HowMuchChildSupport

Child support for 1 child in Washington

Washington guidelines effective January 1, 2026. Washington overview

For 1 child, with Parent A earning $60,000 and Parent B $40,000, Washington's guideline amount is $679 a month (Parent A pays Parent B).

This is the guideline amount, not a court order.

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Guideline child support

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Child support for 1 child in Washington by income

Monthly guideline amount for 1 child by Parent A's and Parent B's yearly income; the child lives 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$50$50$50$50
$25,000$50$50$50$50
$30,000$50$50$50$50
$35,000$90$90$90$90
$40,000$419$419$419$419
$45,000$674$579$520$480
$50,000$762$615$570$521
$55,000$816$649$616$561
$60,000$857$683$661$600
$65,000$896$741$702$645
$70,000$927$787$737$684
$75,000$951$827$771$722
$80,000$987$855$806$748
$90,000$1,042$922$871$793
$100,000$1,081$986$934$846
$120,000$1,231$1,103$1,044$983
$150,000$1,387$1,243$1,204$1,161
$200,000$1,594$1,535$1,499$1,454
$250,000$1,876$1,804$1,767$1,707

Parenting time and child support for 1 child

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

For one child, the guideline amount ranges from $50 a month when Parent A earns $20,000 to $1,786 a month at $250,000, with Parent B earning $40,000.

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 1 child in Washington on $50,000?

If Parent A earns $50,000 a year, Parent B earns $40,000 and the child lives mostly with Parent B, Washington's guideline amount is about $581 a month (Parent A pays Parent B).

How much is child support for 1 child in Washington on $100,000?

If Parent A earns $100,000 a year, Parent B earns $40,000 and the child lives mostly with Parent B, the guideline amount is about $959 a month (Parent A pays Parent B).

How much more is child support for 1 child than for one child in Washington?

This page is for one child. With the same incomes, the guideline amount for two children is about $1,024 a month.

Does equal parenting time change child support for 1 child in Washington?

With about equal parenting time and the same incomes ($60,000 and $40,000), the guideline amount is about $679 a month (Parent A pays Parent B), against $679 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 →