Out-of-State Custody and Support Orders in Washington: UCCJEA, UIFSA, and When Pierce County Can (and Cannot) Change Them

People search this topic after a PCS to JBLM, a new job in the Port of Tacoma warehouse belt, or a weekend exchange that started in Oregon and ended three hours late in Puyallup. The instinct is the same: 'we live here now, so Pierce County should fix the order.' That instinct is how parents pay a $310 filing fee on a petition the commissioner has to dismiss.

Washington does not have one 'out-of-state family law' statute. It has two uniform acts that do different jobs. The Uniform Child Custody Jurisdiction and Enforcement Act — the UCCJEA, Chapter 26.27 RCW — decides which state may enter or change a parenting plan, residential schedule, or visitation order. The Uniform Interstate Family Support Act — UIFSA, Chapter 26.21A RCW — decides which state may enter or change child support. A child-custody determination, by definition in RCW 26.27.021, does not include support. Mixing the two is the first way these cases go sideways.

This article is written for Pierce County and Puyallup families who already have an order from somewhere else, or who are about to file a first parenting case after a recent move. It is general education, not a prediction of your home state. If you already have a Washington parenting plan and the fight is a move with the children, start with the child relocation notice-and-objection guide. If the only question is the monthly transfer payment on a Washington order, use the child support modification guide.

The Competitor Shortcut That Gets People Dismissed

Marketing copy on this subject often treats 'in-state relocation and out-of-state relocation' as ordinary reasons to modify a Washington parenting plan, and waves at out-of-state decrees with a sentence about 'appropriate jurisdictional requirements.' That is not how the statutes work. An out-of-state move with children who already have a Washington plan is usually a Child Relocation Act problem under RCW 26.09.405–.560. An Oregon or California decree sitting in a moving box in South Hill is a UCCJEA and UIFSA problem. Those are not interchangeable filings, they do not use the same forms, and Pierce County cannot 'just take the case' because it is more convenient.

Parents also cannot pick the forum they prefer. Washington LawHelp's custody-jurisdiction guide (reviewed March 17, 2026) is blunt about that. File in the wrong state and the case can be dismissed after months of fees. File knowing the court lacked jurisdiction and the court can assess costs and attorney fees under RCW 26.27.271.

If There Is No Prior Order: Home State Comes First

When nobody has entered a custody order yet, RCW 26.27.201 is the exclusive basis for an initial child-custody determination. Physical presence of a parent, or personal jurisdiction over a parent, is not enough. The statute stacks four options, and home state is on top.

• Home state: the child lived with a parent (or a person acting as a parent) in Washington for at least six consecutive months immediately before the case was filed, counting temporary absences. If the child is younger than six months, home state is where the child has lived from birth. Washington also keeps a six-month 'hanging' home-state window after the child leaves, if a parent still lives here.
• Significant connection: only if no state has home-state jurisdiction, or the home state has declined because Washington is the better forum. The child and at least one parent must have ties beyond mere presence, and substantial evidence about care, school, medical providers, and relationships must be here.
• More-appropriate-forum: every court that would have home-state jurisdiction has declined in favor of Washington.
• Last resort: no court of any other state would have jurisdiction under those tests.

In re Marriage of Hamilton, 120 Wn. App. 147, 84 P.3d 259 (2004), is the Washington case that still gets cited for the fallback. Significant-connection jurisdiction is not a tie-breaker you argue while another state is still the home state. It opens only after home state is gone or has declined. A parent who arrives from Texas in January and files in Pierce County in March is usually in the wrong courthouse, even if the child is already enrolled at a Puyallup school. Waiting six months only works if nobody has started a case in the former home state in the meantime.

Every Washington parenting petition still has to tell the court this story on FL All Family 138, the Declaration about Child Custody Jurisdiction. Leaving the UCCJEA boxes blank, or checking 'home state' because that is where you want the case, is how an initial filing dies at the first commissioner's calendar. The same declaration belongs in a Washington parenting-plan case even when both parents already live here.

If Another State Already Entered the Plan: Exclusive Continuing Jurisdiction

Once a sister state has made a valid child-custody determination, the question is no longer 'where do we live now?' It is 'does that court still have exclusive, continuing jurisdiction?' Under RCW 26.27.211, the court that made the order keeps it until that court finds the child, the parents, and any person acting as a parent no longer have a significant connection and that substantial evidence is no longer there — or until a court of this state or another state finds that the child, the parents, and any person acting as a parent do not presently reside in the issuing state.

RCW 26.27.221 is the modification gate. Except for a temporary emergency order, Pierce County may not modify another state's custody determination unless Washington itself would have initial jurisdiction under the home-state or significant-connection prongs, and one of two things is also true: (1) the other state determines it no longer has exclusive continuing jurisdiction, or that Washington is a more convenient forum under RCW 26.27.261; or (2) a court here or there determines that the child, both parents, and anyone acting as a parent no longer live in the other state.

