Montana Title 72. Estates, Trusts, and Fiduciary Relationships § 72-16-603. Tax--how apportioned

(1) Except as provided in subsection (3) and unless the will or governing instrument otherwise provides, the tax must be apportioned among all persons interested in the estate. The apportionment is to be made in the proportion that the value of the interest of each person interested in the estate bears to the total value of the interests of all persons interested in the estate. The values used in determining the tax are to be used for that purpose.

(2) If the decedent's will or governing instrument directs a method of apportionment of tax different from the method described in this part, the method described in the will or governing instrument controls.

(3) If the liabilities of persons interested in the estate as described in this part differ from those that result under the federal estate tax law, the liabilities imposed by the federal law control and the balance of this part applies as if the resulting liabilities had been prescribed in this part.