Complete the official 8-part AOC child support worksheet online. Auto-calculates all figures using the 2026 RCW 26.19 economic tables — free for all 39 Washington counties.
Washington State Guidelines (2026)
Date: 5/2/2026
Total Combined Net
$0.00
Presumptive Transfer (17)
Disclaimer: This is an automated estimate generated by WCSSC Pro based on RCW 26.19 guidelines. Actual court orders may vary. This worksheet summary is for informational and preparational purposes.
Fill in the mandatory fields below. Your live support estimate updates automatically as you input income and deduction details.
Enter income
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Input Data
Combined Net Income: $5,000 • Children: 2 • County: King
Calculated Estimate
Presumptive Basic Support Obligation
Logic Applied
In King County, courts use the standard Washington State economic table. For a combined net income of $5,000 with 2 children, the base presumptive support is $1,446. This amount is split proportionally between parents based on their respective incomes.
Want to know how we arrived at these figures?
Read our Editorial MethodologyThis wizard generates the official Washington State child support worksheet as required by RCW 26.19 and the 2026 Administrative Office of the Courts (AOC) guidelines. Complete all 8 parts to produce a court-ready calculation for any Washington county.
For a quick estimate without the full worksheet, use our Washington child support calculator. For county-specific guidance, see our King County child support guide or review the 2026 calculation methodology.
Legal Note: This wizard produces estimates based on the 2026 Washington State Child Support Schedule. All calculations are estimates only. Final orders are determined by a Washington State court.
Worksheet Questions
The Washington State child support worksheet is an official 8-part form required by RCW 26.19 that calculates the presumptive monthly child support obligation for both parents based on their combined net income, number of children, and additional expenses such as healthcare and daycare.
Yes. Washington courts require a completed child support worksheet for all child support orders, modifications, and reviews. The worksheet must follow the 2026 AOC format to be accepted by any Washington State court.
Part 1 requires each parent's monthly net income — meaning gross wages minus mandatory deductions including federal and state income taxes, FICA, mandatory union dues, and required retirement contributions. Do not enter gross income. Our wizard auto-calculates the mandatory deductions based on your inputs.
Yes. The same 8-part worksheet is used for new child support orders, modifications, and annual reviews. A substantial change in either parent's income of 15% or more typically qualifies for modification under Washington law.
This wizard produces calculations based on the official 2026 Washington State Child Support Schedule (RCW 26.19). The output figures match the AOC mandatory forms. However all calculations are estimates — final orders are determined by a Washington State court.
The quick calculator gives an instant estimate based on combined income and number of children only. The full 8-part worksheet accounts for healthcare costs, daycare, educational expenses, parenting time credits, and existing child support obligations — producing a complete court-ready figure.