Mont. Code Ann. § 7-14-4613

When any city or the commission created for it becomes authorized to transact business and exercise the powers of a parking commission, the legislative body of the city, subject to its fiscal law, may, at that time and from time to time thereafter, make an estimate of the amount of money required for administrative purposes of the commission and may appropriate such amounts to the commission as it deems necessary, subject to such conditions as the legislative body may prescribe.