You and your co-parent live in different states. Or maybe you recently moved — or are thinking about it. One of the most common questions we hear from clients navigating interstate family situations is: who actually gets to decide custody?
The answer isn’t as simple as “wherever the child lives.” Jurisdiction in custody cases is governed by a specific legal framework, and understanding it can save you thousands of dollars, months of confusion, and a whole lot of unnecessary conflict.
Here’s what you need to know.
What Is Jurisdiction — and Why Does It Matter in Custody Cases?
In family law, jurisdiction refers to a court’s legal authority to hear and decide your case. If a court doesn’t have jurisdiction, any order it issues can be challenged, overturned, or simply not enforced.
In custody disputes involving multiple states, two separate courts could theoretically want to take your case — and occasionally, two courts issue competing orders. This creates a legal mess that’s expensive and emotionally exhausting for families to untangle.
That’s exactly why lawmakers created a uniform system to prevent it.
The UCCJEA: The Law That Governs Interstate Custody Jurisdiction
The Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA) is the primary law that determines which state has the right to make custody decisions when families span state lines.
As of today, 49 states plus Washington D.C. and most U.S. territories have adopted the UCCJEA (Massachusetts is the notable holdout, though it has similar provisions). This broad adoption means the rules are consistent and predictable across most of the country.
The UCCJEA establishes a clear hierarchy of jurisdiction — courts must follow this order when determining whether they have authority over a custody case.
The Four Types of Jurisdiction Under the UCCJEA
1. Home State Jurisdiction (The Primary Rule)
The home state is the single most important factor in determining which court has jurisdiction. Under the UCCJEA, the home state is defined as:
The state where the child has lived with a parent (or person acting as a parent) for at least six consecutive months immediately before the custody proceeding is filed — or since birth, if the child is less than six months old.
Home state jurisdiction takes priority above everything else. If your child has lived in Maryland for six months or more before you file, Maryland is the home state and Maryland courts have jurisdiction — period.
Example: Maria and her two children relocate from Virginia to Maryland in January. By July, she files for custody. Maryland is the home state. Even if James, the other parent, files in Virginia the same week, Virginia must defer to Maryland.
The Six-Month Countdown Matters
What happens if the child just moved? If a child left the home state less than six months before a proceeding is filed, that state still has home state jurisdiction — as long as at least one parent still lives there.
Example: The Jones family lives in Maryland. Mom takes the kids and moves to Florida in March. Dad files for custody in Maryland in May. Maryland is still the home state because the kids lived there until recently, and Dad is still in Maryland.
Thinking about relocating with your children? Read our latest blog: Relocation and Effects on Custody: What Maryland Parents Need to Know
2. Significant Connection Jurisdiction (The Backup Rule)
If no state qualifies as the home state — for example, the child has moved recently and doesn’t yet have six months in the new state — a court may exercise significant connection jurisdiction if:
- The child and at least one parent have a significant connection to that state beyond mere physical presence, AND
- Substantial evidence about the child’s care, protection, training, and personal relationships is available in that state.
This is intentionally a high bar. Courts look at things like where the child’s school records, medical records, and extended family are located.
3. More Appropriate Forum / Inconvenient Forum
Even when a court has jurisdiction, it can decline to exercise it if another state would be a more convenient forum. Factors include:
- Domestic violence history
- Length of time the child has been in each state
- Distance between courts
- Financial circumstances of the parties
- Nature and location of evidence
- The child’s connections to each state
A judge may stay the proceedings and direct the parties to file in the other state if it determines that state is better positioned to hear the case.
4. Emergency Jurisdiction (Temporary Orders Only)
Any state where a child is physically present may exercise emergency jurisdiction — even if it’s not the home state — if:
- The child has been abandoned, OR
- The child or a sibling or parent has been subjected to or threatened with mistreatment or abuse
Emergency jurisdiction is temporary. The state that issues an emergency order must communicate with the home state court, and a permanent order must come from the appropriate jurisdiction under the regular UCCJEA analysis.
Practice tip: Emergency jurisdiction is not a loophole to avoid unfavorable rulings in your home state. Courts take a dim view of parents who manufacture “emergencies” to gain tactical advantage.
What Happens When Two States Both Claim Jurisdiction?
It happens — and it’s a nightmare when it does. Here’s how it gets resolved:
Simultaneous Proceedings
If custody proceedings are filed in two states at the same time, the courts are required to communicate with each other. The UCCJEA specifically mandates judicial communication between states in these situations. Typically:
- The court in the state without home state jurisdiction must yield
- If it’s a close call, judges confer and one may defer to the other
- The first court to assert jurisdiction often (but not always) prevails
Conflicting Orders
If two states have issued conflicting custody orders, courts look to which order was issued first and whether the issuing state had proper jurisdiction at the time. An order from a court without proper jurisdiction isn’t enforceable under the UCCJEA.
When Can Jurisdiction Change? Modifying an Existing Order
Once a court issues a custody order, it generally keeps exclusive, continuing jurisdiction as long as:
- The child or at least one parent continues to live in that state, OR
- The court hasn’t determined that neither the child nor any parent has a significant connection there anymore
What this means practically: If you divorced in Maryland and both you and your co-parent move to other states — and your children move with one of you — Maryland’s jurisdiction eventually fades. At that point, the child’s new home state can assume jurisdiction.
