Mont. Code Ann. § 7-3-1304

There is in the department of finance a division of audit and accounts, of which the director of finance is the head. As head of the office, the director is charged with keeping the books of financial account for all departments and offices of the municipality, and whenever practicable, the books and accounts must be kept in the office of the division of audit and accounts. A report must be made daily to the division of audit and accounts by each department and office, showing the receipt and disposition of all money.