Child Custody in Montana

Parenting plans, not custody orders

Montana law requires a parenting plan in any proceeding that determines how a child's time and decision-making will be divided between parents. That proceeding could be a dissolution of marriage, a parenting plan action between unmarried parents, or a paternity case. The plan itself covers the residential schedule, holiday and school-break time, and how the parents will handle decisions about the child's education, health care, and religious upbringing. Montana does not use separate legal-custody and physical-custody labels the way some states do. Instead, the parenting plan spells out both the schedule and the decision-making allocation directly.

The best-interest factors under MCA 40-4-212

When parents cannot agree on a plan, the district court decides based on the best interest of the child, considering the factors listed in MCA 40-4-212. Those factors include the wishes of the parents and, depending on the child's age and maturity, the child's own wishes. They also include the child's relationship with each parent, siblings, and other significant people, and the child's adjustment to home, school, and community. The factors also cover the mental and physical health of everyone involved. They include any history of physical abuse or threats of abuse, and chemical dependency or chemical abuse by either parent.

Continuity and stability of care and the child's developmental needs are also factors. Another factor is whether either parent has failed to pay birth-related costs or child support they were able to pay. The court also weighs whether one parent has intentionally withheld the child from the other without a good-faith reason. It considers whether frequent and continuing contact with both parents is in the child's best interest.

The court is directed to consider all relevant parenting factors, not just the ones listed, so this is not a rigid checklist.

How a Montana custody case starts

For married parents, the parenting plan is typically decided as part of a dissolution of marriage case. For parents who were never married, either parent can start a standalone parenting plan action in district court. Paternity generally needs to be established first, if it is not already acknowledged. Montana district courts are the general-jurisdiction trial courts that hear these cases. Self-represented parents can find self-help materials and forms through the Montana Judicial Branch's Court Help Program and the courts.mt.gov forms library.

Montana's self-help forms are organized as step-by-step packets that vary by case type: dissolution with children, parenting plan only, or paternity. A parent should confirm the correct packet with the district court clerk or the Court Help Program in their area before filing.

Mediation and parenting classes

Montana law allows a district court to order mediation or refer parents to a parenting-plan facilitator when they disagree about a plan. Many of Montana's judicial districts also have their own local rules about mediation and parent education requirements before a contested parenting matter goes to hearing. These requirements are set at the judicial-district level, not uniformly by statute. A parent should confirm with the specific district court, or the Court Help Program location serving that county, whether mediation or a parenting class is required before a hearing is set.

Amending a parenting plan later

A Montana parenting plan is not locked in permanently. Under MCA 40-4-219, a court may amend a plan if it finds that circumstances affecting the child have changed. The amendment must also be necessary to serve the child's best interest. Beyond that general standard, the statute lists specific situations that support amendment. These include when both parents agree to the change. They also include when the child has already been integrated into the other parent's home, with the consent of the parent who currently has the plan.

The list also covers a child who is at least 14 and wants the change. It covers a parent who has willfully and consistently refused to let the requesting parent have the contact set out in the existing plan.

A proposed change might affect a parent's ability to maintain their relationship with the child, such as a residence change. In that case, the court also looks at the feasibility of preserving that relationship, each parent's reasons, and each parent's willingness to promote continued contact.