S.C. Code Ann. § 12-6-600: Taxation of partnerships.

An entity treated as a partnership for federal income tax purposes is not subject to tax under this chapter. Each partner shall include its share of South Carolina partnership income on the partner's respective income tax return. All of the provisions of the Internal Revenue Code apply to determine the gross income, adjusted gross income, and taxable income of a partnership and its partners, subject to the modifications provided in Article 9 of this chapter and subject to allocation and apportionment as provided in Article 17 of this chapter.