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 $3,100 mark, providing clarity for the process in Lewis County.
Breakdown of the $3,100 Calculation
Washington's 2026 schedule provides a specific line item for $3,100 net income. For families with one child, this dictates a $674 base obligation, though Lewis County judges may deviate for cause.
Standard Mid-Income Calculation
Your $3,100 income falls within the standard economic schedule. This means the $674 figure is the presumptive legal standard. Want a complete breakdown including deviations and expenses? Calculate your full worksheet
Presumptive Amount
$674
Schedule Bracket
Standard Limit
The SSR and Low-Income Safeguards
The 2026 Washington schedule incorporates the $2,394 SSR. For a $3,100 income, the $674 obligation is subject to a check to ensure the payor isn't reduced to a net income below the poverty threshold.
Filing in Lewis County Superior Court
In Lewis County Superior Court, located in Chehalis, child support orders based on a $3,100 combined income are filed with theLewis County Superior Court clerk at 345 NW Pacific Ave, Chehalis, WA 98532. Filing fees inLewis County are $250 - $314. Once filed, the presumptive$674/mo order for one child becomes the baseline unless either parent requests a deviation hearing.
Income Bracket Context
At $3,100/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 $674 figure.
Deviation Likelihood in Lewis County
At the $3,100 level, deviation requests are less common but still possible in Lewis County. The most frequent grounds are extraordinary healthcare costs, shared custody arrangements, or documented debts. The presumptive $674 is upheld in the majority of standard cases at this income tier.
Children-Specific Insight
For one child at $3,100/mo, the $674 obligation reflects Washington's base rate. Parents adding a second child to the order would see this figure rise to $1,032 — an increase of $358 — reflecting the additional resources required under the 2026 schedule.
Related Income Tiers
Parents earning slightly more than $3,100 — at $3,200/mo — would face a presumptive order of $696/mo for one child in Washington. Those earning slightly less at $3,000/mo would owe $652/mo. These neighboring brackets help illustrate how Washington's 2026 schedule scales support incrementally with income.
Application in Lewis County Superior Court
While the 2026 economic schedule is uniform statewide, the Lewis County Superior Court handles procedural enforcement. In Lewis County, judges may require additional proof of income before finalizing the $674 order.
Calculation Summary & Requirements
Determining support for a $3,100 income in Washington is a multi-step process. While the 2026 tables set a $674 baseline for one child, the final order in Lewis County considers deviations and the SSR.
Accuracy & Legal Status
While we strive for accuracy, these figures for $3,100 are for informational purposes. The 2026 guidelines are subject to change, and the Lewis County Superior Court has the final authority on all support amounts.