The instructions say to use FL-350 if the parents have an agreement about child support. After both parents complete and sign it, it must be filed and approved by the court. A court case, such as a divorce case, must already be open. It cites Family Code section 4065.
When it is used
Agency cases and case registry
If the local child support agency is involved, a lawyer from that office must also approve and sign the agreement. If it is not involved, each parent must also complete and submit a Child Support Case Registry Form (FL-191) when filing.
Section by section
What each part asks
Use the current official form and its instructions. The descriptions below identify the questions without choosing answers for your situation.
Pages 1–2 · Support and finances
1–2 · Parents and support
Who agrees, who pays whom, the children, basic support, additional support by percentage or dollar amount, and the monthly total.
3 · Health insurance
Which parent provides health insurance for the child if available at no or reasonable cost.
4–7 · Financial information
A computer calculation printout, or each parent’s net monthly disposable income, parenting time and any hardships.
8–10 · Guideline amount
The guideline child support amount, and whether the parents agree to it or to a different amount, with the reasons.
Page 3 · Other orders, signatures and court order
11–14 · Other orders
Address and job changes, other agreements, earnings assignment through the State Disbursement Unit or a stay, and private collector fees.
15–18 · Statements and agency approval
The parents’ statements, FL-192 attached and incorporated, assignment to a county, and the agency lawyer’s approval.
Signatures and 19 · Court order
All parties sign; the court orders the agreed items.
Before you file
Common filing problems to check
These checks come from the official form and instructions. They are not a ranking of rejection reasons; the court decides whether a filing meets its requirements.
FL-192 is not attached, although item 16 says it must be attached and is incorporated into the order.
Item 8 (the guideline amount) is blank; the form says you must complete it and item 9 or 10.
A lower agreed amount is used without the statements item 10 requires.
The agency lawyer does not sign when support has been assigned to a county or public assistance is pending.
E-file it
How to e-file FL-350 with Legal Hub Group
Legal Hub Group is a certified e-filing service provider for California courts. Availability depends on the live court, case type, document type and whether the case is new or existing.
1
Confirm the court
Check the current court and case-type list. A court must support the particular filing; this guide does not make every form available in every county.
2
Upload and check
Upload the finished papers and their attachments. Lexary checks them for common filing problems. Review the documents and the results before continuing.
3
Review the filing and fees
Confirm the case, document types and payment choice. Review every fee shown before submitting.
4
Submit and track the answer
The court reviews the filing. Keep the court’s acceptance and returned copy, or read its rejection notice before deciding what to do next.
$14.99 Legal Hub Group fee per e-filing, plus applicable court and court-system fees. Each fee is shown before submitting.
E-service is included free where available. No subscription. E-filing and service of opening papers are separate requirements.
No. The form says it must be signed by all parties and the court to be effective.
Can a below-guideline agreement be changed later?
The form’s notice says an order below the guideline can be modified without showing a change of circumstances; an order above the guideline needs a change of circumstances.
Not legal advice. This page explains public filing information. It does not tell you what to put in your own case. Legal Hub Group is a certified e-filing service provider for California courts, not a law firm.
Information checked as of October 2026. Rules, form revisions and provider prices can change. The court decides whether to accept a filing.
