S.D. Codified Laws § 10-46A-4
For the purpose of this chapter, the term, gross receipts, means the amount received directly or indirectly in money, credits, property, or other money's worth in consideration of the performance of realty improvement contracts within this state, without any deduction on account of the cost of the property sold, the cost of materials used, the cost of services or labor purchased, amounts paid for interest or discounts or any other expenses whatsoever, nor may any deduction be allowed for losses. Gross receipts include those materials furnished to the prime contractor or subcontractor by the owner or the lessee of the realty improvement. For the purposes of measuring the tax imposed by this chapter, gross receipts include the greater of the cost or fair market value of materials used by a contractor or subcontractor in the performance of a contract regardless of whether the contractor or subcontractor owns or furnishes the materials.
SDCL 10-46A-4