S.D. Codified Laws § 55-11-5.1
Return of payments required on revocation under contract with guaranteed price
A person who revokes a revocable trust under a contract providing a guaranteed price is entitled to receive one hundred percent of all money paid into trust under the contract together with one hundred percent of accrued interest unless a greater amount is specified in the contract.
Source: SL 1981, ch 355, § 3; SL 1986, ch 408, § 4.