S.C. Code Ann. § 12-16-510 — Estates of residents

(A) A tax in the amount of the federal credit is imposed on the transfer of the taxable estate of every resident, subject, where applicable, to the credit provided in subsection (B).
(B) If any real and tangible personal property of a resident is located outside of this State and is subject to a death tax imposed by another state for which the federal credit is allowed, the amount of the tax due under this section must be credited with the lesser of:
(1) the amount of the death tax paid the other state and credited against the federal estate tax; or
(2) 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 another state or states have jurisdiction to the same extent to which this State would exert jurisdiction under this chapter with respect to the residents of the other state or states and the denominator of which is the value of the decedent's gross estate.
(C) Property of a resident includes:
(1) real property situated in this State;
(2) tangible personal property having an actual situs in this State; and
(3) intangible personal property owned by the resident regardless of where it is located.