Quick Answer California enforces out of state family law orders through several federal and state laws. The Uniform Interstate Family Support Act (UIFSA), codified in California at Family Code sections 5700.101 through 5700.903, governs interstate child and spousal support orders. The Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA), codified at California Family Code sections 3400 through 3465, governs interstate child custody orders. Federal law including the Full Faith and Credit for Child Support Orders Act at 28 U.S.C. section 1738B requires states to enforce other states’ child support orders. To enforce an out of state order in California, the order must typically be registered with the California court. Once registered, the order has the same force as a California order. Modification jurisdiction is more complex; usually the state that issued the order retains continuing exclusive jurisdiction unless specific requirements are met. Working with the Department of Child Support Services or an attorney experienced in interstate cases is important.
Table of Contents
Why Interstate Enforcement Matters
American families increasingly cross state lines. Parents move for work, family, or other reasons. Children spend time in multiple states. Property exists across state borders. When family law orders need enforcement, the orders may have been entered in one state but require enforcement in another.
Without effective interstate enforcement, the right to a court order would be meaningless when the obligated party moves to another state. Parents could escape support obligations by relocating. Custody orders would be unenforceable across state lines. The federal and uniform laws provide the framework for ensuring orders are honored regardless of where the parties live.
UIFSA for Support Orders
The Uniform Interstate Family Support Act (UIFSA) provides the framework for interstate enforcement of support orders. UIFSA is codified in California at Family Code sections 5700.101 through 5700.903. A board-certified family law specialist experienced in interstate cases can help navigate the complexities.
UIFSA’s Goals
UIFSA establishes uniform rules for:
- Determining which state has jurisdiction to establish support orders
- Determining which state has jurisdiction to modify orders
- Establishing procedures for interstate enforcement
- Coordinating activities between state child support agencies
- Ensuring full faith and credit for child support orders
UIFSA Applies to
UIFSA applies to:
- Child support orders
- Spousal support and alimony orders
- Determinations of parentage
- Direct income withholding across state lines
- Enforcement actions involving multiple states
UCCJEA for Custody Orders
The Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA) governs interstate child custody orders. UCCJEA is codified in California at Family Code sections 3400 through 3465.
UCCJEA Principles
Key UCCJEA principles include:
- Home state jurisdiction for initial custody determinations
- Continuing exclusive jurisdiction in the state that issued the original order
- Emergency jurisdiction when a child is in immediate danger
- Prohibition on conflicting custody orders from different states
- Procedures for resolving jurisdictional disputes
Home State Definition
UCCJEA defines home state as the state where the child has lived with a parent for at least 6 consecutive months immediately before the proceeding (or since birth for children under 6 months). The home state has primary jurisdiction over initial custody determinations.
Required UCCJEA Declaration
California Family Code section 3409 requires a UCCJEA declaration (Form FL-105) in every custody case. The declaration documents the child’s residency history and any prior custody orders. This helps prevent conflicting interstate orders.
Federal Full Faith and Credit
Federal law reinforces state laws on interstate enforcement. The Full Faith and Credit for Child Support Orders Act at 28 U.S.C. section 1738B requires:
- States must give full faith and credit to other states’ child support orders
- Only one state’s child support order can be in effect at a time
- Specific rules govern which state has modification jurisdiction
- States must use UIFSA procedures for interstate enforcement
The Parental Kidnapping Prevention Act at 28 U.S.C. section 1738A provides similar full faith and credit requirements for custody orders. These federal laws ensure consistent treatment of interstate orders nationwide.
Registering Out of State Orders
To enforce or modify an out of state order in California, the order must typically be registered with a California court.
Registration Process
The process for registering an out of state order:
- Obtain a certified copy of the order from the issuing state
- Complete the appropriate California registration form
- File the registration request with the California family court
- Pay the filing fee or apply for fee waiver
- Notify the other party of the registration
- Other party has 20 days to object to registration
- If unopposed, the order is registered and confirmed
- If opposed, the court holds a hearing
Required Forms
Forms typically required for registration:
- FL-580: Registration of Out of State Custody Order
- FL-585: Notice of Registration of Out of State Custody Order
- DCSS forms for support order registration
- Certified copy of the original order
- Affidavits regarding the order and its current status
Grounds for Objection
The other party can object to registration on limited grounds:
- The order was not entered by a court with jurisdiction
- The order was obtained by fraud
- The order has been vacated, suspended, or modified
- The order is not the most recent order
- Statute of limitations issues
- Inadequate notice of the original proceeding
Enforcement After Registration
Once an out of state order is registered in California, it has the same force as a California order. All California enforcement remedies are available:
- Wage garnishment through income withholding orders
- Bank account seizures
- License suspension
- Tax refund interception
- Real property liens
- Civil and criminal contempt
- Custody enforcement under UCCJEA
The Department of Child Support Services can assist with enforcement of registered support orders the same as with California orders.
