Montana Divorce Process

Montana Divorce Process: A Step-by-Step Guide

If you are facing a divorce in Missoula, you are probably dealing with a flood of emotions — and a mountain of questions you don’t know how to answer.

What do you file? Where do you file it? How long will this take? Will you have to go to court? What happens to your house? Your kids? Your retirement?

This guide walks you through the Montana divorce process from start to finish, in plain language — no legal degree required. It covers every major step, what to expect, realistic timelines, costs, and what to do if things get complicated.

First: What Montana Calls a “Divorce”

Montana does not use the word “divorce” in its court forms. The official legal term is dissolution of marriage. It means the same thing — the legal end of a marriage through the court system. You will see “dissolution” on every form you file and in your final decree.

Throughout this guide, the words “divorce” and “dissolution” are used interchangeably. They mean exactly the same thing in Montana.

The Big Picture: Two Types of Montana Divorce

Before getting into the steps, you need to understand which type of case you have. This one decision shapes everything — the timeline, the cost, and how much you and your spouse control the outcome.

Uncontested Divorce

You and your spouse agree on all the major issues:

• Who gets which property
• How debts are divided
• Parenting time and decision-making for children
• Child support
• Spousal maintenance (if any)

When you agree on everything, your case is uncontested. You can often skip a court hearing entirely by filing an “Affidavit for Entry of Decree Without Hearing.” Uncontested divorces typically take 2 to 4 months and cost far less than contested ones.

Contested Divorce

You and your spouse disagree on one or more major issues. A judge will ultimately decide what you cannot work out yourselves.

Contested divorces take longer (typically 9 to 18 months), cost more (often $10,000–$30,000+ in attorney fees), and put final decisions in the hands of a judge who does not know your family.

Most divorces in Missoula start as contested and eventually settle before trial. The goal is to resolve as much as possible through negotiation or mediation, so you can keep control of the outcome and minimize cost.

Summary Dissolution — The Fast Track for Simple Cases

Montana also has a streamlined option called Summary Dissolution for very simple cases under Mont. Code § 40-4-130 to -136. To qualify, all of these must be true:

• The marriage is short
• No minor children
• Minimal marital assets and debts
• Both spouses agree on everything

If you qualify, the process can be completed in as little as 20 days with a short hearing. Most people do not qualify — ask your attorney or the court clerk whether this option applies to you.

Before You File: Two Requirements You Must Meet

Residency Requirement — 90 Days

At least one spouse must have lived in Montana for 90 days immediately before filing. (Mont. Code § 40-4-104.)

Active-duty military members stationed in Montana meet this requirement — time stationed here counts.

Children’s Residency — 6 Months

If you have minor children, Montana courts can only handle the custody and parenting portions of your divorce if your children have lived in Montana for at least 6 months before you file. (Mont. Code § 40-4-211.)

There are very narrow safety-related exceptions to this rule. If your children recently moved to or from Montana, talk to a Missoula family law attorney before filing.

Grounds — You Don’t Need a Reason

Montana is a no-fault divorce state. You do not need to prove that your spouse did anything wrong. You simply state that the marriage is “irretrievably broken” — meaning there is no reasonable chance of reconciliation. (Mont. Code § 40-4-104.)

No adultery, no abandonment, no cruelty — just the statement that the marriage is over.

Step 1: Gather Your Documents

Before you fill out a single form, gather these documents. Having them ready will make every step faster and reduce stress.

Financial documents (for both spouses):

• Tax returns for the last 3 years
• Recent pay stubs
• Bank account statements — checking, savings, investment
• Retirement account statements — 401(k), IRA, pension
• Mortgage or lease agreement
• Vehicle titles
• Credit card and loan statements showing current balances
• Any business ownership documents

Property records:

• Deed to any real estate you own
• Appraisals, if available
• Documents showing what you owned before the marriage

If you have children:

• Children’s birth certificates
• Current school and doctor information
• Documentation of each parent’s income

Montana requires both spouses to fully disclose all finances during the divorce. Hiding money or assets is treated as fraud — it can lead to serious consequences and may result in the court awarding additional property to the other spouse.

