California Form FL-191 is the Child Support Case Registry Form, and you fill it out by entering the case number, court details, and the full personal, employment, health insurance, and contact information for both parents — then filing it with the court clerk every time a child support order is entered, modified, or your information changes within 10 days. The form feeds California’s statewide Child Support Case Registry so the state can track, enforce, and update every support order in the system, as required by Family Code § 4014.
If you skip this form or hand in stale information, you risk delayed wage withholding, missed payments, contempt findings, and even sanctions. According to the federal Office of Child Support Services, more than $32 billion in child support is collected nationwide each year, and California alone handles about $2.5 billion in annual collections — none of which moves smoothly without an accurate FL-191 on file.
Here is what you will learn in this guide:
- 📝 How to complete every line of FL-191 the right way, with named examples
- ⚖️ The federal and California laws that require the form, and what happens when you ignore them
- 🔒 Why FL-191 is confidential and how that protects survivors of domestic violence
- 🚫 The seven most common mistakes parents and paralegals make on this form
- 🔄 When and how to update FL-191 within the strict 10-day window
What Is California Form FL-191?
California Form FL-191 is a one-page Judicial Council form titled Child Support Case Registry Form that captures the identifying, employment, and insurance details of every parent in a California child support case. The form is mandated by Family Code § 4014 and feeds data into the California Child Support Automated System (CCSAS), which is the state’s link to the federal child support enforcement network.
The plain-English point of FL-191 is simple. The state needs current addresses, Social Security numbers, employers, and health insurance details so it can locate parents, withhold wages, enforce arrears, and coordinate benefits. Without the form, the court cannot transmit the order to the State Disbursement Unit, and the obligor’s wages cannot be garnished promptly under an Income Withholding Order (FL-195).
The consequence of ignoring FL-191 is real. Judges can refuse to sign a stipulated child support order until both parties file the form, and the local child support agency can flag the case as non-compliant. A common misconception is that FL-191 is optional or only for cases with a Department of Child Support Services (DCSS) caseworker — it is not. Every California case with a child support order requires it, even purely private cases between two represented parents.
For example, when San Diego attorney Maya Reyes finalizes a stipulated judgment for her client, she always pairs the FL-350 stipulation with a completed FL-191 from each parent. Without that pairing, the clerk’s office in San Diego Superior Court routinely rejects the package.
The Federal Backbone Behind FL-191
The form exists because federal law forces every state to operate a child support case registry. Under 42 U.S.C. § 654a, part of the Personal Responsibility and Work Opportunity Reconciliation Act of 1996, each state must collect and update specific data points for every IV-D and non-IV-D order entered after October 1, 1998.
If California fails to collect this data, the state risks losing federal Title IV-D funding, which pays for most local child support enforcement offices. The consequence trickles down: caseworkers lose tools, parents lose enforcement help, and children lose support.
A real example involves the federal Parent Locator Service, which uses FL-191 data to find parents who move across state lines. Without the form, an obligor in Nevada cannot be located by a California obligee, and arrears mount unchecked.
Who Must File FL-191
Both parents in any California child support proceeding must file FL-191, whether the case is a divorce, legal separation, paternity action, Domestic Violence Restraining Order (DV-100) with support, or a governmental case opened by DCSS. The duty applies to custodial and non-custodial parents alike.
The consequence of one parent skipping the form is that the order can still be entered, but enforcement stalls. For instance, if Marcus Bell — the paying parent — never files FL-191, the State Disbursement Unit cannot match incoming wage withholdings to his case, and the money sits in suspense.
The misconception here is that only the obligor must file. Both parents file, because the obligee’s address and bank routing information are equally needed for direct deposit and notices.
When You Must File or Update FL-191
You file FL-191 at three moments: when the initial child support order is entered, when the order is modified, and within 10 days of any change to the information you previously provided. The 10-day update rule is set by Family Code § 4014(b) and is one of the strictest deadlines in California family law.
The plain-English version is this: if you move, change jobs, change phone numbers, change health insurance, or change your name, you have 10 days to file an updated FL-191 with the same court that issued the order. The consequence of missing the deadline is that the court can find you in contempt, impose monetary sanctions under Code of Civil Procedure § 177.5, and credit the obligee for any missed notice.
