S.C. Code Ann. § 51-7-60: Terms of revenue obligations.

Any such obligations may be issued in one or more series, may bear such date or dates, mature at such time or times, not exceeding forty years from their respective dates, bear interest at such rate or rates, not to exceed six per cent per annum, payable semiannually, be in such denominations and in such form, be executed in such manner and be payable in such medium of payment at such place or places as such resolution may provide.