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FL Modify 503Mandatory

Motion to Allow Testimony (About Modifying Child Support)

Washington · Washington State Courts · Effective May 1, 2016

This form is a request to the court asking for permission to give testimony during a hearing about changing child support. It asks the court if testimony is needed to make a fair decision.

Open the official PDFfrom Washington State Courts

Where this fits in a case

After judgment

Stage: After judgment

This form is used when a party believes the court needs to hear testimony to make a fair decision about modifying a child support order. The person filing this motion must schedule a hearing for it.

Either party may file.

Common questions

Who should fill out this form?
The person filing this motion fills out the form, and they must sign a declaration stating the facts are true.
What must I do if I file this motion?
You must schedule a hearing for this motion. You also need to file your original documents with the Superior Court Clerk and serve copies on all other parties.
What happens if I don't agree with this motion?
The person receiving this motion can file a Response to Motion to Allow Testimony using form FL Modify 504.

Revision history

No changes recorded since we started tracking this form on October 9, 2026. The current version took effect May 1, 2016.

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