A real example involves Priya Shah, who moved from Fresno to Sacramento for a new job but waited three months to update FL-191. Her ex-spouse’s attorney filed an Order to Show Cause re Contempt (FL-410), and the judge sanctioned Priya $500 for the delay.
A common misconception is that emailing your ex with the new address is enough. It is not. The update must be filed with the court on the official FL-191 form, not communicated informally between the parties or their lawyers.
Initial Filing With the Order
When the court signs the first child support order — usually a Findings and Order After Hearing (FL-340) or Judgment (FL-180) — both parents lodge FL-191 with the clerk on the same day. The form does not get served on the other party, and it does not appear in the public court file.
The consequence of skipping the initial filing is that the State Disbursement Unit may delay processing the wage assignment by weeks. Real example: when Daniel Cho’s divorce judgment was signed in Los Angeles Superior Court without an FL-191, his employer’s payroll department received the FL-195 wage order but had no matching registry entry, and Daniel’s first three paychecks were not garnished.
Modification Filings
Anytime support is modified — through a Request for Order (FL-300) or stipulation — both parents file a fresh FL-191. Even if nothing has changed, the new order requires a new form. The consequence of using the old form is that the clerk may reject the modification packet, delaying the new amount from taking effect.
The 10-Day Update Rule
Within 10 days of any change in name, address, employer, phone, or health insurance, you must file an updated FL-191. This is the line item most parents miss. The consequence is contempt exposure, sanctions, and an evidentiary presumption that any notice mailed to your old address was properly served on you.
Section-by-Section Walkthrough of FL-191
FL-191 is a single page divided into a caption block and four numbered sections covering case data, parent information, employer information, and health insurance. Every line matters, and every blank carries a consequence if left empty.
Caption Block: Court, Case, and Parties
The top of the form mirrors every other Judicial Council family law document. You enter your name, address, phone, email, and State Bar number if you are an attorney; the court’s name, street address, mailing address, city, ZIP, and branch name; and the names of the petitioner, respondent, and any other parent or party.
The plain-English rule is to copy the caption exactly from your most recent filed pleading, including the case number. The consequence of a typo in the case number is that the registry will not match the form to your case, and the data is effectively lost. A real example: when paralegal Joanna Ortega transposed two digits in case number 23FL00897, the Orange County Superior Court clerk filed FL-191 under a stranger’s case for six weeks before anyone caught the error.
A common misconception is that you can leave the branch name blank. You cannot. Branches matter for venue and routing, and the clerk will reject a form missing the branch.
Section 1: Case Information
Section 1 asks for the court case number, county, type of order (initial, modification, or other), date the order was filed, and whether the case is a IV-D case handled by the local child support agency. You also indicate if the order includes spousal support or family support, because those amounts flow through the same registry.
The consequence of misidentifying a IV-D case is that DCSS may not receive the order at all, and enforcement services you are entitled to as a CalWORKs or Medi-Cal recipient will not begin. Real example: Lisa Ramirez, a CalWORKs recipient, checked “non-IV-D” by mistake on her FL-191, and her Tulare County DCSS office did not open a case for four months.
Section 2: Parent Information
Section 2 collects each parent’s full legal name, mailing address, residence address (if different), date of birth, Social Security number, driver’s license number and state, telephone number, and email. The form also asks about confidential addresses for survivors of domestic violence enrolled in the Safe at Home program.
The plain-English explanation is that this is the core identifying data the state uses to locate you. The consequence of a wrong SSN is that wage withholding can be sent to the wrong taxpayer, triggering IRS levies on innocent third parties.
A real example: when Robert Kim’s FL-191 listed an SSN with one digit off, the California State Disbursement Unit issued a wage assignment to a different Robert Kim in Bakersfield, who spent four months untangling the levy.
A common misconception is that you can leave SSN blank “for privacy.” You cannot. The form is confidential, and federal law requires the SSN under 42 U.S.C. § 666(a)(13). The state collects it under specific federal authority and shields it from public view.
