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Montana Ancillary Probate
Support GuideMontana16 min read

Montana Ancillary Probate

Montana ancillary probate: an out-of-state personal representative files with the district court where the property sits and gets a clerk's certificate.

By Settled Editorial

Montana handles most out-of-state estates with a registration rather than a second probate case. Under MCA 72-4-303, the personal representative (the executor) appointed in the decedent's home state files four things with a Montana district court in a county where the decedent's property sits: an authenticated copy of the appointment, any official bond, an inventory of the Montana property, and a sworn affidavit. The Clerk of District Court then issues a certificate showing the representative has registered.

Two families land on this page. One lives in another state and just learned the estate includes a Montana ranch, cabin, mineral interest, or bank account. The other settled a Montana estate and found land somewhere else, which that state's court handles under its own rules. Montana's half of both stories sits in Title 72, Chapter 4 of the Montana Code Annotated 2025. If no estate is open anywhere yet, start with how Montana probate works. This page explains Montana law for a broad audience, so check your own facts with a licensed Montana attorney or the clerk holding the file.

The Montana stepWhat it takesStatute
Registration with the district courtAuthenticated appointment and bond, an inventory, and an affidavit, filed in a county holding property72-4-303
Clerk's certificateIssued once the filing is complete72-4-303(2)
Powers over Montana assetsThose of a local personal representative, after the authenticated copies are filed72-4-309, 72-4-310
Payment by a Montana debtor or bank60 days after death, proof of appointment plus an affidavit, no Montana case pending72-4-306
Full local administrationVenue in any county where the decedent's property was located at death72-3-112(1)(b)

Why Montana Has a Say at All

A court in one state cannot move a deed in another. A probate judge in Spokane has no power over a deed recorded in Flathead County, and a Montana district court has none over land in Idaho. That boundary is the reason ancillary administration exists.

Here is what usually brings a family to this page:

  • Montana real estate in the decedent's sole name, from a Gallatin County condo to a Custer County ranch
  • Mineral, oil and gas royalty, or water rights tied to Montana land
  • An account at a Montana bank or credit union
  • Tangible property in a Montana storage unit or second home

MCA 72-3-112(4) answers the harder location questions. A debt, other than one evidenced by investment or commercial paper, is located where the debtor lives, or at the principal office of a debtor that is not an individual. Commercial paper, investment paper, and other instruments are located where the instrument is. An interest in property held in trust is located where the trustee may be sued.

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Registering With a Montana District Court, Step by Step

Here is the sequence when the home-state case is already open.

  1. Get the home-state appointment in place. Every Montana step rests on the domiciliary appointment, so it has to exist and stay in force.
  2. Order authenticated copies. MCA 72-4-303(1)(a) asks for an authenticated copy of the appointment and of any official bond given. Authenticated means the issuing court's certificate and seal, not a plain photocopy.
  3. Inspect and list the Montana property. MCA 72-4-303(1)(b) requires an inventory of the Montana property carrying the details MCA 72-3-607 prescribes, which means each item with reasonable detail, its fair market value at the date of death, and any encumbrance. MCA 72-4-305 makes anyone holding the property let you inspect and appraise it for that inventory, once you show proof of appointment and an affidavit stating the date of death, that no Montana administration is pending, and that you are entitled to inspect.
  4. Sign the affidavit. MCA 72-4-303(1)(c) needs two statements: the date of death, and that no local administration or application or petition for one is pending in Montana.
  5. File in the right county and pay the fee. The filing goes to a district court in a county where property belonging to the decedent is located. The court's fee schedule lists Foreign Probate - With certificate at $85, and MCA 25-1-201(1)(n) sets the clerk's base fee for this exact filing at $55.
  6. Collect the certificate. Under MCA 72-4-303(2), the clerk issues a certificate identifying you as registered with the district court and stating the decedent's name and date of death.

The statute names documents rather than a numbered form, so ask the clerk how the county wants the packet assembled. Our Montana Clerks of District Court directory lists the address and phone for all 56 counties.

