S.D. Codified Laws § 55-1-31 (2026)
Unless otherwise provided in the trust, if the settlor's spouse is named as beneficiary, the settlor's spouse is still living, and the trust is classified as a support trust, then the trustee shall consider the resources of the settlor's spouse, including the settlor's obligation of support, prior to making a distribution. In all other cases, unless otherwise provided in the trust, the trustee need not consider the beneficiary's resources in determining whether a distribution should be made.
Source: SL 2007, ch 280 , § 8; SL 2009, ch 252 , § 5; SL 2011, ch 212 , § 33.