N.D. Cent. Code § 57-06-09
If any company refuses or neglects to make the report required by this chapter, or refuses or neglects to furnish any information requested, the tax commissioner shall obtain the best information available on the facts necessary to be known in order to discharge the tax commissioner's duties with respect to the valuation and assessment of the property of the company. If any company fails to make the report required under this chapter on or before the first day of May of any year, the state board of equalization shall add twenty percent to the assessed value of the property of the company for that year. If any company fails to make the report required under this chapter on or before the first day of June of any year, the state board of equalization shall add an additional ten percent to the assessed value of the property of the company for that year. On or before the first day of June, for good cause shown, the tax commissioner may waive all or any part of the penalty that attached under this section.
N.D.C.C. § 57-06-09