S.C. Code Ann. § 12-54-85
(B) Except as otherwise provided in this section:
(C) Taxes may be determined and assessed after the thirty-six month limitation if:
(D)
(1) Taxes due to an understatement of taxes resulting from adjustments of the Internal Revenue Service also may be determined and assessed after the thirty-six month limitation if:
(4) For the purposes of this subsection (D):
(E) A tax may not be collected by levy, warrant for distraint, or proceedings in court, unless the:
(3) running of this period is suspended in accordance with this section.
For property tax purposes, the "assessment of the tax" occurs on the later of the last day the tax may be paid without penalty or the date of the tax notice.
(F)
(5) For the purposes of this subsection:
(G) The running of the period of limitations provided in subsections (A), (B), (C), (D), and (E) of this section is suspended:
(5) during the pendency of a stay ordered by the Taxpayers' Rights Advocate.
For purposes of this section, a decision does not become final until the decision cannot be considered, heard, or reheard by request, appeal, or petition by the Administrative Law Judge Division, DMV hearing officers, or any court.