Form SC1040 is the South Carolina Individual Resident Income Tax Return. The form is used by people working in South Carolina to file their state taxes, according to Tax How.
Any person that worked at any point during the year in the state must file an income tax return with the state, as noted by Tax How. If a person lives in South Carolina and works out of the state, they may also be required to file a SC1040. For South Carolina residents seeking to file an amended return, they must file a SC1040X. Residents can file their own forms, or they can have a professional fill out and file their taxes for them.