Trustees aren't just standing in for someone. They're fiduciaries bound by the California Probate Code, and mistakes here can create personal liability. Courts can remove trustees, surcharge them for losses, or hold them financially responsible for breaches.
This guide covers the core duties, the day-to-day workload, how to pick the right person for the job, and the mistakes that get trustees into trouble.
Key Takeaways
- Trustees must act solely in beneficiaries' interests under California Probate Code standards
- Loyalty, impartiality, prudent investing, recordkeeping, and clear communication define the core trustee duties
- The right trustee plus a fully funded trust prevents most later disputes
- A clear trust document locks in trustee powers, successors, and distribution terms up front
What Is a Trustee and Why the Role Matters
A trustee is the person or entity legally responsible for managing trust assets for beneficiaries, according to the trust document and California law. The Santa Clara Superior Court puts it simply: the trustee holds legal title to trust property, while the settlor (the person who created the trust) directed how that property should be managed and distributed to beneficiaries.
Every trust has three key players:
- Grantor/settlor — creates the trust and transfers assets into it
- Trustee — manages those assets according to the trust's instructions
- Beneficiaries — receive the benefit of the trust assets
In a typical revocable living trust, the grantor often serves as their own trustee while they're alive and competent. A successor trustee only steps in after the grantor dies or becomes incapacitated.
Here's the part people miss: holding legal title doesn't mean personal ownership. A trustee manages assets purely for beneficiaries' benefit, never for personal gain. That distinction is the foundation of every duty that follows.
Core Fiduciary Duties Every California Trustee Must Understand
California Probate Code lays out specific, non-negotiable obligations. Ignoring them is a legal breach.
Duty of Loyalty
Trustees must administer the trust solely in beneficiaries' interests, avoiding self-dealing and conflicts of interest entirely. A trustee who uses trust funds to invest in their own business, or sells trust property to a family member at a discount, has breached this duty.
In Giraldin v. Giraldin (California Supreme Court, 2012), remainder beneficiaries challenged the trustee's conduct during the trust's revocable period after the settlor's death. The court allowed the claim to proceed, showing fiduciary breaches can create legal exposure even years later.
Duty of Impartiality
When a trust has multiple beneficiaries, current and future, a trustee must balance their interests rather than favoring one group. This matters most when a trust pays income to one beneficiary while preserving principal for another.
Duty of Prudent Administration
California's "prudent investor" standard requires trustees to:
- Evaluate investments in the context of the entire portfolio, not asset by asset
- Diversify holdings unless there's a clear reason not to
- Exercise reasonable care, skill, and caution given the circumstances
A family member with no investment background isn't expected to become a portfolio manager overnight. But they are expected to seek professional advice when needed.
Duty to Account and Report
Trustees generally must provide accountings:
- At least annually
- When the trust terminates
- When trustees change
Accountings must detail receipts, disbursements, assets, liabilities, and compensation paid. Beneficiaries also have a right to request information about the trust's administration.
Duty to Disclose and Avoid Conflicts
Failure to disclose material facts or manage conflicts of interest is one of the most common grounds for trustee removal. If a trustee stands to personally benefit from a decision, that conflict must be disclosed and independently reviewed, not quietly handled.
Day-to-Day Responsibilities of a Trustee
Beyond the legal standards, trustees handle a steady stream of practical tasks:
- Locate and secure trust assets: Identify and protect real estate, bank accounts, investment accounts, and personal property
- Retitle assets properly: Record a deed naming the trust as homeowner; title bank accounts as "[Name], Trustee of the [Trust]"
- Keep meticulous records: Use a dedicated trust bank account—commingling personal and trust funds is one of the fastest ways to trigger a breach claim
- File fiduciary tax returns on time: A trust with $600 or more in gross income generally requires a federal filing
- Distribute assets: Follow the trust's specific terms and timelines, not personal judgment
- Communicate proactively with beneficiaries: Regular updates reduce confusion and lower the risk of disputes
Asset retitling deserves extra attention. Taxable brokerage accounts, CDs, and 529 plans often require institution-specific transfer forms. Retirement accounts like IRAs and 401(k)s are the exception: these generally stay in the individual's name, with the trust named as beneficiary instead.
Choosing the Right Trustee: What California Families Should Consider
Picking a trustee is one of the most consequential decisions in a trust document, and it's often made without much thought.