Step 2: Complete the Required Court Forms

Montana’s official divorce forms are available free on the Montana Judicial Branch website (courts.mt.gov) and in person at the Missoula County District Court clerk’s office.

The Core Forms for Most Cases

Form	What It Does	Notes
Petition for Dissolution of Marriage	The main document that starts the divorce. Describe the marriage and what you are asking for.	Must be signed before a notary or court clerk
Summons	Official notice that a divorce case has started. Must be served on your spouse.	Must be signed before a notary or court clerk
Confidential Information Sheet	Personal information about both spouses and children.	Kept confidential by the court
Vital Statistics Form	Required by Montana for state records.	Standard form

Additional Forms if You Have Children

Form	What It Covers
Parenting Plan	Where children live, how time is shared between parents, who makes major decisions (school, healthcare, religion), holidays, vacations
Child Support Worksheet	Calculates child support based on both parents’ incomes and the time each parent spends with the children
UCCJEA Declaration	Confirms where your children have lived in the past 5 years — required for jurisdiction

If You Both Agree on Everything

When both spouses agree on all issues, you can file a Joint Petition for Dissolution of Marriage — both spouses sign the same document and file together as co-petitioners. This is the simplest and fastest starting point.

Not sure which forms apply to your situation? The Montana Judicial Branch website has a questionnaire that walks you through which forms you need. Or call Stephanie DeBoer at (406) 728-0905 — she can answer this in a free consultation.

Step 3: File with Missoula County District Court

Take your completed forms to the Clerk of the District Court at Missoula County District Court.

Make 3 sets of everything before you go:

• The original — the court keeps this
• One copy for you to keep in a safe place
• One copy to serve your spouse

The filing fee is approximately $150–$250, depending on current Montana fee schedules (Mont. Code § 25-1-201). Contact the Missoula County District Court Clerk’s office directly to confirm the current amount before you go — fees are updated periodically.

Can’t afford the filing fee? File an Affidavit of Inability to Pay Filing Fee. If the judge approves it, the fee is waived. Free legal help is also available through the Montana Legal Services Association (1-800-666-6899) for those who qualify financially.

Once filed, you receive a case number. Your divorce has officially started.

Step 4: The Automatic Economic Restraining Order (AERO) — It Starts Immediately

The moment your petition is filed, Montana law automatically activates an Automatic Economic Restraining Order (AERO) for both spouses — no court hearing required. (Mont. Code § 40-4-126.)

The AERO is a financial restraining order, not a personal one. It prohibits both of you from:

• Selling, transferring, or hiding marital property
• Taking on large new debts without the other spouse’s consent
• Canceling or changing insurance coverage (health, auto, home, life)
• Removing the other spouse or your children as beneficiaries on retirement accounts or life insurance

Both spouses are bound from the moment of filing — even before the other spouse is served. Violating the AERO can seriously damage your position in the divorce and may result in sanctions from the court.

Step 5: Serve Your Spouse

After filing, you must formally deliver the divorce papers to your spouse. This is called service of process. You cannot do it yourself — Montana law requires a neutral third party.

How service is done in Missoula:

• Missoula County Sheriff’s office — most common method, reliable, and legally solid
• Licensed process server — a private company that delivers legal documents professionally
• Certified mail with signed acknowledgment — allowed in some situations if your spouse agrees to accept service this way

Can’t find your spouse? If your spouse has disappeared and you have made a good-faith effort to locate them, you can ask the court for alternate service — typically by publishing a legal notice in a local newspaper such as the Missoulian. Talk to an attorney if you are in this situation.

The clock starts ticking once your spouse is served. Your spouse then has 21 days to file a written response with the court. No divorce decree can be entered until at least 21 days have passed — this is Montana’s minimum waiting period, no exceptions.

