South Carolina Code of Laws — Title 12 (Taxation)
S.C. Code Ann. § 12-28-950 — Payment of user fees by electronic fund transfer
All suppliers and bonded importers required to remit the motor fuel user fee shall remit the motor fuel user fees due by electronic fund transfer acceptable to the department, if required by regulation. The transfer or payment must be made on or before the date the user fee is due.
Source: official text