Skip to content
LitigationForms
WSCSS - ScheduleMandatory

Washington State Child Support Schedule – definitions, standards, instructions, and economic table

Washington · Washington State Courts · Effective June 1, 2026

This document provides the rules, definitions, and standards used to calculate child support in Washington State. It explains how to determine a basic support amount using an economic table and outlines what income sources must be included or excluded when calculating support.

Open the official PDFfrom Washington State Courts

Where this fits in a case

General & info

Information / general use — not tied to one step of a case

This schedule is used in any court proceeding where child support is being set, changed, or determined. It guides the calculation of support based on the parents' combined monthly net income and the number of children.

Either party may file.

Common questions

What is the basic child support obligation?
This is the monthly child support amount figured out using the economic table based on the parents' combined monthly net income and the number of children. This is the standard amount before any changes are considered.
Do I have to use this schedule?
The child support schedule must be used in all court proceedings where child support is determined or changed. Worksheets must be completed under penalty of perjury.
What kind of income counts?
Gross monthly income must include many sources like wages, commissions, and benefits. However, some sources, like income from a new spouse or certain assistance benefits, are specifically excluded.

Revision history

No changes recorded since we started tracking this form on October 9, 2026. The current version took effect June 1, 2026.

Related forms

  • WSCSS - Worksheets 3P

    Washington State Child Support Schedule Worksheets – 3 Parent

    This form is a detailed worksheet used to calculate child support obligations for three parents. It asks for information about income, deductions, expenses like healthcare and daycare, and household assets and debts.

    MandatoryWord
  • FL All Family 130

    Child Support Order

    This form is used by the court to write down the official order for child support payments. It asks the court to record if the order is temporary or final, and it collects details about the parents' incomes and any past support payments.

    MandatoryWord4 translations
  • FL All Family 138

    Declaration about Child Custody Jurisdiction (UCCJEA)

    This form is a declaration used to tell the court about where a child has lived and to ask the judge if the court has the right to make decisions about the child's parenting plan or where the child should live most of the time. It asks for details about the child's living history and any other court cases involving the child.

    MandatoryWord
  • FL All Family 139

    Information for Temporary Parenting Plan

    This form asks for detailed information needed by the court to create a temporary parenting plan. It asks about the children's living situations, the daily care provided by both parents, and the parents' work schedules.

    MandatoryWord5 translations
  • FL All Family 140

    Parenting Plan

    This form is used to create a Parenting Plan, which outlines rules for parents regarding their children. It asks parents to detail schedules, who makes big decisions, and how disagreements will be handled.

    MandatoryWord5 translations
  • FL All Family 141

    Supervised Visitation Acknowledgment

    This form is an acknowledgment used when a court orders supervised visits between parents and children. It requires signatures from the supervisor and the supervised parent to confirm understanding of the court order and the rules for the visits.

    MandatoryWord
  • FL All Family 148

    Order Appointing Parenting Evaluator/Investigator

    This form is used to create a court order that officially names a parenting evaluator or investigator for children in a case. It details the scope of the investigation and the requirements for the final report.

    MandatoryWord
  • FL All Family 171

    Motion for Immediate Order (Ex Parte) about a Hearing on Parenting Issues (Military Parent)

    This form is used by a military parent to ask the court for an immediate order without the other person present. It asks the court to schedule a hearing about parenting issues sooner than usual or to allow the parent to speak or present evidence electronically.

    MandatoryWord