Step 6: Your Spouse’s Response — Three Scenarios

Scenario A: Your Spouse Agrees (or Doesn’t Respond)

If your spouse agrees with everything in your petition — or simply does not file a response within 21 days — you can proceed.

If there’s no response after 21 days, you can request a default. In a default, the court typically grants what you asked for in your petition without a hearing. You’ll still need to file the proper paperwork to close the case.

Scenario B: Both Spouses Agree on Terms

In uncontested cases, both spouses typically negotiate a Marital Settlement Agreement — a written contract covering all issues: property, debts, parenting time, child support, and maintenance.

Once both spouses sign this agreement, you may be able to finalize the divorce without appearing in court at all by filing an “Affidavit for Entry of Decree Without Hearing” — as long as more than 21 days have passed since service.

Scenario C: Your Spouse Contests

If your spouse disagrees with anything in your petition, they file a response — and possibly a counter-petition with their own requests. The case moves into contested territory, involving additional filings, financial disclosures, and potentially mediation or a trial.

This is where having an experienced Missoula divorce attorney in your corner becomes especially important. Stephanie DeBoer handles contested cases in Missoula County District Court and works to reach the best outcome with the least conflict. Call (406) 728-0905.

Step 7: Financial Disclosures — Required for Both Spouses

Montana requires both spouses to fully disclose their finances during the divorce. This is mandatory — not optional.

Disclosure Type	Deadline	What’s Covered
Preliminary disclosures	Within 60 days of service	Income, assets, debts, expenses — a full financial snapshot
Final disclosures	45 days before trial (contested cases) OR before signing a settlement	Updated, complete financial information

What happens if you hide assets? Montana courts treat this seriously. If the court finds that one spouse concealed income, accounts, or property, the consequences can include:

• The hidden property is being awarded entirely to the other spouse
• Attorney’s fees and costs charged against the hiding spouse
• Sanctions and loss of credibility with the judge on all other issues

Full, honest financial disclosure is not just legally required — it also puts you in the best position to negotiate from a place of confidence.

Step 8: Dividing Property and Debts

This step is often where divorces get complicated. Montana has specific rules about how property is divided — and they surprise a lot of people.

Montana Is NOT a 50/50 State

Montana is an equitable distribution state. “Equitable” means fair — not necessarily equal. A judge looks at the full picture of your marriage and divides property in a way that is fair for both of you. That could be 50/50. Or 60/40. Or something else entirely. (Mont. Code § 40-4-202.)

What Goes Into the “Pot” to Be Divided

In Montana, all property owned by either spouse — regardless of when it was acquired or whose name is on the title — can be subject to the court’s equitable distribution. This includes property you owned before the marriage, inheritances, and gifts.

However, separate property that was kept completely apart from marital funds carries significant weight in arguments for retaining the original owner. If pre-marital property was mixed with marital money (“commingling”), it becomes much harder to protect.

What Factors Does the Judge Consider?

Montana courts weigh all of these (Mont. Code § 40-4-202):

• How long did the marriage last
• Each spouse’s age, health, occupation, and job skills
• Each spouse’s income and ability to earn in the future
• The standard of living during the marriage
• Debts each spouse carries
• Each spouse’s contributions, including those as a homemaker or stay-at-home parent
• Which spouse will have primary parenting responsibilities
• Whether any spouse wasted or hid marital assets

What courts cannot consider: Marital misconduct. Adultery or bad behavior during the marriage does not affect how property is divided in Montana.

The Family Home

Three common outcomes for the family home:

• Sell and split proceeds — cleanest solution; both spouses walk away with cash
• One spouse keeps it (buyout) — the keeping spouse refinances the mortgage into their own name and compensates the other spouse for their share of the equity
• Deferred sale — one spouse stays until a triggering event, like children finishing school, then the home is sold

Debts Are Divided Too

Montana courts divide marital debts equitably along with assets — mortgages, car loans, credit cards, and other obligations incurred during the marriage.

