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Washington Parenting Time Calculator

Turn any residential schedule into overnights and percentages, and see what it may mean for child support

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Why Overnights Are the Number That Matters

RCW 26.09.187 and RCW 26.19.075

Parenting schedules get described in shorthand, every other weekend, week on week off, 5-2-2-5, but the parenting plan and the child support worksheet both come down to one unit: overnights per year with each parent. That figure describes the residential schedule, it is what the court reads when someone asks for a residential schedule deviation, and it is what changes when summer blocks and holidays are allocated.

This tool converts a schedule into overnights for each parent and the percentage split, then explains where that number sits under Washington law. Adjust for summer and holidays to see how a plan really divides the year rather than how it looks on a calendar.

There is no automatic credit in Washington

Unlike some states, Washington has no statutory table that converts overnights into a child support credit. The Legislature has considered one several times, most recently on the recommendation of the 2023 child support schedule work group, and the 2026 amendments did not add it. Instead, RCW 26.19.075(1)(d) lets the court deviate from the standard calculation when a child spends a significant amount of time with the paying parent, after weighing that parent’s increased expenses and the receiving parent’s decreased ones. The deviation is not available if it would leave the receiving household without enough to meet the child’s basic needs or if the child receives TANF. In practice, many Eastside attorneys treat roughly ninety overnights, about a quarter of the year, as the point where a request becomes realistic, and court orders are far more likely to include a residential credit than administrative orders from the Division of Child Support.

NWF Calculator: Parenting Time

Describe the regular residential schedule for the parent with less time, then add summer blocks and holiday adjustments. The calculator converts it into overnights per year and percentages, and explains what that number means for child support in Washington. It updates as you type. No contact details are needed to see it.

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Why Your Real Number May Differ

Where estimates meet reality

  • A residential schedule deviation is discretionary. The court must make written findings, and the parent asking for it needs evidence of the extra expenses that come with the time.

  • The deviation cannot leave the receiving household without enough to meet the children's basic needs, and it is unavailable when the child receives TANF.

  • Equal time does not mean no support. The parent with the larger obligation, usually the higher earner, normally still pays, and the deviation reduces rather than erases the transfer payment.

  • Holidays, school breaks and summer blocks often move the real total well away from the base rotation, which is why they are separate inputs here.

  • Where each parent has primary care of different children, support is calculated for each household and offset, a different exercise from a residential credit.

  • Residential time is decided on the best interests of the child under RCW 26.09.187 and 26.09.191, not by working backwards from a support figure.

Frequently Asked Questions

Parenting time calculator

How are overnights counted in Washington?

An overnight is a night the child spends in that parent’s care. The total across the year, out of 365, describes each parent’s residential time. A parenting plan states the regular schedule, then allocates holidays, school breaks and summer, and the final count is what a court or the Division of Child Support looks at when someone asks for a residential schedule deviation.

What is a standard parenting time schedule in Washington?

There is no legally standard schedule. Common arrangements range from every other weekend, about 52 overnights a year, through every other weekend with a midweek overnight, about 104, up to equal-time rotations such as week on week off, 5-2-2-5 or 2-2-3 at roughly 182 overnights each. What matters is the best interests of the children.

Does 50/50 parenting time mean no child support?

No. Equal time gives the court a reason to consider a residential schedule deviation, but support is still driven by the difference in incomes. A parent earning substantially more will usually still pay something with an equal schedule.

Is there a 90-overnight rule in Washington?

Not in the statute. Ninety overnights, about 25 percent of the year, is a practice benchmark many attorneys use for when a residential credit request is realistic. The law itself says only that the child must spend a significant amount of time with the paying parent, and the court decides case by case.

Can a parenting plan be changed?

Yes, though the standard depends on what you are changing. Minor adjustments to the schedule can be made on a lower showing, while changing the parent the child primarily lives with requires a substantial change of circumstances and a finding of adequate cause under RCW 26.09.260.

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An estimate is a starting point. A conversation with a Washington family law attorney is where it becomes a plan. Every conversation is confidential.

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