Mont. Code Ann. § 37-61-212

If any practicing attorney or counselor at law shall fail, neglect, or refuse to pay to the clerk of the supreme court the license tax imposed by this chapter for a period of 30 days after the same is due and payable, it shall be the duty of the clerk of the supreme court to take such action for the collection of the same as is required of the county treasurer in cases of nonpayment of other licenses, as provided by 7-21-2116, and the provisions of 7-21-2115 through 7-21-2117 shall control in said proceedings so far as the same are applicable thereto.