Surviving Spouse Rights in Trust Administration (California)

A surviving spouse in California already owns half of everything the couple acquired together as community property, the moment the first spouse dies, before a trustee lifts a finger. That’s the rule under Probate Code § 100, and it’s the single most important thing to understand if you’re a surviving spouse waiting on a trust administration, or a trustee administering one. That half isn’t a distribution. It’s not a gift from the deceased spouse’s generosity. It was already theirs.

Trustees sometimes make a quiet mistake here: treating a surviving spouse like any other beneficiary in line for a check once the paperwork clears. That framing is wrong, and it matters, because it changes what the trustee is actually deciding versus what the trustee is simply required to recognize.

The core rule: Probate Code § 100

Probate Code § 100 says it plainly: upon the death of a married person, one half of the community property belongs to the surviving spouse, and the other half belongs to the decedent, subject to the decedent’s debts and to whatever disposition the decedent made of their half through a will or trust.

Read that again with the emphasis in the right place. The statute doesn’t say the community property “goes to” the surviving spouse. It says half of it already belongs to them. The deceased spouse never had the power to give away the survivor’s half in the first place, no matter what the trust document says, no matter what a will says, no matter what anyone intended. You cannot leave away property that isn’t yours to leave. The trust, and any distribution scheme in it, only ever reaches the deceased spouse’s own half of the community property, plus whatever separate property the deceased spouse owned individually.

Quasi-community property: Probate Code § 101

Probate Code § 101 extends similar treatment to quasi-community property: property that would have been community property if the couple had been living in California when they acquired it. This comes up constantly for couples who relocated to California from a separate-property state, like most of the country outside the handful of community property states. Say a couple married in Ohio, both worked, and accumulated a retirement account and some savings entirely during the marriage before moving to California in their fifties. None of that was community property under Ohio law when it was earned. But once they’re California residents and one of them dies, that Ohio-earned property gets treated as quasi-community property, and the surviving spouse’s half is protected the same way an actual community property half would be. This surprises a lot of families who assume California’s community property rules only apply to what was earned after they crossed the state line.

Debts and administration expenses: Probate Code § 102-103

Probate Code § 102 and § 103 address how community property remains liable for the deceased spouse’s debts during administration, and how administration expenses get allocated between the two halves. This is where the “already owns it” framing gets a real-world qualifier: a surviving spouse’s half isn’t automatically shielded from every claim against the estate. If the deceased spouse ran up significant credit card debt, owed taxes, or is subject to a creditor claim, community property, potentially including part of what would otherwise be treated as the survivor’s half, can be reached to satisfy those obligations depending on when and how the debt was incurred. Trustees need to work through which debts attach to which half, and in what order, before finalizing any distribution. This is also where the general creditor claims framework matters: absent the optional trust creditor-claim procedure under Probate Code § 19000 et seq., the general limitations period for claims against a decedent is one year under Code of Civil Procedure § 366.2, though the § 19000 procedure can shorten that window to roughly four months if the trustee elects to use it.

How this actually plays out: a worked example

Take a couple married thirty years with a house worth $1.2 million, two retirement accounts worth a combined $600,000, and a joint brokerage account worth $300,000, all acquired during the marriage and all community property. The husband dies first, leaving a trust that splits his estate between his wife and two adult children from a first marriage.

Here’s what actually happens. The wife already owns half the house ($600,000), half the retirement accounts to the extent they’re community property ($300,000), and half the brokerage account ($150,000). None of that is what the trustee distributes to her. That’s what she walked in owning the moment her husband died, regardless of what his trust says.

What the trust actually administers is the husband’s half of those same assets: $600,000 of home equity, $300,000 of retirement funds, $150,000 of the brokerage account, a total of $1.05 million. If his trust directs his half to be split between his wife and his two children, that $1.05 million gets divided according to those terms. The wife’s outright ownership of her own $1.05 million half stays completely separate from that calculation. She isn’t sharing her half with the children; she never needed the trust’s permission to have it.

Now compare that to a simpler, more typical trust that leaves everything to the surviving spouse outright. In that case the distinction feels academic, because she ends up with the whole $2.1 million either way. But the distinction stops being academic the moment a trust has any provision that doesn’t simply mirror “everything to my spouse,” a subtrust with different terms, children from a prior marriage, a specific bequest to someone else. That’s exactly when the difference between “what she owns” and “what the trust distributes” determines the actual dollar outcome, and it’s exactly when trustees most need to get the characterization right before writing any checks.

