California law makes it very difficult to completely disinherit a spouse. The state’s community property system gives your surviving spouse a legal claim to a significant portion of your estate, regardless of what your will or trust says.
Understanding where those boundaries are helps you make informed decisions about how your estate plan is structured.
How Community Property Works in California
California is one of nine community property states in the country. Under this system, most assets acquired during a marriage belong equally to both spouses, no matter whose name is on the account or the title.
That means if you earn a salary during your marriage, your spouse owns half of what you earn. If you purchase a home together, your spouse owns half of that home. A will or trust can only direct your share of community property, not your spouse’s share.
Your spouse’s half belongs to them outright. No estate planning document changes that.
What Is Separate Property?
Not everything you own is community property. Separate property includes assets you owned before you married, inheritances you received individually, and gifts made specifically to you, even during the marriage.
If you keep separate property clearly documented and never mix it with marital assets, you can generally direct it however you choose in your estate plan. You can leave separate property to your children, a sibling, a charity, or anyone else.
The complication arises when separate and community property get commingled. Depositing an inheritance into a joint checking account, for example, can convert separate property into community property. Once comingled, the inheritance is under your spouse’s ownership rights.
The Elective Share and Omitted Spouse Protections
California does not use an elective share system the way many other states do. In states with elective share laws, a surviving spouse can claim a statutory percentage of the estate even if the will leaves them nothing. California takes a different approach.
Instead, California protects surviving spouses primarily through the community property framework itself. A spouse cannot be disinherited from their half of community property because that half was never yours to give away.
California also has an omitted spouse statute under Probate Code section 21610. If you were married after executing your will and never updated it, your surviving spouse may be entitled to a share of your estate as though you had died without a will.
The court treats the omission as an oversight rather than an intentional decision.
This protection can be overcome if you clearly state in your will that you intend to leave nothing to a future spouse. Or if your spouse has waived their rights in a valid prenuptial or postnuptial agreement.
Prenuptial and Postnuptial Agreements
A valid prenuptial or postnuptial agreement is one of the most reliable ways to alter the default rules. If both spouses voluntarily agree, with independent legal counsel and full financial disclosure, they can restructure what each spouse is entitled to at death.
These agreements can convert community property into separate property, define what each spouse owns individually, and waive rights that would otherwise arise automatically under California law.
Courts will enforce them when they meet the requirements under the California Uniform Premarital Agreement Act.
Without such an agreement, your options for disinheriting a spouse are narrow. You cannot simply write them out of your will and expect that to hold up.
What Happens If You Try to Disinherit a Spouse Without Legal Grounds
If your estate plan attempts to deny your spouse their community property interest, the surviving spouse can go to court and assert their rights. The portion of the estate that belongs to them will be returned regardless of what your documents say.
This creates delays, legal costs, and conflict that a properly structured plan would have avoided entirely. It can also create friction between a surviving spouse and children from a prior relationship, which is one of the more common scenarios where this issue surfaces.
Blended Families and Competing Interests
Many people raising this question are in second or later marriages with children from a prior relationship. The concern is understandable. You want to provide for your current spouse while also protecting assets you intend to pass to your children.
California law does not prevent you from doing both. It requires you to do it thoughtfully.
One common solution is a qualified terminable interest property trust, often called a QTIP trust. This structure allows you to provide income and support to your surviving spouse during their lifetime while preserving the principal for your children after your spouse passes. Your spouse receives the benefit they are entitled to, and your children receive what remains.
Another approach involves clearly documenting and maintaining separate property. That way, assets you brought into the marriage or inherited remain outside the community property pool and can be directed to your children without restriction.
The Role of a Funded Revocable Living Trust
A revocable living trust does not override community property law. It gives you significantly more control over how your estate is administered. Assets held in a properly funded trust pass according to the trust’s terms, outside of probate, and without court involvement.
This matters in blended family situations because it reduces the opportunity for disputes to escalate into litigation. Your successor trustee can carry out your instructions promptly and privately.
A will, by contrast, goes through the public probate process, which invites scrutiny and challenge.
For most California residents with a spouse and children, a trust-based plan with clear documentation of separate property and community property interests is the most effective way to achieve what you want.
Working Within the Law to Protect What Matters
You cannot disinherit a spouse from their community property share, and attempts to do so create problems rather than solve them.
What you can do is structure your estate plan to reflect your intentions clearly, protect separate property through proper documentation, and use trust planning to balance the interests of everyone involved.
That requires working with an estate planning attorney who will understand California’s community property rules and the specific dynamics of your family situation.
Take Action Today!
Our firm can help you create a plan that is carefully tailored to suit your specific needs. To get started, send us a message or call our Petaluma, CA estate planning office at 707-769-9975.
- Using Values in Estate Planning - August 17, 2026
- What Happens If You Become Mentally Incapacitated Without an Estate Plan? - August 12, 2026
- Protect What You Leave to Your Heirs - August 10, 2026
See Larger Map Get Directions