One of the most common misconceptions we run into with parents going through a divorce or separation in the Syracuse area is this: “We have 50/50 custody, so neither of us pays child support, right?” Wrong. Genuinely, this gets parents into trouble more than almost any other assumption in family law, and we want to clear it up before it costs you.
New York’s approach to child support in shared custody situations is more nuanced than most people expect, and understanding how the system actually works can make a real difference in how you negotiate or litigate your case. Custody arrangements, including how parenting time is divided and what rights each parent holds, form the foundation of any child support calculation, which is why questions about custody and parenting time often need to be resolved before the financial picture becomes clear. Many parents mistakenly believe that equal or near-equal parenting time automatically means no child support will be awarded. New York law says otherwise.
How New York Calculates Child Support
In New York State, child support is calculated using a legal formula outlined in the Child Support Standards Act, or CSSA. This formula is designed to make sure support is fair and consistent, based on each parent’s income and the number of children involved. The Child Support Standards Act was developed to ensure that child support orders in New York State are fair and consistent. The goal is to give children the same standard of living they would have if their parents were together.
And another thing people often miss: the formula applies even in shared custody cases. Shared custody arrangements do not alter the scope and methodology of the Child Support Standards Act. The act states that the three-step statutory formula for calculating child support must be applied in all shared custody cases.
Who Gets Labeled the “Custodial Parent” When Time Is Split?
Under New York’s Child Support Standards Act, the court must first determine who the custodial parent is for purposes of calculating child support, even in shared or joint custody situations. So how does that get decided when both parents have the kids roughly equally?
The law focuses on who has physical custody of the child for a majority of the time when determining who is the custodial parent for child support purposes. The custodial parent is generally the parent who has physical custody of the child for a majority of the time. The noncustodial parent is the parent who has fewer overnights. This parent is generally responsible for paying child support.
Now, what happens in a true 50/50 situation, where overnights are exactly equal? The parent with the larger income would be deemed the non-custodial parent for purposes of calculating support under the CSSA. More precisely, if it is exactly 50/50, the higher-income parent is generally treated as the noncustodial parent for child support purposes.
So the short version: if you share time equally and earn more, you may still be writing a check every month. That surprises a lot of people sitting across from us at the conference table.
Can the Formula Ever Be Adjusted in Shared Custody Cases?
Yes, though courts in New York tend to be cautious about departing from the standard guidelines. No automatic reduction exists for shared custody under the CSSA.
That said, there is room for argument. A parent with higher income may be entitled to argue that their housing and living costs during their custody time reduce the expenses of the other parent. If proven, the court might find that applying the standard CSSA formula is unjust or inappropriate and may adjust the support amount accordingly.
Parents in this situation should document how their time with the child reduces the other parent’s expenses, such as food, utilities, and transportation. Saying “I have them half the time” is not enough. Courts want numbers, and they want documentation.
Up to this point, courts have been reluctant to find that the statutory formula produced a result that is unjust or improper, and therefore, to permit deviation. That reluctance is real, and it matters for how you build your case.
When Can a Child Support Order Be Changed?
Child support orders can be modified if either parent experiences a substantial change in circumstances, such as job loss, income changes, or significant shifts in the custody arrangement.
New York law generally recognizes three paths to modification. A parent must be able to show that there has been a substantial change in circumstances, or, unless the parties opted out, three years have passed since the order was entered, last modified, or adjusted, or either parent’s gross income has changed by 15% or more since then.
Child support modifications are not retroactive, meaning any changes made will typically only apply from the date of filing the modification petition forward. It is crucial to file for modification as soon as you become aware of the significant change in circumstances to avoid any potential financial burden. Waiting costs money. We encourage clients to reach out as soon as circumstances shift, because the court cannot go back and credit you for the months you waited.
What This Means for Parents in the Syracuse Area
Most people hire attorneys too late in this process. By the time they realize the formula isn’t working in their favor, they’ve already agreed to terms that are difficult to unwind. Getting guidance early, before you sign anything or agree to a parenting schedule, gives you the best chance of reaching an outcome that reflects your actual financial situation.
At DeRoberts Law Firm, we work with parents across the greater Syracuse area, including Onondaga County and surrounding communities, to navigate child support and shared custody issues with clarity. If your custody arrangement is changing, or if you’re working through a divorce and trying to understand what child support might look like, we’re here to help you think it through before decisions get locked in.