Breach of Fiduciary Duty in California Divorce: Remedies and Deadlines

A breach of fiduciary duty in a California divorce gives you the right to recover 50 percent of any asset your spouse hid or mishandled, 100 percent if the conduct involved fraud, oppression, or malice, plus the attorney’s fees and costs you spent to uncover it.¹²³

What Counts as a Breach

A breach happens whenever one spouse’s financial conduct harms the other’s interest in the community estate. Some breaches are deliberate; others come from carelessness or spite. The patterns that show up most often:

Hiding a bank account, investment portfolio, retirement account, or cryptocurrency holding.
Understating what a community-owned business is worth, deflating income figures, or producing a false appraisal of real property.
Selling or giving away community property without the other spouse’s written consent.³
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 without the other spouse’s knowledge.

Cryptocurrency is where breaches increasingly go undetected. Unlike a brokerage or bank account that generates statements mailed to a shared address, crypto can sit in a digital wallet with no tie to a traditional institution. Uncovering it usually requires subpoenas to exchanges like Coinbase, which hold records of account ownership, transaction histories, and transfer data, and often a forensic accountant trained to follow funds through multiple wallets and entities.

Separate from Sections 721 and 1100, the automatic temporary restraining orders printed on the family law summons also forbid selling, hiding, or encumbering property, canceling or changing beneficiaries on insurance, and modifying nonprobate transfers once a divorce is filed.⁴ Violating those orders is a breach of fiduciary duty on top of being contempt of court.

What Your Spouse Was Required to Disclose

California enforces fiduciary duty mainly through mandatory financial disclosures. If your spouse failed to produce them accurately, that failure is itself a breach.

Each spouse must serve a Preliminary Declaration of Disclosure. The petitioner has 60 days from filing the petition, and the respondent has 60 days from filing their response.⁵ It must list every asset the spouse has or may have any interest in, every debt the spouse is or may be liable for (community or separate), a current Income and Expense Declaration, and all tax returns filed in the two years before the disclosure. Most people use Schedule of Assets and Debts form FL-142 for the list.⁶ Everything is signed under penalty of perjury.

Before signing a settlement, or no later than 45 days before trial, each spouse must serve a Final Declaration of Disclosure updating the preliminary information with current values and any changes. The parties can mutually waive the Final Declaration, but only if both have already exchanged preliminary disclosures, provided current income and expense declarations, and fully updated their financial information. The waiver must be signed under penalty of perjury.⁷ Lying on either declaration can support setting aside the resulting judgment and may expose the spouse to criminal perjury charges.

What You Can Recover

The Standard Remedy: 50 Percent Plus Fees

The baseline award is 50 percent of the value of any 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 the highest of three dates: when the breach occurred, when the asset was sold or disposed of, or the date of the award itself.¹ That valuation rule matters. If your spouse sold off $200,000 in stock that would have been worth $300,000 by the time the court rules, your 50 percent is calculated against $300,000.

The Aggravated Remedy: 100 Percent

When the breach involves oppression, fraud, or malice, the court can award the wronged spouse 100 percent of the undisclosed or mishandled asset’s value.¹ Courts reserve this for deliberate schemes to defraud. Instead of recovering your rightful half, you take the whole 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 your name to community property held solely in your spouse’s name. Limited exceptions apply to partnership interests, professional corporations, and situations where changing title would harm a third party.¹

Sanctions for Disclosure Failures

If your spouse refuses to produce the required information, the court can compel a response, bar them from presenting evidence on the issues they failed to disclose, and order them to pay your attorney’s fees. Those sanctions are mandatory unless the court finds the noncompliance was substantially justified.⁸

Proving the Breach When Your Spouse Won’t Cooperate

Mandatory disclosures only work when both sides participate honestly. When yours doesn’t, California gives you several ways to dig:

Written interrogatories your spouse must answer under oath, covering income sources, account holdings, and recent transfers.
Requests for production demanding bank statements, tax returns, pay records, loan applications, and online payment account records.
Subpoenas to employers, banks, investment platforms, and cryptocurrency exchanges. Subpoenas are often the only way to reach accounts your spouse never disclosed; for crypto, they can show when an account was opened, how funds moved, and where they went.
Depositions, where your spouse is questioned under oath in person. Experienced attorneys typically wait until the paper trail is assembled so they can confront the spouse with specific transactions.

Deadlines for Bringing a Claim

A breach of fiduciary duty claim generally must be filed within three years of the date you actually learned about the transaction or event.¹ The clock runs from actual knowledge, not from when the breach happened.

There is an important exception. When the breach claim is raised as part of a divorce, legal separation, or nullity proceeding, the three-year limit does not apply.¹ A spouse filing for divorce can pursue a breach from years earlier, as long as it occurred on or after July 1, 1987. A standalone claim without filing for divorce is also allowed. Even then, unreasonable delay after you discover the breach can be held against you under the defense of laches, so waiting without a good reason is risky.

Reopening a Divorce That Is Already Final

Breaches often surface after the judgment is entered. If your ex hid assets or lied on disclosure forms, you can ask the court to set aside the judgment, in whole or in part.

When the breach involved a failure to comply with the disclosure rules, the court is required to set the judgment aside. The failure is not treated as harmless error.⁸ 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.⁷

When fraud or perjury is involved, your motion to set aside must generally be filed within one year of discovering the misconduct, or within one year of when a reasonable person in your position should have discovered it. A court will not reopen a judgment just because the division turned out unequal in hindsight or because circumstances changed afterward. You have to show that your ex’s concealment or dishonesty actually affected the outcome.

1
California Legislative Information. California Family Code – Section 1101
2
California Legislative Information. California Family Code – Section 721
3
California Legislative Information. California Family Code – Section 1100
4
California Legislative Information. California Family Code – Section 2040
5
California Legislative Information. California Family Code – Section 2104
6
California Courts Self-Help. Judicial Council Form FL-142
7
California Legislative Information. California Family Code – Section 2105
8
California Legislative Information. California Family Code – Section 2107