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Office of State Tax Commissioner, Ryan Rauschenberger : State of North Dakota
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Frequently Asked Questions
Miscellaneous Tax Forms and Publications

600 E. Boulevard Ave.
  Bismarck, ND 58505-0599
  701.328.7088 phone
  701.328.3700 fax
  877.328.7088 toll-free

Corporation Income Tax Forms

Other Forms

  • Application for Extension of Time to File Return An extension may be obtained if you do not have a federal extension of time to file, or if you need an additional state extension to file your return beyond six months. If you need this additional extension, please contact our office at (701) 328-1249.
  • Business Codes (NAICS)
  • 2014 Form 40-ES - (fill-in pdf) - Estimated Tax Form
  • Form 40-X - (fill-in pdf) - Amended Corporation Income Tax Return
  • Form 500 Authorization To Disclose Information & Designation Of Representative (Limited power of attorney) (fill-in pdf)
    • Important note: North Dakota does not accept nor recognize federal Form 2848, Power of Attorney and Declaration of Representative, for North Dakota tax purposes. North Dakota Form 500 should be used to authorize the disclosure of confidential tax information or to designate a representative for North Dakota tax purposes.
  • Renaissance Zone Forms and Publications
  • Nexus Questionnaire - (fill-in pdf)
  • Application for Income Tax Exemption - (fill-in pdf)
  • Business Incentive Agreement - (fill-in pdf)
  • Request For Copies Of Tax Returns- (fill-in pdf)

If you would like us to mail the forms and instructions to you, use our information request form.


A copy of a previously filed state income tax return may be obtained by submitting a written request. The request must contain the following:

  1. Name and current address of taxpayer;
  2. Taxpayer's social security number or federal employer identification number, if applicable;
  3. Description of type of tax return (e.g., Form ND-1);
  4. Tax year for which copy of return is desired; and,
  5. Taxpayer's signature. The written request may be mailed to the above address or it may be faxed to (701)328-3700.

You can also use our Copy Request Form - (283 fill-in-pdf).

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