S.C. Code Ann. § 12-16-530 — Estates of aliens

(A) A tax in an amount computed as provided in this section is imposed upon the transfer of real property and tangible personal property having an actual situs in this State and upon intangible personal property physically present within this State of every person who at the time of death was not a resident of the United States.
The tax is an amount computed by multiplying the federal credit by a fraction, the numerator of which is the value of that part of the gross estate over which this State has jurisdiction for estate tax purposes and the denominator of which is the decedent's gross estate taxable by the United States wherever situated.
(B) Resident aliens of the United States are subject to the tax imposed by this chapter under SECTION 12-16-520 when the decedent, at the time of death, was not a resident of this State but was a resident of the United States. A resident alien who, at the time of death, was a resident of this State and a resident of the United States is subject to the tax imposed by this chapter under SECTION 12-16-510.
(C) For purposes of this section, stock in a corporation organized under the laws of this State is considered physically present within this State.