In re Custody of A.C., 165 Wn.2d 568, 200 P.3d 689 (2009), is the Washington Supreme Court case that still surprises people. Montana had entered the initial determination. Relatives who qualified as persons acting as a parent still lived in Montana. Montana had not declined. Washington could not modify. 'Person acting as a parent' is a defined term — physical custody for six months in the year before filing, plus a claim to legal custody — not a synonym for 'grandparent who visits.' If anyone in that category still lives in the issuing state, that state's exclusive continuing jurisdiction is usually still alive.

If the issuing state still has exclusive continuing jurisdiction, the practical path is often to ask that court to decline as an inconvenient forum so Washington can take the modification. RCW 26.27.261 lists the factors: domestic violence and which state can protect the parties, how long the child has been gone, the distance between courthouses, relative finances, any agreement about forum, where the evidence and the child are, each court's ability to hear the case promptly, and each court's familiarity with the facts. Washington courts communicate with the other court under RCW 26.27.101. That conference is how real interstate cases get decided. It is not a courtesy call you skip because the other parent 'won't cooperate.'

Emergency Jurisdiction Is Temporary on Purpose

RCW 26.27.231 lets a Washington court enter a temporary order if the child is present here and has been abandoned, or if an emergency is needed to protect the child because the child, a sibling, or a parent is subjected to or threatened with abuse. That is the door for a short Pierce County order when a parent arrives from another state with a child and a credible safety problem. It is not a way to skip six months of home-state time.

If another state already has a custody determination, or a case is pending there, the Washington emergency order has to specify a period the court considers long enough for the parent to get an order from the state that actually has jurisdiction. The Pierce County order lasts until that other order arrives or the period expires. The courts are required to communicate immediately. Pairing an emergency UCCJEA request with a protection order can be the right safety plan. Treating the emergency order as the new permanent parenting plan is how the other state's court later enters a conflicting order and the child is in the middle of two decrees.

Registration Enforces the Order. It Does Not Change It.

A California or Oregon parenting plan is already a court order. Washington still needs a local file before a Pierce County commissioner will treat it like one of ours for enforcement. RCW 26.27.441 is the registration statute. Washington LawHelp (reviewed February 17, 2026) walks through the same steps the pattern forms use.

1. Get a certified copy of the current out-of-state custody order from the clerk who entered it. You will also need a second ordinary copy. Do not unstaple the certified set.
2. File FL UCCJEA 801 (Request to Register) with FL UCCJEA 802 (Notice of Registration), a Confidential Information form, and the two copies of the order.
3. The clerk files it as a foreign judgment and court administration serves notice on the other parent or person acting as a parent.
4. The other side has twenty days after service to request a hearing. The only statutory contests are that the issuing court lacked UCCJEA jurisdiction, that the order has already been vacated, stayed, or modified by a court that had jurisdiction, or that the contesting party never got required notice in the original case.
5. If nobody timely contests, registration is confirmed as a matter of law. Confirmation cuts off later attacks on anything that could have been raised at registration.

Once registered, the determination is enforceable here the same way a Pierce County parenting plan is enforceable. If the other parent still will not follow the residential schedule, the next filing is usually FL UCCJEA 811 (Petition to Enforce), not a Washington petition to modify. Expedited enforcement, a pickup warrant, and fee-shifting live in Article 3 of the UCCJEA. Contempt of a registered order is a separate tool; it is not a substitute for checking whether Pierce County even has modification jurisdiction.

Registration is not a required first step to ask Washington to modify, if Washington actually has modification jurisdiction. King County's facilitator packet says that out loud. Pierce County practice still rewards having the foreign order in the clerk's system before you ask a commissioner to do anything with it. Do not confuse 'I registered it' with 'I can now rewrite Wednesday overnights.' Those are different sentences.

Unjustifiable Conduct: Taking the Child Here to Create a Case

RCW 26.27.271 tells a Washington court to decline jurisdiction if the person invoking it engaged in unjustifiable conduct, unless the other parents and persons acting as parents acquiesce, the court that should have the case says Washington is the better forum, or no other court would have jurisdiction. The typical fact pattern is a parent who removes a child from the home state, files in Pierce County, and hopes six months of school enrollment will launder the forum. The remedy can include staying the case until a proper proceeding is started elsewhere, plus costs, communication expenses, attorney fees, investigator fees, travel, and child care. Domestic-violence flight is not automatically 'unjustifiable.' Quietly relocating to beat the other parent to a courthouse usually is.

Child Support Is a Different Statute: UIFSA, Not the UCCJEA

Parents routinely file one Pierce County petition asking the court to 'fix custody and support' on an out-of-state decree. Support does not travel with the UCCJEA. RCW 26.21A.120 gives the issuing tribunal continuing, exclusive jurisdiction to modify its own child support order as long as that order is the controlling order and, at the time of filing, the issuing state is still the residence of the obligor, the individual obligee, or the child — unless the parties consent on the record to let another state take over.

Living in Puyallup, serving the other parent here, or having long-arm personal jurisdiction under RCW 26.21A.100 is enough to establish or enforce support. Subsection (2) of that same statute is explicit: those long-arm bases may not be used to modify another state's support order unless RCW 26.21A.550 or the foreign-order companion in .570 is met. Personal jurisdiction and modification jurisdiction are not the same thing.