What Registration Buys

MCA 72-4-310 is short and carries the weight. A domiciliary foreign personal representative who has complied with MCA 72-4-309 may exercise, as to assets in Montana, all powers of a local personal representative, and may bring actions and proceedings here subject to any conditions placed on nonresident parties generally. Section 72-4-309 is the authenticated-copy filing of the appointment and any official bond, allowed only while no local administration or application for one is pending.

Montana writes the same step twice. Section 72-4-309 names two documents, while 72-4-303(1) says a representative who wishes to use the 72-4-310 powers "shall file" the fuller package with the inventory and affidavit. File the 72-4-303 package and you satisfy both sections, and you leave with the clerk's certificate that Montana banks and title companies can check.

There is a jurisdictional price. MCA 72-4-201 says you submit personally to Montana courts in any proceeding relating to the estate by filing authenticated copies under 72-4-309, by collecting money or property under 72-4-306, or by any act here that would have given Montana jurisdiction over you as an individual. Jurisdiction from collecting under 72-4-306 is limited to the money or value collected. Under MCA 72-4-203, service can arrive by registered or certified mail, and you get at least 30 days to appear or respond.

What Ends Those Powers

MCA 72-4-311 sets four rules:

  • The powers under 72-4-306 and 72-4-310 exist only while no administration, and no application for one, is pending in Montana.
  • An application or petition for local administration ends the power to act under 72-4-310. The local court may still allow limited powers to preserve the estate.
  • A person who relied on the foreign representative's powers before receiving actual notice of a pending local case is not prejudiced by it.
  • The local personal representative takes on the duties and obligations that built up while the foreign representative acted, and may be substituted in any pending Montana action.

Collecting Montana Accounts Without Opening a Case

MCA 72-4-306 lets a Montana debtor or holder pay money or hand over personal property, including stock and other instruments, to the home-state representative once 60 days have passed since the death. The holder needs proof of appointment and an affidavit stating the date of death, that no local administration or application for one is pending in Montana, and that the representative is entitled to payment or delivery.

Here is the Montana wrinkle. MCA 72-4-307 releases a payer who acts in good faith "on the basis of the certificate of the clerk of court and the certificate of the department of revenue." The clerk's certificate is the one 72-4-303 produces, and 72-4-303(1) names receiving 72-4-306 payments as a reason to register. So expect a careful bank to ask for the certificate. The Department of Revenue half no longer applies: the Department says Montana no longer requires a certificate or consent from it to close probate or to transfer stocks, bonds, or other securities, and its inheritance tax does not apply to any death after January 1, 2001.

MCA 72-4-308 is the brake. Once a resident creditor tells the holder not to pay, the holder may not pay or deliver under 72-4-306. MCA 72-4-101(3) defines a resident creditor as a person domiciled in or doing business in Montana who is or could be a claimant against the estate of a nonresident decedent.

When a Full Montana Case Is the Better Route

Open a local administration when the will is contested, when a resident creditor has blocked the shortcut, when nobody has been appointed at home, or when a buyer wants Montana letters in the file. MCA 72-4-401 says Montana's probate code then governs the Montana proceedings for probate of the will and for appointment, removal, supervision, and discharge of the local personal representative. The court's fee schedule lists the petition at $100.

Five rules matter more to an out-of-state family than to anyone else.

Venue follows the property. MCA 72-3-112(1)(b) puts the first proceeding for a decedent not domiciled in Montana in any county where the decedent's property was located at the time of death. Later proceedings stay with the court that heard the first one.

The home-state executor is first in line. MCA 72-3-506 gives a personal representative appointed by a court of the decedent's domicile priority over all other persons, unless the will names different people for Montana and the home state. That representative may nominate someone else, who takes the same priority.

A will already probated elsewhere gets an informal path. MCA 72-3-213(3) lets any interested person ask for informal probate of that will at any time, with an authenticated copy of the will and of the statement probating it. In Montana the Clerk of District Court handles informal probate. A will from a place that does not probate wills after death can come in under 72-3-213(4) and, in a formal case, MCA 72-3-316, using an authenticated certificate from the will's legal custodian.

