Montana Family Law Court Process

Montana Family Law Court Process: Step-by-Step Guide

What this guide covers: The Montana family law court process is different from what most people expect — and different from what other states do. This step-by-step guide walks through every stage, from the moment you file to the day your case closes, using Montana’s actual terminology and statute references. Because family law cases are highly individual, the specifics of your situation will differ from the general process described here. Schedule a free consultation with Stephanie DeBoer to understand exactly how the process applies to your case before you take any action.

Step 1: Know the Montana Terms — They Are Different From Other States

Before anything else, it helps to know that Montana uses different words for things you may have heard called something else. Using the right terms will help you understand your paperwork and your attorney’s advice.

Montana stopped using the words “custody” and “visitation” in 1997. The state uses “parenting” instead to make clear that both parents remain involved in their children’s lives. All court forms, parenting plans, and orders use this language. When you file, the paperwork will reflect these Montana-specific terms.

Step 2: Residency and Jurisdiction — Can You File in Montana?

Before you file anything, Montana must have jurisdiction — the legal authority to hear your case.

For dissolution of marriage: At least one spouse must have lived in Montana for at least 90 days immediately before filing (MCA § 40-4-104).

For cases involving children: The children must generally have lived in Montana for at least 6 months before the court can make parenting decisions (MCA § 40-4-211). There are limited exceptions — primarily for emergency safety situations — but the 6-month rule governs most cases.

Where to file: You file in the District Court of a county where at least one spouse lives, or where the children live. For most Missoula families, this is the Missoula County District Court.

Montana is a no-fault state. You do not need a reason to file for dissolution. You do not have to prove anyone did anything wrong. The legal basis is simply that the marriage is “irretrievably broken” — meaning it cannot be saved. You must state this in your Petition.

Step 3: Filing the Petition — Starting the Case

A Montana family law case begins when the Petitioner files a Petition with the Clerk of the District Court. The type of Petition depends on the situation:

• Petition for Dissolution of Marriage — for married couples seeking divorce
• Joint Petition for Dissolution of Marriage — for married couples who agree on everything and are filing together
• Petition for Legal Separation — for couples who want a court order but do not want to end the marriage
• Petition for Parenting Plan — for unmarried parents who need a court-ordered parenting arrangement

Montana provides free, standardized petition forms at courts.mt.gov and montanalawhelp.org. Filing fees at Missoula County District Court are approximately $200 for a dissolution and around $170 for a parenting plan. If you cannot afford the fee, you may file a Statement of Inability to Pay Court Costs and Fees, and a judge can waive some or all fees.

When you file with children involved, you will also need to file a Proposed Parenting Plan that sets out what you are asking for regarding parenting time and decision-making.

Step 4: The Automatic Economic Restraining Order — Effective Immediately

This is one of the most important things to understand about Montana family law — and one of the things most people are not told until it is too late.

The moment a dissolution petition is filed, Montana law automatically issues an Automatic Economic Restraining Order (AERO) under MCA § 40-4-126. No judge needs to sign it. It happens automatically as part of the filing process.

What the AERO does:

• Prevents either spouse from transferring, hiding, selling, or otherwise disposing of marital property — except for ordinary living expenses or routine business operations
• Prevents either spouse from taking out new loans against marital assets
• Prevents either spouse from changing insurance beneficiaries
• Prevents either spouse from canceling or modifying insurance policies
• Requires both parties to maintain the financial status quo

When it applies: The AERO is binding on the Petitioner (the person filing) the moment they file. It is binding on the Respondent the moment they are served with the Petition.

Violating the AERO is not a minor issue. The court can impose sanctions and hold a violating party in contempt of court. If a spouse hid assets, transferred money from accounts, or canceled insurance in violation of the AERO, those actions can have serious consequences for the property division outcome.

Step 5: Serving the Other Party

After filing, the Petition must be formally delivered to the other party — this is called service of process. Service is not just handing your spouse a copy. Montana law requires formal service methods:

• Personal service: The Respondent is served in person by the Missoula County Sheriff or a private process server. This is the most common method.
• Acknowledgment of service: The Respondent signs a form confirming they received the documents and returns it to the Petitioner, who then files it with the court.
• Service by mail: Allowed in some circumstances, but the Respondent must return a signed acknowledgment.
• Service by publication: A last resort when the Respondent cannot be located after good-faith attempts to find them. Requires court permission and publication in a local newspaper.

If you and your spouse are filing a Joint Petition together, service is not required — you are both already part of the case as Co-Petitioners.

