S.D. Codified Laws § 10-50-8
The impact of the tax levied by this chapter is hereby declared to be on the vendee, user, consumer, or possessor of cigarettes or tobacco products in this state and when said tax is paid by any other person such payment shall be considered as an advance payment and shall thereafter be added to the price of the cigarettes or tobacco products and recovered from the ultimate consumer or user. In making a sale of cigarettes or tobacco products in this state a distributor may separately state and show upon the invoice covering such sale the amount of tax on the cigarettes or tobacco products sold. The provisions of this section shall in no way affect the method of collection of such tax on cigarettes as now provided by existing law.
SDCL 10-50-8