What a 50/50 Custody Presumption Actually Changes for Your Child

When you hear that your state has “gone 50/50,” it can sound as if your child’s schedule is already decided. A 50/50 custody presumption changes the starting point in court: the judge begins with equal or joint parenting time, while your child’s best interests still determine the final order.

That shift affects who must make the case for a different schedule. It does not make equal time automatic, and it does not remove the court’s responsibility to consider your child’s needs.

The short answer: the starting line moves, but your child's best interests still decide

A rebuttable presumption tells the judge to start from equal or joint parenting time, and the parent seeking a different arrangement must show why the court should depart from that starting point. The presumption can be overcome with evidence, and the final decision still turns on your child’s best interests.

As of October 8, 2026, seven states have such a presumption: Kentucky (2018), Arkansas (2021), West Virginia (2022), Florida (2023), Missouri (2023), Mississippi (2026), and Louisiana (2026). The laws differ in their terms and exceptions. Louisiana’s approach works differently from Kentucky-style laws.

Your state’s law controls what “equal” or “joint” means in your case and how the presumption applies. A judge still evaluates the circumstances before setting a schedule. Safety concerns and other exceptions in the statute can affect the result.

State by state: who has what

The seven states listed below have provisions described as custody presumptions, with important differences in what they presume and how they apply.

• Kentucky: The law presumes joint custody and equal parenting time. A parent can rebut the presumption by a preponderance of the evidence. If the court chooses a different schedule, it must maximize each parent’s time with the child under the circumstances. You can read the Kentucky statute.
• Arkansas: The presumption is for joint custody. The law took effect in 2021. Because “joint custody” is the statutory term, you should check how Arkansas law defines and applies it before assuming it guarantees equal time. The 2021 Arkansas act sets out the presumption.
• West Virginia: The state adopted a presumption in 2022. The statute describes the starting point and the court’s role in deciding custody arrangements. You can review West Virginia’s custody statute for the governing language.
• Florida: A 2023 law established a rebuttable presumption of equal time-sharing. The current statute also sets out factors and exceptions that guide the court’s decision. Check Florida’s time-sharing law for the terms that apply to your case.
• Missouri: A 2023 change created a rebuttable presumption favoring equal or approximately equal parenting time. The court applies the statute’s standards when it decides a parenting plan. The Missouri statute contains its custody and parenting-time provisions.
• Mississippi: A presumption was adopted in 2026. The state’s law and its exceptions determine how it applies to a particular family.
• Louisiana: A 2026 change affects how a joint custody decree is implemented by changing “should” to “shall” in the governing provision. Louisiana’s approach differs from the equal-time presumption used in states such as Kentucky.

What changes in a real case

The parent asking for unequal parenting time carries the burden of presenting evidence that supports a different schedule. That can change how each parent prepares for a custody decision.

If you support equal time, the presumption gives you a legal starting point. You still need to show how the proposed schedule fits your child’s circumstances. If you seek unequal time, you must explain why the presumption should be rebutted and connect your evidence to your child’s needs.

Keep your evidence specific. Relevant details may include your child’s age, the distance between homes, the school routine, and any safety concerns. A clear account of how a schedule would work in daily life gives the court information it can use.

The presumption may shape negotiations as well as court arguments because both parents know which starting point the judge will use. It does not settle a dispute by itself. The written statute in your state controls the legal standard, including any exceptions and the evidence the court considers.

What it does not change

A 50/50 presumption does not replace the best-interests standard. The judge still decides whether the proposed arrangement serves your child’s interests under the law that applies in your state.

The presumption also does not guarantee a 50/50 schedule in every case. State laws include exceptions, and a parent can offer evidence that supports a different arrangement. The specific standard and process vary by state.

Your child’s needs remain central to the court’s decision. A schedule must be assessed in light of the circumstances in your case, including any safety issue raised by the evidence. The presumption sets the starting point; the judge must still decide what order fits your child.

What the research says, and what it doesn't

Supporters point to studies linking shared physical custody with positive child outcomes, while acknowledging that those studies cannot establish that the custody arrangement caused the outcomes.

In a 2018 review of 60 studies, Linda Nielsen defined joint physical custody as each parent having at least 35% of the child’s time. She reported generally better outcomes for children in joint physical custody, even after accounting for income and conflict.

Those findings are correlational. They show an association between custody arrangements and outcomes, but they cannot prove that the arrangement itself caused the differences. The studies therefore do not establish that equal time will suit every child or family.

Don Hubin of the National Parents Organization argues that a presumption lowers parents’ anxiety and conflict. That is a claim about how a legal starting point may affect parents, distinct from the child-outcome findings in Nielsen’s review.

For your case, research offers context, not an answer about the schedule your child should have. The court applies your state’s law to your child’s circumstances and the evidence presented.

What to do in your state

Read your state’s statute, because headlines can blur differences between laws. Check the exact presumption, the burden of proof, and the exceptions that apply where you live.

Gather information about your child’s needs, including age, distance between homes, schooling, and safety. Tie each point to the schedule you are asking the court to consider.

Also check the status of proposed laws in your state. Some bills elsewhere have failed, including in Oklahoma, while other proposals are pending. A bill’s status does not change the law unless it takes effect.

Sources (5)

• apps.legislature.ky.gov
• arkleg.state.ar.us
• code.wvlegislature.gov
• flsenate.gov
• revisor.mo.gov