How prenups work in California.
What California law does to your money automatically, and how to set your own rules.
- Default Property Regime (Community Property): California is a strict 50/50 Community Property state where all income, bonuses, and stock vesting during marriage belong equally to both spouses by default.
- Typical California Prenup Cost: Unaligned California couples pay $9,000 to $15,000+ across two lawyers, versus $3,500 to $5,500 when arriving with a reconciled Vespera brief.
- The #1 California Legal Trap to Know: The 7-Day Final Draft Rule (Cal. Fam. Code § 1615(c)(2)) requires at least 7 calendar days between receiving the final agreement and signing, and waiving spousal support requires independent legal counsel for both partners (§ 1612(c)).
You already have a prenup in California (the government wrote it).
Compare what California's automatic community property rules do to your money vs. what you can choose together in Vespera.
1. Salary, Bonuses & RSUs Earned After the Wedding
100% of salary, bonuses, and RSU tranches earned or vesting during marriage are split 50/50 as community property under Hug and Nelson time-rule formulas.
Decide together whether base salaries fund a joint household account while pre-wedding equity grants or a portion of bonuses stay separate.
2. Buying a Home When One Partner Pays More of the Down Payment
Commingling a separate down payment into a jointly titled home without a written tracing agreement risks converting equity into community property.
Credit each partner their exact pre-marital down payment ($150k vs. $30k) off the top first, then split net home appreciation 50/50.
3. Pre-Marital Savings or a Pre-Marital Condo that Appreciates
If community earnings pay down the mortgage on a pre-marital condo, the community acquires a pro-tanto ownership interest under the Moore/Marsden formula.
Keep pre-marital properties and passive/active growth clearly separated, even if marital income helps pay a mortgage or renovation.
4. Student Loans & Debt Brought Into the Marriage
Pre-marital student loans stay separate, but using joint checking accounts to pay them down can trigger community reimbursement claims at divorce.
Keep pre-marital student loans legally separate while optionally allowing household cash flow to pay them down with a fair reimbursement credit.
5. Spousal Support (Alimony) & Career Pauses for Children
Judges apply county temporary calculators and Family Code § 4320 factors; marriages over 10 years carry indefinite support jurisdiction.
Replace California's unpredictable court formulas with a custom safety net, such as guaranteed retirement contributions during a career pause for kids.
California prenups by the numbers.
$450 to $750/hr per lawyer
Typical partner billing rate in San Francisco, Silicon Valley, Los Angeles, and San Diego.
$9,000 to $15,000+
2 independent lawyers spending 12 to 16 combined hours on drafting and redline negotiation.
$4,500 to $7,500 saved
Reduces attorney time to 3 to 5 combined hours of statutory drafting and review.
90 to 180 days before wedding
Leaves ample buffer for disclosures, attorney review, and the mandatory 7-day rule.
Unvested Tech Equity & Home Down Payments
RSUs, startup stock options, and asymmetric Bay Area or LA home down payments.
Cal. Fam. Code §§ 1600-1617 (UPAA)
Includes strict § 1615(c)(2) 7-day waiting period and § 1612(c) counsel rules.
The 5 checkpoints that make a California prenup hold up in court.
Why a $599 boilerplate printout gets challenged in California courts, and how Vespera prepares you for all 5 statutory requirements.
Voluntary Execution & The 7-Day Waiting Period
Under Cal. Fam. Code § 1615(c)(2), at least 7 calendar days must pass between the moment a partner receives the final agreement and the moment they sign it.
Vespera gets both partners aligned months ahead of the wedding so your lawyers finalize the draft calmly, well before the 7-day statutory clock.
Full & Fair Financial Disclosure
California courts invalidate agreements if either partner hides or omits bank accounts, unvested equity, or debts (Cal. Fam. Code § 1615(a)(2)).
Vespera automatically organizes both partners' assets, liabilities, and income into clean Exhibit A and B schedules for your attorneys.
