SDCL § 3-12C-712: Compensation limits in Internal Revenue Code § 401(a)(17) .

Any compensation in excess of the limits established in § 401(a)(17) of the Internal Revenue Code shall be disregarded for purposes of contributions and benefit calculations under the system. Any benefit calculations for members subject to the limits established in § 401(a)(17) of the Internal Revenue Code but for whom the limitation on compensation did not apply before January 1, 2018, shall be based on unlimited compensation for credited service before January 1, 2018, and limited compensation for credited service as of January 1, 2018.