After the filing with the secretary of state of a charter approved in reasonable conformity with this chapter, the county and its citizens may, if included in the charter and implemented through ordinances:
After December 31, 2005, any portion of a charter or any portion of an ordinance or act of a governing body of a home rule county passed pursuant to a charter which does not conform to the requirements of this subsection is invalid to the extent that it does not conform. The invalidity of a portion of a charter or ordinance or act of a governing body of a home rule county because it does not conform to this subsection does not affect the validity of any other portion of the charter or ordinance or act of a governing body of a home rule county or the eligibility for a refund under section 57-01-02.1. Any taxes imposed under this chapter on farm machinery, farm irrigation equipment, and farm machinery repair parts used exclusively for agricultural purposes, or on alcoholic beverages, which were in effect on December 31, 2005, become gross receipts taxes after December 31, 2005. Ordinances enacted after August 1, 2017, may not allow for the collection and levy of any tax not otherwise specified under this section.
The people of all counties coming within this chapter have the full right of self-government in all matters within the powers enumerated in this chapter. The statutes of this state, so far as applicable, continue to apply to counties, except as superseded by the charters of the counties or by ordinances passed pursuant to the charters.
N.D.C.C. § 11-09.1-05