A prenuptial agreement—often called a “prenup“—is one of the most misunderstood legal documents in California. While some people assume prenups are only for the ultra-wealthy, they can benefit couples from all financial backgrounds by establishing clear expectations regarding property, debts, and financial responsibilities before marriage. This post details of what can and cannot be included in a prenuptial agreement in California.
To begin California law places important limits on what a prenuptial agreement may include. If a prenup contains prohibited provisions or is not prepared correctly, a court may refuse to enforce some or all of the agreement. California’s Uniform Premarital Agreement Act (Family Code §§ 1610–1617) sets the framework for valid premarital agreements and requires specific procedural safeguards, including full financial disclosure and a mandatory seven-day review period before signing.
If you are considering marriage and want to protect your assets, business, inheritance, or future estate, understanding the rules of what can and cannot be included in a prenuptial agreement is essential.
What Is a Prenuptial Agreement?
A prenuptial agreement is a written contract entered into before marriage that establishes how certain financial matters will be handled during the marriage, in the event of divorce, or to a certain extent upon the death of one spouse.
Without a valid prenup, California’s community property laws generally govern how marital assets and debts are divided if a marriage ends. A properly drafted agreement allows couples to customize many of these financial rules.
What Can Be Included in a California Prenuptial Agreement?
California law allows couples considerable flexibility when drafting a premarital agreement.
1. Separate Property
A prenup can specify that assets owned before marriage and acquired during marriage remain each spouse’s separate property.
Examples include:
- Real estate
- Savings accounts
- Brokerage accounts
- Retirement Accounts
- Family businesses
- Vacation homes
2. Community Property Rules
Couples may modify California’s default community property rules and determine how assets acquired during the marriage will be characterized or divided.
3. Business Ownership
Business owners frequently use prenups to:
- Protect ownership interests
- Prevent future ownership disputes
- Define how business appreciation will be treated
- Protect business partners
4. Debt Allocation
A prenup may specify responsibility for:
- Student loans
- Credit card debt
- Personal loans
- Tax obligations
- Business liabilities
5. Spousal Support
California generally allows spouses to include provisions regarding spousal support. However, these provisions receive heightened scrutiny and may be unenforceable if they were not negotiated voluntarily or if statutory requirements were not satisfied, including representation by independent legal counsel for any spousal support waiver.
6. Inheritance Rights
One of the most overlooked benefits of a prenup is estate planning. A properly drafted prenup may waive the spouses’ statutory inheritance rights to each other’s property and if coordinated with the living trust and other estate planning documents may:
- Preserve children’s inheritances;
- Protect business interests; and
- Clarify inheritance expectations.
This is especially valuable for blended families and individuals who already have comprehensive estate plans.
What Cannot Be Included in a California Prenuptial Agreement?
Although California gives couples broad flexibility, certain provisions are prohibited.
Child Custody
Parents cannot predetermine custody arrangements.
California courts decide custody based upon the child’s best interests at the time of separation or divorce.
Child Support
Parents cannot waive or limit a child’s right to financial support.
Any child support provisions included in a prenup are generally unenforceable.
Illegal Provisions
A prenup cannot require either spouse to commit an illegal act.
Personal Lifestyle Clauses
While couples sometimes discuss provisions regarding household chores, intimacy, religion, weight, or other personal matters, these provisions generally are not enforceable as contractual obligations in California.
Unconscionable Terms
Courts may refuse to enforce provisions that are extremely one-sided or fundamentally unfair, particularly if there was inadequate disclosure or evidence of coercion.
What Makes a Prenuptial Agreement Valid in California?
To maximize the likelihood that a prenup will be enforced, California law requires several important safeguards.
A valid prenuptial agreement should generally include:
- A written agreement
- Signatures from both parties
- Independent counsel representation for both parties
- Full disclosure of assets and debts
- At least seven calendar days between receiving the final agreement and signing
Failing to satisfy these requirements may make the prenuptial agreement void.
Why Prenuptial Agreements Matter in Estate Planning
Many people think of prenups only in connection with divorce.
In reality, they are often an important part of a comprehensive estate plan.
A prenuptial agreement can help:
- Protect assets intended for children from a previous relationship
- Allow each spouse to direct the inheritance of their share of the family estate independently.
- Reduce future probate disputes
- Clarify ownership of separate property
For individuals with significant assets or blended families, discussing a prenup with both a family law attorney and an experienced estate planning attorney can help ensure that financial and estate planning goals work together.
Work With an Experienced Carmel Valley Estate Attorney
Whether you are getting married for the first time or entering a second marriage, careful planning today can help avoid costly disputes later.
At our estate planning firm, we help individuals and families protect their wealth through comprehensive estate planning, including living trusts, asset protection strategies, and planning that coordinates with premarital agreements. If you are considering a prenuptial agreement, we can work with you and your significant other’s attorney to ensure your estate plan reflects your long-term goals.
If you live in Carmel Valley, Del Mar, La Jolla, or elsewhere in San Diego County, contact our office to learn how thoughtful estate planning can protect the people and assets that matter most.
Frequently Asked Questions About California Prenuptial Agreements
Is a prenuptial agreement enforceable in California?
Yes, a prenuptial agreement is enforceable in California if it meets the legal requirements. To increase the likelihood that a court will uphold the agreement, it should be in writing, signed voluntarily by both parties, each party represented by an independent counsel, include full financial disclosure, and comply with California’s procedural requirements. If the agreement contains unconscionable terms or was signed under duress or without proper disclosure, a court may refuse to enforce some or all of its provisions.
Does a prenuptial agreement protect an inheritance?
A prenuptial agreement can help protect an inheritance by confirming that inherited assets remain the separate property of the receiving spouse. While inheritances are generally considered separate property under California law, a prenup can provide additional clarity and help prevent disputes if inherited assets become commingled with marital property. Coordinating your prenup with your estate plan and living trust provides even greater protection.
Can a prenup protect my business?
Yes. A prenuptial agreement is one of the most effective ways to protect a business that you owned before marriage or expect to acquire. A prenup can specify that the business remains separate property, establish how future appreciation will be treated, and reduce the risk of ownership disputes if the marriage ends.
How long before the wedding should a prenup be signed?
California law requires that a party have at least seven calendar days between receiving the final version of the prenuptial agreement and signing it. However, waiting until the week of the wedding is generally not recommended. Beginning the process several months before the wedding allows ample time for financial disclosures, negotiations, revisions, and independent legal review. Starting early also helps demonstrate that the agreement was signed voluntarily and without pressure.
Can you waive spousal support in a California prenuptial agreement?
In many cases, yes. California law permits spouses to include provisions regarding spousal support, but these provisions are subject to strict legal requirements. A waiver of spousal support is generally not enforceable unless the party giving up that right was represented by independent legal counsel when signing the agreement. Even then, a court may decline to enforce a waiver that would be considered unconscionable at the time it is enforced.
Does a prenuptial agreement override a living trust?
No. A prenuptial agreement and a living trust serve different legal purposes and should be drafted to complement one another. A prenup establishes property rights between spouses, while a living trust governs how assets are managed during your lifetime and distributed after death. If the documents conflict, resolving the inconsistency can be complicated. Working with an experienced estate planning attorney helps ensure your legal documents work together to accomplish your goals.
What happens if one spouse doesn’t disclose all assets?
Full and fair financial disclosure is a critical requirement for an enforceable California prenuptial agreement. If one party intentionally hides assets, understates income, or fails to disclose their debts, a court may determine that the agreement is unenforceable in whole or in part. Honest disclosure helps ensure that both parties enter the agreement knowingly and voluntarily.