A California legal separation agreement is built on the Judicial Council’s standard family law forms, which you can download free from the California Courts website and file with your county superior court. The agreement keeps you legally married while giving a judge the authority to divide property, order support, and set custody. Only one spouse needs to live in California to file, and there is no minimum residency period, which is why couples who recently moved to the state often start here instead of waiting out the six-month divorce rule.1California Courts. Legal Separation Neither spouse can remarry or enter a new domestic partnership once the judgment is entered, because the marriage itself stays intact.
What the Agreement Has to Decide
Your agreement is only as useful as the issues it resolves. California courts expect it to cover property division, debts, spousal support, and — if you have minor children — custody and child support. Anything left vague becomes a future court hearing.
Property and Debts
California is a community property state. The court must divide the community estate equally unless both spouses agree in writing to a different split.2California Legislative Information. California Code Family Code 2550 – Division of Community Estate Community property is what you acquired during the marriage: wages, jointly bought real estate, retirement contributions, vehicles. Separate property is what each of you owned before the marriage or received individually as a gift or inheritance. Debts follow the same logic. A mortgage taken out during the marriage or a joint credit card balance is community debt, and the agreement has to allocate it.
List each asset and debt by name, current value, and which spouse keeps it. “Husband gets the house” without addressing the mortgage balance is the kind of language that comes back as an enforcement fight.
Spousal Support
If one spouse earns significantly more than the other, address support directly. When spouses can’t agree on an amount, the court works through the factors in Family Code Section 4320, including each spouse’s earning capacity, the marital standard of living, the length of the marriage, and the paying spouse’s ability to pay.3California Legislative Information. California Code FAM 4320 – Factors to Be Considered in Ordering Support For marriages of ten or more years, courts generally retain jurisdiction over spousal support indefinitely unless the agreement says otherwise.
Custody and Child Support
If you have minor children, the agreement must define legal custody (who decides on education, healthcare, and welfare) and physical custody (where the children live).4California Courts. Child Custody and Visitation (Parenting Time) A parenting schedule covering weekdays, weekends, holidays, and school breaks heads off most disputes.
Child support follows the statewide formula in Family Code Section 4055, which weighs each parent’s net monthly disposable income against the percentage of time the higher-earning parent has physical custody.5California Legislative Information. California Code FAM 4055 Attorneys and courts typically run the numbers through DissoMaster or Xspouse software, but the inputs are income and timeshare, and knowing that lets you sanity-check a proposed amount. The agreement should also say who carries health insurance for the children and how uninsured medical bills and extracurricular costs get split.
Gather Your Financial Records First
Before you touch the forms, pull your paperwork together. California requires both spouses to make a preliminary disclosure of every asset and liability, community or separate, plus all tax returns filed within the two years before the disclosure and a current income and expense declaration.6California Legislative Information. California Code FAM 2104 – Disclosure of Assets and Liabilities
At a minimum, pull together:
- Recent pay stubs, W-2s, 1099s, and the last two years of federal and state tax returns.
- Deeds, mortgage statements, and recent appraisals or tax assessments for any real estate.
- Statements for bank accounts, brokerage accounts, retirement plans, and life insurance policies.
- Current balances on mortgages, car loans, student loans, credit cards, and any outstanding tax obligations.
- Vehicle titles, registration, and loan payoff amounts.
Hiding or skipping assets is one of the fastest ways to have a judgment set aside later. A spouse who discovers an omitted account down the road can reopen the case.
Which Forms to Complete
You don’t draft the agreement from scratch. The Judicial Council forms function as the template and walk you through each required topic.
Petition and Summons
Form FL-100 starts the case. Check the box for “Legal Separation” rather than “Dissolution of Marriage,” and under grounds choose irreconcilable differences (what nearly everyone picks) or permanent incapacity to make decisions.7Judicial Council of California. FL-100 Petition – Marriage/Domestic Partnership (Family Law) The petition asks you to identify the issues you want the court to decide: property division, spousal support, custody, child support.
Form FL-110, the Summons, goes with the petition and notifies your spouse the case has been filed. It carries automatic temporary restraining orders that prevent either party from transferring property, canceling insurance, or taking children out of state while the case is pending.8California Courts. You Were Served Divorce Papers
Disclosure Forms
Form FL-140 is the cover sheet for your preliminary declaration of disclosure. It lists every financial document you’re giving your spouse.9California Courts. Declaration of Disclosure (FL-140) The financial detail lives on the attachments:
- FL-142, the Schedule of Assets and Debts, catalogs all known property and debt. The older Property Declaration (FL-160) is an alternative, but FL-142 is more commonly used.10California Courts. Schedule of Assets and Debts (FL-142)
- FL-150, the Income and Expense Declaration, reports monthly income, tax withholdings, and routine living expenses line by line. Courts rely heavily on it for support calculations.
Both spouses exchange preliminary disclosures. You serve the disclosure on your spouse but do not file the financial attachments with the court. Only the FL-140 cover sheet goes to the clerk to confirm the exchange happened. Copy figures directly from the underlying statements and pay stubs. Estimates slow the case down and can draw sanctions.
Filing and Serving the Papers
Once FL-100, FL-110, and FL-140 are complete, file them with the superior court clerk. The filing fee runs $435 to $450.11California Courts. File Divorce Papers If you can’t afford it, submit Form FW-001 to request a fee waiver based on your income or receipt of public benefits.12California Courts. Request to Waive Court Fees (FW-001) The clerk stamps your copies and assigns a case number.
