S.D. Codified Laws § 58-15-15.14

Premium is the consideration for insurance by whatever name called. Any assessment, or any membership, policy, survey, inspection, service, or similar fee or other charge in consideration for an insurance contract is deemed part of the premium. For a private placement policy, with the consent of the insurer, premium may be in the form of assets to be held by the insurer in a separate account, as long as the fair value of the assets are independently verified at the time of receipt by the insurer.