Section 3: Employer Information
Section 3 asks for each parent’s employer name, address, phone, and, if known, the employer’s Federal Employer Identification Number (FEIN). Self-employed parents list themselves and their business EIN, or note “self-employed, no employees.”
The consequence of leaving employer info blank is that no Income Withholding Order (FL-195) can issue, and the obligee must rely on the obligor to pay voluntarily. That rarely ends well. Real example: contractor Anthony Rivera listed only “self-employed” with no business address, and his ex-wife waited 14 months for any garnishment to attach because the Franchise Tax Board (FTB) had nowhere to send the levy.
A common misconception is that gig workers like Uber drivers have no employer. They do — the platform is the payer of record, and its name and address belong on the form so the FTB Court-Ordered Debt program can intercept earnings.
Section 4: Health Insurance Information
Section 4 captures whether each parent has health insurance available through employment, the carrier’s name, the policy number, and which children are covered. California requires parents to provide health insurance if it is available at no or reasonable cost under Family Code § 3751.
The consequence of failing to disclose available insurance is that the court can issue a National Medical Support Notice (FL-470) to your employer anyway, and you can be charged the full unreimbursed medical cost the other parent paid because you hid coverage. Real example: nurse Sandra Patel did not list her Kaiser Permanente policy on FL-191, and the court ordered her to reimburse her ex-husband $7,400 in out-of-pocket pediatric bills he had paid out of network.
A common misconception is that COBRA or Covered California marketplace coverage does not count. It does. Any coverage available to the children must be disclosed, even if you choose not to enroll.
Three Real-World Filing Scenarios
Every California child support case is different, but three patterns dominate the docket. The tables below show the action and the registry consequence for each.
Scenario 1: W-2 Employee Paying Support
| Filing Action | Registry Outcome |
|---|---|
| Father lists employer Acme Corp, FEIN, and HR address on FL-191 | State Disbursement Unit issues FL-195 within 10 days, garnishment begins next pay cycle |
| Father changes jobs but waits 30 days to update FL-191 | Garnishment stops, arrears accrue, obligee files FL-410 contempt motion |
| Father updates FL-191 within 10 days of new job at Beta Inc. | New FL-195 issues automatically, no missed payments, no contempt exposure |
Scenario 2: Self-Employed Obligor
| Filing Action | Registry Outcome |
|---|---|
| Mother lists “self-employed, sole proprietor, EIN 12-3456789” with business address | FTB Court-Ordered Debt unit can levy bank accounts and 1099 income |
| Mother writes only “self-employed” with no EIN or business name | No levy possible, obligee must seek FL-440 earnings assignment manually |
| Mother updates FL-191 when she incorporates as an S-corp | FTB redirects levy to corporate payroll, support continues uninterrupted |
Scenario 3: CalWORKs / IV-D Case
| Filing Action | Registry Outcome |
|---|---|
| Custodial parent checks “IV-D case” box and lists DCSS caseworker | Local agency opens enforcement file, intercepts tax refunds and lottery winnings |
| Custodial parent checks “non-IV-D” by mistake | DCSS does not open case, federal tax refund offset does not apply |
| Custodial parent corrects FL-191 within 10 days of CalWORKs approval | DCSS retroactively opens case, enforcement begins on next tax cycle |
Step-by-Step: How to Complete and File FL-191
The mechanics of finishing and filing FL-191 are straightforward, but every step has a trap. Walk through them in order and you will avoid the rejection stamp from the clerk.
Step 1: Download the Current Form
Always pull FL-191 directly from the California Courts forms page so you get the latest revision date. The Judicial Council updates the form periodically, and the clerk will reject an outdated version. The consequence of using a 2018 PDF you saved years ago is a same-day rejection and a wasted trip to the courthouse.
Step 2: Fill Out Caption and Sections 1 Through 4
Type the form on a computer rather than handwriting it. Typed forms are processed faster by optical character recognition (OCR) at the clerk’s office. Hand-written forms with messy SSNs are the leading cause of registry mismatches.
Step 3: Sign Under Penalty of Perjury
The bottom of FL-191 carries a penalty-of-perjury declaration under Code of Civil Procedure § 2015.5. Sign and date personally — your attorney cannot sign for you. The consequence of a forged or attorney-signed FL-191 is potential perjury exposure and rejection of the form.
