Wisconsin Custody Laws & Parenting Plans

Wisconsin courts decide custody and physical placement based on the child's best interests under Wis. Stat. § 767.41. Unlike states that use “physical custody,” Wisconsin uses the term physical placement to describe where a child lives and spends time. The state also presumes that joint legal custody is in every child's best interests—giving both parents shared decision-making authority unless safety concerns apply.

This guide covers Wisconsin's best interest factors, the joint legal custody presumption, parenting plan requirements under Form FA-4147V, the shared placement child support formula, mediation obligations, 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.

The Joint Legal Custody Presumption

Under Wis. Stat. § 767.41(2)(am), Wisconsin courts begin with a rebuttable presumption that joint legal custody is in the child's best interests. This presumption means both parents share decision-making authority over education, healthcare, religion, and extracurricular activities unless the court finds otherwise.

The presumption does not apply—and the court may not grant joint legal custody—if it finds that a party has engaged in interspousal battery (as defined under Wis. Stat. § 940.19 or § 940.20(1m)) or domestic abuse (under Wis. Stat. § 813.12(1)(am)). In those situations, the court must determine legal custody based solely on the best interest factors without any presumption favoring joint custody.

Even outside the domestic violence exception, either parent can rebut the presumption by presenting evidence that joint legal custody is not in the child's best interests. Common rebuttal scenarios include:

• Inability to cooperate: Parents who cannot communicate or make joint decisions about the child's welfare
• Substance abuse or neglect: Evidence of ongoing substance abuse that affects parenting capacity
• Geographic distance: When parents live far enough apart that joint decision-making becomes impractical
• History of interference: One parent consistently undermining the other's relationship with the child

Important: Wisconsin's presumption applies only to legal custody (decision-making), not to physical placement (where the child lives). There is no statutory presumption of equal physical placement time in Wisconsin. The court determines each parent's placement schedule based on the best interest factors.

Wisconsin's Best Interest Factors

When parents cannot agree on custody or placement, Wisconsin courts must evaluate all relevant factors under Wis. Stat. § 767.41(5)(am). The court may not prefer one parent over the other based on sex or race. The statutory factors include:

• Parental wishes: Each parent's proposed parenting plan, stipulation, or custody/placement proposal
• Child's wishes: Communicated directly or through a guardian ad litem, considering the child's age and maturity
• Relationships: The child's interaction and relationship with parents, siblings, and other significant persons
• Child's adjustment: How well the child has adjusted to home, school, and community
• Mental and physical health: Of all individuals involved in the child's life
• Availability of childcare: Access to public or private childcare services
• Cooperation: Whether each parent will support the child's relationship with the other parent
• Predictability and stability: The child's need for regularly occurring and meaningful periods of physical placement
• Reports and evaluations: Recommendations from guardians ad litem, family court counselors, or other professionals
• Parenting history: Whether one parent has unreasonably refused to cooperate or communicate with the other

Wisconsin public policy, stated in § 767.41(4)(a), declares that children benefit from regularly occurring, meaningful periods of physical placement with each parent and from having both parents participate in child-rearing decisions. Courts must maximize the time each parent has with the child, consistent with the child's best interests.

Types of Custody in Wisconsin

Wisconsin recognizes two distinct dimensions:

Legal Custody (Decision-Making)

• Joint legal custody: Both parents share the right to make major decisions about education, healthcare, religion, and extracurricular activities. This is the presumptive standard.
• Sole legal custody: One parent has exclusive decision-making authority. Granted only when the joint custody presumption is overcome.

Physical Placement (Residential Schedule)

• Primary placement: The child lives mainly with one parent; the other parent receives periods of placement (sometimes called “visitation”)
• Shared placement: Each parent has at least 25% of annual placement time (≥92 overnights). This triggers Wisconsin's shared placement child support formula.
• Split placement: When families have multiple children and one or more children live primarily with each parent

Joint legal custody does not automatically mean shared physical placement. Many Wisconsin families have joint legal custody with a primary placement parent, combined with a generous schedule for the other parent.

Explore different placement arrangements and see how parenting time translates into annual overnights:

Parenting Plan Requirements (Form FA-4147V)

Under Wis. Stat. § 767.41(1m), any party seeking legal custody or physical placement must file a Proposed Parenting Plan with the court. Wisconsin uses statewide Form FA-4147V, which must be filed within 60 days after the court receives notice that mediation has been waived or has failed. Failure to file on time can waive objections to the other parent's plan.

What the Parenting Plan Must Address

• Legal custody allocation: Joint or sole, and how major decisions will be made
• Physical placement schedule: A specific plan for weekdays, weekends, holidays, school breaks, summer vacation, and special occasions
• Exchange provisions: Where and how custody transitions occur
• Communication protocols: How parents will discuss child-related matters and how the child will contact each parent during placement
• Dispute resolution: Whether parents will use mediation, arbitration, or return to court for future disagreements
• Decision-making details: How education, health, religion, and activity decisions are divided between parents

Domestic abuse protection: If there is evidence of interspousal battery or domestic abuse, a parent filing a parenting plan may provide only a general description of their residence and workplace rather than exact addresses. This protection is built into § 767.41(1m)(b) and (c).

