Washington Child Support Guidelines (2026 Updates)
Calculating support for one child when the combined net income is $4,200 involves more than a simple table lookup. Factors like the Self-Support Reserve and local Franklin County rules often influence the final order.
Breakdown of the $4,200 Calculation
With a combined $4,200 per month, parents are expected to provide $867 in basic support for one child. The 2026 rules split this obligation based on each parent's proportional share of the $4,200.
Standard Mid-Income Calculation
Your $4,200 income falls within the standard economic schedule. This means the $867 figure is the presumptive legal standard. Want a complete breakdown including deviations and expenses? Calculate your full worksheet
Presumptive Amount
$867
Schedule Bracket
Standard Limit
The SSR and Low-Income Safeguards
A vital component of the 2026 system is the Self-Support Reserve (SSR), set at $2,394. If paying $867 would leave the payor with less than $2,394, the court may reduce the obligation for fairness.
Filing in Franklin County Superior Court
In Franklin County Superior Court, located in Pasco, child support orders based on a $4,200 combined income are filed with theBenton/Franklin Superior Court clerk at 1016 N 4th Ave, Pasco, WA 99301. Filing fees inFranklin County are $250 - $314. Once filed, the presumptive$867/mo order for one child becomes the baseline unless either parent requests a deviation hearing.
Income Bracket Context
At $4,200/mo, this household sits within Washington's standard mid-range bracket on the 2026 schedule, near the state median of $7,114/mo. The presumptive $867 for one child is typically applied as-is at this level, with fewer deviations than lower or higher income tiers.
Deviation Likelihood in Franklin County
At the $4,200 level, deviation requests are less common but still possible in Franklin County. The most frequent grounds are extraordinary healthcare costs, shared custody arrangements, or documented debts. The presumptive $867 is upheld in the majority of standard cases at this income tier.
Children-Specific Insight
For one child at $4,200/mo, the $867 obligation reflects Washington's base rate. Parents adding a second child to the order would see this figure rise to $1,320 — an increase of $453 — reflecting the additional resources required under the 2026 schedule.
Related Income Tiers
Parents earning slightly more than $4,200 — at $4,300/mo — would face a presumptive order of $877/mo for one child in Washington. Those earning slightly less at $4,100/mo would owe $857/mo. These neighboring brackets help illustrate how Washington's 2026 schedule scales support incrementally with income.
Application in Franklin County Superior Court
While the 2026 economic schedule is uniform statewide, the Benton/Franklin Superior Court handles procedural enforcement. In Franklin County, judges may require additional proof of income before finalizing the $867 order.
Calculation Summary & Requirements
Finalizing a support order at the $4,200 level requires attention to the 2026 guidelines. Since $867 is the starting point for one child, you can better prepare for the financial change in Franklin County, WA.
Accuracy & Legal Status
This page provides a generalized calculation for a $4,200 monthly net income under 2026 rules. The $867 figure for one child is presumptive and may be adjusted for insurance or daycare in Franklin County.