Step 4: File With the Clerk
File FL-191 with the clerk in the same courthouse that issued your support order. Do not serve it on the other party — it is confidential. The clerk routes it to the registry, not to the public file. The consequence of mailing it to the other side is a privacy breach and possible California Rules of Court Rule 1.20 sealing motion.
Step 5: Calendar Your 10-Day Update Trigger
Set a calendar reminder for any future address, job, phone, or insurance change. The 10-day clock runs from the date of the change, not the date you remember to act. The consequence of forgetting is contempt, sanctions, and lost notices.
Mistakes to Avoid on FL-191
Every California family law clerk has a list of FL-191 errors that cause same-day rejection. Avoid these to keep your case moving.
- Using an outdated form revision, which the clerk rejects on sight and forces a re-file.
- Leaving the SSN blank “for privacy,” which violates 42 U.S.C. § 666(a)(13) and stops registry processing cold.
- Listing only “self-employed” with no business name, EIN, or address, which makes wage withholding impossible.
- Hiding available health insurance, which exposes you to reimbursement of every out-of-pocket medical bill the other parent pays.
- Serving FL-191 on the other party, which breaches confidentiality and can trigger a sealing motion.
- Waiting more than 10 days to file an update after a move or job change, which invites contempt under CCP § 1218.
- Mismatching the case number or branch name with the underlying order, which causes the registry to file the form under the wrong case.
- Letting an attorney or paralegal sign in your place, which violates the personal penalty-of-perjury requirement.
- Forgetting to check the IV-D box when DCSS is involved, which delays enforcement services for months.
- Using a P.O. box only, with no residence address, when you are not enrolled in Safe at Home, which the clerk may flag as incomplete.
Do’s and Don’ts of FL-191
A short list of behaviors separates the parents whose orders are enforced quickly from those whose cases stall.
Do’s
- Do type the form so OCR scanners read it cleanly, because typed data lands in the registry without manual re-keying.
- Do file FL-191 the same day the support order is signed, because same-day filing prevents enforcement gaps.
- Do calendar the 10-day update rule on every device, because the deadline is unforgiving and runs from the change date.
- Do disclose every health insurance plan available to the children, because non-disclosure leads to reimbursement orders.
- Do keep a stamped copy of every FL-191 you file, because you will need proof if the other party claims you never updated.
Don’ts
- Don’t share FL-191 with the other parent, because the form is confidential under Family Code § 4014 and not part of public service.
- Don’t guess at SSNs, EINs, or policy numbers, because guesses redirect garnishments to the wrong people and trigger levies on strangers.
- Don’t rely on email or text to “update” your ex, because informal notice does not satisfy the statute and exposes you to contempt.
- Don’t use white-out or cross-outs on a filed FL-191, because the clerk will require a clean updated form rather than corrections.
- Don’t ignore the form because your case is “private” with no DCSS involvement, because every California support case requires FL-191.
Pros and Cons of FL-191’s Strict Rules
The form is administratively heavy, but the rules exist for reasons. Weigh both sides before complaining about the paperwork.
Pros
- The registry produces fast wage withholding, often within a single pay cycle, because employers receive FL-195 orders directly from the state.
- The form is confidential, so survivors of domestic violence keep their addresses out of the public file.
- The 10-day update rule gives obligees a clear remedy when an obligor disappears, because contempt and sanctions become available immediately.
- The federal data match through the Federal Parent Locator Service finds out-of-state parents within weeks rather than years.
- The health insurance disclosure protects children from coverage gaps, because the National Medical Support Notice issues automatically when employer coverage exists.
Cons
- The form must be filed at every modification, even when nothing has changed, which feels redundant to many parents.
- The 10-day update rule is unforgiving, and parents in crisis often miss it, exposing themselves to sanctions.
- The personal-signature requirement means attorneys cannot sign on behalf of unavailable clients, slowing remote or military cases.
- Errors in SSN or case number can take months to unwind, because the registry is automated and human review is slow.
- The form does not auto-populate from prior filings in many counties, which forces parents to retype the same data repeatedly.
