Municipalities shall not levy, assess, collect, or charge any additional tax upon any carrier of persons or property for hire, except as provided by law. However, no carrier shall be exempt hereby from paying a parking, curb, or ad valorem property tax levied by any municipality.
Additional Tax By Municipalities Prohibited -- Exceptions
Mont. Code Ann. § 61-10-215, under Gross Vehicle Weight Licensing Requirements.
Mont. Code Ann. § 61-10-215