A 60/40 custody schedule is a "physical custody" arrangement. Physical custody covers where the child actually lives, separate from legal custody, which covers decision-making. In a 60/40 split, one parent has the child about 60% of the time, and the other has about 40%. Over a full year, that's roughly 219 nights for one parent and 146 for the other.
The most common pattern is the 4-3 schedule. One parent has the child for four days, the other for three, repeating weekly. Most practical 60/40 arrangements are some variation of this 4-3 split rather than a wholly custom rotation.
Beyond the standard 4-3 pattern, a few variations show up regularly:
Here's how 60/40 compares to the other common ratios in nights per year:
There's no formula that hands out a 60/40 split automatically. Courts apply a "best interest of the child" standard and weigh a state-specific list of factors. Illinois evaluates 17 factors for parenting time under 750 ILCS 5/602.7. One factor: how much caretaking each parent has handled in the prior 24 months. Florida applies a 20-factor test under Fla. Stat. § 61.13(3), covering everything from school ties to each parent's caregiving history. Georgia applies a similar 17-factor test under O.C.G.A. § 19-9-3, with no presumption favoring any particular custody arrangement.
Overnight counts also feed into most states' child support guidelines. A parent with 40% of the parenting time will often receive somewhat more support consideration than they would under a more lopsided split. The exact adjustment depends on both parents' incomes and the specific guideline worksheet your state uses. A family law attorney can run the actual numbers rather than estimate them generically.
The right fit depends less on hitting a specific percentage and more on which pattern the family can actually sustain.
All 10 of Marble's active states apply their own best-interest factor list and their own child support guideline formula. None of them tie a "joint custody" label to a specific overnight or percentage number, but several do use overnight thresholds to adjust child support calculations. That variation is exactly why a local attorney's read matters more than a general rule of thumb.
A 60/40 schedule usually gets worked out by agreement rather than handed down by a judge, but that's exactly when it helps to have someone checking the details. A family law attorney can help in three ways:
Marble matches you with an experienced family law attorney at a fixed price, so you'll know exactly what this costs before any work begins. You manage your case from your phone and stay in direct contact with your attorney throughout.
A 60/40 schedule is often the practical middle ground between an even 50/50 split and the daily logistics of actual work and school schedules. What matters most isn't hitting an exact percentage. It's landing on a rotation both parents can reliably follow.
If you're weighing a 60/40 arrangement, or your current schedule isn't working the way it looks on paper, a family law attorney can help. They can help you build something that actually fits your family.
Disclaimer: This article is for general informational purposes only and is not legal advice. Laws vary by state and change over time, and your situation may differ from the examples described here. For advice about your specific circumstances, consult a licensed attorney in your state.
