S.C. Code Ann. § 36-3-122 – Accrual of cause of action

(1) A cause of action against a maker or an acceptor accrues
1. (a) in the case of a time instrument on the day after maturity;
2. (b) in the case of a demand instrument upon its date or, if no date is stated, on the date of issue.
(2) A cause of action against the obligor of a demand or time certificate of deposit accrues upon demand, but demand on a time certificate may not be made until on or after the date of maturity.
(3) A cause of action against a drawer of a draft or an indorser of an instrument accrues upon demand following dishonor of the instrument. Notice of dishonor is a demand.
(4) Unless an instrument provides otherwise, interest runs at the rate provided by law for a judgment
1. (a) in the case of a maker, acceptor or other primary obligor of a demand instrument, from the date of demand;
2. (b) in all other cases from the date of accrual of the cause of action.
  PART 2. TRANSFER AND NEGOTIATION