S.C. Code Ann. § 12-28-965
The tax that a supplier, importer, or fuel vendor collects on the sale of taxable motor fuel belongs to the State. These persons shall hold the money in trust for the State and for payment to the department as provided in this chapter. For a corporation or partnership, each officer, employee, or member of the employer who is in that capacity is under a duty to collect the tax and is personally liable for the tax, penalty, and interest.