S.C. Code Ann. § 38-15-50

In lieu of depositing bonds with a market value of one hundred thousand dollars, an insurer may satisfy Section 38-15-30 by depositing one hundred thousand dollars in cash in the name of the director with the trust department of a national or state bank of this State approved by the director or his designee. The director or his designee shall give the insurer a receipt for the deposit. When the insurer ceases to do business in this State, has settled all claims against it, and has been released from all the bonds upon which it has been taken as surety, the cash deposit must be delivered to the proper party upon presentation of the receipt of the director or his designee. While the cash is deposited, its owner is entitled to collect the interest. The cash deposit is liable to the same extent as securities deposited with the director and subject to like procedure in case of default or insolvency.