S.C. Code Ann. § 24-21-550: Probation terms involving fines, costs, assessments, or restitution.

A probation term ordered to end upon the payment of fines, court costs, assessments, and restitution must continue until the clerk of court certifies in writing that all monies have been paid, or the probation term has expired, or the expiration of probation has been changed by a subsequent order.