The date the Respondent is served starts the clock on everything that follows.

Step 6: The 21-Day Response Window

After being served, the Respondent has 21 days to file a written Response with the court (MCA § 40-4-105). The Response allows the Respondent to state their own position on property division, parenting, maintenance, and any other issues in the case.

If the Respondent does not respond within 21 days, the Petitioner can request a default judgment. In a default, the court grants the Petitioner essentially what they asked for in the Petition — as long as it is fair (equitable) and, if children are involved, in the children’s best interests. A hearing is still required even for a default.

If the Respondent does respond, the case becomes contested — both parties will need to work through the issues, either by agreement, mediation, or a hearing.

Note: A decree cannot be entered until at least 21 days after service, even if both parties fully agree. This is Montana’s minimum waiting period — there is no additional mandatory separation period or waiting time beyond this 21-day minimum.

Step 7: Temporary Orders — Rules While the Case Is Open

A family law case can take months or years to fully resolve. Life does not stop in the meantime. Either party may request temporary orders governing how things work while the case is pending (MCA § 40-4-121).

Temporary orders can cover:

• Interim Parenting Plan: A temporary schedule for where the children live and when each parent has parenting time
• Temporary child support: Payment obligations while the case is open
• Temporary maintenance: Spousal support paid while the case is pending
• Use of the family home: Which spouse stays in the home during the case
• Payment of bills: Who pays the mortgage, utilities, car payments, and other ongoing expenses
• No-contact or restraining orders: If there are safety concerns

A temporary order remains in effect until the judge modifies it or the final decree is entered. Violating a temporary order — including an Interim Parenting Plan — can result in contempt of court and can harm your position in the final resolution of the case.

Emergency temporary orders: In genuine emergencies — such as when a child is in immediate danger or a parent threatens to take children out of state — a court can issue a temporary order on an ex parte basis (without the other party being present first) under MCA § 40-4-220. These emergency orders are short-term and trigger a follow-up hearing quickly.

Step 8: Financial Disclosures — The 60-Day Requirement

Within 60 days of service of the Petition, both parties must exchange a Preliminary Declaration of Disclosure — a sworn, itemized list of all assets, debts, income, and expenses (MCA § 40-4-252).

This document is signed under penalty of perjury. It covers:

• All property either party owns or has an interest in — real estate, vehicles, bank accounts, retirement accounts, investments, business interests
• All debts — mortgages, car loans, credit cards, student loans, medical bills
• Income from all sources
• Monthly living expenses

The Preliminary Declaration is served on the other party but not filed with the court — unless the judge orders it. This protects the privacy of your financial information.

A Final Declaration of Disclosure must also be exchanged before the case goes to trial or before a final agreement is signed. Both parties are required to make full, honest disclosure. A court can set aside a judgment for up to 5 years if it discovers that a party committed perjury in a financial disclosure.

Montana is an equitable distribution state. Under MCA § 40-4-202, the court divides all marital property equitably — meaning fairly, but not necessarily 50/50. The court considers both spouses’ contributions, including a spouse’s contribution as a homemaker. Marital misconduct (infidelity, etc.) is not a factor in property division — but economic misconduct (hiding assets, gambling away marital funds) can be.

Step 9: The Two Paths — Agreed or Contested

At some point after filing, the case will go one of two ways:

Path A: Agreed (Uncontested)

Both parties work out every issue — property, debt, parenting plan, child support, maintenance — and put it in writing. They file the signed agreement with the court. A judge reviews it to confirm that it is fair and, if children are involved, that it is in the children’s best interests. If approved, the judge signs the final decree.

In many cases, an agreed dissolution can be finalized without either party appearing in court by submitting an affidavit for entry of the decree without a hearing, provided all procedural requirements are met.

Timeline: typically 2 to 4 months from filing to final decree for a straightforward agreed case.

Path B: Contested

One or both parties disagree on significant issues. The case requires court involvement to resolve them — through hearings, mediation, or trial. This path takes significantly longer and costs more.

Timeline: typically 9 to 18 months for a contested case; 18 to 24+ months for high-conflict cases with complex property or parenting evaluators.

Step 10: Mediation — The Required Middle Step

In most contested Montana family law cases, the court will order the parties to attend mediation before scheduling a trial. Mediation is a structured negotiation session with a trained, neutral mediator — not a judge — who helps both parties work toward a resolution they can both accept.

