Wyoming Custody Laws & Parenting Plans

Wyoming courts decide custody by applying the “best interests of the child” standard under Wyo. Stat. § 20-2-201. Unlike many states that have adopted modern terminology, Wyoming still uses the traditional terms “custody” and “visitation”—but the law recognizes both legal custody (decision-making authority) and physical custody (where the child lives). Courts strongly encourage parents to reach voluntary agreements and will approve plans that serve the child's welfare.

This guide covers Wyoming's best interest factors, types of custody, parenting plan requirements, the shared custody overnight threshold, child support under the percentage-of-income model, mediation, domestic violence protections, and modification standards. Whether you are filing for divorce or adjusting an existing order, understanding these rules helps you build a plan that protects your children and satisfies the court.

Best Interest of the Child Factors

When parents cannot agree on custody, Wyoming courts evaluate the child's best interests under Wyo. Stat. § 20-2-201. The statute lists several factors the court must consider, though the list is non-exclusive—meaning judges retain broad discretion to weigh additional relevant circumstances:

1. Parent–child relationship: The quality of the relationship each child has with each parent, including the ability of each parent to provide love, affection, and guidance
2. Ability to provide care: Each parent's capacity to provide adequate care for the child throughout each period of responsibility, including food, clothing, medical care, and a safe environment
3. Parental fitness: The relative competency and fitness of each parent to care for the child
4. Willingness to accept responsibility: Each parent's willingness to accept all responsibilities of parenting, including accepting care at specified times and relinquishing care to the other parent at specified times
5. Domestic violence: Evidence of domestic abuse, which the court is required to consider as contrary to the child's best interests

Important: Wyoming law prohibits courts from applying a preference for one parent over the other based solely on gender. Both parents stand on equal footing, and the court focuses exclusively on what arrangement serves the child's welfare.

Types of Custody in Wyoming

Wyoming recognizes two dimensions of custody, which the court can allocate independently based on each family's circumstances:

Legal Custody (Decision-Making)

• Joint legal custody: Both parents share authority over major decisions about the child's education, healthcare, religious upbringing, and general welfare
• Sole legal custody: One parent has exclusive decision-making authority for these matters

Physical Custody (Residential Schedule)

• Primary physical custody: The child primarily resides with one parent; the other parent has scheduled visitation
• Shared physical custody: Each parent has the child overnight for more than 25 percent of the year (more than 91 overnights annually), triggering the shared-responsibility child support calculation
• Split custody: Each parent has primary physical custody of at least one child—used when siblings are divided between households

Courts can award joint legal custody while designating one parent as having primary physical custody. Many Wyoming families use this arrangement, where both parents share major decisions but the child has a primary home with a structured visitation schedule for time with the other parent.

Explore different custody arrangements and see how parenting time translates into annual days:

Parenting Plan Requirements

Wyoming courts require parents to submit a parenting plan that addresses specific elements. The Wyoming Judicial Branch publishes comprehensive divorce packets (DIVCP series) with forms and instructions for cases involving minor children. A complete Wyoming parenting plan must address:

• Residential schedule: A specific written schedule covering weekdays, weekends, holidays, school breaks, and summer vacation with overnight allocations
• Decision-making allocation: How major decisions about education, healthcare, religion, and extracurricular activities are divided between parents
• Communication protocols: How parents will communicate about the child's needs and how the child will contact each parent during the other's time
• Transportation: Who provides transportation for exchanges, pickup and drop-off locations, and who pays associated costs
• Travel provisions: Under what circumstances the child may travel out of state or out of the country, and notice requirements
• Emergency decision-making: Protocols for urgent medical, educational, or safety decisions when the other parent is unavailable
• Dispute resolution: Whether parents will use mediation or return to court for future disagreements about the plan

When both parents agree on terms, the court reviews the plan to confirm it serves the child's best interests before approving it. Wyoming also requires a Confidential Statement of Parties for Child Support and a Confidential Financial Affidavit in all cases involving children, ensuring the court has accurate financial information for support calculations.

The 25 Percent Overnight Threshold

Parenting time directly affects child support calculations in Wyoming. The critical dividing line is the 25 percent overnight threshold under Wyo. Stat. § 20-2-304:

Basic Obligation (Primary Custody)

When one parent has the child for fewer than 25 percent of overnights per year (fewer than 91 nights), the standard child support formula applies. The noncustodial parent pays their proportionate share of the combined parental obligation based on each parent's percentage of the total combined income.

Shared Responsibility Calculation

When each parent has the child overnight for more than 25 percent of the year (more than 91 nights), the shared-responsibility formula kicks in. This involves a 150 percent multiplier applied to the basic obligation, reflecting the increased cost of maintaining two households equipped for the child. Each parent's obligation is then calculated based on their income share and the percentage of time the child spends with the other parent. The parent with the larger obligation pays the difference.

This threshold creates a meaningful financial incentive for parents to carefully track overnight allocations. Even a few nights' difference around the 91-night mark can shift which calculation method applies, significantly changing the support amount. For a detailed walkthrough of Wyoming's child support calculations, see our Wyoming child support guide.

