Mont. Code § 15-24-801
Every savings and loan association subject to regulation under Title 32, chapter 2, must be assessed for and pay taxes upon all real and personal property owned by the association. The secretary of an association shall furnish to the department, within 5 days after demand, a condensed statement, verified by oath, of the resources and liabilities of the association as disclosed by its books at noon on January 1 in each year. If the secretary fails to make the statement, the department shall immediately obtain the information from any other available source, and for this purpose it shall have access to the books of the association. The department shall make an assessment of the real estate and personal property owned by the association in a manner that is as fair and equitable as it may be able to make from the best information available, or the department may, for the purpose of the assessment, adopt the figures disclosed by any prior report made by the association to any state or federal officer under a state or federal law. A person required by this section to make the statement provided for in this section who fails to furnish it is guilty of a misdemeanor.
§ 15-24-801, MCA