Skip to content
LitigationForms
FL Parentage 331Mandatory

Petition for a Parenting Plan and/or Child Support

Washington · Washington State Courts · Effective July 1, 2025

This form is used to ask the court to approve a Parenting Plan and/or Child Support Order. It requires that parentage has already been legally established before this form can be used.

Open the official PDFfrom Washington State Courts

Where this fits in a case

Start a case

Stage: Start a case

This form is used when parents are asking the court for a Parenting Plan or Child Support Order, but only if the legal parentage of the child has already been decided by a court or an Acknowledgment of Parentage.

Usually filed by the person starting the case.

Common questions

Who should file this form?
The form is titled as a Petition, suggesting it is filed by one of the parents. It is used to ask the court for an order.
Can I use this form if we don't have a parenting plan yet?
The form states it should only be used if parentage has already been established by an Acknowledgment of Parentage or a court order.

Revision history

No changes recorded since we started tracking this form on October 9, 2026. The current version took effect July 1, 2025.

Related forms