HowMuchChildSupport

Child support for 4 children in Washington

Washington guidelines effective January 1, 2026. Washington overview

For 4 children, with Parent A earning $60,000 and Parent B $40,000, Washington's guideline amount is $1,350 a month (Parent A pays Parent B).

This is the guideline amount, not a court order.

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Guideline child support

Choose your state and enter both incomes to see the guideline amount.

Child support for 4 children in Washington by income

Monthly guideline amount for 4 children by Parent A's and Parent B's yearly income; the children live mostly with Parent B (Parent A has 52 overnights a year).
Parent A incomeParent B $0Parent B $30,000Parent B $50,000Parent B $80,000
$20,000$200$200$200$200
$25,000$200$200$200$200
$30,000$200$200$200$200
$35,000$200$200$200$200
$40,000$419$419$419$419
$45,000$748$748$748$748
$50,000$1,077$1,077$1,077$1,027
$55,000$1,406$1,291$1,216$1,117
$60,000$1,735$1,381$1,294$1,197
$65,000$1,836$1,497$1,376$1,276
$70,000$1,896$1,587$1,450$1,341
$75,000$1,944$1,656$1,510$1,395
$80,000$2,016$1,726$1,587$1,450
$90,000$2,124$1,841$1,725$1,568
$100,000$2,196$1,962$1,859$1,715
$120,000$2,496$2,220$2,033$1,996
$150,000$2,796$2,480$2,438$2,409
$200,000$3,232$3,164$3,124$3,081
$250,000$3,892$3,810$3,766$3,711

Parenting time and child support for 4 children

Washington's guidelines don't adjust for parenting time; courts may deviate. Washington has no parenting-time formula. A court may deviate from the standard calculation when the children spend a significant amount of time with the paying parent, unless that would leave the other household unable to meet the children's basic needs.

How the number of children changes the amount in Washington

With Parent A earning $60,000 and Parent B $40,000, the guideline amount for 4 children is $1,350 a month, about 1.99 times the $679 for one child. Support rises with each child, but by less than the first child's amount, because the guidelines reflect how households share costs among children.

Washington uses the income shares model on net income. The economic table gives an amount for each child from the parents' combined monthly net income and the number of children; each parent owes their share of the total, and the parent the children don't live with pays theirs.

Frequently asked questions

How much is child support for 4 children in Washington on $50,000?

If Parent A earns $50,000 a year, Parent B earns $40,000 and the children live mostly with Parent B, Washington's guideline amount is about $1,077 a month (Parent A pays Parent B).

How much is child support for 4 children in Washington on $100,000?

If Parent A earns $100,000 a year, Parent B earns $40,000 and the children live mostly with Parent B, the guideline amount is about $1,913 a month (Parent A pays Parent B).

How much more is child support for 4 children than for one child in Washington?

At $60,000 (Parent B $40,000), the amount for 4 children is about 1.99 times the amount for one child: $1,350 against $679 a month.

Does equal parenting time change child support for 4 children in Washington?

With about equal parenting time and the same incomes ($60,000 and $40,000), the guideline amount is about $1,350 a month (Parent A pays Parent B), against $1,350 when Parent A has 52 overnights a year. Washington has no parenting-time formula. A court may deviate from the standard calculation when the children spend a significant amount of time with the paying parent, unless that would leave the other household unable to meet the children's basic needs.

Official sources and verification

Guidelines effective January 1, 2026. Verified against the official Washington sources on October 7, 2026. How we calculate →