Rule 42.23.101 - EXTENT OF TAX LIABILITY(1) Every corporation engaged in business in Montana must annually pay the statutory percentage of its total net income received from all sources within the state during the preceding year. The tax may not be less than the specified minimum, which must be paid even though a net loss was sustained during the reporting period. However, no tax is assessable against a corporation which was not engaged in business within the state during the reporting period.Mont. Admin. r. 42.23.101
Sec. 15-31-501, MCA; IMP, Sec. 15-31-101 and 15-31-121, MCA;