N.D. Cent. Code § 57-15-27
The governing body of any county, city, park district, or municipality, other than a school district, which is authorized to levy taxes may include in its budget an item to be known as the "interim fund" which must be carried over to the next ensuing fiscal year to meet the cash requirements of all funds or purposes to which the credit of the municipality may be legally extended, for that portion of such fiscal year prior to the receipt of taxes therein. In no case may the interim fund be in excess of the amount reasonably required to finance the municipality for the first nine months of the next ensuing fiscal year. The interim fund may not be in excess of three-fourths of the current annual appropriation for all purposes other than debt retirement purposes and appropriations financed from bond sources.
N.D.C.C. § 57-15-27