S.C. Code Ann. § 62-7-506
All trustees of any trust governed by the laws of this State whose governing instrument does not expressly provide that this section shall not apply to such trust are required to act or to refrain from acting so as not to subject the trust to the taxes imposed by Sections Sections 4941, 4942, 4943, 4944, or 4945 of the Internal Revenue Code of 1954, or corresponding provisions of any subsequent United States internal revenue law.