Washington may modify a registered out-of-state support order, after notice and hearing, only in the lanes the uniform act actually opens:

• All-parties-here path (RCW 26.21A.560): every individual party now lives in Washington, and the child no longer lives in the issuing state. Then Pierce County can both enforce and modify, using Washington procedure and the Chapter 26.19 worksheets.
• Consent path (RCW 26.21A.550(1)(b)): Washington is the child's residence, or a party is subject to personal jurisdiction here, and all individual parties have filed consents in a record in the issuing tribunal for Washington to modify and assume continuing, exclusive jurisdiction.
• Playaway path (RCW 26.21A.550(1)(a)): nobody — not the child, not the individual obligee, not the obligor — still lives in the issuing state; the petitioner is a nonresident of Washington; and the respondent is subject to personal jurisdiction here.

The playaway rule is the one that feels backwards. The parent who moved to Washington is often the respondent, not the petitioner. The parent who lives in a third state files here against the Washington resident. A Puyallup obligor who wants a lower number, while the children and the other parent still live in the California county that entered the order, generally has to go back to California (or get California to let go). Filing FL Modify 501 on that California order in Pierce County is how people start in the wrong building.

Two limits survive even after Washington validly modifies. First, Washington may not change any term that was non-modifiable under the issuing state's law, including the duration of support. Second, the law of the state that issued the initial controlling order governs how long the duty lasts. A California order that runs past age 18, or an Oregon order with a different emancipation rule, does not shrink to Washington's usual age-18 / high-school endpoint just because the worksheets are now done on the 2026 Washington table. Once Washington does issue a modifying order, Washington becomes the tribunal with continuing, exclusive jurisdiction going forward.

Registration of a support order is its own packet under RCW 26.21A.500 and following. The Division of Child Support can register and enforce an out-of-state order, and can petition to modify only if the UIFSA tests are met. DCS does not represent either parent. An administrative NFFR is still not a superior court Child Support Order. The calculation rules in the Washington child support guide apply to the number only after a tribunal with modification jurisdiction is actually rewriting it.

JBLM, Tribal Courts, and Orders from Another Country

A military family arriving at Joint Base Lewis-McChord with a North Carolina or Texas decree is the classic Pierce County UCCJEA file. PCS orders compress the calendar. They do not replace home-state analysis, they do not erase the issuing state's exclusive continuing jurisdiction, and they do not let a parent skip the Child Relocation Act on a Washington plan just because the Army wrote a report date. Temporary absences for deployment are generally counted as part of the six-month home-state period, not as a reset.

RCW 26.27.041 treats a tribe as a state for UCCJEA jurisdiction and enforcement — unless the case is governed by the federal Indian Child Welfare Act, in which case ICWA controls to that extent. A Puyallup Tribal Court or other tribal parenting order is not a 'foreign' decree you ignore because it did not come from a superior court. If the children are Indian children, talk to counsel before assuming Pierce County is even the right courthouse.

RCW 26.27.051 tells Washington courts to treat a foreign country as a state if the facts would support jurisdiction under the UCCJEA. Hague Convention return proceedings are a different track under RCW 26.27.411. An international move is not a local modification with extra postage.

Pierce County Practice: Fees, Forms, and the Wrong Petition

Most of these files are opened at Pierce County Superior Court in the County-City Building in Tacoma. The Pierce County Clerk's January 2026 fee schedule lists $310 to file an out-of-state custody decree (new-filing fee plus judicial, facilitator, and additional surcharges). Filing to enforce or modify is listed at the same $310 stack. Existing Pierce County cases can be cheaper; do not mail the statewide statutory $20 and assume the foreign-order file will open. Fee waivers exist.

The statewide pattern forms for out-of-state custody are the FL UCCJEA 801–815 series. Local practice still lives in PCLSPR 94.04. Motions on a commissioner's calendar generally have to be confirmed by noon two court days before the hearing, with a Family Law Hearing Information Form (Form T) listing every document you want read. A UCCJEA registration that nobody contests may never see a hearing. A petition to modify that should have been a registration, or a support modification that should have stayed in the issuing state, will.

• Custody/parenting, no Washington order yet: confirm home state before you file a petition for a parenting plan. Attach FL All Family 138.
• Custody/parenting, order from another state, you need it followed here: register (FL UCCJEA 801/802), then enforce (FL UCCJEA 811) or contempt. Do not file a Washington major-modification petition unless RCW 26.27.221 is actually satisfied.
• Custody/parenting, you need the plan changed: either get the issuing court to decline, or prove everyone who counts has left that state and Washington would have initial jurisdiction. Simultaneous cases in two states are a RCW 26.27.251 problem, not a race.
• Support: register for enforcement through DCS or the court. Modify only on the all-parties-here, consent, or playaway path. Expect the issuing state's duration rule to survive.

Interstate family law is a jurisdiction problem first and a parenting or worksheet problem second. If you are a Pierce County parent holding a decree from somewhere else, the useful question is not 'can a Puyallup family law attorney rewrite this?' It is 'which court still owns this file, and do we need that court to let go before Pierce County can do anything but enforce it?'