We have here for decision this question: Is one who sells pre-cast septic tanks and component parts therefor at retail within North Carolina for installation within the State liable for sales taxes under Article V, Schedule E, of the Revenue Act, G.S. 105-164 through 105-187? The court below answered in the affirmative, and we approve.
G.S. 105-168 imposes a general sales tax of three per cent of gross sales upon the seller at retail of tangible personal property within the State of North Carolina. The levy is upon the seller for the privilege of engaging in business. By the terms of G.S. 105-167, this levy applies to every person engaged in the business of acquiring “any articles of commerce and selling same at retail,” and it extends to the sale of “any articles of commerce in any quantity ... for any use or purpose on the part of the purchaser other than for resale”; subject, however, to certain exemptions provided for in the Act. Therefore the plaintiff is liable for three per cent of its gross sales of septic tanks and component parts unless these articles come within the exemptions designated in *488the Act. The sales which are exempted are set forth in G.S. 105-169. Nowhere in this section, or in any other part of the Act, are septic tanks or component parts therefor exempted from the tax. Therefore the taxes here involved were properly assessed.
The plaintiff claims immunity from liability under the provisions of G.S. 105-187. This statute imposes a use tax on the purchaser of building materials, except with respect to materials expressly exempted. The plaintiff takes the position that septic tanks and component parts are building materials within the meaning of G.S. 105-187 and are subject to the use tax of three per cent imposed by this statute upon the purchaser, and that since the use tax is expressly levied against the purchaser, it follows that the sales of septic tanks and parts made by the plaintiff seller are not subject to the sales tax. We concur in the view that septic tanks and component parts are building materials, but we are constrained to reject the contention that such materials are not subject to the sales tax.
A study of the legislative history of G.S. 105-187 discloses a clear legislative intent to make out-of-state purchases of building materials, other than those expressly exempted, subject to the same burdens imposed by the sales tax on purchases within the State. The sales tax was first levied by Chapter 445, Public Laws of 1933. The original act is substantially the same as the present law, except there was no provision comparable to G.S. 105-187, and there was no general use tax. At that time none of our neighboring states levied a general sales tax. It is a matter of common knowledge that the imposition of our tax tended to encourage residents of this State to make purchases in adj oin-ing states in order to escape payment of the tax. The first step toward curbing out-of-state purchases made for the purpose of tax avoidance was the inclusion in the Revenue Act of 1937 of a section virtually identical with G.S. 105-187 (Section 427, Chapter 127, Public Laws of 1937).
It is significant that the Revenue Act of 1937 also classified sales of certain building materials as wholesale sales, subject to tax at the wholesale rate only. (Public Laws of 1937, Chapter 127, Section 404 (4)). These were the same materials which were exempted from Section 427 of the Act which imposed the use tax on building materials. This classification in the 1937 Revenue Act of certain sales of building materials as wholesale sales shows clearly that the Legislature contemplated that the retail sales tax applied to sales of all building materials other than those expressly classified as wholesale sales.
Moreover, it is noted that the original statutory forerunner of G.S. 105-187, as well as the present statute itself, contained a provision making the statute inapplicable to articles already subjected to the payment of the sales tax.
*489These phases of the legislative history of G.S. 105-187 indicate a positive legislative intent to impose a use tax of three per cent on purchases of unexempted building materials when and only when such materials have not been subj ected to the sales tax as against the seller. The conclusion is inescapable that under the facts here disclosed G.S. 105-187 may not be interpreted as exempting a North Carolina seller of building materials from the sales tax imposed by G.S. 105-168. Instead, it is manifest that G.S. 105-187 was intended to implement the provisions of G.S. 105-168 by curbing tax avoidance by means of out-of-state purchases of building materials. This interpretation is supported in principle by the decision in Supply Co. v. Maxwell, Comr. of Revenue, 212 N.C. 624, 194 S.E. 117. This case arose after the enactment of G.S. 105-187. Nevertheless, the Court held that the three per cent sales tax was properly assessed against the seller of plumbing and heating materials and supplies to contractors for installation in buildings.
For the reasons stated, the judgment below will be upheld.
Affirmed.