State and federal registration is an important step in your business journey. Use the following information to ensure your business is properly registered. Image Applying for a Federal Employer Identification Number Find information about how to apply for a Federal Employer Identification Number (FEIN). Image Registering with the South Carolina Secretary of State Businesses operating in South Carolina must register with the South Carolina Secretary of State. Find information on how to register. Image Changing Your Business Registration Steps on how to edit your existing federal or state business registration. Image Closing Your Business Find out how to close your business registration and accounts.