Washington Child Support Guidelines (2026 Updates)
Calculating support for one child when the combined net income is $2,500 involves more than a simple table lookup. Factors like the Self-Support Reserve and local Benton County rules often influence the final order.
Breakdown of the $2,500 Calculation
With a combined $2,500 per month, parents are expected to provide $543 in basic support for one child. The 2026 rules split this obligation based on each parent's proportional share of the $2,500.
Standard Mid-Income Calculation
Your $2,500 income falls within the standard economic schedule. This means the $543 figure is the presumptive legal standard. Want a complete breakdown including deviations and expenses? Calculate your full worksheet
Presumptive Amount
$543
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 $543 would leave the payor with less than $2,394, the court may reduce the obligation for fairness.
Filing in Benton County Superior Court
In Benton County Superior Court, located in Prosser, child support orders based on a $2,500 combined income are filed with theBenton/Franklin Superior Court clerk at 7122 W Okanogan Pl, Bldg A, Kennewick, WA 99336. Filing fees inBenton County are $250 - $314. Once filed, the presumptive$543/mo order for one child becomes the baseline unless either parent requests a deviation hearing.
Income Bracket Context
At $2,500/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 $543 figure.
Deviation Likelihood in Benton County
At the $2,500 level, deviation requests are less common but still possible in Benton County. The most frequent grounds are extraordinary healthcare costs, shared custody arrangements, or documented debts. The presumptive $543 is upheld in the majority of standard cases at this income tier.
Children-Specific Insight
For one child at $2,500/mo, the $543 obligation reflects Washington's base rate. Parents adding a second child to the order would see this figure rise to $834 — an increase of $291 — reflecting the additional resources required under the 2026 schedule.
Related Income Tiers
Parents earning slightly more than $2,500 — at $2,600/mo — would face a presumptive order of $565/mo for one child in Washington. Those earning slightly less at $2,400/mo would owe $521/mo. These neighboring brackets help illustrate how Washington's 2026 schedule scales support incrementally with income.
Application in Benton County Superior Court
While the 2026 economic schedule is uniform statewide, the Benton/Franklin Superior Court handles procedural enforcement. In Benton County, judges may require additional proof of income before finalizing the $543 order.
Calculation Summary & Requirements
Finalizing a support order at the $2,500 level requires attention to the 2026 guidelines. Since $543 is the starting point for one child, you can better prepare for the financial change in Benton County, WA.
Accuracy & Legal Status
This page provides a generalized calculation for a $2,500 monthly net income under 2026 rules. The $543 figure for one child is presumptive and may be adjusted for insurance or daycare in Benton County.