A will filed at home but never probated has its own section. Montana added MCA 72-3-220 in 2005. It lets that will be proved here with an authenticated certificate from its legal custodian stating the copy is true and that the will was filed and not submitted for probate in the home state. Section 72-3-320 repeats the rule for formal proceedings.

A home-state ruling on the will binds Montana. MCA 72-3-312 makes Montana courts accept another state's final order on testacy or the validity of a will, made after notice and a chance to contest, if it rests on a finding that the decedent was domiciled there. Under MCA 72-4-402, a judgment for or against any personal representative of the estate binds the Montana representative too.

The Three-Year Deadline Has a Carve-Out

MCA 72-3-122(1) bars most probate and appointment proceedings started more than 3 years after death. It excludes two that matter here: a proceeding to probate a will previously probated at the testator's domicile, and appointment proceedings in an estate where there has already been an appointment.

So a family that finds a Montana royalty interest six years after a parent died in Washington is not shut out, as long as the Washington court probated the will. Where no proceeding concerning the estate happened within 3 years, 72-3-122(1)(d) still allows a late appointment, but that representative may possess estate assets only as far as needed to confirm title in the successors, and claims other than expenses of administration may not be presented. The Montana probate timeline collects the other dates.

Can the Small Estate Affidavit Reach the Montana Share?

Rarely. MCA 72-3-1101 measures the value of the probate estate wherever located, less liens and encumbrances, against $100,000, so the home in the decedent's own state counts toward the limit. Subsection (1)(c) also closes the route once an application or petition to appoint a personal representative is pending or granted in any jurisdiction. When the home-state case is open, use 72-4-306 or the registration instead. The Montana small estate guide covers the affidavit in full.

If the Decedent Lived in Montana and Owned Land Elsewhere

Reverse the facts and Montana becomes the home state. The Montana personal representative handles the main case in the county of domicile, and the other state's rules decide what it takes to act on land there. Ask that state's court what it needs before ordering authenticated copies here, so you order them once. The Montana executor duties guide covers the home-state side, including the inventory and the notice to creditors.

Keeping Montana Property Out of a Second Case

The cheapest ancillary case is the one nobody has to open. Montana gives owners three planning routes:

Common Questions

Does Montana always require a second probate case for a nonresident who owned Montana property?

No. A home-state personal representative can register under MCA 72-4-303 with a district court in a county holding property, receive the clerk's certificate, and act on Montana assets with the powers of a local personal representative under 72-4-310. A full Montana case is still the route when the will is contested, when nobody has been appointed at home, or when a local administration has already been requested.

Which Montana court handles ancillary probate?

The district court, through its Clerk of District Court. The registration goes to a district court in a county where the decedent's property is located, and a full case for a nonresident may be venued in any county where property sat at death under MCA 72-3-112(1)(b).

What does ancillary probate cost in Montana?

The Montana Clerks of District Courts fee schedule lists Foreign Probate - With certificate at $85 and the ancillary petition for a full case at $100. MCA 25-1-201(1)(n) sets the base fee for the 72-4-303 registration at $55, and the schedule total adds the other filing charges.

Can a Montana bank pay an out-of-state executor without a Montana filing?

MCA 72-4-306 allows it 60 days after death, on proof of appointment and an affidavit. Because 72-4-307 ties the payer's release to the clerk's certificate, a bank may ask you to register first. A resident creditor's notice under 72-4-308 closes the route.

Can a Montana ancillary case start more than three years after the death?

Yes, when the will was probated at the domicile. MCA 72-3-122(1) excludes a proceeding to probate that will from its 3-year bar, and 72-3-213(3) allows informal probate of a will probated elsewhere at any time.

Can a Montana small estate affidavit handle the Montana share of a multistate estate?

Rarely. The $100,000 limit in MCA 72-3-1101 counts the probate estate wherever located, and the affidavit closes once a personal representative application is pending or granted in any jurisdiction.

Sources:

It is not legal advice.

Information current as of September 27, 2026

Settled Estate is not a law firm, and this content is for informational purposes only and does not constitute legal advice. Probate laws and procedures in Montana can change. Consult with a qualified attorney for advice specific to your situation. Full disclaimer.