N.D. Cent. Code § 57-05-11
It is unlawful for the commissioner, or any person having an administrative duty under this chapter, to divulge or to make known in any manner the business affairs, operations, or information obtained by an investigation of records and equipment of any person or corporation visited or examined in the discharge of official duty, or the amount or sources of income, profits, losses, expenditures, or any particulars set forth or disclosed in any report, or to permit any report or copy or any book containing any abstract of particulars to be seen or examined by any person except as provided by law. Notwithstanding the provisions of this section, hearings held by the state board of equalization under chapter 57-05 or 57-13 must be open to the public under section 44-04-19. The commissioner may authorize examination of such reports by other state officers and may furnish to the tax officials of another state, the multistate tax commission, or the United States any information contained in the reports and related schedules and documents filed under this chapter, and in the report of an audit or investigation made with respect to an audit, provided that that information be furnished solely for tax purposes. The multistate tax commission may make that information available to the tax officials of any other state and the United States for tax purposes. This section applies only to a class II and class III railroad as defined by the surface transportation board in 49 Code of Federal Regulations, part 1201.
N.D.C.C. § 57-05-11