S.C. Code § 8-23-70
The Deferred Compensation Program established pursuant to this chapter shall be in addition to retirement, pension, or benefit systems established by the State, federal government, or political subdivision and no deferral of income under the Deferred Compensation Program shall affect a reduction of any retirement, pension, social security, or other benefit provided by law. Any sum deferred under the Deferred Compensation Program shall not be subject to taxation until distribution is actually made to the employee.
Nothing contained in this chapter shall be construed to prohibit counties, municipalities, school districts, and other political subdivisions of the State and their employees from participation in deferred compensation plans or programs offered independently of the Board of Directors of the South Carolina Public Employee Benefit Authority by building and loan or savings and loan associations, banks, trust companies, and credit unions chartered by the state or federal governments, and all such political subdivisions shall be empowered with such contractual authority as may be necessary or incident to such participation; provided, however, that (a) such deferred compensation plans or programs shall comply with applicable federal income tax law in providing income deferral, (b) all deferred amounts shall be held in accounts, certificates of deposit, or other forms of savings vehicles which are insured by the Federal Savings and Loan Insurance Corporation in the case of savings and loan associations, the Federal Deposit Insurance Corporation in the case of commercial banks, and the National Credit Union Administration in the case of credit unions.
S.C. Code § 8-23-70