Look for these qualities:
- Integrity and trustworthiness
- Basic financial know-how (or willingness to hire professional help)
- Strong organizational skills
- Availability for duties that can last years or decades
Family Trustee vs. Professional Trustee
For a straightforward trust, a spouse, adult child, or close friend often works fine, provided they're honest, detail-oriented, and communicative. They don't need to be financial experts if they're willing to get advice.
Professional or corporate trustees make more sense when:
- The estate holds significant or complex assets
- The trust is designed to last a long time
- Family dynamics suggest disputes are likely (blended families are a common example)
Whoever you name, plan for continuity. A properly drafted trust names successor trustees explicitly, spelling out their authority so there's never a gap if the first trustee can't serve. A three-tier structure—primary trustee, backup trustee, and a professional fallback—is a common, effective approach.
Common Trustee Mistakes and Liability Risks
Most trustee problems trace back to a handful of recurring errors:
- Commingling funds: mixing personal and trust money in the same account
- Delaying communication: leaving beneficiaries in the dark for months
- Distributing assets without checking the trust terms: acting on assumptions instead of the actual document
- Ignoring tax deadlines: missing fiduciary filing requirements
- Never fully funding the trust: leaving assets outside the trust so probate avoidance fails
Any of these errors can lead to removal from office or personal liability for losses the trust suffers.
Under California Probate Code Section 15642, courts can remove a trustee for breach of trust, unfitness, hostility between co-trustees, or failure to act. The Probate Code also allows beneficiaries to seek monetary redress for losses caused by a breach, which is the legal basis for what's often called a "surcharge."
Here's the uncomfortable truth: many of these problems don't start with the trustee. They start with a poorly drafted trust that lacks clear instructions, or an unfunded trust that never put the assets under the trustee's control.
Getting Your California Trust Properly Prepared and Funded
A trustee's job is only as clear as the trust document itself. Vague, outdated, or incomplete trusts create most of the disputes described above, and no amount of good intentions fixes a document that never named a clear successor or spelled out distribution terms.
Marco Mariani has seen this firsthand. As HomeTrust's founder and a Licensed Document Assistant (LDA #231), he has 33 years of experience and has prepared over 10,000 California trusts.
The same funding mistakes keep showing up:
- Homes never transferred by deed
- Deeds not restored after refinancing
- New accounts left outside the trust entirely
HomeTrust's flat-rate California living trust package, starting at $409 / settlor plus recording and notary fees per Settlor, is built to close those gaps from day one. It includes:
- A California revocable living trust
- A pour-over will
- A durable power of attorney
- An advance healthcare directive
- A Certificate of Trust
- A grant deed transferring your primary residence into the trust
- Required California forms (PCOR and Prop 19 exclusion)
- Step-by-step funding guidance and a checklist
Preparation typically takes 1–3 business days, plus notary and county recorder fees. The package also includes successor-trustee planning during your consultation and a plain-English Trustee's Administration Guide once documents are signed.
For trusts that already exist but were never properly funded, HomeTrust's Trust Rescue service reviews the trust, checks funding gaps, and prepares corrective deeds or amendments where needed.
Frequently Asked Questions
Who is the best person to be the trustee of a trust?
The best trustee is trustworthy, financially capable, and fair to all beneficiaries. A responsible family member often works for simple estates; complex or high-value estates may need a professional trustee.
Who cannot act as a trustee?
Minors and individuals lacking legal capacity generally cannot serve as trustees. Someone with a disqualifying conflict of interest, such as a documented history of fraud, may also be barred or later removed.
What are the three requirements for a trust to be valid?
A valid trust generally needs a written trust document, an identifiable beneficiary, and a trustee willing to accept the role—all properly executed under California law.
Can a trustee be held personally liable in California?
Yes. Breaches of fiduciary duty, such as self-dealing or commingling funds, can lead to personal liability, monetary surcharge, or removal from the role under California Probate Code provisions.
How does a trustee get paid?
Compensation is usually set in the trust document or as "reasonable compensation" under California law. Family trustees often serve free or for a modest fee; professionals typically charge hourly or a percentage of assets.
What happens if a trust isn't properly funded?
Assets left outside the trust may still go through probate, defeating the trust's purpose. Proper funding guidance makes this common mistake easy to prevent.