Critical warning: A divorce decree assigning a debt to your spouse does not release you from that debt to the creditor. If your name is on a joint account and your spouse doesn’t pay, the creditor can still come after you. Work with your attorney to either refinance joint debts or include strong indemnification language in your decree.

Property division is fact-specific and one of the most consequential parts of any divorce. The details of your situation — your assets, your marriage length, your financial history — determine the outcome. A free consultation with Stephanie DeBoer gives you a clear picture of what to expect. Call (406) 728-0905.

Step 9: If You Have Children — Parenting Time and Support

Montana Uses “Parenting Time” — Not “Custody”

Montana courts use the term “parenting time” rather than “custody”. The focus is on what works best for the child, not on which parent “wins.” Both parents are generally expected to remain meaningfully involved in the child’s life.

Two types of arrangements:

• Decision-making responsibility (similar to legal custody): which parent makes major decisions about the child’s education, healthcare, and religious upbringing. Often shared between parents.
• Physical parenting time (similar to physical custody): where the child lives day-to-day and how time is split between homes.

How Courts Decide: The Best Interests of the Child

Montana courts make all parenting decisions based on what is best for the child. Factors include (Mont. Code § 40-4-212):

• The child’s relationship with each parent
• Each parent’s ability to provide for the child’s needs
• How the child has adjusted to their home, school, and community
• The mental and physical health of all parties
• Which parent is more likely to support the child’s relationship with the other parent
• Any history of domestic violence, abuse, or substance problems
• The child’s own preferences, if old enough to express a thoughtful view

There is no automatic preference for mothers or fathers in Montana.

Child Support

Montana calculates child support using state guidelines based on:

• Both parents’ gross incomes
• How much time each parent spends with the children
• Costs for health insurance and work-related childcare

Montana provides a Child Support Calculator through the Department of Child Support Services (CSSD). Child support is not permanent — either parent can request a review if circumstances change significantly.

Required Parenting Class

Missoula County typically requires both parents to complete a parenting education class before the divorce is finalized. The class focuses on how to support children through a divorce. Cost is usually $25–$50 per parent.

Step 10: Spousal Maintenance (What Most People Call “Alimony”)

Montana calls it maintenance — and it is not automatic.

To receive maintenance, you must show the court two things (Mont. Code § 40-4-203):

1. You don’t have enough property to meet your reasonable living needs, and
2. You cannot support yourself through appropriate work, either because of a disability, lack of marketable skills, or because you are the primary caregiver for a young child

If you qualify, the judge then decides how much and for how long. Factors include the length of the marriage, each spouse’s earning capacity, the time needed to become self-supporting, and the paying spouse’s ability to pay.

Three types of maintenance in Montana:

• Temporary maintenance: Paid during the divorce process, while both spouses adjust to two households. Ends when the divorce is finalized.
• Rehabilitative (short-term) maintenance: The most common type. Helps a spouse get back on their feet — finish education, develop job skills, re-enter the workforce. Usually has a set end date.
• Permanent maintenance: Reserved for long marriages where one spouse cannot realistically become self-supporting due to age, health, or decades out of the workforce.

Maintenance ends when the recipient remarries or when either spouse dies, unless the court order states otherwise.

Step 11: Mediation — The Middle Path Between Agreement and Trial

If you can’t agree on all issues but don’t want to go to trial, mediation is the middle path. A neutral mediator (not a judge) helps both spouses work toward an agreement. The mediator cannot make decisions — they facilitate the conversation.

Mediation is especially common for child parenting disputes in Missoula County. Courts sometimes order it in contested cases.

Mediation is:

• Confidential — what’s said in mediation stays there
• Voluntary — you can stop at any time
• Much less expensive than a trial
• Faster — often takes 1 to 3 sessions
• More flexible — you can reach creative solutions a judge might not order

Missoula mediators typically charge $100–$300 per hour. Total mediation costs usually run $1,500–$4,500. This sounds like a lot — but it is a fraction of what a trial costs.

