Washington Child Support Guidelines (2026 Updates)
Washington's 2026 child support laws are designed to be predictable. This review explains how the state arrives at the support figure for one child at the $15,500 mark, providing clarity for the process in King County.
Breakdown of the $15,500 Calculation
Washington's 2026 schedule provides a specific line item for $15,500 net income. For families with one child, this dictates a $1,923 base obligation, though King County judges may deviate for cause.
High-Income Notice
Because your combined income of $15,500 exceeds the $12,000 statutory ceiling, the $1,923 base is a minimum starting point. Judges in King County, WA have discretion to increase support proportional to the family's standard of living. Want a complete breakdown including deviations and expenses? Calculate your full worksheet
Note: The 45% net income cap remains a vital legal defense.
The SSR and Low-Income Safeguards
The 2026 Washington schedule incorporates the $2,394 SSR. For a $15,500 income, the $1,923 obligation is subject to a check to ensure the payor isn't reduced to a net income below the poverty threshold.
Filing in King County Superior Court
In King County Superior Court, located in Seattle, child support orders based on a $15,500 combined income are filed with theKing County Superior Court clerk at 516 3rd Ave, Room E-609, Seattle, WA 98104. Filing fees inKing County are $314. Once filed, the presumptive$1,923/mo order for one child becomes the baseline unless either parent requests a deviation hearing.
Income Bracket Context
At $15,500/mo, this household falls in the upper income bracket of Washington's 2026 schedule — above the state median of $7,114/mo. At this level, courts have wider discretion to order above the presumptive $1,923, particularly for lifestyle-based deviation arguments in King County.
Deviation Likelihood in King County
High-income deviation arguments are frequently raised in King County at the $15,500 level. Since the schedule caps at $12,000 combined net income, the $1,923 figure is a floor — not a ceiling. Attorneys often argue for upward deviations based on the children's established standard of living and available parental resources.
Children-Specific Insight
For one child at $15,500/mo, the $1,923 obligation reflects Washington's base rate. Parents adding a second child to the order would see this figure rise to $2,966 — an increase of $1,043 — reflecting the additional resources required under the 2026 schedule.
Related Income Tiers
Parents earning slightly more than $15,500 — at $15,600/mo — would face a presumptive order of $1,933/mo for one child in Washington. Those earning slightly less at $15,400/mo would owe $1,914/mo. These neighboring brackets help illustrate how Washington's 2026 schedule scales support incrementally with income.
Application in King County Superior Court
While the 2026 economic schedule is uniform statewide, the King County Superior Court handles procedural enforcement. In King County, judges may require additional proof of income before finalizing the $1,923 order.
Calculation Summary & Requirements
Determining support for a $15,500 income in Washington is a multi-step process. While the 2026 tables set a $1,923 baseline for one child, the final order in King County considers deviations and the SSR.
Accuracy & Legal Status
While we strive for accuracy, these figures for $15,500 are for informational purposes. The 2026 guidelines are subject to change, and the King County Superior Court has the final authority on all support amounts.