCSUI (unemployment) 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.
- 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
South Carolina Department of Revenue
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.
South Carolina Department of Employment and Workforce
Register online at https://www.scbos.sc.gov/. Select Login at the middle of the page then create a new SCBOS user account. Follow the prompts to register your business. Once completed you will receive your account number and rate within 2-3 weeks.
Third Party Registration and/or Power of Attorney Instructions
Power of Attorney is required, please obtain the prefilled form from your client service representative.