S.D. Codified Laws § 55-18-21 (2026)
Without diminishing the powers of a trustee over the affairs of the trust or trust property, a trustee may not bind a beneficiary of the trustee's trust except as provided in subdivisions 55-18-9(5), (9), (11), and (16).
Source: SL 2017, ch 208 , § 21; SL 2019, ch 209 , § 10.