Modification of Out of State Orders
Modifying an out of state order is more complex than enforcement. The general rule is that the state that issued the original order has continuing exclusive jurisdiction to modify, but specific exceptions apply.
Child Support Modification
Under UIFSA, California can modify an out of state child support order only if:
- The child no longer lives in the issuing state, AND
- Both parents no longer live in the issuing state, AND
- The party seeking modification is not a California resident OR the other party consents to California jurisdiction
These requirements ensure that the issuing state’s continuing exclusive jurisdiction is respected when appropriate connections to that state still exist.
Custody Modification
Under UCCJEA, California can modify an out of state custody order when:
- The issuing state has lost continuing exclusive jurisdiction (no significant connection remains), AND
- California is the new home state of the child, AND
- Other UCCJEA requirements are met
Spousal Support Modification
Spousal support modification follows similar rules to child support under UIFSA. The issuing state’s continuing exclusive jurisdiction is respected unless the parties and issues no longer connect to that state.
Continuing Exclusive Jurisdiction
Continuing exclusive jurisdiction (CEJ) is a key concept in interstate cases. The state that issued the original order generally retains exclusive authority to modify it, even if the parties move.
How CEJ Continues
The issuing state retains CEJ as long as:
- The child still lives in the issuing state, OR
- Either parent still lives in the issuing state, OR
- The parties consent to continuing jurisdiction in that state
How CEJ Can Be Lost
The issuing state loses CEJ when:
- Neither the child nor either parent lives in the issuing state
- Both parents and the child have substantial connections to a new state
- The parties agree to transfer jurisdiction
Determining whether CEJ has been lost requires careful analysis of the specific facts. Premature attempts to modify in a new state can be challenged and overturned.
International Enforcement
International family law enforcement is significantly more complex than interstate enforcement. The Hague Convention on the Civil Aspects of International Child Abduction provides procedures for return of internationally abducted children. The Hague Convention on the International Recovery of Child Support and Other Forms of Family Maintenance provides procedures for international support enforcement.
International cases typically require:
- Specialized attorneys familiar with international family law
- Coordination with foreign authorities
- Compliance with international treaty procedures
- Specialized procedures for service and notice
- Recognition of foreign judgments under specific rules
International family law issues are beyond the scope of this article. Anyone facing international enforcement issues should immediately consult with an attorney experienced in international family law.
Common Interstate Scenarios
Parent Moves with Children
When a parent moves to California with children from another state, the existing custody order generally continues to apply. The order should be registered in California for enforcement purposes. Modification requires specific UCCJEA analysis based on home state and continuing exclusive jurisdiction.
Support Obligor Moves Out of State
When a support obligor moves out of California, the California order continues to apply. The receiving state must enforce the California order. The California Department of Child Support Services coordinates with the other state’s child support agency.
Support Recipient Moves Out of State
When a support recipient moves out of California, the order remains a California order. Enforcement can occur from the new state through UIFSA procedures. The recipient does not need to modify the order simply because of the move.
Both Parents Move Out of State
When both parents move out of California, California may lose continuing exclusive jurisdiction. The new state where parents and children have established residence may eventually assume jurisdiction to modify the order.
Working with DCSS
The Department of Child Support Services (DCSS) is the primary resource for interstate support enforcement. DCSS provides:
- Free services to establish, enforce, and modify support orders
- Coordination with other states’ child support agencies
- Automated systems for interstate enforcement
- Wage garnishment, license suspension, and other enforcement tools
- Specialized expertise in UIFSA procedures
San Bernardino County DCSS can be reached at (866) 901-3212. Working with DCSS is free for parents seeking establishment or enforcement of child support, regardless of income level.
Frequently Asked Questions
Q: What is UIFSA?
A: The Uniform Interstate Family Support Act (UIFSA) is a uniform law adopted by all 50 states that governs interstate enforcement and modification of child and spousal support orders. UIFSA is codified in California at Family Code sections 5700.101 through 5700.903. UIFSA establishes uniform rules for which state has jurisdiction to establish support orders, which state has jurisdiction to modify orders, procedures for interstate enforcement, and coordination between state child support agencies. Combined with federal law including 28 U.S.C. section 1738B, UIFSA ensures that support orders are enforceable across state lines.
Q: How do I enforce an out of state child support order in California?
A: First, register the order with a California court. Obtain a certified copy of the order from the issuing state, complete California registration forms, file with the California family court, pay the filing fee, and notify the other party. The other party has 20 days to object on limited grounds. If unopposed or after a hearing if opposed, the order is registered and has the same force as a California order. The Department of Child Support Services at (866) 901-3212 can help with registration and enforcement of child support orders. Once registered, all California enforcement remedies apply including wage garnishment, license suspension, and contempt.
Q: Can California modify an out of state custody order?
