S.C. Code Ann. § 31-13-210

Notwithstanding any limitation or restriction now existing by statute heretofore enacted or other provisions of this chapter, the maximum rate of interest that may be paid by persons or families of the beneficiary class served by SECTIONS 31-13-200(1)(a) and 31-13-200(1)(c) for a home loan with funds obtained under this legislation shall not exceed a rate equal to one percent less than the prevailing state real estate usury laws; except that any loan may have a greater rate of interest when such rate is approved by the State Fiscal Accountability Authority after such investigation and hearing as the board may deem necessary.