Key facts about Montana mediation:

• Both parties are allowed to bring their attorneys to mediation
• The mediator does not take sides and does not make decisions
• If mediation results in an agreement, the agreement is put in writing and filed with the court to become a court order
• The court can order mediation more than once
• What is said in mediation is confidential — it cannot be used against you in court

Important exception: Mediation is not appropriate when there has been physical, sexual, or emotional abuse or the threat of abuse by one party against the other or the children (MCA § 40-4-219). If abuse is a factor in your case, tell your attorney immediately. You have the right to ask the court to excuse mediation.

Step 11: The Scheduling Order and Discovery (Contested Cases)

In a contested case, after the Respondent files their answer, the court typically issues a Scheduling Order. This document sets the timeline and requirements for moving the case toward resolution. It typically includes:

• Deadlines for completing financial disclosures
• Discovery deadlines (exchanging documents, requests for information)
• Mediation deadline
• Deadline for filing pretrial motions
• Trial date (or a date for a scheduling conference to set a trial date)

Discovery is the formal process of gathering information from the other party. In family law cases, discovery tools include:

• Interrogatories: Written questions the other party must answer under oath
• Requests for production: Demands for specific documents — bank statements, tax returns, business records, emails
• Subpoenas: Court orders requiring third parties (banks, employers, etc.) to produce records
• Depositions: Sworn oral testimony taken before a court reporter, outside of court

Discovery is where most of the work in a contested case happens. It can be time-consuming, expensive, and contentious — particularly in cases involving complex finances or disputed facts about parenting.

Montana’s Informal Domestic Relations Trial (IDRT) — A Newer Option

Montana introduced the Informal Domestic Relations Trial (IDRT) process, effective October 2023, to make the family law process more accessible — especially for people representing themselves without an attorney.

In an IDRT, the formal rules of evidence do not apply. The judge takes a more active role by asking questions, gathering information directly, and guiding the process. Both parties can present their case in a less formal setting. The court’s final ruling in an IDRT has the same legal force as a judgment from a traditional trial.

IDRTs apply automatically when at least one party is self-represented, unless a party objects. If both parties have attorneys, they can still request an IDRT with the court’s permission. This process can save significant time and money in cases that do not require traditional adversarial litigation.

Step 12: Trial or Settlement — How Cases Resolve

Most Montana family law cases — even contested ones — resolve without going to trial. Settlement can happen at any point: before mediation, during mediation, after mediation, or even the week before a scheduled trial. When parties reach a full agreement, they file it with the court, and the judge approves it.

If the case cannot be settled, it goes to trial. Montana family law trials are bench trials — decided by a judge, not a jury. Both sides present evidence, call witnesses, and make legal arguments. The judge then decides all unresolved issues.

After trial, the judge may:

• Issue a ruling from the bench (announcing the decision immediately)
• Take the matter under advisement and issue a written decision weeks later

Once the judge’s findings are final, the attorneys (or parties) draft the Final Decree of Dissolution incorporating those findings.

Step 13: The Final Decree — The Official End of the Case

The Final Decree of Dissolution is the court order that officially ends the marriage and resolves all remaining issues. It includes:

• A declaration that the marriage is dissolved
• Property division — who gets what assets and who is responsible for which debts
• The Final Parenting Plan (if there are minor children)
• Child support order
• Maintenance (spousal support) terms, if any
• Any name changes
• Any other agreed-upon or court-ordered terms

The Final Decree takes effect when the judge signs it. Your marital status for tax purposes is determined by where you stand on December 31 of the tax year — if the Decree is signed before December 31, you file as single that year.

For parenting-only cases (unmarried parents), the equivalent final document is the Final Parenting Plan, which covers parenting time, decision-making, and child support. It does not address property or marital status.

Step 14: After the Decree — What Comes Next

The final decree is not always the end. Several things may need to happen after the decree is entered.

Implementing the Property Division

Transferring property requires specific legal steps. Real estate requires a deed transfer. Retirement accounts often require a Qualified Domestic Relations Order (QDRO) — a separate court order sent to the retirement plan administrator. Vehicle titles must be transferred through the Montana DMV. Bank accounts must be separated. Make sure all these steps happen — the decree alone does not automatically transfer anything.

Creditor Obligations

Important: Creditors are not bound by your divorce decree. If the decree says your spouse must pay a joint credit card, but your spouse does not pay it, the credit card company can still pursue you for the debt. Your remedy is to go back to court and ask the court to hold your ex-spouse in contempt for violating the decree.

Name Changes

If a name change was included in the decree, use the certified copy of the decree to update your driver’s license (Montana DMV), Social Security card, passport, bank accounts, and employer records.

