Child Support Modification Petition in California

Federal & State Law Editorial TeamLast reviewed: April 2026

Start with the official California form

The canonical, court-accepted version of this form is published by the Superior Court (Family Law Division) where the order was issued. Search your county or district court's website for the current Child Support Modification Petition form before relying on any template. Forms are revised periodically — always confirm you have the current revision before filing.

Verify with your local court clerk before filing: local rules sometimes add cover-sheet, formatting, or service requirements beyond what the state-issued form shows.

California Requirements

Material change in circumstances OR a 3-year DCSS triennial review
Request for Order (FL-300) and Income & Expense Declaration (FL-150) required
Proof of service on the other parent and (if applicable) DCSS
Statewide guideline calculation (DissoMaster or XSpouse) typically attached
Modifications retroactive only to date of filing the modification request

Filing Location

Superior Court (Family Law Division) where the order was issued

Filing Fee

$60–$80 motion filing fee (waivable for low income via FW-001)

Statute Reference

Cal. Fam. Code § 3650–3692 (modification of support); § 4055 (statewide guideline)

How to Complete This Form

1Obtain a blank quitclaim deed form that complies with your state's requirements.
2Enter the full legal name and address of the grantor (the person transferring the property).
3Enter the full legal name and address of the grantee (the person receiving the property).
4Include the complete legal description of the property (obtained from the current deed or county records).
5Sign the deed in the presence of a notary public and any required witnesses.
6File the deed with the county recorder's office along with any required transfer tax forms and fees.
7Keep a copy of the recorded deed for your records.

Educational Example

Editorial Template (Not the Official Court Form)

This is an educational template showing the typical structure of a Child Support Modification Petition in California. It is not a court-validated form and should not be used in place of the official form issued by the Superior Court (Family Law Division) where the order was issued. Use this template only to understand what information you will need to assemble before completing the official form. Submitting this template instead of the official form may result in rejection by the court clerk.

Other Forms in California

Quitclaim Deed Power of Attorney Last Will and Testament Living Will / Advance Directive LLC Operating Agreement Residential Lease Agreement Eviction Notice Small Claims Court Complaint Divorce Petition Name Change Petition Warranty Deed Bill of Sale Prenuptial Agreement Rental Application Demand Letter Affidavit of Service Promissory Note Non-Disclosure Agreement Non-Compete Agreement

When to Talk to a Lawyer

Your situation involves complex legal issues or significant financial consequences.
You are unsure whether the form meets your state's specific requirements.

This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.