N.D. Cent. Code § 21-02-02
Political subdivisions may borrow against revenues through the issuance of certificates of indebtedness. A certificate of indebtedness consists of an agreement on the part of a political subdivision to pay a stated sum on or before a specified date, together with interest thereon at a rate or rates resulting in an average annual net interest cost not exceeding twelve percent if the certificate is sold privately. There is no interest rate ceiling on a certificate sold at public sale or to the state of North Dakota or any of its agencies or instrumentalities. The certificate must be signed on behalf of the political subdivision by its president or chairman, or equivalent officer, and also by its auditor, business manager or secretary, or equivalent officer, and must be payable from revenues. A certificate of indebtedness issued wholly or in part against revenues that consist of levied and uncollected taxes is a general obligation of the issuing political subdivision to the extent of the levied and uncollected taxes.
N.D.C.C. § 21-02-02