How Does 50/50 Custody Affect Child Support in Maryland?

 Posted on April 16, 2026 in Child Support

A lot of parents assume that equally shared custody cancels out the need for child support. In Maryland, though, the decision about how much parents need to pay towards the support of their children is more nuanced than this. Even in a true 50/50 arrangement, one parent may still owe the other monthly support payments.

If you're working through a custody or divorce case in 2026 and want to understand what you might pay or receive, a Glen Burnie child support lawyer can help .

Does Equal Custody Mean No Child Support Is Owed in Maryland?

Equal parenting time doesn't automatically end a child support obligation in Maryland. This is because many – perhaps most – cases involve one parent who makes more money than the other. Child support in Maryland is meant to give children the resources they would have had if their parents hadn’t divorced. A system that canceled child support if there was 50/50 custody would take financial resources from the child and be unfair to both parents.

Maryland uses an "income shares" model. That means both parents' incomes go into the calculation, not just the higher earners. Maryland Family Law Code Ann. § 12-204 outlines the amount of support that will be paid. This depends on the parents’ combined adjusted income and the number of children they are supporting.

Parents will pay support in proportion to their income; essentially, the higher earner will pay a larger percentage of the support amount. In a shared custody arrangement, however, an adjustment is applied to account for the fact that both parents are spending money on the child during their own parenting time. Shared custody is defined as each parent having the child at least 128 overnights per year,

How Does Maryland Calculate Support in a Shared Custody Case?

The shared custody calculation in Maryland involves a few more steps than a standard custody calculation. The factors used to determine the final support amount include:

• Both parents' gross incomes, adjusted for things like existing support obligations or alimony

• The basic child support obligation, based on the combined income and the number of children

• Each parent's percentage share of that combined income

• The number of overnights each parent has with the child

• Each parent's expenses for the child when they are with them, such as health insurance and childcare costs

The shared custody formula basically calculates a support amount for each parent as if the other had sole custody. It then offsets those two amounts against each other. The parent with the higher resulting support amount pays the difference to the other parent.

In practice, two parents with nearly identical incomes and a true 50/50 schedule may end up with little to no support changing hands. But if one parent earns $40,000 a year and the other earns $120,000, the higher earner will almost certainly still owe support even with equal parenting time.

Can Parents Agree to Waive Child Support in a 50/50 Arrangement?

Parents can sometimes agree to a different arrangement than what the guidelines would produce. But Maryland courts don’t always approve these agreements. A court can deviate from the guidelines if it finds that the standard amount would be inappropriate given the circumstances. The court must have actual, specific reasons for why the deviation is in the best interests of the child, though.

Regardless of what the parents decide, courts won’t approve an agreement that leaves a child without adequate financial support. Child support exists for the benefit of the child, not the parents, and it’s not a bargaining chip for parents to use. If parents want to propose a deviation, they should be prepared to show how it will accommodate the child's needs.

Call a Columbia, MD Child Support Lawyer Today

Because shared custody child support is more complex than other cases, it’s a good idea to have connections to someone who understands family law. At DM Family Law, you'll work directly with one attorney who takes a personal, client-centered approach to every case. With over 20 years of experience in Maryland family law, DM Family Law can walk you through exactly how the guidelines apply to your situation. Call our Glen Burnie child support attorney at 443-545-8100 to get started.