Stephanie DeBoer is an experienced mediator as well as a litigator. She can represent you in mediation or, in appropriate cases, serve as the neutral mediator for both parties. Learn more about her mediation services.

Step 12: The Final Decree of Dissolution

When all issues are resolved — through agreement or court order — the judge signs a Decree of Dissolution of Marriage. Your divorce is legally complete the moment the Missoula County District Court clerk enters this decree into the court record.

The final decree covers:

• Division of all property and debts
• Spousal maintenance (if any) — amount and duration
• Parenting Plan (if children are involved)
• Child support (if children are involved)
• Name restoration, if either spouse wants to return to a former name

After the Decree: What You Still Need to Do

The decree is the legal end of the marriage — but it isn’t the end of the work. Depending on your situation, you may also need to:

• Get certified copies of the decree — at least 2 to 3 (around $3–$5 each from the clerk’s office). You will need these to change names, close joint accounts, and transfer titles.
• Transfer real estate titles through a properly recorded quitclaim deed
• File a QDRO or Family Law Order (FLO) to divide retirement accounts — required before the plan administrator will split any funds
• Refinance joint debts that the decree assigned to one spouse
• Update beneficiary designations on life insurance, retirement accounts, and other financial instruments
• Update your will, powers of attorney, and estate plan

Many people think the decree is the finish line and let these post-divorce steps slide. Leaving joint accounts, debts, or beneficiary designations unchanged after a divorce can create serious financial and legal problems years later.

Montana Divorce Timeline — What to Expect in Missoula

Type of Case	Typical Timeline	Main Variables
Summary dissolution (simple, no children, both agree, qualifies)	As fast as 20–30 days	Whether you meet the strict eligibility criteria
Uncontested (both spouses agree on everything)	2–4 months	Speed of paperwork, court calendar
Uncontested with children	3–5 months	Parenting plan review, child support review
Contested — settles before trial	6–12 months	How quickly parties reach an agreement, and the success of mediation
Contested — goes to trial	12–18+ months	Court scheduling, complexity of issues, Missoula County docket

Missoula County note: Missoula is a busier court than smaller Montana counties. Contested cases with trial dates can take longer to schedule. An experienced local attorney will have a realistic sense of current wait times.

What Does a Montana Divorce Cost?

Expense	Typical Range	Notes
Court filing fee	~$150–$250	Confirm the current amount with the Missoula County clerk. Fee waivers available.
Sheriff/process server	$50–$100	Serving divorce papers on your spouse
Parenting class (per parent)	$25–$50	Required if you have minor children in Missoula County
Mediation	$1,500–$4,500	$100–$300/hour; number of sessions varies
Attorney — uncontested, flat fee	$1,500–$2,500	For simple cases where the attorney handles paperwork and review
Attorney — contested, hourly	$150–$300/hour	Missoula family law attorney rates vary by experience
Total: DIY uncontested (no attorney)	$250–$700	Court costs only; the highest risk of errors
Total: Uncontested with attorney help	$2,000–$4,000	Most common for straightforward cases
Total: Contested divorce	$10,000–$30,000+	Higher with complex assets, custody disputes, or business valuation

Costs are the strongest argument for resolving as much as possible before filing — or through mediation — rather than going to trial. Every hour in front of a judge is an hour of attorney fees for both sides.

When Do You Need an Attorney in Montana?

You are legally allowed to represent yourself in a Montana divorce. Some people manage it successfully — usually in very simple, fully uncontested cases with limited assets and no children.

