S.D. Codified Laws § 3-13-61 (2026)
Notwithstanding the provisions of §§ 3-13-58 to 3-13-60, inclusive, or the provisions of United States 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 , § 10.