S.D. Codified Laws § 10-50-25

If the secretary of revenue finds that the collection of the tax imposed by this chapter would be facilitated thereby, the secretary may authorize any person, resident or located outside this state, engaged in the business of selling and shipping cigarettes into this state and purchasing at least seventy-five percent of the cigarettes from the manufacturers thereof, and who is a resident of any state authorizing by law the licensing of nonresidents, including residents of this state, to distribute cigarettes therein, upon complying with the requirements of the secretary of revenue, to affix or cause to be affixed the stamps required by this chapter on behalf of the purchasers of the cigarettes, who would otherwise be taxable therefor. The secretary of revenue may sell the stamps to such person as hereinbefore provided.