Mandatory Mediation and Guardian ad Litem

Wisconsin law makes mediation mandatory in most contested custody and placement cases. Under Wis. Stat. § 767.405, every county must provide mediation through Family Court Services, and at least one session is required before a contested custody trial can proceed.

• Safety exception: Courts may waive mandatory mediation when attendance would endanger a party's health or safety (§ 767.405(8)(b))
• Cost: The first mediation session is often free (varies by county). In Milwaukee County, subsequent sessions cost $100 per person; in Waukesha County, additional sessions cost $200 per case.
• Confidentiality: Mediation discussions are generally confidential and cannot be used against either party at trial

Guardian ad Litem (GAL)

Under Wis. Stat. § 767.407, the court must appoint a guardian ad litem—an attorney who represents the child's best interests—when custody or placement is contested or when there is special concern for the child's welfare. The GAL investigates, interviews both parents and the child, and provides a recommendation to the court. Counties typically require an upfront GAL deposit (for example, Waukesha County requires $2,000).

Residency Requirements and Timeline

Before filing for divorce in Wisconsin, you must meet these requirements:

• 6-month state residency: Under Wis. Stat. § 767.301, at least one spouse must have lived in Wisconsin for 6 months before filing
• 30-day county residency: At least one spouse must have lived in the filing county for 30 days
• 120-day waiting period: Under Wis. Stat. § 767.335, no divorce can be finalized until 120 days after service on the respondent (or after a joint petition is filed)
• Filing fees: $184.50 without a support request; $194.50 with child support or maintenance requests (plus a $35 eFiling fee if filing electronically)

For a complete overview of the Wisconsin divorce process, see our Wisconsin divorce filing checklist.

Child Support Under the Percentage Standard

Wisconsin uses a percentage-of-income model governed by Wis. Stat. § 767.511 and the DCF 150 administrative code. Unlike income-shares states, Wisconsin applies percentages directly to the paying parent's monthly income available for child support (MIACS):

• 1 child: 17% of MIACS
• 2 children: 25%
• 3 children: 29%
• 4 children: 31%
• 5 or more children: 34%

Shared Placement Formula

When both parents have at least 25% of annual placement time (92 or more overnights each), Wisconsin uses a shared placement cross-credit formula with a 150% cost multiplier that accounts for duplicated expenses in two households:

1. Calculate each parent's MIACS
2. Multiply by the applicable percentage (17%/25%/29%/31%/34%)
3. Multiply by 150% (the duplication-of-costs multiplier)
4. Multiply by the percentage of time the child spends with the other parent
5. Offset the two amounts; the parent with the higher figure pays the net difference

High-Income Adjustments

Wisconsin reduces the marginal support percentages for high-income payers. Monthly income above $7,000 is subject to lower percentages, and income above $12,500 is reduced further. Courts may also apply low-income adjustments for payers near or below the federal poverty level.

For a deep dive into Wisconsin's child support formula, see our Wisconsin child support calculations guide.

Relocation and Custody Modification

Wisconsin imposes specific restrictions on relocating with children during and after divorce proceedings. Under Wis. Stat. § 767.215(2)(h)–(j), during the pendency of the case and without the other parent's consent or a court order, you may not:

• Move more than 100 miles: Relocating the child's residence more than 100 miles from the other parent
• Remove from the state: Taking the child outside Wisconsin for more than 90 consecutive days
• Conceal the child: Hiding the child from the other parent

Violating these restrictions can result in contempt findings. After the divorce is final, any parent seeking to modify custody or placement must demonstrate a substantial change in circumstances since the last order and show that modification serves the child's best interests.

Modifying Child Support

Child support modifications require a substantial change in circumstances—such as a significant change in income, a change in placement time, or a change in the child's needs. Either parent can file a motion to modify using the same court that issued the original order.

Key Takeaways

• Joint legal custody presumption: Wisconsin presumes both parents should share decision-making authority (Wis. Stat. § 767.41(2)(am))
• No equal placement presumption: Physical placement is determined by best interest factors, not a statutory 50/50 default
• Best interest standard: Courts weigh parental wishes, the child's adjustment, cooperation, and stability among other factors
• Parenting plan required: File Form FA-4147V within 60 days after mediation is waived or fails
• Mandatory mediation: At least one session required before contested custody trial (§ 767.405)
• Guardian ad litem: Required in contested custody cases (§ 767.407)
• Percentage-of-income support: 17% for one child through 34% for five or more (DCF 150)
• Shared placement formula: 150% cost multiplier when each parent has ≥92 overnights
• 120-day waiting period: Minimum time before divorce can be finalized
• 6-month remarriage bar: Cannot remarry anywhere for six months after the divorce judgment
• Domestic abuse protections: Address confidentiality in parenting plans and mediation waivers for safety

For general information about contested versus uncontested divorce paths, see our guide to uncontested vs. contested divorce in Wisconsin.