The North Dakota Office of State Tax Commissioner
600 E. Boulevard Ave., Dept 127
Bismarck, ND 58505-0599
Did you receive a letter or other document from the Office of State Tax Commissioner? If so, please contact the number identified on that letter or document. The direct contact phone number is in the signature portion or in the body of the letter towards the end of the document.
Web address for additional contact numbers http://www.nd.gov/tax/misc/contacts.html