Montana's family law statutes use words that differ from everyday speech and from other states. A divorce is a dissolution of marriage, custody is handled through a parenting plan, and alimony is maintenance. This glossary defines the terms you are likely to see on court papers, with the Montana Code section each one comes from. It is part of our Montana Divorce Guide.
Why Montana's Vocabulary Is Different
The vocabulary of the dissolution chapter reflects its stated purposes, which include promoting "the amicable settlement of disputes" and making irretrievable breakdown the sole basis for ending a marriage (MCA § 40-4-101). The procedural terms follow from that. The statute requires that the first pleading "be denominated a petition" and the reply "a response," and that the case be titled "In re the Marriage of" both spouses (MCA § 40-4-103).
The same is true for children. The statutes that govern parents in a dissolution describe parenting, parenting plans, and parental contact. If you search for "custody" or "visitation," the Montana rules you are looking for are in the parenting plan statutes.
Knowing the statutory word matters for a practical reason. Court forms, orders, and the statutes themselves use it, so it is the word to search for and the word a clerk or judge will use with you.
The Case and the People in It
These terms describe the kind of case you are in and the papers that start and end it. A point that surprises people: the label petitioner or respondent says only who filed first. The statute provides that a decree "may not be awarded to one of the parties" (MCA § 40-4-103(5)).
| Term | What it means | MCA |
|---|---|---|
| Dissolution of marriage | Montana's statutory term for divorce. The court enters a decree of dissolution when the findings in the statute are made. | § 40-4-104(1) |
| Irretrievably broken | The only ground for dissolution. A finding of irretrievable breakdown is a determination that there is no reasonable prospect of reconciliation. | §§ 40-4-104(1)(b), 40-4-107(3) |
| Petition and petitioner | The petition is the first paper filed in the case. The spouse who files it is the petitioner. Both spouses may file together. | §§ 40-4-103(3), 40-4-105 |
| Response and respondent | The reply to a petition is called a response, not an answer. The spouse who is served is the respondent and may file a verified response within 21 days after service. | §§ 40-4-103(3), 40-4-105(3) |
| Verified | Sworn to be true. A petition and a response in a dissolution must be verified. | § 40-4-105(1), (3) |
| In re the Marriage of | How a dissolution or legal separation case is titled, followed by both spouses' names. | § 40-4-103(2) |
| Legal separation | A decree that can settle the same issues as a dissolution while the spouses remain married. Granted if a spouse asks and the other does not object. | § 40-4-104(2) |
| Declaration of invalidity | Montana's term for an annulment. Available only on the grounds the statute lists. | § 40-1-402 |
| Summary dissolution | A simplified joint procedure for spouses who meet every statutory condition, including limits on assets, debts, and real property. | §§ 40-4-130 to 40-4-136 |
| Decree | The court's final order. In the dissolution chapter, decree includes judgment. A decree of dissolution is final when entered, subject to appeal. | §§ 40-4-103(4), 40-4-108(1) |
Terms About Children
Every dissolution involving a child requires a proposed parenting plan, and a final plan is incorporated into the decree (MCA § 40-4-234(1)). Child support is a separate determination made under the state guidelines. Which state can decide parenting at all is a threshold question under the UCCJEA, and it has its own test that is different from the 90-day residency requirement for the dissolution itself.
| Term | What it means | MCA |
|---|---|---|
| Parenting plan | The court-approved plan for a child's care. It covers where the child lives and when, decision-making, and how future disputes are resolved. Montana's parenting statutes use this term where other states say custody and visitation. | § 40-4-234 |
| Best interest of the child | The standard the court uses to decide a parenting plan, applying a list of factors. | § 40-4-212(1) |
| Residential schedule | The part of a parenting plan that specifies when the child resides with each parent, including holidays, birthdays, and vacations. | § 40-4-234(2)(c) |
| Custodian (designation) | A parenting plan may designate one parent as custodian solely for other state and federal statutes that require it. The designation does not affect either parent's rights under the plan. | § 40-4-234(2)(a) |
| Interim parenting plan | A temporary parenting plan adopted while the case is pending. A final parenting plan vacates it. | § 40-4-213 |
| Child support guidelines | The uniform guidelines adopted by the Department of Public Health and Human Services. They must be used in all cases, including agreed and default cases. | § 40-4-204(3)(a) |
| Guardian ad litem | A person the court may appoint to represent a child's interests on support, parenting, and parental contact. | § 40-4-205(1) |
| UCCJEA | The Uniform Child Custody Jurisdiction and Enforcement Act, which decides which state's courts can make parenting decisions. | § 40-7-101 |
| Home state | Under the UCCJEA, the state where a child lived with a parent for at least 6 consecutive months immediately before the case began. | § 40-7-103(7) |
Terms About Money and Property
Two ideas run through this group. First, Montana decides the financial issues "without regard to marital misconduct" (MCA §§ 40-4-202(1), 40-4-203(2)). Second, both spouses owe each other full disclosure. An asset left off a final declaration of disclosure is presumed to be grounds for awarding it to the other spouse (MCA § 40-4-253(4)).
