S.D. Codified Laws § 21-18-1
In any action or small claims proceeding to recover damages founded upon contract, express or implied, or pursuant to judgment or decree, any creditor is entitled to proceed by garnishment in any court having jurisdiction of the subject of the action, against any person, as defined in § 15-7-1, including the state and any municipal or public corporation, and including any corporation organized or authorized to be organized by or under the laws of any state or of the United States, which has the power to sue or be sued who shall be indebted to or have any property, real or personal, in its possession or under its control belonging to such creditor's debtor, in the cases, upon the conditions, and in the manner prescribed in this chapter.
SDCL 21-18-1