What is the 80 20 rule in custody?
At Arizona Law Group, we frequently hear parents reference an 80/20 custody rule. This is a common misconception. Arizona does not use percentage-based custody formulas to determine parenting time.
Arizona Does Not Allocate Custody by Percentage
Arizona custody statutes do not assign parenting time based on percentages. Courts are required to create parenting plans that maximize each parent’s time with the child when doing so is consistent with the child’s best interests.
While parents sometimes describe parenting time in percentages, those numbers are not how courts make decisions.
Why the 80/20 Child Custody Myth Continues
The idea of percentage-based custody often comes from outdated materials, online sources, the media, or informal advice from friends or family. Some older sample parenting plans referenced time percentages, but those concepts no longer reflect how Arizona courts approach custody.
Additionally, changes to child support guidelines have reduced disputes over exact day counts, further moving courts away from rigid numerical formulas.
Practical Realities Shape Parenting Plans
Although courts often start from the concept of equal parenting time, equal schedules are not always practical. Distance between parents’ homes, work schedules, school attendance, and safety concerns all influence how parenting time is determined and structured.
Certain professions with unpredictable schedules or long periods away from home may require customized parenting plans. Long-distance parenting arrangements also require flexibility rather than strict equal splits.
How Arizona Law Group Assists With Parenting Plans
The experienced child custody lawyers at Arizona Law Group work with parents to develop parenting plans that reflect real-world circumstances and comply with Arizona law. We help clients focus on workable solutions rather than arbitrary percentages.