Legal Standards, Proof, and Remedies

Under California estate law, fiduciaries—including trustees, executors, and administrators—are legally obligated to act in the best interests of beneficiaries. These duties include loyalty, care, impartiality, and transparency, as defined in the California Probate Code and interpreted by courts. 

At the bottom of the post we provide links to relevant sections of the California Probate Code. In the Explainer section we include a few definitions of terms for non-attorneys. For additional information, read our previous post — Effectively Prosecuting Failures to Comply with Fiduciary Responsibilities. 

What Constitutes a Breach?

A breach of fiduciary duty occurs when a fiduciary fails to meet these obligations. Common breaches include: 

1. Self-dealing 
2. Mismanagement of assets 
3. Failure to disclose material information 
4. Inadequate record-keeping 
5. Neglecting to provide required accountings 

California law prohibits conflicts of interest and requires fiduciaries to maintain accurate records and act prudently in investment decisions. 

Statutory Authority

Under California Probate Code §9601, a personal representative who breaches fiduciary duty may be held liable for: 

1. Loss or depreciation in estate value resulting from the breach, with interest 
2. Profits made through the breach, with interest 
3. Profits that would have accrued to the estate but for the breach 

The court may excuse liability if the fiduciary acted reasonably and in good faith under the circumstances. 

For trustees, Probate Code §16420 authorizes beneficiaries or co-trustees to seek remedies including: 

1. Compelling the trustee to perform duties 
2. Enjoining further breaches 
3. Redressing breaches through monetary payment or other means 
4. Removing the trustee 
5. Imposing equitable liens or constructive trusts 
6. Tracing and recovering wrongfully disposed property 

Additional remedies under §16440 include recovery of lost value, disgorgement of profits, and compensation for unrealized gains. 

Proving a Breach

To establish a breach of fiduciary duty in California, the plaintiff must prove: 

1. A fiduciary relationship existed 
2. The fiduciary breached a specific duty 
3. The breach caused harm 
4. Damages resulted from the breach 

Evidence may include financial records, communications, witness testimony, and expert analysis. The burden of proof initially lies with the plaintiff. If a prima facie case is made, the fiduciary must demonstrate that actions were taken in good faith and were fair to beneficiaries. 

Litigation Risk and Remedies

Fiduciaries may face personal liability for losses suffered by beneficiaries. Courts may impose compensatory damages, punitive damages, or equitable remedies. Trustees and executors may be removed, surcharged, or denied compensation. In some cases, they may be required to reimburse beneficiaries for legal costs. 

California imposes strict compliance requirements on fiduciaries. Trustees must avoid conflicts of interest, act impartially, and exercise reasonable care and skill in managing assets. Self-dealing is prohibited. Litigation is a frequent outcome, especially in cases involving well-informed beneficiaries who actively monitor fiduciary conduct. 

California Probate Code

For further reference, the full text of the relevant provisions of the California Probate Code can be accessed on FindLaw.  

• California Probate Code §9601: Addresses personal representative liability for breach of fiduciary duty in estate administration. 
• California Probate Code §16420: Outlines remedies available to beneficiaries and co-trustees in cases of trustee breaches. 
• California Probate Code § 6440: Provides for recovery of estate losses, profits, and unrealized gains related to fiduciary breaches. 

Explainer

For non-lawyers reading this post, here are brief definitions of fiduciary, trustees, executors, and administrators under California law: 

• A fiduciary is a person who is legally obligated to act in the best interests of another party—typically a beneficiary or principal. In California estate law, fiduciaries include trustees, executors, and administrators. They must exercise loyalty, care, impartiality, and transparency, and avoid conflicts of interest or self-dealing. Breaching these duties can result in personal liability, removal from their role, and other legal consequences. 
• A trustee is a person or institution appointed to manage assets held in a trust according to the terms of the trust document and California law. Trustees owe fiduciary duties to the beneficiaries, including duties of loyalty, impartiality, prudence, and full disclosure. Their responsibilities include managing trust property, making distributions, keeping records, and providing accountings. Trustees are governed primarily by the California Probate Code §§16000–16500.
• An executor is named in a decedent’s will to carry out the instructions of the will. Executors are responsible for collecting and managing estate assets, paying debts and taxes, and distributing property to beneficiaries. Like trustees, executors are fiduciaries and must act in the best interests of the estate and its beneficiaries. Their authority comes from the will and is formalized by the probate court through issuance of letters testamentary.
• An administrator performs the same functions as an executor but is appointed by the probate court when a person dies without a will (intestate) or when the named executor is unable or unwilling to serve. Administrators receive letters of administration from the court and must follow California’s intestate succession laws when distributing assets. They are also fiduciaries and subject to oversight under the California Probate Code. 

Contact

If you have questions about any of the information provided here, contact us or reach out to one of our experienced estate litigation attorneys. You also can call us at 866-330-0578. We look forward to assisting you.

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Disclaimer: This article is intended for informational purposes only and does not constitute legal advice. Reading this content does not create an attorney–client relationship. If you have questions about your specific legal situation, you should consult a qualified attorney licensed to practice in your jurisdiction. This content is provided in accordance with the California Rules of Professional Conduct governing attorney advertising and public communications.