A corporation's South Carolina gross income, taxable income, and the unrelated business income of a corporation exempt from taxation under Internal Revenue Code Section 501 et seq., is computed as determined under the Internal Revenue Code with the modifications provided in Article 9 of this chapter and subject to allocation and apportionment as provided in Article 17 of this chapter.
Computation of corporation's gross and taxable income
S.C. Code Ann. § 12-6-580, under Title 12, Chapter 6.
S.C. Code Ann. § 12-6-580