Confidentiality and Domestic Violence Protections
FL-191 is not part of the public court file, and it is not served on the other party. Under Family Code § 4014(c), the form is held by the clerk and transmitted only to the State Department of Child Support Services and authorized agencies.
The plain-English consequence is that your address, SSN, and employer remain hidden from your ex-spouse and the public. A real example involves Elena Vasquez, a Safe at Home participant in Contra Costa County, who used her Secretary of State substitute address on FL-191 and prevented her abusive ex from locating her through court records.
A common misconception is that filing FL-191 will leak your address through the family law file. It will not. The form is segregated, and any breach by a clerk violates the statute and exposes the court to liability.
Court Rulings That Shape FL-191 Practice
California appellate courts have repeatedly enforced the FL-191 framework. In In re Marriage of Lim and Carrasco (2013) 214 Cal.App.4th 768, the court emphasized that accurate income and employment data is essential to enforce support orders, reinforcing the FL-191 disclosure regime.
In County of Santa Clara v. Wilson (2003) 111 Cal.App.4th 1324, the appellate court upheld the use of registry data — the same data captured on FL-191 — to establish notice and venue in a IV-D enforcement action. The consequence is that registry data has evidentiary weight in subsequent enforcement hearings.
A common misconception is that FL-191 data is “just paperwork” with no legal teeth. It is not. Courts have used registry mismatches to deny continuances, find contempt, and presume proper service.
FAQs
Is FL-191 confidential?
Yes. The form is held by the clerk under Family Code § 4014, routed only to the state child support registry, and never served on the other party or made part of the public file.
Do both parents have to file FL-191?
Yes. Both the custodial and non-custodial parents must file separate FL-191 forms whenever a child support order is entered or modified, regardless of which parent pays support.
Can my attorney sign FL-191 for me?
No. The form carries a personal penalty-of-perjury declaration under CCP § 2015.5, so each parent must sign personally — attorneys and paralegals cannot sign in your place.
Do I need to file FL-191 if I have no DCSS case?
Yes. Every California child support order — private, divorce, paternity, or governmental — requires FL-191, because the statewide registry covers IV-D and non-IV-D cases alike under federal law.
Is there a deadline for updating FL-191?
Yes. You must file an updated FL-191 within 10 days of any change to your name, address, employer, phone number, or health insurance, as required by Family Code § 4014(b).
Will FL-191 reveal my address to my ex?
No. The form is confidential, segregated from the public file, and never served on the other party, so your address remains hidden — especially if you participate in Safe at Home.
Can I leave my Social Security number blank?
No. Federal law at 42 U.S.C. § 666(a)(13) requires the SSN on the registry form, and the clerk will reject any FL-191 missing it.
Does FL-191 apply to spousal support?
Yes. When a single order combines child and spousal support — or family support — FL-191 still applies because the registry tracks the combined order.
Can I be sanctioned for a late FL-191 update?
Yes. Courts can impose contempt under CCP § 1218 and monetary sanctions under CCP § 177.5 when a parent ignores the 10-day update rule.
Do gig workers list a “self-employed” entry?
No. Gig workers list the platform — Uber, Lyft, DoorDash — as the payer of record, plus any separate sole-proprietor business, so the FTB Court-Ordered Debt program can intercept earnings.
Is FL-191 the same as FL-150?
No. FL-191 is the confidential registry form, while FL-150 is the public Income and Expense Declaration that supports the support calculation itself.
Do I refile FL-191 at every modification?
Yes. Every modification — even a stipulated one — requires fresh FL-191 forms from both parents, because the registry tracks each order separately and needs current data each time.
Related reading
- How to Fill Out California Form FL-195 (w/Examples) + FAQs
- How to Fill Out California Form FL-235 (w/Examples) + FAQs
- How to Fill Out California Form FL-343 (w/Examples) + FAQs
- How to Fill Out California Form FL-358 (w/Examples) + FAQs
- How to Fill Out California Form FL-610 (w/Examples) + FAQs
- How to Fill Out California Form FL-624 (w/Examples) + FAQs
- How to Fill Out California Form FL-120 (w/Examples) + FAQs