A: Under UCCJEA, California can modify an out of state custody order only if the issuing state has lost continuing exclusive jurisdiction and California is the child’s new home state and other UCCJEA requirements are met. Generally, the issuing state retains jurisdiction as long as one parent or the child still lives there. If all parties have moved to California and significant time has passed, California may be able to assume modification jurisdiction. Premature attempts to modify in a new state can be challenged and overturned. The analysis requires careful examination of specific facts. Working with an attorney experienced in UCCJEA is important.
Q: What is continuing exclusive jurisdiction?
A: Continuing exclusive jurisdiction (CEJ) means the state that issued the original order generally retains exclusive authority to modify it, even if the parties move. Under UIFSA, the issuing state retains CEJ as long as the child still lives there, either parent still lives there, or the parties consent to continuing jurisdiction. CEJ can be lost when neither parent nor child lives in the issuing state, when both parents and the child have substantial connections to a new state, or when the parties agree to transfer jurisdiction. CEJ is a key concept ensuring that orders are not subject to constant relitigation as parties move between states.
Q: What is the difference between UIFSA and UCCJEA?
A: UIFSA (Uniform Interstate Family Support Act) governs interstate enforcement and modification of child and spousal support orders. UCCJEA (Uniform Child Custody Jurisdiction and Enforcement Act) governs interstate enforcement and modification of child custody orders. Both are uniform laws adopted by all 50 states. UIFSA is codified at California Family Code sections 5700.101 through 5700.903. UCCJEA is codified at California Family Code sections 3400 through 3465. The Acts work together for cases involving both support and custody. Federal law including 28 U.S.C. section 1738A and 28 U.S.C. section 1738B reinforces both Acts.
Q: Does my California order apply if I move to another state?
A: Yes. California family law orders remain valid and enforceable after you move. The receiving state must give full faith and credit to California orders. For enforcement in the new state, the California order should typically be registered with the new state’s courts using their version of UIFSA or UCCJEA procedures. The California Department of Child Support Services can assist with interstate enforcement for child support orders. Modification jurisdiction depends on continuing exclusive jurisdiction analysis. California typically retains jurisdiction to modify as long as the relevant parties maintain connections to California.
Q: How do I enforce a California order against someone who moved out of state?
A: Several options. Contact the Department of Child Support Services at (866) 901-3212 for child support enforcement; they coordinate with other states’ agencies for free. For other types of orders, work with an attorney to determine the appropriate enforcement procedure in the obligor’s new state. The California order typically needs to be registered in the new state for enforcement purposes. Once registered, the new state’s enforcement remedies apply. Federal full faith and credit ensures the California order will be enforced. Direct income withholding to an out of state employer may also be possible without registration in some cases.
Q: Can I use the Department of Child Support Services for free?
A: Yes. DCSS services are free for all parents seeking establishment, modification, or enforcement of child support, regardless of income level. The Department of Child Support Services has expertise in interstate enforcement procedures and coordinates with other states’ child support agencies. The Department of Child Support Services can establish orders, enforce orders through wage garnishment and other administrative tools, locate non paying parents, and coordinate interstate enforcement. For spousal support, custody, or other family law issues, you may need to hire a private attorney. The Department of Child Support Services in San Bernardino County is reached at (866) 901-3212.
Bottom Line
California enforces out of state family law orders through UIFSA (codified at California Family Code sections 5700.101 through 5700.903) for support orders and UCCJEA (codified at California Family Code sections 3400 through 3465) for custody orders. Federal full faith and credit laws including 28 U.S.C. section 1738B ensure interstate enforcement. To enforce an out of state order in California, the order must typically be registered with the California court. Once registered, the order has the same force as a California order. Modification jurisdiction is more complex; usually the state that issued the order retains continuing exclusive jurisdiction unless specific requirements are met. The Department of Child Support Services at (866) 901-3212 provides free services for interstate child support enforcement. For other interstate family law issues, working with an attorney experienced in UIFSA and UCCJEA is important.
If you are dealing with interstate family law enforcement, a free consultation with a board-certified family law specialist can help you understand the applicable laws and develop the right strategy.
About the Author
Donald Glen Haslam, Esq. is a Board-Certified Family Law Specialist by the California State Bar Board of Legal Specialization and a senior partner at Haslam & Thorne, LLP in Ontario, California. He has practiced family law exclusively for over 40 years, representing families throughout San Bernardino County and the Inland Empire. Reviewed by Brian George Thorne, Esq., Board-Certified Family Law Specialist.
Related Articles
- How to Modify Custody Orders in California: 2026 Complete Guide
- How to Modify Spousal Support in California: 2026 Complete Guide
- Move Away Cases in Divorce: California Rules and the LaMusga Factors (2026)
- Contempt of Court in Family Law: Complete 2026 California Guide
Disclaimer: This article is for general informational purposes only and does not constitute legal advice. Interstate family law involves complex federal and state law requiring specialized analysis. For advice specific to your situation, consult with a licensed family law attorney experienced in interstate cases. Reading this article does not create an attorney-client relationship with Haslam & Thorne, LLP.