Child Custody in Missouri: Laws and Factors

Missouri child custody law is governed primarily by RSMo Section 452.375, which establishes how courts determine custody arrangements and what factors guide the decision. The state uses the traditional terms “custody” and “visitation” and directs courts to resolve every custody question based on the best interests of the child. Missouri does not favor one parent over the other based on gender.

In 2023, Missouri enacted Senate Bill 35, which introduced a rebuttable presumption that equal or approximately equal parenting time is in the child’s best interest. This was a landmark change — the most significant update to Missouri custody law in over 35 years. Courts now begin their analysis with the assumption that a 50/50 arrangement serves the child, and a parent who opposes equal time must present evidence to rebut that presumption.

This article explains Missouri’s custody framework in detail, including the types of custody, the 8 statutory best interest factors, parenting plan requirements, relocation rules, and the role of domestic violence in custody decisions.

For a general overview of custody laws across the country, see our guide on child custody laws explained.

Types of Custody in Missouri

Missouri recognizes both legal custody and physical custody, each of which may be awarded on a joint or sole basis. Under RSMo 452.375, the available arrangements include:

Joint Legal Custody

Both parents share the decision-making rights, responsibilities, and authority relating to the health, education, and welfare of the child. Unless the court allocates specific decisions to one parent, the parents must confer with each other when exercising decision-making authority. Joint legal custody is commonly awarded in Missouri.

Sole Legal Custody

One parent holds the exclusive authority to make major decisions about the child’s health, education, and welfare. Courts typically award sole legal custody when the parents are unable to communicate or cooperate on major decisions, or when one parent has a history of abuse, neglect, or substance abuse.

Joint Physical Custody

Each parent is awarded significant, but not necessarily equal, periods of time during which the child resides with or is under the care and supervision of that parent. Joint physical custody must be structured to ensure the child has frequent, continuing, and meaningful contact with both parents.

Sole Physical Custody

The child lives primarily with one parent, and the other parent has a visitation schedule. The non-custodial parent retains the right to reasonable parenting time unless the court restricts or supervises visitation due to safety concerns.

The Rebuttable Presumption of Equal Parenting Time

Missouri’s Senate Bill 35, effective August 28, 2023, introduced a rebuttable presumption that an award of equal or approximately equal parenting time to each parent is in the best interests of the child. This means the court begins its analysis with the assumption that a roughly 50/50 schedule serves the child.

The presumption can be rebutted by a preponderance of the evidence showing that equal parenting time is not in the child’s best interest. Grounds for rebutting the presumption include:

• A different agreement between the parents — if both parents agree to a different arrangement, the court will consider that agreement
• Evidence of domestic violence or abuse by one parent
• Evidence that equal time would not serve the child’s best interest based on the statutory factors, such as geographic distance between the parents, work schedules, or the child’s specific needs

The presumption applies to new custody cases and modifications. It does not guarantee a 50/50 outcome in every case, but it shifts the starting point and places the burden on the parent opposing equal time to demonstrate why a different arrangement is warranted.

The 8 Best Interest Factors (RSMo 452.375.2)

When parents cannot agree on a custody arrangement, Missouri courts evaluate 8 statutory factors under RSMo 452.375.2 to determine which arrangement best serves the child:

Factor 1: The Wishes of the Parents

The court considers the wishes of the child’s parents as to custody and the proposed parenting plan submitted by each parent. A parent’s stated preference carries weight, but it is only one factor among many.

Factor 2: The Child’s Need for a Relationship with Both Parents

The court examines the needs of the child for a frequent, continuing, and meaningful relationship with both parents and the ability and willingness of each parent to actively perform their functions as mother and father for the needs of the child. This factor reflects Missouri’s strong public policy favoring involvement by both parents.

Factor 3: Interaction and Interrelationship

The court evaluates the interaction and interrelationship of the child with parents, siblings, and any other person who may significantly affect the child’s best interests. The quality of the child’s existing bonds — with extended family, step-siblings, or close family friends — matters.

Factor 4: The Friendly Parent Factor

The court examines which parent is more likely to allow the child frequent, continuing, and meaningful contact with the other parent. This is sometimes called the “friendly parent” provision and can significantly influence the outcome. A parent who denies parenting time, speaks negatively about the other parent in front of the child, or otherwise interferes with the child’s relationship with the other parent is viewed unfavorably.

Factor 5: The Child’s Adjustment

The court considers the child’s adjustment to home, school, and community. Stability matters. If a child is thriving in a particular school, has established friendships, and is settled in a community, the court is generally reluctant to disrupt that arrangement without good reason.

Factor 6: Mental and Physical Health

The mental and physical health of all individuals involved is relevant, including any history of abuse. This factor encompasses substance abuse, untreated mental health conditions, and any conduct that affects a parent’s ability to care for the child. The court focuses on how a parent’s health condition impacts their parenting capacity.