The tax consequence for the surviving spouse

Because the entire community property asset gets a stepped-up basis to date-of-death fair market value under federal tax law, not just the deceased spouse’s half, the surviving spouse benefits from the step-up on their own half too, even though they never stopped owning it and even though nothing was “distributed” to them. This is one of the more favorable rules unique to community property states and a real reason to get the characterization right at the outset rather than treat it as a formality. If that $600,000 house had a $200,000 original cost basis, the full $1.2 million value gets a new basis at the husband’s death, on both halves, wiping out $1 million of embedded gain for tax purposes rather than just the $500,000 embedded in his half alone. Our page on community property step-up versus separate property step-up covers the mechanics of why community property gets this full step-up treatment when separate property held in joint tenancy typically does not.

What trustees should actually do

Confirm which assets are community property, which are separate, and whether a transmutation agreement or a Prop 19 property tax reassessment issue is in play before finalizing any accounting. Getting the community property characterization right first is what makes the survivor’s half calculation possible at all; it isn’t a step you can skip or approximate. Recognize explicitly, in your own analysis and in your communication with the surviving spouse, that their community property half isn’t a distribution decision you’re making. It’s a legal entitlement that exists independent of the trust’s terms. Where the trust and the survivor’s statutory rights interact in a complicated way, blended families, separate subtrusts, specific bequests that eat into the deceased spouse’s half, get the characterization and entitlement analysis right before any checks go out.

The honest caveat

None of this protects a surviving spouse from a legitimately difficult trust. If the deceased spouse’s half is genuinely earmarked for other beneficiaries under valid trust terms, the survivor’s statutory rights don’t expand to cover more than their actual half, no matter how uncomfortable the outcome feels. And a surviving spouse who assumes the “everything is community property” default without verifying it, especially where separate property, a transmutation agreement, or commingled assets are involved, can end up with a smaller share than expected once the actual characterization gets worked out. The rule protects what’s genuinely theirs. It doesn’t inflate a claim beyond that.

Talk to a real California estate attorney

If you’re a surviving spouse trying to understand what you already own versus what the trust is deciding to give you, or a trustee trying to get the community property calculation right before distributing anything, this is worth getting right the first time.

Talk to Eric Ridley is a free 60-minute consultation by phone or Zoom, anywhere in California. Or call (805) 244-5291. You’ll leave knowing where you stand, whether or not you hire me.

Frequently asked questions

What is a surviving spouse entitled to during trust administration in California?

Under Probate Code section 100, a surviving spouse already owns half of the couple’s community property the moment the first spouse dies. That half was never the deceased spouse’s to give away and doesn’t pass to the survivor as an inheritance. The trust only controls the deceased spouse’s half of the community property plus their separate property.

Is a surviving spouse’s community property half considered a distribution from the trust?

No. It’s a pre-existing ownership interest, not something the trustee decides to give them. The trustee administers and distributes the deceased spouse’s half according to the trust’s terms, but the surviving spouse’s own half was theirs before the death and stays theirs regardless of what the trust says.

What is quasi-community property and does it work the same way?

Quasi-community property, addressed in Probate Code section 101, is property that would have been community property if the couple had acquired it while living in California, typically assets acquired during the marriage in another state before moving here. On the first spouse’s death, it’s treated much like actual community property for the survivor’s half.

Can the deceased spouse’s debts reach the surviving spouse’s half of the community property?

Sometimes. Probate Code sections 102 and 103 address how community property remains liable for the deceased spouse’s debts and how administration expenses get allocated during administration. A surviving spouse’s half isn’t automatically shielded from every creditor claim, which trustees need to work through before finalizing distributions.

Does the surviving spouse get a stepped-up tax basis on their own half of community property?

Yes. Under federal tax law, the entire community property asset receives a stepped-up basis to date-of-death fair market value, not just the deceased spouse’s half. The surviving spouse benefits from the step-up on the half they already owned, which is one of the more favorable rules unique to community property states.

This is general information about California law, not legal advice for your situation.

Surviving Spouse Rights in Trust Administration (California)