Washington Parenting Plan Calculator
Washington uses Best interest; residential schedule required with 7 custody factors For 2026 planning, the Washington parenting plan calculator page starts with that Washington data point before adding your facts.
Washington uses best interest; residential schedule required under RCW § 26.09.184-26.09.191, with 7 extracted custody factors. The calculator turns schedules like 2-2-3 or week-on/week-off into overnight totals for your plan.
Washington — at a glance
- Core number: Washington uses Best interest; residential schedule required with 7 custody factors
- Authority: RCW § 26.09.184-26.09.191
- Local layer: 39 county inputs can affect timing and filing logistics.
- Decision point: Washington relocation rule: 60 days' notice; no fixed mile trigger listed
Important: This tool provides educational estimates only — not legal advice. Made For Law is not a law firm and is not affiliated with, endorsed by, or connected to any federal, state, county, or local government agency or court system. Calculator results are based on statutory formulas and publicly available fee schedules — not AI. Supporting content is AI-assisted and editorially reviewed. Results may not reflect recent legislative changes or your specific circumstances. Do not rely solely on these estimates — always verify with official sources and consult a licensed attorney before making legal or financial decisions. Full disclaimer
Run the Parenting Plan Calculator for Washington
The calculator below is pre-loaded with Washington (WA) rules. Your inputs stay in your browser — no account required.
Key Takeaways for Washington
- Custody framework. Best interest; residential schedule required under RCW § 26.09.184-26.09.191
- Parenting time math. 0 extracted overnight threshold; the calculator converts each schedule to annual overnights and percentages.
- Relocation rule. 60 days' notice; no fixed mile trigger listed
- Filing checklist. 3 extracted required steps: mediation, parenting plan, parenting class.
Custody framework in Washington
Washington uses best interest; residential schedule required and lists 7 custody factors in the source data tied to RCW § 26.09.184-26.09.191. The first factors include Strength, nature, and stability of child relationship with each parent, Agreements of parties, Each parent past and potential future performance of parenting functions, so your plan should explain those facts with dates, school calendars, and overnight counts.
Parenting time and support impact
The extracted WA config lists 0 extracted overnight thresholdfor child-support math and uses schedules with 52, 78, 156, or 182.5 overnights depending on the rotation. That's why a 2-2-3 plan can affect support differently from an every-other-weekend plan.
Washington relocation rules
Relocation planning starts with 60 days' notice; no fixed mile trigger listed, recorded in the WA source verified on 2026-03-30. Put the notice date, proposed address, and revised 12-month schedule in writing before you rely on the calculator output.
Filing requirements and court prep
The WA data flags 3 required filing steps: mediation, parenting plan, parenting class. It also lists the modification standard as "Adequate cause; best interest," so don't treat a new schedule as final unless it can survive that standard.
Washington sources used
- Washington Parenting Act: RCW § 26.09.184-26.09.191
- Source URL verified 2026-03-30: https://app.leg.wa.gov/rcw/default.aspx?cite=26.09.184
State-specific estimate overview
Washington cost and deadline signals is the right starting point because statewide law sets the baseline, while the facts of your parenting plan determine the actual risk band. Use the calculator before you compare attorney quotes, court options, or settlement choices.
Factors that affect the Washington estimate usually comes down to three inputs: the amount at stake, the deadline or statutory rule, and whether the matter can be resolved before a contested filing. The calculator keeps those inputs separate so the result is easier to challenge.
Neighboring state comparison
| State | Comparison signal | Source |
|---|---|---|
| Washington | Washington uses Best interest; residential schedule required with 7 custody factors | Current page data |
| Oregon | ORS § 116.173; 36 county inputs tracked | Washington compared with nearby states; State data file |
| Idaho | Idaho Code § 15-3-719; 44 county inputs tracked | Washington compared with nearby states; State data file |
County-level cost factors
County variation matters in Washington because clerk practices, hearing calendars, and local filing steps can change the time cost even when the statewide rule is fixed.
- King County: 2,269,675 residents, county seat in Seattle.
- Pierce County: 921,130 residents, county seat in Tacoma.
- Snohomish County: 827,957 residents, county seat in Everett.
- Spokane County: 539,339 residents, county seat in Spokane.
- Clark County: 503,311 residents, county seat in Vancouver.
Next steps before you decide
- Run the calculator with your current numbers and save the 2026 result.
- Compare the result with documents, notices, invoices, or deadlines already in hand.
- Use the estimate to prepare a focused consultation or filing plan before the next deadline.
Common state questions
What is the main Washington number in this Parenting Plan Calculator?
Washington uses Best interest; residential schedule required with 7 custody factors The calculator uses that point as the first Washington signal before it layers in user-entered facts.
Does the Washington Washington parenting plan calculator replace a lawyer?
No. It is a planning tool for comparing numbers, deadlines, and risk signals. Confirm RCW § 26.09.184-26.09.191 with an official source or a licensed professional.
Why do county details matter in Washington?
Washington has 39 county-level filing offices, court calendars, and local practices. Those local steps can change timing even when state law is the same.
What should I gather before using the Parenting Plan Calculator?
Gather the dates, amounts, documents, and court notices tied to your situation. The calculator is more useful when those inputs are specific rather than estimated.
What is the next step after the Washington estimate?
Washington relocation rule: 60 days' notice; no fixed mile trigger listed Use the result to decide whether to organize records, request a consultation, or file the next court or agency step.
Compare your inputs
Start with the free calculator, then confirm the next legal step with the ABA state-by-state lawyer directory.
Ready to see the numbers for your Washington situation?
Run the calculator above — it's free, no email required.
Try the calculator — freeSources cited inline. Last verified May 1, 2026. Statutes change — confirm with the official state bar before filing.