S.D. Codified Laws § 58-30-129

If the contract provides for a sharing of interim profits by the managing general agent, and the managing general agent may determine the amount of the interim profits by establishing loss reserves or controlling claim payments, or in any other manner, interim profits may not be paid to the managing general agent until one year after they are earned on property insurance business and five years after they are earned on casualty business and not until the profits have been verified pursuant to § 58-30-131.