Notwithstanding the provisions of any other law, the income from bonds or other obligations issued by any state or political subdivision of a state are included in gross and net income for purposes of the corporate income tax.
Mont. Code Ann. § 15-31-115, under Corporate Income Tax Rate and Return.
Mont. Code Ann. § 15-31-115
Notwithstanding the provisions of any other law, the income from bonds or other obligations issued by any state or political subdivision of a state are included in gross and net income for purposes of the corporate income tax.