S.C. Code Ann. § 37-2-210
(4) If, with respect to a transaction payable according to its original terms in no more than 61 instalments, the creditor has made either:
(5) In lieu of computing a rebate of the unearned portion of the credit service charge as provided in subsection (4) of this section, the creditor:
(8) Upon prepayment in full of a precomputed consumer credit sale by the proceeds of consumer credit insurance (Section 37-4-103), the consumer or his estate is entitled to the same rebate as though the consumer had prepaid the agreement on the date the proceeds of insurance are paid to the creditor, but no later than 20 business days after satisfactory proof of loss is furnished to the creditor.
PART 3. DISCLOSURE AND ADVERTISING