Will My Estate Planning Documents Be Recognized in Montana?

Yes. Montana has an explicit reciprocity statuteMont. Code Ann. § 50-9-111Verified Oct 15, 2026View source: a healthcare directive executed in another state is honored in Montana if it was valid where signed. Montana still operates under the Rights of the Terminally Ill Act (Mont. Code Ann. Title 50, ch. 9); it has not adopted the UHCDA. Per Mont. Code Ann. § 50-9-111, an out-of-state directive is valid if executed in a manner "substantially similar" to § 50-9-103 and in compliance with that state's law (place-of-execution test; both conditions required). The Montana document portability tool carries the recognition rule by document type.

Yes. Montana recognizes an out-of-state power of attorney under its Uniform Power of Attorney Act validity provisionMCA §§ 72-31-306, 72-31-307Verified Sep 18, 2026View source: a foreign POA is valid in Montana if it was valid under the law of the place of execution. Per MCA § 72-31-306(3), an out-of-state POA is valid in Montana if execution complied with the law of the jurisdiction that determines its meaning and effect (per § 72-31-307: the jurisdiction indicated in the POA, or if none, where executed). Also valid if it meets military POA requirements (10 U.S.C. 1044b). Photocopy or electronic copy has same effect as original (§ 72-31-306(4)). The Montana document portability tool carries the recognition rule by document type.

Yes, with one caveat. A trust is a private agreement governed by its own choice-of-law clause, not by any state's filing system, so a trust validly executed in another state has the same force in Montana for cash, accounts and personal property. The caveat is real estate: Montana property is deeded into the trust through a Montana deed before the trust controls it. The Montana document portability tool carries the recognition rule by document type.