Independent Legal Counsel for Both Partners
Under Cal. Fam. Code § 1612(c), any clause modifying or waiving spousal support is automatically unenforceable unless the waiving party had independent legal counsel.
Instead of a risky $599 unrepresented template, Vespera exports separate Drafting Counsel and Reviewing Counsel Packets for two independent lawyers.
Fairness & Conscionability at Enforcement
Extreme, one-sided terms that leave a spouse destitute or strip career-pause protections invite judicial challenges.
Vespera's Compromise Audit Trail documents how both partners balanced trade-offs in good faith.
Proper Written Execution & Notarization
The agreement must be in writing and signed by both parties before a notary public to protect real property transmutations.
Your attorneys receive print-ready PDF and editable Word (.docx) briefs formatted for smooth final execution.
Calculate your California lawyer billable-hour savings.
Pre-loaded with San Francisco & Los Angeles's average family attorney rate ($600/hr per lawyer).
1. Attorney Rate & Topics
2. Cost & Enforceability Comparison
High court-challenge risk: unrepresented $599 forms often fail on support waivers, RSUs, or business equity.
14 combined hrs negotiating from scratch at $1,200/hr combined.
Explore California prenup guides by financial situation.
Tech Employees with Unvested RSUs & Options
Founders & Business OwnersStartup Founders, Small Business & LLC Owners
Unequal Home Down PaymentsCouples Buying a Home with Asymmetric Savings
Physicians & MedicalDoctors & Dentists with Med School Debt + High Future Income
Student Loans & Debt ShieldCouples Protecting One Partner from Pre-Marital Debt
Inheritance & Family WealthCouples Protecting Family Gifts, Trusts & Future Inheritances
Career Pauses & Family CareCouples Protecting a Partner Who Pauses Work for Kids
Second Marriages & Blended FamiliesSecond Marriages Protecting Existing Kids & Retirement
California prenup FAQs
Direct answers on California attorney costs, community property rules, and statutory timelines.
Do we both need a lawyer for a prenup in California?
If your prenup waives or limits spousal support (alimony), California Family Code Section 1612(c) strictly requires both partners to be represented by separate, independent legal counsel. Even when spousal support is not waived, having two independent attorneys is the gold standard to satisfy Section 1615 voluntariness rules.
Can a prenup protect future earnings or unvested RSUs in California?
Yes. Without a prenup, California applies the Hug and Nelson time-rule formulas to divide unvested RSUs and stock options that vest during marriage. A California prenup can specify that equity remains separate based on grant date or follows a custom vesting split.
How much does a prenup lawyer cost in San Francisco or Los Angeles?
Family law attorneys in San Francisco, Silicon Valley, and Los Angeles typically bill $450 to $750 per hour. When couples hire two attorneys without aligning first, total legal bills average $9,000 to $15,000+. Arriving with a reconciled Vespera brief reduces total legal costs to roughly $3,500 to $5,500.
Can we waive alimony in a California prenup?
Yes, provided both partners are represented by independent legal counsel at the time of signing and the waiver is not unconscionable at the time of enforcement under California Family Code Section 1612(c). A $599 DIY online template without two lawyers cannot legally waive alimony in California.
How early before our California wedding should we start?
Start 90 to 180 days before your wedding date. This gives you time to align privately in Vespera, gather financial disclosures, have two independent attorneys review the draft, and comfortably satisfy California's mandatory 7-calendar-day waiting period.
Editorial & Statutory Framework Attribution • California Uniform Premarital Agreement Act (Cal. Fam. Code §§ 1600-1617)
Compiled by the Vespera Family Law Research Team for California (San Francisco & Los Angeles) couples preparing for independent legal counsel.
Agree on your prenup before hiring lawyers.
Answer guided prompts privately, see where you match, and hand your attorneys an agreed brief.
Vespera is a pre-lawyer financial alignment workspace, not a law firm, and does not provide legal advice or draft binding contracts.