If a marriage is determined to be void, an agreement that would otherwise have been a premarital agreement is enforceable only to the extent necessary to avoid an inequitable result.
S.D. Codified Laws § 25-2-22
Enforcement--Void marriage
Known as the Uniform Premarital Agreement Act
The act spans §§ 25–25 (25 sections).
Source: SL 1989, ch 216, § 7.
Official source: South Dakota Legislature. Reproduced from public-domain South Dakota statutes; confirm against the official source for the current text. Not legal advice.