Factor 7: Intention to Relocate

The court considers the intention of either parent to relocate the principal residence of the child. A parent’s plan to move — especially a significant distance — weighs in the analysis because relocation affects the child’s relationship with the other parent and the feasibility of a shared parenting schedule.

Factor 8: The Wishes of the Child

The court considers the wishes of the child, taking into consideration the child’s age and maturity. Missouri does not set a specific age at which a child’s preference becomes determinative. Senate Bill 35 strengthened this factor by requiring the court to consider the child’s unobstructed input, free of coercion and manipulation, as to his or her custodial arrangement. In practice, older and more mature children receive greater weight, but the court retains full discretion.

The Parenting Plan Requirement

Missouri requires all custody cases to include a parenting plan under RSMo Section 452.310. Each parent must submit a proposed parenting plan, and if the parents agree, they may submit a joint plan. The parenting plan must address:

• The residential schedule — regular parenting time, holidays, school breaks, and vacations
• Decision-making authority — education, healthcare, religious training, and extracurricular activities
• A dispute resolution method — how the parents will resolve future disagreements (typically mediation before returning to court)
• Transportation arrangements — how exchanges between homes will be handled
• Communication provisions — how the child will communicate with each parent during the other parent’s parenting time

If the parents cannot agree, the court reviews both proposed plans and crafts an order that serves the child’s best interests. The court may adopt one parent’s plan in full, combine elements of both plans, or create an entirely new arrangement.

The Child’s Preference

Missouri does not set a specific age at which a child may choose which parent to live with. The statute directs the court to consider “the wishes of a child as to the child’s custodian, taking into consideration the age and maturity of the child.” In practice, children around age 11 and older may express a preference, and the weight given to that preference increases as the child matures.

Senate Bill 35 added a requirement that the court consider the child’s input free of coercion and manipulation. This means the court will evaluate whether a child’s stated preference is genuine and independent or the result of coaching by one parent.

The judge may interview the child in chambers or receive the child’s views through a guardian ad litem — an attorney appointed by the court to represent the child’s best interests.

Guardian Ad Litem

Under RSMo Section 452.423, the court may appoint a guardian ad litem (GAL) in any custody proceeding. The court must appoint a GAL when child abuse or neglect is alleged. The guardian ad litem’s role is to:

• Investigate the child’s circumstances
• Interview both parents, the child, teachers, and other relevant persons
• Report findings and recommendations to the court
• Represent the child’s best interests throughout the proceeding

The GAL’s recommendation carries significant weight with the court, though the judge makes the final custody determination.

Domestic Violence and Custody

Missouri law takes domestic violence seriously in custody determinations. Under RSMo 452.375, if the court finds that a pattern of domestic violence has occurred, and if the court awards custody to the abusive parent, it must enter written findings of fact and conclusions of law explaining why that arrangement serves the child’s best interest.

Key provisions include:

• No presumption in favor of an abusive parent. The court evaluates whether custody with the abusive parent would endanger the child.
• Supervised visitation. The court may order supervised parenting time if there is a risk of harm to the child.
• Orders of protection. A parent can obtain an order of protection that includes custody and visitation provisions, providing immediate legal protection.
• Rebuttal of equal time presumption. Evidence of domestic violence is an explicit ground for rebutting the presumption of equal parenting time introduced by Senate Bill 35.

The court considers the nature and severity of the violence, whether the violence was directed at the child or the other parent, and whether there is an ongoing risk.

Relocation Rules

Missouri has a detailed relocation statute under RSMo Section 452.377. “Relocation” means a change in the child’s principal residence for a period of 90 days or more.

Notice Requirements

A parent who intends to relocate with the child must provide written notice by certified mail, return receipt requested, to any party with custody or visitation rights at least 60 days before the proposed move. The notice must include:

• The intended new address and phone number
• A brief statement of the specific reasons for the proposed relocation
• A proposal for a revised custody or visitation schedule
• Information about the other parent’s right to file a motion to prevent the relocation within 30 days

Objection Process

The non-relocating parent may file a motion to prevent the relocation within 30 days of receiving notice. The motion must include an affidavit setting forth the specific good-faith factual basis for opposing the move. If an objection is filed, the court holds a hearing and considers the reasons for the move, the impact on the child, the feasibility of a modified schedule, and whether the move is made in good faith.

Consequences of Non-Compliance

Failure to provide proper notice is treated seriously. The court may consider the failure as a factor in deciding whether to modify custody, may order the return of the child, and may require the relocating parent to pay reasonable expenses and attorney fees.

Mediation

Many Missouri courts require or strongly encourage mediation in contested custody cases before the matter proceeds to trial. While there is no single statewide mandate, local circuit rules in many jurisdictions require parents to attempt mediation as a standard step.

