If I Have My Children Half the Time, Do I Still Pay Child Support in New York?

By Pieter G. Weinrieb, Esq. · Divorce & family law attorney, Williamsville, NY · Updated July 17, 2026

The Rule That Surprises Everyone

Parents assume that equal time means no support — it’s one of the most common misconceptions I hear in consultations. New York’s Child Support Standards Act (CSSA) doesn’t work that way. The statute has no formula that offsets support based on overnights, and New York’s courts settled the question years ago: in a true 50/50 arrangement, following Bast v. Rossoff and Baraby v. Baraby, the parent with the higher income is deemed the non-custodial parent and pays guideline support to the other.

The logic is child-centered: support exists so the children live decently in both homes, and equal time doesn’t equalize household resources. Without support, the kids would live at two very different standards depending on whose week it is.

How the Number Is Calculated

The CSSA applies exactly as it would in any case: the statutory percentage — 17% for one child, 25% for two, 29% for three, 31% for four, no less than 35% for five or more — is applied to the parents’ combined income (up to the current $193,000 cap, which adjusts every two years), and the resulting obligation is divided between the parents pro rata by income. The higher earner pays their share to the lower earner. Run your own numbers with our child support calculator before you sit down to negotiate anything.

What Parents Can Agree To Instead

Here’s the part that matters if you’re settling: parents may deviate from the guideline amount — including agreeing to reduced or no support in a genuine 50/50 arrangement where incomes are close — but the agreement must do it correctly. New York requires the agreement to recite what the guideline amount would have been and the reasons for deviating, and a court must approve it. I have seen too many handshake deals and defective stipulations collapse years later, with arrears calculated as if the agreement never existed. If you’re going to deviate, do it in writing, with the required recitals, so it actually holds.

What Courts Look At on Deviation

Even without an agreement, a court can deviate from the guideline where the formula would be unjust or inappropriate — and a genuinely equal schedule with genuinely comparable incomes is a context where judges will listen. Expect the court to weigh each parent’s actual expenses for the children, who pays for health insurance, childcare, and activities, and the real financial picture in both homes. But deviation is the exception that must be justified, never the default.

Mistakes I See Parents Make

Trading money against time — “I’ll take less support if you take fewer overnights” corrodes both halves of the deal and courts see through it. Assuming the FAQ-level answer ends the analysis when one parent’s income is about to change. Signing a deviation without the CSSA recitals. And forgetting that support in New York runs to age 21 — a 50/50 schedule for a teenager still has years of support consequences attached.

A Western New York Note

Erie and Niagara County support magistrates apply this framework routinely and expect precise numbers, not impressions. If you’re negotiating a shared-custody arrangement in Buffalo, Williamsville, or anywhere in Western New York, bring the full support picture — add-ons included — to a lawyer before you sign anything.

Frequently Asked Questions

Who pays child support in a 50/50 custody arrangement in New York?

The higher-earning parent. Under Bast v. Rossoff and Baraby v. Baraby, when parenting time is equal, New York courts deem the parent with the higher income to be the non-custodial parent and apply the standard CSSA formula.

Can we agree to no child support if we share custody equally?

Only with a properly drafted agreement. New York lets parents deviate from the guideline — but the agreement must state what the guideline amount would have been and why you’re deviating, and a court must approve it. Informal arrangements don’t hold up, and arrears can accrue as if they never existed.

What if we earn almost exactly the same amount?

The formula still technically applies, but the net transfer is small and these are the cases where courts most readily accept an agreed deviation — documented with the required CSSA recitals.

How long does child support last in New York?

Until the child turns 21, unless the child is emancipated earlier. That’s true in shared-custody cases too — a 50/50 schedule doesn’t change the duration.

Related Questions & Resources

• How do I modify child support in New York?
• Child Support Calculator
• Child Support in New York (hub)
• Can I stop visitation if child support isn’t paid?
• How Child Support Is Calculated in NY

This page is general information about New York law, not legal advice for your situation. Every family is different — if this question is live in your life, talk to a family law attorney before you act.