15-30-3311. Taxation of partners, shareholders, managers, and members. (1) A partner of a partnership that has Montana source income and a resident who is a partner of a partnership during any part of the tax year shall, in computing net income, include the partner's distributive share of partnership income, gain, loss, deduction, or credit or item of income, gain, loss, deduction, or credit as determined pursuant to section 704 of the Internal Revenue Code (26 U.S.C. 704) and shall furnish a copy of the partner's federal schedule of the partner's share of income, deductions, and credits when filing the Montana tax return.

(2) A shareholder of an S. corporation that has Montana source income and a resident who is a shareholder of an S. corporation during any part of the tax year shall, in computing net income, include the shareholder's pro rata share of separately and nonseparately stated S. corporation income, loss, deduction, or credit as determined pursuant to sections 1366 and 1377 of the Internal Revenue Code (26 U.S.C. 1366 and 1377) and shall furnish a copy of the shareholder's federal schedule of the shareholder's share of income, deductions, and credits when filing the Montana tax return.

(3) A partner, shareholder, manager, member, or other owner of a disregarded entity that has Montana source income and a resident who is a partner, shareholder, manager, member, or other owner of a disregarded entity during any part of the tax year shall, in computing net income, include the disregarded entity's income, gain, loss, deduction, or credit or item of income, gain, loss, deduction, or credit.