Mediation allows parents to negotiate a parenting plan with the help of a neutral third party. Agreements reached in mediation can be submitted to the court for approval. If mediation is unsuccessful, the case proceeds to a hearing or trial.

Modification of Custody Orders

An existing custody order can be modified under RSMo Section 452.410 when a parent demonstrates a substantial and continuing change in circumstances since the prior order and that the modification serves the child’s best interests.

Within two years of the original order, the standard is higher — the parent must show that the child’s present environment endangers the child’s physical, mental, moral, or emotional health. After the two-year period, the court applies the general change-in-circumstances standard.

For a detailed guide to the modification process, see our article on Missouri custody modification.

What to Do Next

If you are facing a custody dispute in Missouri, take these steps to strengthen your position:

• Document your involvement in your child’s daily life — school activities, medical appointments, extracurricular events, and caregiving responsibilities
• Maintain a stable home environment that supports the child’s routine and well-being
• Demonstrate willingness to cooperate with the other parent, as Missouri courts weigh the “friendly parent” factor heavily
• Prepare a detailed parenting plan that addresses the residential schedule, decision-making, and communication
• Understand the presumption of equal time — under Senate Bill 35, the court starts with the assumption of a 50/50 arrangement

For more on custody topics, see our guides on types of child custody and how child custody is determined.

To discuss your case with an experienced family law attorney, schedule a free consultation.

Frequently Asked Questions

Does Missouri presume equal custody?

Yes. Since August 28, 2023, under Senate Bill 35, Missouri courts apply a rebuttable presumption that equal or approximately equal parenting time is in the child’s best interest. This presumption can be rebutted by a preponderance of the evidence showing that a different arrangement better serves the child — for example, if both parents agree to a different schedule, if there is evidence of domestic violence, or if the statutory best interest factors weigh against equal time.

What are the 8 best interest factors in Missouri?

Under RSMo 452.375.2, Missouri courts evaluate: (1) the wishes of the parents, (2) the child’s need for a relationship with both parents, (3) the interaction and interrelationship of the child with parents, siblings, and significant persons, (4) which parent is more likely to allow frequent contact with the other parent, (5) the child’s adjustment to home, school, and community, (6) the mental and physical health of all individuals involved, (7) either parent’s intention to relocate, and (8) the wishes of the child.

At what age can a child choose which parent to live with in Missouri?

Missouri does not set a specific age. The court considers the child’s wishes taking into account the child’s age and maturity. In practice, children around age 11 and older may express a preference, and the weight increases with maturity. Senate Bill 35 requires the court to consider the child’s input free of coercion and manipulation. The child does not get to “choose” — the judge weighs the preference alongside all other best interest factors.

What are Missouri’s relocation rules?

Under RSMo 452.377, a parent must provide written notice by certified mail at least 60 days before a proposed relocation of 90 days or more. The notice must include the intended new address, the reason for the move, and a proposed revised custody schedule. The non-relocating parent may file a motion to prevent the move within 30 days. If an objection is filed, the court holds a hearing to determine whether the relocation serves the child’s best interests.

Is mediation required in Missouri custody cases?

Missouri does not have a single statewide mediation mandate, but many circuit courts require mediation in contested custody cases before the matter proceeds to trial. Local court rules vary by jurisdiction. Mediation gives parents an opportunity to negotiate a parenting plan with the assistance of a neutral mediator, and agreements reached in mediation can be submitted to the court for approval.

How This Guide Was Researched

This guide was created by reviewing publicly available legal information from official state statutes, judiciary websites, court resources, and family law publications. The goal is to explain family law topics in plain English so readers can better understand the process before speaking with an attorney.

Sources and Legal References

This guide is based on publicly available legal information and official sources, including:

• Missouri state statutes and family law codes
• Missouri judicial branch website and court resources
• Official Missouri court forms and filing instructions
• Missouri custody and parenting time guidelines
• State bar association and legal aid resources

Official Missouri Resources

• Missouri Courts — Divorce
• Missouri Courts — Representing Yourself in a Family Law Case
• Missouri Dissolution of Marriage Forms
• RSMo Section 452.375 — Custody Definitions and Factors
• RSMo Section 452.377 — Relocation of Child
• RSMo Section 452.410 — Modification of Custody

For more about how we research our guides, see our editorial policy and sources methodology.

Related Guides

Learn more about related family law topics:

• Custody in Missouri (state hub)
• Missouri custody modification
• Child support in Missouri
• Divorce in Missouri
• Child custody laws explained
• How child custody is determined
• Types of child custody
• 50/50 custody

Last updated: April 2026. This guide summarizes general legal information based on publicly available sources and is provided for educational purposes only. It does not constitute legal advice. For advice specific to your situation, consult a licensed attorney in your state.