Section 7-16A-4 - Special fuel inventory tax; imposition of tax; date payment of tax dueA. A "special fuel inventory tax" is imposed measured by the quantity of gallons of special fuel in the possession of a supplier or bulk storage user on the day in which an increase in the special fuel excise tax rate is effective. The taxable event is the existence of an inventory in the possession of a supplier or bulk storage user on the day prior to the day in which an increase in the special fuel excise tax rate is effective. The rate of the special fuel inventory tax applicable to each gallon of special fuel held in inventory by a supplier or bulk storage use, as provided in Section 5 [7-16A-5 NMSA 1978] of the Special Fuels Supplier Tax Act, shall be the difference between the special fuel excise tax rate imposed on the day prior to the day in which the special fuel excise tax rate is increased, subtracted from the special fuel excise tax rate imposed on the day in which the special fuel excise tax rate increase is effective, expressed in cents per gallon. B. The special fuel inventory tax is to be paid to the department on or before the twenty-fifth day of the month following the month in which the taxable event occurs.