There is imposed on any person engaging in business in this municipality for the privilege of engaging in business in this municipality an excise tax equal to one-fourth of one percent of the gross receipts reported or required to be reported by the person pursuant to the New Mexico Gross Receipts and Compensating Tax Act as it now exists or as in may be amended. The tax imposed under this chapter is pursuant to the Municipal Gross Receipts Tax Act as it now exists or as it may be amended and shall be known as the "municipal gross receipts tax." (Ord. 361 § 1, 1990)