South Carolina Code of Laws — Title 12 (Taxation)
S.C. Code Ann. § 12-21-150 — Taxes imposed by chapter shall be in addition to other taxes
The license tax or taxes imposed by this chapter shall, except as otherwise expressly provided, be in addition to all other licenses and taxes levied by law, as a condition precedent to engaging in any business or doing any act taxable under this chapter.
Source: official text