S.D. Codified Laws § 58-34-15 (2026)
In addition to surplus required to be maintained under § 58-34-14, a domestic reciprocal insurer formed after June 30, 1966, shall have, when first authorized to transact insurance, expendable surplus equal to not less than one-half of the minimum amount of surplus required to be maintained.
Source: SL 1966, ch 111 , ch 19, § 8 (3).