Neb. Rev. Stat. § 59-1505

(1) Cost to the wholesaler shall mean the basic cost of cigarettes to the wholesaler plus the cost of doing business by the wholesaler, as evidenced by the standards and methods of accounting regularly employed by him or her in his or her allocation of overhead costs and expenses, paid or incurred, and must include, without limitation, labor costs, including salaries of executives and officers, rent, depreciation, selling costs, maintenance of equipment, delivery costs, all types of licenses, taxes, insurance, and advertising. (2) In the absence of the filing with the division of satisfactory proof of a lesser or higher cost of doing business by the wholesaler making the sale, the cost of doing business by the wholesaler shall be presumed to be four and three-quarters percent of the basic cost of cigarettes to the wholesaler.