Modifying the Decree

Parenting plans and child support can be modified if circumstances change significantly after the decree. Property division generally cannot be modified. Maintenance terms depend on whether the decree included modification provisions. Any modification requires a court proceeding — informal agreements between ex-spouses are not legally binding.

Montana Family Law Case Timeline at a Glance

These are general ranges based on Montana law and typical Missoula County District Court experience. Your actual timeline depends on your specific facts, the court’s current calendar, and the other party’s participation. Discuss your realistic timeline in a free consultation.

How Stephanie DeBoer Can Help You Through This Process

Stephanie DeBoer has practiced family law in the Missoula area for over 15 years and graduated with honors from the University of Montana’s Alexander Blewett III School of Law in 2010. She handles the full range of Montana family law matters — dissolution, parenting plans, child support, legal separation, and prenuptial agreements — throughout Western Montana.

Knowing the process is one thing. Knowing how Missoula County District Court handles specific issues, which arguments move judges, and how to protect your interests at every stage — that is what experience in this courthouse provides.

Stephanie’s first consultation is always free. You will leave with a clear picture of what your case involves, what the realistic timeline looks like, and what steps make sense to take next.

Schedule a Free Consultation

Frequently Asked Questions

How does a Montana family law case start?

A case starts when the Petitioner files a Petition with the Clerk of the District Court. For married couples seeking divorce, this is a Petition for Dissolution of Marriage. For unmarried parents, it is a Petition for Parenting Plan. The filing fee is approximately $200 for dissolution and $170 for a parenting plan. The moment the dissolution petition is filed, an Automatic Economic Restraining Order (AERO) takes effect under MCA § 40-4-126.

How long does a Montana divorce take?

An agreed dissolution typically takes 2 to 4 months. A contested dissolution typically takes 9 to 18 months. High-conflict cases with a parenting evaluator or trial can take 18 to 24 months or more. The only mandatory waiting period is the 21-day minimum after service — Montana has no additional state-imposed waiting period. Your specific timeline depends on your facts and the current calendar of the Missoula County District Court.

What is the Automatic Economic Restraining Order (AERO)?

The AERO is a court order that takes effect automatically upon filing a dissolution petition in Montana (MCA § 40-4-126). It prevents both parties from transferring, hiding, selling, or borrowing against marital assets — except for ordinary living expenses. It is binding on the filer immediately and on the other spouse upon service. Violating it can result in contempt of court and sanctions.

Do I have to go to court in a Montana divorce?

Not always. Agreed (uncontested) cases can often be finalized without a hearing by filing an affidavit requesting entry of the decree. Contested cases require hearings and potentially a trial. Montana also has the Informal Domestic Relations Trial (IDRT) process, effective October 2023, which provides a less formal option for resolving family law cases — particularly when one or both parties are self-represented.

What is the residency requirement for filing for divorce in Montana?

At least one spouse must have lived in Montana for at least 90 days before filing (MCA § 40-4-104). For cases involving children, the children must generally have lived in Montana for at least 6 months (MCA § 40-4-211), with limited safety-related exceptions.

What financial documents do I have to provide in a Montana family law case?

Both parties must exchange a Preliminary Declaration of Disclosure within 60 days of service (MCA § 40-4-252) — a sworn, itemized list of all assets, debts, income, and expenses. A Final Declaration of Disclosure must be exchanged before trial or final agreement. These documents are served on the other party, not filed with the court unless ordered. Perjury in these disclosures can result in a judgment being set aside for up to 5 years.

What is mediation in a Montana family law case?

Mediation is a required step in most contested Montana family law cases. A neutral, trained mediator helps both parties work toward a negotiated resolution. Attorneys can attend with their clients. If an agreement is reached, it becomes a court order. Mediation is confidential. It is not appropriate in cases involving domestic violence or abuse (MCA § 40-4-219). If abuse is a factor, tell your attorney immediately — you can ask the court to waive mediation.

This article is for general information only. It does not constitute legal advice and does not create an attorney-client relationship. The Montana family law court process varies based on the specific facts of each case, the county, the assigned judge, the complexity of the issues involved, and whether the parties are represented by counsel. Deadlines, procedures, and court practices can vary by county and change over time. Montana laws and court rules are updated periodically — always verify current requirements with a licensed Montana family law attorney. Do not rely on this guide as a substitute for legal advice specific to your situation. Schedule a free consultation to discuss your specific circumstances before taking any action. S. DeBoer Attorney at Law — 619 SW Higgins Ave, Suite K, Missoula, MT 59803 — (406) 728-0905.