Hire a family law attorney if any of these apply to you:

• You and your spouse disagree on anything at all
• You have children — especially if parenting time is disputed
• You own real estate, a business, or significant retirement accounts
• One spouse earns much more than the other
• There is a history of domestic violence, coercive control, or power imbalance
• Your spouse has already hired an attorney
• You don’t fully understand something before you sign it
• You have significant debts in both names
• Either spouse is a public employee with an MPERA pension (a special Family Law Order is required — a standard QDRO will be rejected)

Even in simple, uncontested cases, having an attorney review your Marital Settlement Agreement before you sign is one of the highest-value investments you can make. Mistakes in that document can affect your life financially for years.

What Not to Do While Your Divorce Is Pending

Once you file, these are the most common mistakes that hurt people’s positions in court:

• Moving major assets or emptying accounts — this violates the AERO and can be treated as contempt of court
• Making large purchases or taking on new debt — anything unusual triggers the AERO
• Canceling your spouse’s insurance is prohibited by the AERO and can create additional legal liability
• Posting about the divorce on social media — anything you post can be used in court
• Withholding children from the other parent without a court order — this almost always backfires in parenting time hearings
• Signing any agreement without reading it fully — or without understanding what you are giving up
• Agreeing to terms verbally without putting them in writing — verbal agreements are very difficult to enforce

How Stephanie DeBoer Helps Missoula Families Through Divorce

Stephanie DeBoer has practiced family law in Missoula for over 10 years. She is a Montana native — born and raised in Bozeman — and a University of Montana graduate who earned her Juris Doctorate with honors from the Alexander Blewett III School of Law in 2010.

She handles all aspects of Montana divorce, including:

• Uncontested and contested dissolutions
• Parenting plans and parenting time disputes
• High-asset and complex property division
• Business valuation and division
• QDRO and MPERA Family Law Order preparation
• Spousal maintenance negotiations
• Mediation — both as a client advocate and as a neutral mediator
• Post-decree modifications when circumstances change

Her approach: resolve as much as possible through skilled negotiation and mediation, go to court when necessary, and always keep her clients informed about what is happening and why. She serves clients in Missoula and throughout Western Montana.

Frequently Asked Questions

How long does a divorce take in Montana?

Uncontested: 2–4 months. Contested: 9–18 months. Missoula County court backlogs can extend contested timelines. The absolute minimum under Montana law is 21 days after service, even if both spouses agree on everything.

Do I have to prove my spouse did something wrong?

No. Montana is no-fault. You only need to state that the marriage is “irretrievably broken.” No evidence of wrongdoing is required or relevant.

How much does a divorce cost in Montana?

A simple DIY uncontested divorce costs $250–$700 in court fees. With attorney help, most uncontested cases run $2,000–$4,000. Contested divorces typically cost $10,000–$30,000 or more, depending on complexity. Filing fees are approximately $150–$250 — confirm the current amount with the Missoula County clerk. Fee waivers are available for those who qualify.

Can I get divorced in Montana without a lawyer?

Yes — but it’s only advisable for very simple, fully uncontested cases with few assets and no children. If you have children, property, retirement accounts, debts, or any disagreement with your spouse, working with a Missoula family law attorney protects your interests and prevents costly mistakes.

Do I have to be separated first?

No. Montana has no mandatory separation period. You can file while still living together, as long as you can state the marriage is irretrievably broken.

What is a “dissolution of marriage”?

Montana’s official legal term for divorce. Same meaning — different name. You’ll see it on all court forms and in your final decree.

What if my spouse won’t cooperate or respond?

You can still get divorced. If your spouse doesn’t respond within 21 days of service, you can request a default judgment. The court generally grants what you asked for in your petition. Montana does not allow one spouse to permanently block a divorce.

Legal Disclaimer: This article is provided for general informational purposes only and does not constitute legal advice. Montana divorce law is complex and highly fact-specific — the general information in this guide may not apply to your individual situation. Reading this article does not create an attorney-client relationship with S. DeBoer Attorney at Law. Laws and local court practices may change over time. Always consult a licensed Montana attorney before making legal or financial decisions related to your divorce. Results in any legal matter depend on the specific facts and circumstances of each case.