| Term | What it means | MCA |
|---|---|---|
| Maintenance | Montana's term for alimony or spousal support. Available only if the spouse seeking it lacks sufficient property for reasonable needs and is unable to be self-supporting through appropriate employment, or is the custodian of a child whose condition or circumstances make outside employment inappropriate. | § 40-4-203(1) |
| Equitable apportionment | How Montana divides property. The court equitably apportions property belonging to either or both spouses, however and whenever acquired, after weighing listed factors. Equitable is not defined as equal. | § 40-4-202(1) |
| Marital estate | In the disclosure statutes, all assets and liabilities. | § 40-4-251(6) |
| Dissipation | Loss of value of a spouse's estate. The court must consider the contribution or dissipation of value of the respective estates when dividing property. | § 40-4-202(1) |
| Separation agreement | A written agreement between spouses on property, maintenance, and support, parenting, and parental contact with children. People also call it a marital settlement agreement. | § 40-4-201(1) |
| Unconscionable | The standard for rejecting the property and maintenance terms of a separation agreement. Those terms bind the court unless it finds the agreement unconscionable. | § 40-4-201(2) |
| Declaration of disclosure | A sworn statement of assets and liabilities each spouse serves on the other. There is a preliminary one, due within 60 days of service of the petition, and a final one. | §§ 40-4-252, 40-4-253 |
| Qualified domestic relations order (QDRO) | An order, defined in section 414(p) of the Internal Revenue Code, used to divide certain retirement plans. Montana courts seal it. | § 40-4-202(6) |
One more phrase appears often in conversation but not in the statute: "community property." Montana's property statute does not use it. The court apportions property equitably under MCA § 40-4-202 instead of applying a fixed ownership split.
Terms About the Court Process
Dissolutions are filed in district court. Some steps happen automatically at filing, some are available on request while the case is pending, and some matters may be heard by a standing master instead of the judge. A party may object to a referral to a standing master within 20 days after the matter is referred, but before the first meeting with the standing master (MCA § 3-5-124(2)). A referral is made at the judge's discretion or by a standing order of the district court (MCA § 3-5-124(1)), so ask how your court handles family cases, or see divorce court in Missoula County.
| Term | What it means | MCA |
|---|---|---|
| Automatic economic restraining order | An order the clerk issues with the summons that restrains both spouses from transferring, encumbering, concealing, or disposing of marital property, with listed exceptions. | § 40-4-126 |
| Temporary (interim) orders | Orders that apply while the case is pending, such as temporary maintenance, temporary child support, or a temporary injunction. | § 40-4-121 |
| Standing master | A court officer to whom a district court may refer a matter. The standing master holds hearings, may issue temporary orders, and submits findings of fact and conclusions of law that the district court reviews. | §§ 3-5-124, 3-5-126 |
| Default | What the clerk enters when a served party fails to plead or otherwise defend. The petitioner then applies to the court for a decree. | M. R. Civ. P. 55 |
| Mediation | A settlement process the court may consider requiring in a dissolution. It is restricted where the court has reason to suspect abuse, unless each party gives written, informed consent. | § 40-4-301 |
Temporary, Interim, and Final
People mix these up, and the difference matters. A temporary order under MCA § 40-4-121 covers maintenance, child support, or an injunction while the case is pending. The court can issue a temporary restraining order without notice to the other side for no more than 21 days, and only on a showing of irreparable injury (MCA § 40-4-121(4)). An interim parenting plan under MCA § 40-4-213 is the temporary arrangement for children.
Neither one decides the final outcome. A final parenting plan vacates an interim plan (MCA § 40-4-213(4)), and temporary orders end on the terms in MCA § 40-4-121(8). The decree is the final order, and it is final when entered, subject to the right of appeal (MCA § 40-4-108(1)).
Words You Will Hear Outside the Statutes
Some common terms are descriptions, not statutory categories:
- Contested and uncontested. Shorthand for whether the spouses disagree or agree on the terms. See contested vs. uncontested divorce.
- No-fault. Shorthand for the rule that the only ground is irretrievable breakdown and that the old fault defenses are abolished (MCA § 40-4-105(4)).
- Joint petition. A petition both spouses file together under MCA § 40-4-105(2). See filing a joint petition.
- Cooperative Family Law. A&M Law's process in which the firm serves as a neutral for both spouses, who meet together. It is a way of reaching agreement, not a type of court case. See Cooperative Family Law.
If a term on your paperwork is not here, the other sections of this guide define terms in context, starting with how divorce works in Montana.
This page explains Montana law in general as of the 2025 Montana Code Annotated. It is not legal advice about your specific situation.