Modification jurisdiction is a nuanced area. If you’re dealing with an existing order from another state and want to modify it, get legal advice before you file anything. Our Divorce Resources page has additional guidance on post-divorce modifications, and our FAQ page covers common questions about separation agreements and custody in Maryland.
Special Situations: What About Military Families?
Military families face unique challenges because frequent relocations can make establishing a home state difficult. The UCCJEA has been interpreted in various ways regarding military deployments and temporary reassignments. Some key considerations:
- A military parent’s permanent duty station is typically considered their domicile for jurisdictional purposes
- A deployment does not automatically change jurisdiction
- Many states have enacted the Uniform Deployed Parents Custody and Visitation Act (UDPCVA) to address custody during deployment
If you’re a military family navigating custody across state lines, this is an area where experienced legal counsel is essential. Contact us to discuss your situation.
What About International Custody Disputes?
When custody disputes cross international borders — not just state lines — the Hague Convention on the Civil Aspects of International Child Abduction may apply, along with the UCCJEA’s provisions for international cases. This is complex territory that goes beyond the scope of this article, but the short answer is: act quickly, because international parental abduction cases are time-sensitive and legally complicated.
Practical Takeaways: What This Means for You
Here’s the plain-English summary of everything above:
✔ If your child has lived in the same state for six months or more, that state almost certainly has jurisdiction. File there. Maryland’s Circuit Courts handle family law matters at the county level — if Maryland is your home state, you’ll file in the circuit court of the county where the child or a parent resides.
✔ If you recently moved, the state you left may still have jurisdiction for up to six months — especially if your co-parent stayed behind.
✔ Don’t assume that moving to a new state gives you a tactical advantage. Courts see through this, and judges don’t like it.
✔ If you feel your child is in immediate danger, emergency jurisdiction exists — but it’s temporary. You’ll still need to address the underlying matter in the proper forum.
✔ If there’s already a custody order from another state, you generally need to go back to that court to modify it, unless both parents and the child have all moved away.
✔ Jurisdiction and venue aren’t the same thing. Even within the right state, you may need to file in a specific county.
How Mediation Can Help Interstate Custody Disputes
We’ve seen it time and again: when parents in different states go to court to fight over custody, the process is slow, expensive, and often leaves both sides — and most importantly, the kids — worse off.
Mediation offers a different path. Even in interstate situations, parents can participate in mediation to reach a parenting plan and separation agreement that both sides can live with, without leaving the outcome entirely in a judge’s hands. Once you’ve resolved the jurisdictional question (i.e., you know which state’s law will govern), a skilled mediator can help you build a sustainable custody arrangement.
Not sure what a parenting schedule should look like? Our blog post Custody Schedules: A Complete Guide for Divorcing Parents walks through the most common options and how to choose what works for your family.
At Jacobson Family Law, we offer divorce mediation services — including virtual sessions — that allow parents in different states to work through custody and parenting issues without flying across the country to fight in a courtroom. We also offer collaborative divorce for families who want attorney-guided support throughout the process. View our flat-fee packages to see what’s included.
Frequently Asked Questions
Have more questions? Visit our full FAQ page for answers on mediation, separation agreements, and more.
Can I file for custody in any state I want?
No. Jurisdiction is determined by law — specifically the UCCJEA — not by your preference. Filing in a state that doesn’t have jurisdiction will likely result in your case being dismissed or transferred.
What if my child was just born and we’ve never established a “home state”?
For children under six months old, the home state is the state where the child has lived since birth. If the child has lived in multiple states in their short life, the significant connection test applies.
My co-parent and I live in different states and we’ve never had a custody order. Where should I file?
File in the child’s home state — the state where the child has lived for the last six continuous months (or since birth if under six months). If you’re unsure or if the child recently moved, consult our team before filing anywhere.
Can a parent move to a new state to get a more favorable custody law?
Courts are aware of this tactic and do not look kindly on it. Jurisdiction is based on where the child has been living — not where a parent strategically relocates. Read more in our post on Relocation and Custody in Maryland.
My ex moved our child to another state without my consent. What do I do?
This situation may constitute custodial interference or even parental abduction depending on whether a custody order already exists. Contact us immediately. If there’s an existing order, you may be able to seek enforcement across state lines under the UCCJEA.
Does Maryland follow the UCCJEA?
Yes. Maryland adopted the UCCJEA, codified in the Family Law Article of the Maryland Code (§ 9.5-101 et seq.). Maryland courts follow the home state rule and the full UCCJEA framework.
The Bottom Line
Interstate custody is one of the more legally complex areas of family law, but the UCCJEA gives it a clear structure. In most cases, the child’s home state — where they’ve lived for the past six months — has jurisdiction. From there, the law fills in the gaps for edge cases, emergency situations, and modifications.
If you’re facing a custody dispute that crosses state lines, don’t try to navigate it alone. The jurisdictional decisions you make early in the process can determine where your case is heard — and that matters enormously.
At Jacobson Family Law, we help Maryland-area families navigate custody, co-parenting, and divorce without unnecessary drama. Whether you’re looking for mediation or need help understanding your rights, we’re here.
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