Is 50/50 Custody Actually Good for Your Child? Arizona Tried It for 13 Years. Here's What Happened.

Equal custody sounds fair on paper. Equal time,  three and a half days with me, same for you. OK! Equal rights, no problem there. Equal access… well, if we're all paid up and there are no outstanding debts… Sign Me Up! But… something in the buttermilk ain't clean, friend.

The conversation happening right now in state legislatures across the country, not family courthouses, enshrining "equal custody" into law isn't shaking out to be about ensuring joint custody as we know it.

WHAT IS EQUAL CUSTODY?

Equal custody, or presumptive 50/50 custody, is a legal arrangement where both parents equally share parenting time, typically 182 to 183 overnights annually. It differs from joint legal custody, which involves shared decision-making. In states with a presumption of equal custody, courts start with a 50/50 default unless a parent provides evidence for a different arrangement.

Is 50/50 custody healthy? 

Research from a 13-year Arizona study yielded mixed results on the healthiness of 50/50 custody. While many professionals rated it positively, nearly half of attorneys and mental health providers viewed it as harmful, noting increased domestic violence allegations and many mothers feeling pressured to accept less parenting time.

Arizona jumped out there and tested “presumptive 50/50” custody in 2013. Thirteen years later, researchers published what actually happened.

What the study found:

1. It functioned as a presumption even though the law never used that word.
The legislation only said courts should "maximize" parenting time. Judges interpreted that as equal time by default. The presumption happened in practice whether it was written into law or not.

2. Most professionals were split if it was good for children
Overall ratings leaned positive. Conciliation court staff were the most favorable. Attorneys and mental health providers were split, roughly half said good, half said harmful. 

3. It did not increase parental conflict overall.
Legal conflict stayed neutral. Parent-to-parent conflict stayed neutral. The fear that 50/50 would make custody battles worse did not materialize at scale.

4. Allegations of domestic violence, child abuse, and substance abuse went up.
Not dramatically, but measurably. Whether those are real allegations or strategic ones see the Alec and Lydia Act.

5. Fathers benefited financially. Mothers were financially penalized.
Child support decreased. That is expected means more parenting time means less support owed. But the downstream effect on mothers' financial stability was rated as moderately detrimental by attorneys and judges alike.

6. About half of mothers felt forced into accepting less time.
Not negotiated. Not chosen. Forced

7. "Good dads" were virtually guaranteed equal time.
Judges and attorneys estimated a 75% chance that a father deemed a good parent would get equal time even when the mother opposed it.

Arizona's response to the domestic violence problem took effect June 1, 2026. The Alec and Lydia Act is named after two children killed by their father during court-ordered parenting time. His history of domestic violence was documented. The court gave him access anyway.

The law makes four major changes: it defines coercive control as a form of abuse, creates a presumption against awarding custody to a parent with a domestic violence history, changes how appeals are reviewed so prior rulings carry less weight, and puts child safety above the 50/50 presumption. Before this law, a documented history of domestic violence was one factor among many. Now it is the primary factor.

That took Arizona thirteen years to get right.

Tennessee, Kentucky, Maryland, and New Jersey are all rolling out their own versions of equal custody — without the provisions Arizona needed over a decade to adopt, and without the benefit of what the 2013 data showed. That should concern anyone currently navigating one of those systems.

I hope you don’t read this as an argument against fathers or against children having time with both parents. The historical bias toward mothers in custody decisions was real, and in some cases genuinely harmful to children. Both things are true. Equal time as a concept isn't wrong. Equal time as a blanket presumption applied without individualized review, without accounting for safety, and without enough time per case is where everything we’ve seen, from data to anecdotal evidence will show, says we should slow down.

This is exactly the kind of conversation we have on Legally Uncensored. Not the sanitized version. The real one with the data, the contradictions, and the parts nobody wants to say out loud. Subscribe and listen wherever you get your podcasts.