(1) Upon every person who is an aluminum smelter engaging within this state in the business of manufacturing aluminum; as to such persons the amount of tax with respect to such business is, in the case of manufacturers, equal to the value of the product manufactured, or in the case of processors for hire, equal to the gross income of the business, multiplied by the rate of .2904 percent.
(2) Upon every person who is an aluminum smelter engaging within this state in the business of making sales at wholesale of aluminum manufactured by that person, as to such persons the amount of tax with respect to such business is equal to the gross proceeds of sales of the aluminum multiplied by the rate of .2904 percent.
(3) A person reporting under the tax rate provided in this section must file a complete annual tax performance report with the department under RCW 82.32.534.
(4) This section expires January 1, 2027.