Does 50/50 Custody Mean No Child Support?
Not necessarily -- this is one of the most common misconceptions about child support. Equal parenting time changes the calculation, but it doesn't automatically zero it out.
Why Support Can Still Be Owed
Most state guideline formulas (the "Income Shares" model used by the large majority of states -- see how every state's model compares) factor in both parenting time and each parent's share of combined income. If both parents split time exactly 50/50 but one earns significantly more, that parent typically still owes support -- because the guideline is estimating what the child would have if the parents' income were pooled and shared proportionally, not just splitting the physical caregiving load evenly.
Real Overnight Thresholds, By State
Many states apply a different worksheet or an adjustment once shared time crosses a specific threshold -- and that threshold varies significantly. A few examples from this site's own verified calculators and guideline content:
- Maryland
- Shared-custody worksheet once both parents have 92+ overnights/year
- Florida
- "Substantial time-sharing" adjustment at 20%+ of overnights (~73/year)
- Ohio
- 10% reduction to a parent's own share at 90+ overnights/year
- Pennsylvania
- No reduction below 40% obligor overnights -- the schedule already assumes 30%
- North Carolina
- Worksheet B (shared) once each parent has 123+ overnights/year
- New Jersey
- Shared Parenting Worksheet once the other parent reaches 104+ overnights/year
- West Virginia
- Shared-parenting worksheet once the obligor has 110+ overnights/year
- Colorado
- Credit now starts from a parent's first overnight (effective March 1, 2026) -- no minimum threshold at all
Don't Assume -- Check Your State
Because the threshold, the formula, and even the definition of "shared custody" differ this much state to state, there's no single answer to "what does 50/50 custody mean for child support." Run the actual numbers on your state's calculator, or check its guidelines page, rather than assuming equal time means an even split of the bill.