As a California business and estate planning attorney with over 12 years of experience drafting marital agreements, I’ve helped hundreds of couples create enforceable postnuptial agreements in California. A postnuptial agreement (sometimes called a “prenup after marriage in California”) is a written contract created after a couple marries or registers a domestic partnership that defines how assets, debts, and spousal support will be handled in the event of separation, divorce, or death.
In this comprehensive guide, I’ll explain everything you need to know about post nuptial agreements California law in 2025, provide a free downloadable postnuptial agreement California template I personally use as a starting point for clients, and walk you through each section so you can customize it properly.
Important Disclaimer: This article and the attached template are for informational purposes only and do not constitute legal advice. Postnuptial agreements in California are held to an extremely high standard of fairness and voluntariness under Family Code § 1615(c). Always consult a licensed California family law attorney before signing any marital agreement.
A postnuptial agreement California residents execute after marriage serves the same core purpose as a prenup—protecting individual property, clarifying financial rights, and reducing conflict during divorce—but it is scrutinized far more strictly by courts because the couple already owes each other fiduciary duties at the time of signing (California Family Code §§ 721, 1100).
Common reasons my California clients request a post marital agreement California:
California courts will void a postnuptial agreement in California unless all of the following are satisfied (Fam. Code § 1615(c) and case law including In re Marriage of Bonds (2000) and In re Marriage of Cadwell-Faso & Faso (2011)):
| Requirement | Details | Source |
|---|---|---|
| Written & Signed | Must be in writing and signed by both spouses | Family Code § 1611 |
| Independent Counsel | Each spouse must have at least 7 calendar days to review with independent counsel OR knowingly waive in a separate writing | Family Code § 1615(c)(3) |
| Full Disclosure | Complete and accurate disclosure of all assets, debts, and income (usually via Schedule of Assets) | Family Code § 721, § 1100 |
| Voluntary Execution | No coercion, duress, or undue influence | Family Code § 1615(c)(2) |
| Not Unconscionable | Must be fair at time of enforcement, especially regarding spousal support waivers | In re Marriage of Pendleton & Fireman (2000) |
Download Free California Postnuptial Agreement Template (Word .docx)
Last updated November 2025 – compliant with current California Family Code
This postnuptial agreement California template includes:
Clearly identifies the spouses, date of marriage, and county of execution.
Explains the purpose and acknowledges the heightened fiduciary duties between spouses under California law.
Both parties attach Schedule A (assets) and Schedule B (debts/income). This is non-negotiable—courts routinely void agreements when disclosure is inadequate.
The template contains explicit language satisfying Family Code § 1615(c)(3). If one spouse is unrepresented, they must sign a separate waiver after being advised in writing of their rights.
Allows you to transmute community property to separate property (or vice versa) using the exact statutory language required by Family Code § 852 (“A transmutation of real or personal property is not valid unless made in writing by an express declaration…”).
California permits waiver or limitation of spousal support in postnups if the provision is not unconscionable at the time of enforcement. The template includes the most court-resistant language available.
Confirms that the agreement does not revoke existing wills but coordinates with them.
Severability, governing law (California), entire agreement, attorney fees for enforcement, etc.
While notarization is not strictly required for validity, I always recommend it for evidentiary purposes.
In my practice, I see the same fatal errors repeatedly:
| Factor | Prenup | Postnup |
|---|---|---|
| Timing | Before marriage | After marriage |
| Fiduciary duty level | Arm’s length | Heightened (Fam. Code § 721) |
| 7-day rule | Yes (if unrepresented) | Yes (mandatory) |
| Court scrutiny | Moderate | Very high |
| Spousal support waiver | Generally enforceable | Subject to unconscionability at enforcement |
Attorney-drafted postnups in California typically range from $2,500 – $15,000+ depending on complexity and net worth. The free postnuptial agreement California example provided here is an excellent starting point for moderate-estate couples, but high-net-worth individuals or those with complicated business interests should invest in custom drafting and review.
Can I write my own postnuptial agreement in California?
Yes, but the risk of invalidity is extremely high without attorney involvement.
Are postnuptial agreements enforceable in California in 2025?
Yes—if they strictly comply with Family Code § 1615(c) and case law.
Does California require notarization?
No, but it is strongly recommended.
Can we waive spousal support completely?
Generally yes, if the waiver is not unconscionable when enforced.
How long does the 7-day waiting period start?
From the date the final version is presented to the spouse who will have counsel.
A well-drafted postnuptial agreement in California can provide enormous peace of mind and financial clarity. Download the free postnuptial agreement California template above, fill in your specific information, and—most importantly—have it reviewed by separate qualified California family law attorneys before signing.
Protecting your assets and your marriage is worth the investment of proper legal guidance.
Sources: California Family Code §§ 721, 852, 1610–1617; IRS.gov (community property rules); In re Marriage of Bonds (2000) 24 Cal.4th 1; In re Marriage of Pendleton & Fireman (2000) 24 Cal.4th 39.