N.D. Cent. Code § 57-51-03
The payment of the taxes herein imposed must be in full, and in lieu of all ad valorem taxes by the state, counties, cities, towns, townships, school districts, and other municipalities, upon any property rights attached to or inherent in the right to producing oil or gas, upon producing oil or gas leases, upon machinery, appliances, and equipment used in and around any well producing oil or gas and actually used in the operation of such well, and also upon oil and gas produced in the state upon which gross production taxes have been paid, and upon any investment in any such property. Any interest in the land, other than that herein enumerated, must be assessed and taxed as other property within the taxing district in which such property is situated. It is expressly provided that the gross production tax is not in lieu of income taxes nor excise taxes upon the sale of oil and gas products at retail.
N.D.C.C. § 57-51-03