Mont. Code Ann. § 32-1-213

Each bank, trust company, or investment company under the supervision of the department shall pay to the department fees set by the department by rule to recover all of the costs of administering the program for the supervision of banks, trust companies, and investment companies. The department may amend the rule setting the fees on or before June 1 and December 1 of each year. The funds collected must be deposited in the state special revenue fund for the use of the department in its examination function.