Court Forms: Petition to Modify Child Support

• Adjust Child Support Order
• Child Support Calculator
• Out of State Custody Orders
• Petition to Modify Child Support
• Temporary Family Law Order – Child Support (Divorce)
• WSCSS Schedule & Worksheets
WA State Self-Support Reserve
• Informal Family Law Trial

Form	Title	Download		Revised
Start the Case:
FL Modify 500	Summons: Notice about Petition to Modify Child Support Order			01/2022
FL Modify 501	Petition to Modify Child Support			01/2022
FL All Family 001	Confidential Information			07/2022
FL All Family 002	Attachment to Confidential Information (Additional Parties or Children)			07/2022
SCOMIS - Domestic and Other Case Types	SCOMIS - Domestic and Other Case Types			01/2023
WSCSS - Schedule	Washington State Child Support Schedule – definitions, standards, instructions, and economic table			01/2023
WSCSS - Worksheets	Washington State Child Support Schedule Worksheets			01/2019
WSCSS - Worksheets 3P	Washington State Child Support Schedule Worksheets – 3 Parent			01/2023
WSCSS - Attachment for RSA	Attachment for Residential Split Adjustment			05/2016
FL All Family 011	Sealed Financial Source Documents (Cover Sheet)			05/2016
FL All Family 131	Financial Declaration of (name): _______________			09/2016
FL All Family 107	Proof of Service by Mail			05/2016
...OR...
FL All Family 101	Proof of Personal Service			06/2020
All Civil 006	Email Service Agreement			01/2022
FL All Family 119	Agreement to Join Petition (Joinder)			05/2016
FL All Family 117	Service Accepted			07/2017
(If the other parent or non-parent custodian completes the Agreement to Join Petition or Service Accepted, or agrees to join the Petition by signing the agreement on the last page of the Petition, service of the Petition and Summons is not necessary.)
FL Modify 502	Response to Petition to Modify Child Support Order			10/2023
Complete the Case:
Hearing:
To schedule a hearing, use the court's form to schedule hearings, if there is one; otherwise, use the Notice of Hearing, form FL All Family 185.
FL All Family 185	Notice of Hearing			05/2016
FL All Family 112	Proof of Mailing or Hand Delivery (for documents after Summons and Petition)			01/2022
To present oral testimony at the hearings:
FL Modify 503	Motion to Allow Testimony (About Modifying Child Support)			05/2016
FL Modify 504	Response to Motion to Allow Testimony (About Modifying Child Support)			05/2016
FL Modify 505	Order on Motion to Allow Testimony (About Modifying Child Support)			05/2016
Finalize the case:
FL Modify 510	Final Order and Findings on Petition to Modify			01/2022
FL All Family 130	Child Support Order			07/2022

Note: Additional documents may be required by local county superior court rules.

Important: To obtain legal advice you should hire a lawyer (for “full service” representation or for “limited” representation) or, if you cannot afford one, contact a low cost or free legal service program. For a referral to a lawyer or a legal service program, call CLEAR (888) 201-1014. Your county may also have a courthouse facilitator who cannot provide legal advice, but who can offer limited assistance in completing necessary paperwork. This list of forms is not legal advice and is provided only for reference purposes.