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Can You Sue a Trustee for Negligence in California? A Full Guide.

When someone places their faith in a trustee to manage trust assets, they expect diligent care and responsible management. But what happens when that trustee fails to uphold their responsibilities? Can a beneficiary take legal action against the trustee? The short answer is yes — you can sue a trustee for negligence, but knowing when and how to take legal action requires careful consideration of specific circumstances.

Our Northern California trust administration attorneys at Barr & Douds have guided countless beneficiaries through these complex situations, helping them protect their interests and hold negligent trustees accountable.

What Is Trustee Negligence?

Trustee negligence occurs when someone managing trust property fails to exercise reasonable care in administering the trust. This goes beyond simple mistakes — it involves a pattern of carelessness that violates the trustee’s fiduciary duty to act in the best interests of beneficiaries. Under California law, trustees must properly manage trust funds with the same care a prudent person would use with their own personal assets.

Types of Trustee Negligence

Several forms of negligence can justify legal action against a trustee:

  • Mismanagement of Trust Assets: Failing to invest trust property wisely or allowing assets to lose market value through inaction.
  • Self-Dealing: Using trust funds for personal benefit rather than benefitting beneficiary interests.
  • Poor Record-Keeping: Not maintaining accurate records or failing to file necessary tax returns.
  • Communication Failures: Refusing to keep beneficiaries informed about trust administration matters.
  • Delayed Distribution: Unreasonably withholding or delaying distributing assets to rightful beneficiaries.

Signs Your Trustee May Be Negligent

Watch for these red flags that might indicate trustee negligence:

  • Missing or incomplete accountings of trust assets.
  • Unexplained losses or lost property within the trust.
  • Refusal to provide thorough records when requested.
  • Mixing trust funds with the trustee’s personal assets.
  • Making decisions that benefit their self-interest over beneficiaries.
  • Ignoring the specific instructions in the trust document.

Recognizing these warning signs early can make the difference between recovering losses and watching trust assets disappear. If you notice multiple red flags, documenting them immediately strengthens your position for potential legal action.

Not every disagreement with a trustee’s actions constitutes grounds for litigation. To successfully sue a trustee for negligence, you must demonstrate specific elements that prove breach of fiduciary duty.

The trust instrument itself often outlines trustee duties and responsibilities. When a trustee breaches these obligations and caused harm to beneficiaries, legal recourse becomes available. Valid reasons to pursue trust litigation include, but are not limited to:

  • Failure to act in good faith when managing trust property.
  • Violations of probate law governing trust administration.
  • Actions that directly contradict the trust document’s instructions.
  • Decisions that prioritize personal benefit over beneficiary rights.

Remember that trustees have personal liability for their negligent actions. This means a beneficiary can sue not just to recover trust assets but potentially to seek damages from the trustee’s personal assets as well.

Steps to Take After Discovering Trustee Negligence in CA

If you suspect trustee misconduct, taking prompt action protects your interests and preserves your legal options:

How to Sue for Trustee Negligence

Step 1: Document Everything

Start gathering evidence immediately. Request copies of all trust-related documents, including:

  • The original trust instrument
  • Financial statements and accountings
  • Investment records
  • Correspondence regarding trust matters

Create a detailed timeline of suspicious activities and maintain copies of all communications with the trustee. Screenshot any concerning transactions, photograph physical trust property if accessible, and keep notes of phone conversations including dates and what was discussed. This documentation becomes crucial evidence if you need to prove the trustee breached their fiduciary duty or failed to act in good faith. Store everything securely and organize it chronologically to help your attorney build a strong case.

Step 2: Request a Formal Accounting

California law gives beneficiaries the right to demand regular accountings. The request should be in writing and can request, among other things, comprehensive financial records showing how the trustee has managed trust assets. Your request can be specific, such as requesting: bank statements, investment portfolios, receipts for expenses, records of distributions, and explanations for any significant transactions. Send this request via certified mail to create a paper trail. If the trustee fails to respond within 60 days or provides incomplete information, this refusal itself becomes evidence of potential negligence and strengthens your position for taking legal action.

Step 3: Consult a Trust Litigation Attorney

Seeking legal advice early helps you understand your rights and evaluate whether the trustee’s actions constitute actionable negligence. An experienced attorney can assess whether you have grounds for legal claim against the trustee.. During your initial consultation, bring all documentation you’ve gathered and prepare a summary of your concerns. Your attorney will analyze whether the trustee’s conduct is actionable, calculate potential damages, and explain your legal options.

Step 4: Attempt Resolution Outside Court

Before filing suit, consider sending a formal demand letter outlining your concerns. Sometimes trustees will correct their behavior or resign when confronted with evidence of their failures. Your attorney can draft a powerful letter that details specific breaches, demands corrective action, and sets deadlines for compliance.

Step 5: File Legal Action if Necessary

If the trustee refuses to address legitimate concerns, your attorney can help you file a petition with the probate court to remove the trustee and seek appropriate remedies. The petition will detail how the trustee breached their duties, request their removal and replacement, and seek recovery of losses caused by negligence.

Trust Administration

Stop Trustee Misconduct Before Damage Is Suffered

Let our attorneys evaluate your situation and help you take swift legal action now.

How to Increase Your Chances of Proving Trustee Negligence and Winning Your Case

Building a strong case against a negligent trustee requires strategic preparation and compelling evidence. Success depends on demonstrating clear violations of the trustee’s fiduciary duty through documented failures and quantifiable losses.

Key elements for proving your case in California include:

  • Clear evidence showing how the trustee failed to meet their obligations under the trust document.
  • Documentation of financial losses or missed opportunities due to trustee inaction.
  • Proof that the trustee’s actions (or inactions) directly caused harm to beneficiary interests.
  • Records showing violations of California law regarding trust administration.
  • Evidence of self-dealing or prioritizing personal gain over trust beneficiaries.
  • Documentation of failure to maintain proper records or provide required accountings.
  • Testimony from other beneficiaries about the trustee’s pattern of negligence.

Your attorney will help calculate damages, which might include actual losses to trust assets, lost investment opportunities, and in cases of egregious misconduct, punitive damages. The goal extends beyond simply removing the negligent trustee — it includes recovering losses and ensuring proper trust administration moving forward.

Conclusion

Taking legal action against a trustee is a consequential decision, but beneficiaries deserve trustees who honor their responsibilities and manage trust assets with appropriate care. When trustees abandon their duties or act carelessly with trust property, the law provides clear remedies. The complexities of trust litigation demand guidance from attorneys who focus on these matters daily.

Our team at Barr & Douds Attorneys stand ready to evaluate your situation and help determine the most effective path forward. Don’t let a negligent trustee compromise your inheritance. Contact us for a free consultation to discuss how we can help protect your rights as a beneficiary and ensure your trust receives the careful management it deserves!

Loren Barr
by Loren Barr
Updated: January 30, 2026

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