You then have to serve the petition and summons on your spouse, and you can’t do it yourself. The server has to be at least 18 and not a party to the case: a friend, a relative, a professional process server, or the county sheriff.13Superior Court of California, County of Orange. Divorce / Legal Separation / Annulment The server fills out the Proof of Service of Summons (Form FL-115), which you file to show your spouse received the papers.14California Courts. Proof of Service of Summons (FL-115)
Your spouse has 30 days from service to file a response.15California Courts. Fill Out and File Forms to Respond to Divorce Papers If they agree with everything, their response mirrors the petition and the case proceeds as uncontested. If they disagree, the response identifies the disputed issues and the court schedules hearings or mediation.
Getting the Judgment Entered
Once you’ve agreed on every issue, two forms carry you to judgment. Form FL-170, the Declaration for Default or Uncontested Legal Separation, summarizes the case and asks the court to enter judgment on your terms. Form FL-180 is the actual judgment the judge signs.
If you’ve negotiated a detailed marital settlement agreement, it attaches to the FL-180 and becomes an enforceable court order when the judge signs. The agreement should cover everything already discussed: property, debts, spousal support, custody, and child support. Many couples also attach FL-343 (Spousal, Partner, or Family Support Order Attachment) and FL-345 (Property Order Attachment) to lay out the specifics in the court’s preferred format.
Unlike divorce, legal separation has no six-month waiting period. The court can enter judgment as soon as the paperwork is in order and a judge has reviewed it. Processing time varies by county, from a few weeks to several months during busier periods.
Splitting Retirement Accounts
Dividing a 401(k), pension, or other employer-sponsored retirement plan takes an extra step. Federal ERISA law generally prohibits assigning retirement benefits to anyone other than the plan participant, with one exception: a Qualified Domestic Relations Order.16U.S. Department of Labor. QDROs Chapter 1 – Qualified Domestic Relations Orders: An Overview A QDRO is a court order telling the plan administrator to pay a portion of the participant’s benefits to the other spouse.
To qualify, the order must include the name and address of both the participant and the alternate payee (the receiving spouse), the name of each plan covered, the dollar amount or percentage assigned, and the time period or number of payments involved.16U.S. Department of Labor. QDROs Chapter 1 – Qualified Domestic Relations Orders: An Overview A private agreement between spouses isn’t enough. The plan is not required to honor an order that doesn’t meet the federal requirements, and most people hire a specialist attorney or actuary to draft the QDRO because administrators routinely reject orders with formatting errors or missing information.
Health Insurance and Social Security
Preserving health insurance is one of the most common reasons for choosing legal separation over divorce. Whether it actually works depends on the plan. Some employer plans treat legal separation the same as divorce and drop the non-employee spouse; others let coverage continue as long as the marriage isn’t dissolved. Read the plan’s summary plan description before you finalize anything.
If the non-employee spouse does lose coverage, federal COBRA law classifies both divorce and legal separation as qualifying events, giving the affected spouse up to 36 months of continued group coverage.17GovInfo. 29 USC 1163 – Qualifying Event You pay the full premium plus a 2 percent administrative fee, so it isn’t cheap, but it bridges the gap.
Because the marriage stays intact, you remain eligible for Social Security spousal benefits based on your spouse’s earnings record. This matters most for couples approaching the ten-year mark: divorced spouses need at least ten years of marriage to claim on an ex-spouse’s record, while legally separated spouses can claim regular spousal benefits regardless of marriage duration, subject to the usual eligibility rules.
Taxes After Legal Separation
A California legal separation judgment counts as a “decree of separate maintenance” under federal tax law. If your judgment is final by December 31, the IRS treats you as unmarried for that tax year, and you file as single or, if you qualify, head of household. Head of household status requires that your spouse didn’t live in your home during the last six months of the year, that you paid more than half the cost of keeping it up, and that it was the main residence of your dependent child for more than half the year.18Internal Revenue Service. Publication 504 (2025) – Divorced or Separated Individuals
For any separation agreement executed after December 31, 2018, spousal support payments are not deductible by the payer and not taxable to the recipient. The Tax Cuts and Jobs Act repealed Internal Revenue Code Section 71, eliminating the federal alimony deduction for all new agreements.19Internal Revenue Service. IRS Chief Counsel Advice 202426011 If you modify an older pre-2019 agreement, the new tax treatment applies only when the modification expressly adopts it.
Only one parent can claim a child as a qualifying dependent for the child tax credit. The IRS default is the custodial parent, meaning the parent with whom the child lived for the greater part of the year.20Internal Revenue Service. Divorced and Separated Parents If you want the noncustodial parent to claim the credit, the custodial parent has to sign IRS Form 8332 releasing the exemption. Build this into the agreement if it matters for your tax planning.
Converting to Divorce Later
Choosing legal separation doesn’t lock you in. If the case is still pending, you can amend the petition to request a divorce instead. That amendment resets the clock, and the six-month divorce waiting period starts from the date the amended petition is served.1California Courts. Legal Separation You also have to meet the standard divorce residency requirement at that point: one spouse must have lived in California for at least six months and in the filing county for at least three.
If the legal separation judgment has already been entered, either spouse can file a new motion to convert it to a divorce. Property and support orders from the separation judgment typically carry over, though the court can modify them if circumstances have changed.