S.C. Code Ann. § 9-1-1085

(A) As provided in Sections 9-1-1020 and 9-1-1050, the employer and employee contribution rates for the system beginning in Fiscal Year 2017-2018, expressed as a percentage of earnable compensation, are as follows: The employer contribution rate set out in this schedule includes contributions for participation in the incidental death benefit plan provided in Sections 9-1-1770 and 9-1-1775. The employer contribution rate for employers that do not participate in the incidental death benefit plan must be adjusted accordingly. (B) After June 30, 2027, the board may increase the percentage rate in employer contributions for the system on the basis of the actuarial valuation. An increase in the employer contribution rate adopted by the board pursuant to this section may not provide for an increase in an amount of more than one-half of one percent of earnable compensation in any one year. (C)(1) The unfunded actuarial accrued liability (UAAL) of the system as determined by the annual actuarial valuation must be amortized over a funding period that does not exceed the following schedule: (2) If the scheduled employer and employee contributions provided in subsection (A), or the rates last adopted by the board pursuant to subsection (B), are insufficient to meet the funding period set forth in item (1) for the applicable year, then the board shall increase the employer contribution rate as necessary to meet the funding period set forth in item (1). Such adjustments may be made without regard to the annual limit increase of one-half of one percent of earnable compensation provided pursuant to subsection (B). Participating employers must be notified of any contribution rate increase required by this item by July first of the fiscal year preceding the fiscal year in which the increase takes effect. (D)(1) After June 30, 2027, if the most recent annual actuarial valuation of the system shows a ratio of the actuarial value of system assets to the actuarial accrued liability of the system (the funded ratio) that is equal to or greater than eighty-five percent, then the board, effective on the following July first, may decrease the then current employer and employee contribution rates in equal amounts upon making a finding that the decrease will not result in a funded ratio of less than eighty-five percent. However, the employee contribution rate may not be less than one-half of the normal cost for the system and any contribution reduction allowed by this item after the employee contribution rate equals one-half of the normal cost must be a reduction in the employer contribution rate. (2) If contribution rates are decreased pursuant to item (1) of this subsection and the most recent annual actuarial valuation of the system shows a funded ratio of less than eighty-five percent, then effective on the following July first, and annually after that time as necessary, the board shall increase the then current employer and employee contribution rates in equal amounts not exceeding one-half of one percent of earnable compensation in any one year until a subsequent annual actuarial valuation of the system shows a funded ratio that is equal to or greater than eighty-five percent. However, the employee contribution rate may not exceed nine percent and any contribution increase required by this item after the employee contribution rate equals nine percent must be an employer contribution rate.