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FL Parentage 306Mandatory

Declaration about a Child's Best Interest

Washington · Washington State Courts · Effective January 1, 2019

This form is a declaration used in cases about parentage. It asks the person filling it out to state facts regarding a child's best interest when there is a challenge to who the child's legal parents are or when multiple people claim to be the parents.

Open the official PDFfrom Washington State Courts

Where this fits in a case

Hearing

Stage: Hearing

This form is used when there is a legal case involving parentage, such as a challenge to existing parent records or when multiple people are making claims about parentage.

Either party may file.

Common questions

Who fills out this form?
The form requires the person filling it out to declare that the facts provided are true under penalty of perjury.
What kind of cases use this form?
It is used in cases involving parentage, such as when there is a challenge to current legal parents or competing claims of parentage.

Revision history

No changes recorded since we started tracking this form on October 9, 2026. The current version took effect January 1, 2019.

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