Washington Child Support Resources

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Washington sets child support with a written guideline, and the official worksheet is how the math gets shown to the judge. Both parents' income normally goes into the calculation, along with things like health insurance for the children and child care costs.

The official guideline materials for Washington are linked below, together with the verified support documents and the financial paperwork the court usually asks both sides to file. Our own calculator can give you a working estimate before you fill in the official worksheet.

Official Washington child support resources

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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

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 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

eFileWA (participating counties) plus county systems (Multiple): Washington has no single statewide rule: each county decides whether and how you can e-file. The official eFileWA portal serves a growing list of courts and is open to people without lawyers, while big counties like King run their own systems. https://efilewa.tylertech.cloud/OfsEfsp/ui/landing

Verified official Washington support documents

These official documents are the worksheets and orders Washington uses to set and record child support.

Child Support Worksheets (WSCSS Worksheets), form WSCSS (Child Support), official document: https://www.courts.wa.gov/forms/documents/WSCSS_Worksheets_2026_01.pdf

Child Support Order (FL All Family 130), form FL All Family 130 (Child Support), official document: https://www.courts.wa.gov/forms/documents/FL%20All%20Family%20130%20Child%20Support%20Order_2021%2002.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.

Frequently asked questions

How is child support calculated in Washington?

Through the state's written guideline, applied on the official worksheet. The guideline uses income and a defined list of add-ons rather than a judge's rough guess, so filling the worksheet in honestly is the single most useful thing you can do. Open the official Washington guideline materials above for the exact method.

Can the court order a different amount than the guideline?

A judge can depart from the guideline in some situations, but the order normally has to explain why. Start from the guideline number and be ready to say plainly what makes your case different.

How much does it cost to file a family case in Washington?

Dissolution filing fee: ~$314. If you cannot afford the fee, ask the clerk about a fee waiver or indigency application; every state has a process for requesting one.