Washington Child Support Guidelines (2026 Updates)
The transition to a dual-household structure relies on the accurate calculation of support based on your combined net income of $300. In King County, WA, this follows the Income Shares Model to benefit one child.
Breakdown of the $300 Calculation
For a combined income of $300, the 2026 guidelines set the presumptive support for one child at Court Discretion. This ensures the transfer payment fairly reflects the total resources available to the family.
Low-Income Protective Measures
For families with a combined monthly income of $300, Washington's 2026 guidelines trigger automatic poverty protections. At this level, the standard Court Discretion obligation is often reduced to the statutory minimum of $50 per child per month. Want a complete breakdown including deviations and expenses? Calculate your full worksheet
- SSR Protection: Approximately $2,394 reserve is strictly applied.
- Statutory Minimum: Usually $50 per child per month.
- Deviation Probability: High at the $300 tier.
The SSR and Low-Income Safeguards
The child support formula for $300 includes the SSR protection. For 2026, this is $2,394. It guarantees the parent paying Court Discretion isn't left with less than $2,394 to cover their own basic rent and food.
Filing in King County Superior Court
In King County Superior Court, located in Seattle, child support orders based on a $300 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 presumptiveCourt Discretion/mo order for one child becomes the baseline unless either parent requests a deviation hearing.
Income Bracket Context
At $300/mo, this household falls in the lower income bracket of Washington's 2026 schedule — below the state median of $7,114/mo. At this level, SSR protections and low-income deviations are more likely to influence the final order than the presumptive Court Discretion figure.
Deviation Likelihood in King County
Deviation requests are very common at the $300 income level in King County. Because Court Discretion at this tier frequently conflicts with the $2,394 SSR floor, judges routinely reduce orders to the $50/child statutory minimum. Parents at this income level should come prepared with full financial documentation.
Children-Specific Insight
For one child at $300/mo, the Court Discretion obligation reflects Washington's base rate. Parents adding a second child to the order would see this figure rise to $0 — an increase of $0 — reflecting the additional resources required under the 2026 schedule.
Related Income Tiers
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 Court Discretion order.
Calculation Summary & Requirements
In summary, the 2026 guidelines for $300 provide a clear expectation of Court Discretion for one child. While King County rules add complexity, the $300 baseline remains the most important factor.
Accuracy & Legal Status
DSHS and the King County Superior Court are the final authorities on support orders. These 2026 $300 and Court Discretion estimates for one child help explain the general legal framework in King County, WA.