S.D. Codified Laws § 10-46-67
The secretary of revenue may authorize a retailer to use a direct payment permit if the retailer purchases goods or services subject to the tax imposed by chapter 10-45. Applicants for a direct payment permit shall apply in writing to the secretary. A retailer may appeal the denial of a direct payment permit or contest a revocation of a direct payment permit pursuant to chapters 1-26 and 1-26D. For purposes of this section, the term, direct payment permit, means a permit issued by the department that allows a holder of the permit to accrue and pay the taxes imposed by chapter 10-45 directly to the department. A retailer that makes a sale to a direct payment permit holder has no liability for sales tax on such sale if the retailer has written evidence of the sale. Such written evidence shall clearly indicate the name of the buyer, the product or service purchased, and the amount of the purchase. The secretary of revenue may promulgate rules pursuant to chapter 1-26 concerning the administration and use of a direct payment permit.
SDCL 10-46-67