A breach of fiduciary duty in a California divorce happens when one spouse hides assets, misrepresents finances, or handles community property in a way that harms the other’s interest in the marital estate. California Family Code Section 721 holds spouses to the “highest good faith and fair dealing” with each other, and when a court finds that standard was violated, it can award the wronged spouse 50 percent, and sometimes 100 percent, of the affected asset, plus attorney’s fees.1California Legislative Information. California Family Code – Section 7212California Legislative Information. California Family Code – Section 1101
The Duty California Imposes on Spouses
California treats the marital financial relationship like a business partnership. Under Section 721, each spouse must provide full and accurate information about any transaction affecting the community estate on request, allow the other spouse to inspect financial records at any time, and account for any benefit or profit taken from community property without the other spouse’s consent.1California Legislative Information. California Family Code – Section 721
Section 1100 layers on specific restrictions during day-to-day management of community personal property. Either spouse can manage it, but neither can make a gift of community property, sell it for less than fair value, or sell community property that serves as the family home or its furnishings without the other spouse’s written consent.3California Legislative Information. California Family Code – Section 1100
The duty starts at marriage, continues through separation, and does not end until every community asset and debt has been divided by agreement or court order.3California Legislative Information. California Family Code – Section 1100 A spouse who acts as if the estate is already divided, before the court says so, is exposed.
What Counts as a Breach
A breach occurs whenever one spouse’s financial conduct harms the other’s interest in the community estate. Some breaches are calculated; others come from carelessness or spite. The recurring patterns:
- Hiding a bank account, investment portfolio, retirement account, or cryptocurrency holding. Digital assets are especially easy to conceal because they may not appear on any traditional statement and can be held through exchanges, private wallets, or business entities.
- Understating what a community-owned business is worth, deflating income figures, or producing false appraisals.
- Selling or giving away a community asset without the other spouse’s knowledge and written consent.3California Legislative Information. California Family Code – Section 1100
- Transferring community funds or property to a new partner, friend, or relative for less than fair value.
- Intentionally damaging or destroying community assets.
- Running a community-owned business into the ground through neglect or intentional mismanagement.
- Taking on significant new debt that burdens the community estate without the other spouse’s knowledge.
Lying on the sworn financial disclosures that California requires during a divorce is itself a breach, and it opens the door to some of the most severe remedies below.
Automatic Restraining Orders in a Pending Divorce
The moment a divorce petition is filed, California imposes automatic temporary restraining orders (ATROs) on both spouses. They are printed on the back of the family law summons and take effect against the filing spouse immediately and against the other spouse once the summons is served.4California Legislative Information. California Family Code – Section 2040
While the ATROs are in place, neither spouse can:
- Sell, encumber, conceal, or dispose of any property, community or separate, without the other spouse’s written consent or a court order. Ordinary living expenses and the usual course of business are allowed.
- Make an extraordinary expenditure without giving the other spouse at least five business days’ notice, and each spouse must account to the court for such spending after service of the summons.
- Cancel, cash out, or change the beneficiaries on life, health, auto, or disability policies that cover either spouse or the children.
- Create or change a nonprobate transfer, such as a trust or payable-on-death account, that would affect how property passes.
Either spouse may use community or separate property to pay reasonable attorney’s fees, but must account for it.4California Legislative Information. California Family Code – Section 2040 Violating an ATRO is both a breach of fiduciary duty and contempt of court.
What the Court Can Order When a Breach Is Proven
The remedies scale with how bad the misconduct was.
The 50 Percent Award
The baseline remedy under Family Code Section 1101 is an award to the wronged spouse of 50 percent of the value of the asset that was hidden or improperly transferred, plus attorney’s fees and court costs incurred to uncover the breach. The court values the asset at its highest price among three dates: the date of the breach, the date the asset was sold or disposed of, or the date of the court’s award.2California Legislative Information. California Family Code – Section 1101
That valuation rule can matter more than the percentage. If a spouse quietly sold off $200,000 in stock that would have been worth $300,000 by the time the court rules, the award is calculated on the $300,000 figure.
The 100 Percent Award
When the breach involves oppression, fraud, or malice, the court can award the wronged spouse 100 percent of the asset’s value.2California Legislative Information. California Family Code – Section 1101 Courts reserve this remedy for deliberate schemes to defraud a spouse. The practical difference is stark. Instead of recovering the half you would have received anyway, you take the entire asset, and the breaching spouse walks away with nothing from it.
Accounting and Title Changes
Beyond money, the court can order a full accounting of all marital property and obligations, and it can add the wronged spouse’s name to community property that was held solely in the breaching spouse’s name. Limited exceptions apply for partnership interests, professional corporations, and situations where reforming title would harm a third party’s rights.2California Legislative Information. California Family Code – Section 1101
Proving the Breach
California enforces the fiduciary duty largely through mandatory financial disclosures. Each spouse must serve a Preliminary Declaration of Disclosure: the petitioner within 60 days of filing the petition, the respondent within 60 days of filing the response. It must list all assets and debts the spouse has or may have an interest in, an Income and Expense Declaration, and all tax returns filed in the prior two years, all signed under penalty of perjury.5California Legislative Information. California Family Code – Section 2104
Before signing a settlement, or no later than 45 days before trial, each side must serve a Final Declaration of Disclosure with updated values and any changes. The parties can mutually waive the Final Declaration only after fully exchanging preliminary disclosures and current income and expense information, with the waiver signed under penalty of perjury.6California Legislative Information. California Family Code – Section 2105
When a spouse stonewalls, the usual civil discovery tools apply: written interrogatories, requests for documents, subpoenas directed at employers, banks, brokerages, and cryptocurrency exchanges, and depositions under oath. If a spouse still refuses to comply, the court can compel a response, block the noncompliant spouse from presenting evidence on the concealed issues, and impose monetary sanctions including attorney’s fees. Those sanctions are mandatory unless the court finds the noncompliance was substantially justified.7California Legislative Information. California Family Code – Section 2107
How Long You Have to Sue
A breach of fiduciary duty claim must generally be filed within three years of the date the wronged spouse actually learned about the transaction. The clock runs from actual knowledge, not from when the breach happened.2California Legislative Information. California Family Code – Section 1101
Two things soften that limit. When the claim is raised as part of a divorce, legal separation, or nullity proceeding, the three-year period does not apply, so long as the breach occurred on or after July 1, 1987. And a breach claim can be brought as a standalone action without filing for divorce.2California Legislative Information. California Family Code – Section 1101 Even so, an unreasonable delay after discovering a breach can be held against you under the defense of laches.
Finding Out After the Divorce Is Final
Sometimes the concealment does not surface until the judgment is signed. A spouse who then discovers hidden assets or false disclosures can move to set aside the judgment, but the window is limited.
If the breach involved a failure to comply with the disclosure rules, the court is required to set aside the judgment; the failure is not treated as harmless error. The court may limit the set-aside to the portions of the judgment materially affected by the missing information rather than unwinding the entire divorce.7California Legislative Information. California Family Code – Section 21076California Legislative Information. California Family Code – Section 2105
When the ground is fraud or perjury, the motion must generally be brought within one year of discovering the misconduct, or within one year of when a reasonable person in the same position should have discovered it. A judgment will not be set aside simply because the division looked unequal in hindsight or because circumstances changed later. The moving spouse has to show the concealment or dishonesty actually changed the outcome.