If you are searching for how child custody works in Montana, the answer starts with a change of vocabulary. Montana courts do not award custody and visitation to divorcing parents. They adopt a parenting plan: a written document that says where your child lives and when, who makes which decisions, and how the two of you will handle disagreements. This page is the overview of the parenting section of our Montana Divorce Guide.
Why Montana Says Parenting Plan, Not Custody
The statutes that govern parents in a dissolution of marriage are written around the parenting plan. A plan allocates "parenting functions," which the statute describes as the parts of the parent-child relationship in which a parent makes decisions and does what is necessary for the care and growth of the child (MCA § 40-4-234(1)).
The word custody has not vanished. A plan may name one parent as custodian, but only for other state and federal laws that require that label, and the statute says the designation may not affect either parent's rights and responsibilities under the plan (MCA § 40-4-234(2)(a)). The act that decides which state hears a case also still uses the older words.
Who Decides the Plan
In every dissolution, legal separation, or parenting proceeding that involves a child, each parent, or both parents together, must submit a proposed final parenting plan to the court in good faith. A final plan must be incorporated into any final decree, including a decree entered by default (MCA § 40-4-234(1)).
The district court then determines the plan "in accordance with the best interest of the child" (MCA § 40-4-212(1)). A judge decides the questions of law and fact without a jury, and parenting proceedings receive priority in being set for hearing (MCA § 40-4-216(1), (4)). The court may also order parents into a dispute resolution process, such as counseling or mediation, to help them settle the plan (MCA § 40-4-234(4)).
The Best Interest Standard
The statute tells the court to consider "all relevant parenting factors" and then lists thirteen, from the wishes of the parents and the child to continuity and stability of care and the child's developmental needs. The list is not exclusive. We go through each one in the best interest factors.
Two questions deserve their own pages. One is whether equal time is the starting point, which we answer in is 50/50 parenting the default. The other is whether a child can pick, covered in does my child get to choose. The short version: the statute sets no presumed schedule, and it sets no age at which a child decides.
What a Final Parenting Plan Covers
MCA § 40-4-234(2) lists the provisions a final plan may include, based on the best interest of the child. The main ones are below, and what a parenting plan must include explains each in detail.
| Provision | What it covers | MCA |
|---|---|---|
| Custodian designation | One parent may be named custodian solely for other state and federal laws that require it. The label does not change either parent's rights under the plan. | § 40-4-234(2)(a) |
| Legal residence | The legal residence of both parents and the child. | § 40-4-234(2)(b) |
| Residential schedule | When the child lives with each parent, including holidays, family birthdays, vacations, and other special occasions. | § 40-4-234(2)(c) |
| Finances | How the child's needs will be paid for. | § 40-4-234(2)(d) |
| Periodic review | When the plan will be looked at again, such as when the child reaches a certain age. | § 40-4-234(2)(f) |
| Sanctions | What happens if a parent does not follow the plan, including contempt of court. | § 40-4-234(2)(g) |
| Decision-making | Who decides about education, spiritual development, and health care and physical growth. | § 40-4-234(2)(h) |
| Dispute resolution | How future disagreements will be resolved other than by court action. | § 40-4-234(2)(i) |
The residential schedule is the part parents live with day to day. Parenting schedules by age describes the common patterns. The schedule also feeds into child support, which is calculated separately.
Before the Final Plan: Interim Plans and Evaluations
A case can take time, and children need a schedule in the meantime. Either parent may ask for an interim parenting plan, which the court decides under the same best interest standard (MCA § 40-4-213(1)). The final plan replaces it.
When parents disagree, the court has tools to learn more about the child. It may appoint a guardian ad litem to represent the child's interests, order an investigation and report, or interview the child in chambers (MCA §§ 40-4-205, 40-4-214, 40-4-215). See guardians ad litem and parenting evaluations.
After the Decree: Changes, Moves, and Enforcement
A final plan is meant to last, and one of its stated objectives is to provide for a child's changing needs "in a way that minimizes the need for future amendment" (MCA § 40-4-233(4)). Life still changes. These pages cover what happens next:
- Amending a parenting plan: the changed circumstances test in MCA § 40-4-219.
- Relocating with a child: written notice and the motion required by MCA § 40-4-217.
- When a parent does not follow the plan: contempt, plan sanctions, and the crime of parenting interference.
- Grandparent contact: when a court may order it over a parent's objection.
One rule runs through all of them. If a parent fails to comply with a provision of the plan, the other parent's obligations under the plan are not affected (MCA § 40-4-234(6)). The remedy for a violation is to go back to the dispute resolution process in your plan or to the court, not to stop following the plan yourself.
Reaching a Plan by Agreement
The statute encourages parents, when appropriate, to meet their responsibilities "through agreements in the parenting plan rather than through judicial intervention" (MCA § 40-4-233(6)). Parents who can work together may do that on their own, in mediation, or through A&M Law's Cooperative Family Law process, in which the firm serves as a neutral for both spouses and each remains free to consult their own lawyer. The firm also represents individual parents in contested parenting cases.
Agreement is not safe for everyone. If there has been abuse or you are afraid of the other parent, tell your lawyer before any joint meeting. If you are in danger, call 911. The National Domestic Violence Hotline is 1-800-799-7233, and our Montana Domestic Violence Guide explains orders of protection.
This page explains Montana law in general as of the 2025 Montana Code Annotated. It is not legal advice about your specific case.