Will requirements in Montana

Who can make a will in Montana

Montana keeps the starting line short: you need to be at least 18, and you need to be of sound mind at the moment you sign. The state’s own probate code ties that capacity to whether you understand what you own, who your family is, and what your will actually does with what you leave them, not to any diagnosis or paperwork beyond the will itself.

Signing your will in Montana

1. 1You sign

   You sign your will, or direct someone else to sign it for you, in your conscious presence, the phrase Montana’s own execution statute uses for this moment.

2. 2Two witnesses sign

   Two witnesses, having watched you sign or heard you acknowledge the signature or the will as your own, add their own signatures within a reasonable time afterward. Choose people who inherit nothing under the will; a witness with no stake in the outcome keeps every gift out of reach of a later challenge.

3. 3The affidavit

   Optional, and common: the self-proving affidavit. It is its own document, sworn by you and your witnesses before a notary any time after the will itself is signed, and it is the only place in this whole process a notary appears. Montana does not let a notary stand in for your witnesses the way Colorado or North Dakota does. The two witnesses are never optional here.

Handwritten and electronic wills

Montana recognizes a holographic will, one written and signed entirely in your own hand, with no witnesses required for that particular form. The signature and the material parts of it have to genuinely be your handwriting; the three-step ceremony above simply does not apply to it. It is a real option, and also the version most likely to confuse a probate court later, since nothing about a fully handwritten will gets checked while you are alive to explain what you meant.

Montana has not authorized electronic wills. Whatever you draft on a screen still has to become a signed paper document before a court will accept it. That is exactly how Myend’s Last Will works everywhere: you build the will online, then print and sign it with your witnesses, on paper, the form every state accepts.

Property and your spouse

Montana is a common-law property state, so whatever you hold in your own name is otherwise yours to leave however you choose. Marriage does not automatically hand your spouse half of anything, the way it would in a community-property state. What Montana gives a spouse instead is an elective share, a floor a will alone cannot go below, and in 2019 the Legislature replaced the state’s older version of that formula with one built on the modern Uniform Probate Code (MCA §§ 72-2-232, 72-2-233).

The current version runs in two steps rather than one. First, the length of the marriage sets an elective-share percentage on a schedule that starts at 3 percent for a marriage under a year and climbs as the marriage does, reaching 100 percent once a marriage passes fifteen years. That percentage is applied to the augmented estate, roughly everything you own plus certain property that passed outside your will, to produce what the statute calls the marital-property portion. Second, your surviving spouse’s actual claim is half of that portion, not the whole of it. Multiply the two steps together and the amount a will alone cannot erase runs from about 1.5 percent of the augmented estate in the earliest year of marriage up to 50 percent once the marriage reaches fifteen years (MCA §§ 72-2-232, 72-2-233). You can always leave your spouse more than the formula produces. A will alone cannot leave them less.

Your executor

Montana’s own probate code calls this role the personal representative; everyday usage, including the rest of this page, still calls it executor. Whatever the label, Montana keeps who can serve refreshingly open: you can name almost any capable adult, in Montana or anywhere else, since the only grounds for disqualifying someone are being under 18 or a court finding them unsuitable for the job (MCA § 72-3-501). Nothing in that list checks an address, which is a real point of difference from states that require an out-of-state executor to appoint a local agent just to receive paperwork on their behalf. A Montana court can still order a bond, but only if the will itself asks for one or the court decides the estate needs that protection, never because of where the executor lives (MCA § 72-3-513). New to the role? Start with what an executor actually does.

If someone challenges the will

Montana enforces no-contest clauses, the provision that cuts off a gift to anyone who challenges the will and loses, but the statute itself builds in a limit: a clause like that is unenforceable against a challenge brought with probable cause (MCA § 72-2-537). Probable cause means the person filing had a reasonable basis for believing the will was invalid, real evidence of incapacity or undue influence, for instance, not just a hunch or a grudge. The clause can still discourage a challenge with nothing behind it. It cannot be used to punish someone for asking a fair question with real grounds.

If you do not make a will

Skip the will, and Montana’s own intestacy statute decides who inherits, working through a fixed list of relatives rather than anything you actually wanted. It has no entry for an unmarried partner, a friend who mattered more than any cousin on that list, or a stepchild you raised but never formally adopted. A short, valid will is the only way to put your own names in those places instead of the state’s. See what happens if you die without a will.

What is different about Montana

Montana asks almost nothing of the will itself, and quite a lot of the math behind a spouse’s share of it.

Start with how easy the front door is. Montana takes your handwriting as a complete will on its own, no witnesses required for that form. It never asks for a notary to make an ordinary will valid, only for an optional affidavit that speeds up probate later. And it does not care where your executor lives; there is no local agent to appoint, no address-based ground anywhere in the statute that lists who cannot serve. Very little about actually making a Montana will is designed to trip you up.

Then there is the spousal share, which is anything but simple. In 2019, Montana’s Legislature threw out the state’s older elective-share formula and replaced it with the modern Uniform Probate Code version, a genuine rewrite, not a patch. What it put in place is not a single fraction that climbs with the years. It is two multiplications stacked on top of each other: a percentage set by how long you were married, applied to the augmented estate to produce a marital-property portion, and then your spouse’s actual claim is half of that portion, not the whole of it (MCA §§ 72-2-232, 72-2-233). Work through the arithmetic and the practical result still lands where similar states land, a small slice in the first year of marriage, half of the estate at fifteen years, but Montana is one of the few places that gets there through an explicit multiplication rather than a single number read off a chart.

One more quiet fact worth knowing: whichever kind of will you leave, or none at all, it is Montana’s district courts that have jurisdiction over the estate once you are gone, with the more routine, uncontested filings usually handled by the clerk of court rather than a judge (MCA § 72-1-103). The forgiving front door and the precise spousal formula both end up in the same courthouse.

Common questions

Sources and review