A. There shall be excepted and deducted from the total gross income upon which the license fee or tax is computed so much thereof as is derived from transactions in interstate or foreign commerce, or on any amount paid by a taxpayer to the United States, the state of Washington, or the city as excise taxes levied or imposed upon the sale or distribution of property or services.

B. Nothing in this chapter shall be construed as requiring a license, or the payment of a license fee or tax, or the doing of any act which would constitute an unlawful burden or interference in violation of the Constitution or laws of the United States, or which would not be consistent with the Constitution or laws of the state of Washington.

C. Any person subject to the payment of a license fee or tax under the provisions of any city ordinance, other than this chapter, on account of engaging in any activity for which he is liable to tax under this chapter, may deduct the amount of such fee or tax from the amount of fee or tax imposed by this chapter on account of such activity, and may further deduct therefrom any money paid to the city, pursuant to provisions in any franchise or contract conferring privileges in connection with the business of such person, but such person shall, nevertheless, in the manner provided for under this chapter, apply for and procure an occupation license. [Ord. 9533, 1986; Code 1980 at § 15.04.070].