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Any Washington family case about money runs on financial disclosure. Both sides put their income, expenses, assets, and debts on an official form, and courts generally expect supporting paperwork such as tax returns, pay records, and account statements.
Getting this right matters more than most parents expect. A judge who cannot trust your numbers will not trust the rest of your case either. The official Washington affidavit sources and the court rules that define the exchange are linked below.
Official Washington disclosure resources
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Washington financial affidavit and disclosure forms (courts.wa.gov): The official source for the financial disclosure paperwork most Washington family cases ask both sides to complete. https://www.courts.wa.gov/forms/?fa=forms.static&staticID=14
Washington rules of procedure (Washington judicial branch): The court rules that control deadlines, service, and how family cases move in Washington. https://www.courts.wa.gov/court_rules
Washington family law forms (official index) (Washington judicial branch): The official statewide collection of Washington family law forms. When a direct document link stops working, this index is where the current version lives. https://www.courts.wa.gov/forms/?fa=forms.contribute&formID=31
Washington court self-help resources (Washington courts self-help): Official self-help information for people handling their own Washington family case, including instructions and plain-language guides. https://www.courts.wa.gov/newsinfo/?fa=newsinfo.self_help
Washington child support guideline resources (courts.wa.gov): Official Washington child support guideline materials, worksheets, or calculators. https://www.courts.wa.gov/forms/?fa=forms.contribute&formID=15
Verified official Washington disclosure documents
These official documents are the financial affidavits and disclosure paperwork Washington courts use.
Financial Declaration (FL All Family 131), form FL All Family 131 (Financial Disclosure), official document: https://www.courts.wa.gov/forms/documents/FL%20All%20Family%20131%20Financial%20Declaration_2016%2009%2026.pdf
Official link data for Washington was last verified June 2026. Report anything outdated through our contact page and we will re-check the official source.
An incomplete or inaccurate financial affidavit can be challenged, and it can cost you credibility with the judge for the rest of the case. If you are unsure about a number, say so on the form rather than guessing silently.
You can normally ask the court to order it, and courts can impose consequences for refusing. Keep your own disclosure complete and on time either way.
Rules on sealing financial documents vary by state and by court. Check the official Washington rules linked above, or ask the clerk, before you assume the filing is private.