Washington Child Support Guidelines (2026 Updates)
Calculating support for 4 children when the combined net income is $3,600 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 $3,600 Calculation
With a combined $3,600 per month, parents are expected to provide $1,624 in basic support for 4 children. The 2026 rules split this obligation based on each parent's proportional share of the $3,600.
What This Number Means For You
If you're earning between $3,000 and $7,000 a month net, you're in the most common income range Washington courts see, and the 2026 economic table handles this tier cleanly. The SSR of $2,394 isn't a concern at this level, so the presumptive number you're looking at is likely close to what a commissioner would order. That said, close doesn't mean final — if you have your kids more than the standard custody split, a parenting time credit could meaningfully reduce what you pay. Run the full worksheet wizard to see how your actual custody schedule affects the bottom line before assuming the number on this page is what you'll owe.
Number of Children: What To Expect
When four or more children are involved, the Self-Support Reserve becomes a central issue in almost every case. A commissioner won't order a payment that leaves the paying parent unable to meet their own basic needs, regardless of what the table says.
What To Do After Seeing Your Number
The number on this page is a presumptive estimate — it's where the court starts, not necessarily where it ends. Don't let it panic you before you understand what's actually negotiable. Your parenting time schedule directly affects what you pay, and even a modest increase in overnight stays can produce a meaningful credit under Washington's residential time formula. Extraordinary expenses like daycare and health insurance premiums get added on top of the base, so your real total may be higher than what you see here. You also have the legal right to request a deviation if your circumstances qualify — high debt, other dependents, or a shared custody arrangement all count. Start with the worksheet wizard to see your full picture before your hearing.
Filing in Benton County Superior Court
In Benton County Superior Court, located in Prosser, child support orders based on a $3,600 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$1,624/mo order for 4 children becomes the baseline unless either parent requests a deviation hearing.
Related Income Tiers
Parents earning slightly more than $3,600 — at $3,700/mo — would face a presumptive order of $1,664/mo for 4 children in Washington. Those earning slightly less at $3,500/mo would owe $1,580/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 $1,624 order.
Calculation Summary & Requirements
Finalizing a support order at the $3,600 level requires attention to the 2026 guidelines. Since $1,624 is the starting point for 4 children, you can better prepare for the financial change in Benton County, WA.
Accuracy & Legal Status
This page provides a generalized calculation for a $3,600 monthly net income under 2026 rules. The $1,624 figure for 4 children is presumptive and may be adjusted for insurance or daycare in Benton County.