SDCL § 58-25-13: Deviations, rebates, and discounts prohibited.

Every insurer shall hold to the rates or premiums as approved by the director and may not deviate therefrom nor allow to or for the account of any insured a rebate or discount on the rates or premiums payable. As compensation for procuring business, an insurer may pay or allow a commission to any licensed insurance producer of the insurer.