Child Support and Custody

Wyoming uses a percentage-of-income model for calculating child support under Wyo. Stat. § 20-2-304. The guidelines use statutory tables based on combined net income and number of children. Key elements include:

• Income-based calculation: Both parents' net incomes are combined to determine the total obligation from the statutory table, then divided proportionally
• Medical support: Every order must address health insurance coverage and uninsured medical expenses—insurance is required if available at reasonable cost (no more than 5 percent of income) and accessible in the child's geographic area
• Self-support reserve: Based on current HHS poverty guidelines (approximately $1,304 per month for one person in 2025), protecting low-income obligors from orders that would push them below subsistence
• Deviation factors: Courts may deviate from guidelines under Wyo. Stat. § 20-2-307 for special circumstances such as extraordinary medical needs, travel costs for visitation, or educational expenses

Use the Wyoming Child Support Calculator for official guideline estimates, or try our calculator below for a quick comparison:

Mediation and Parenting Education

Wyoming does not have a statewide statutory mandate requiring mediation in all custody cases. However, many Wyoming judges require mediation in contested custody disputes through local standing orders or individual case management orders. Courts are authorized to order alternative dispute resolution under W.R.C.P. Rule 40, and failure to comply with a judge's mediation order can delay your trial date.

Similarly, Wyoming does not require parenting education classes statewide, but courts routinely order parents to complete co-parenting programs under their best-interests authority. When ordered, these programs typically cost $25 to $75 per parent. The court determines the provider and specific requirements through standing order or individual case order.

Even when mediation is not required, it is strongly recommended for custody disputes. Mediated agreements tend to be more durable and reduce post-decree conflict. Parents who reach a voluntary agreement avoid the uncertainty of leaving custody decisions entirely to a judge.

Domestic Violence and Custody

Wyoming takes domestic violence seriously in custody proceedings. Under Wyo. Stat. § 20-2-201, courts are required to consider evidence of domestic abuse as contrary to the child's best interests. The Wyoming Domestic Violence Protection Act (Wyo. Stat. § 35-21-101 et seq.) provides additional safeguards:

• Protection orders: Survivors can file domestic violence protection orders with no filing fee, in either circuit court or district court
• Safe visitation: Courts must craft safe visitation arrangements when family violence has been documented, including supervised exchanges and restricted contact
• Confidential information: Parents can request confidential handling of contact information, addresses, and safety-oriented parenting plan terms
• Parallel proceedings: Protection order cases and divorce proceedings can run simultaneously, with judges coordinating orders to ensure consistent and safe custody terms
• Temporary orders: Courts can issue temporary custody orders and status quo orders to prevent harm, such as orders prohibiting removal of children from the state

Modifying Custody and Support Orders

Wyoming allows modification of custody and support orders when circumstances change, but the threshold is deliberately high to protect children from instability.

Custody Modification

A parent seeking to modify custody must demonstrate a material change of circumstances affecting the child's best interests. Courts apply this standard strictly—routine changes in lifestyle or minor disagreements do not qualify. The moving parent bears the burden of showing both that circumstances have materially changed since the original order and that the proposed modification serves the child's welfare.

Relocation

Wyoming does not have a separate relocation statute requiring formal advance notice before moving with a child. When a planned move would affect the existing parenting schedule, the relocating parent typically files a motion to modify. The court evaluates the move under the material change standard and the § 20-2-201 best interest factors, focusing on whether the relocation would harm the child's relationship with the nonmoving parent.

Child Support Modification

Under Wyo. Stat. § 20-2-311, child support can be modified if the order is at least six months old. A modification is presumptively justified if applying current guidelines produces a 20 percent or greater change in the monthly amount. Additionally, every three years either parent may request a review without proving changed circumstances—the court simply recalculates under current guidelines. Modifications are not retroactive; they take effect from the date the modification petition was served on the other parent.

Typical Case Timelines

Wyoming has no mandatory waiting period beyond service and answer deadlines, which means uncontested cases can move quickly:

• Uncontested (agreed parenting plan): 6 to 12 weeks from filing to decree
• Contested with custody disputes: 8 to 15 months, accounting for mediation, custody evaluations, discovery, and trial scheduling
• Service deadline: The defendant must be served within 90 days of filing under W.R.C.P. Rule 4(w)
• Answer deadline: 20 days for in-state service, 30 days for out-of-state service
• Initial disclosures: Due within 30 days after the answer deadline under W.R.C.P. Rule 26

For a comprehensive overview of the divorce process timeline, see our Wyoming divorce timeline guide.

Key Takeaways

• Best interest standard: Courts evaluate parent–child relationships, parental fitness, willingness to co-parent, and domestic violence under § 20-2-201
• No gender preference: Wyoming law prohibits favoring either parent based solely on gender
• Two custody dimensions: Legal custody (decisions) and physical custody (residence) can be allocated independently as sole or joint
• 25% overnight threshold: Shared physical custody adjustments apply when each parent has more than 91 overnights per year (§ 20-2-304)
• 150% multiplier: Shared-responsibility child support uses a 150 percent multiplier on the basic obligation to account for dual-household costs
• Medical support required: Every order must address health insurance and uninsured medical expenses
• Mediation often required locally: No statewide mandate, but many judges order mediation through standing orders
• Domestic violence front and center: Courts must consider abuse as contrary to best interests and craft safe visitation arrangements
• High modification threshold: Requires a material change of circumstances; child support uses the 20 percent variance standard
• Three-year support review: Either parent may request a child support review every three years without proving changed circumstances
• No waiting period: Wyoming has no mandatory cooling-off period, allowing uncontested cases to finalize in 6 to 12 weeks

For general information about how parenting time affects child support in any state, see our guide on how parenting time affects child support.