S.D. Codified Laws § 3-13A-23.4 (2026)
Notwithstanding the provisions of §§ 3-13A-23 to 3-13A-23.1, inclusive, or the provisions of the treasury regulations, benefit options may continue so long as the option satisfies § 401(a)(9) of the Internal Revenue Code based on a reasonable and good faith interpretation of that section.
Source: SL 2021, ch 28 , § 17.