California Bar Fiduciary Duties
Last updated: May 2, 2026
Fiduciary Duties questions are one of the highest-leverage areas to study for the California Bar. This guide breaks down the rule, the elements you need to recognize, the named traps that catch most students, and a memory aid that scales to test day. Read it once, then practice the same sub-topic adaptively in the app.
The rule
A trustee owes the beneficiaries a series of strict fiduciary duties grounded in equity and codified in the California Probate Code §§ 16000-16105: loyalty (no self-dealing or conflicts), prudent administration, impartiality among beneficiaries, segregation and earmarking of trust property, the duty to take and keep control, the duty to make trust property productive, the duty to inform and account, and the duty to enforce and defend claims. A personal representative of a decedent's estate owes parallel duties under Probate Code §§ 9600-9606 and is held to the standard of care of a prudent person dealing with the property of another. The duty of loyalty is absolute: any transaction between the trustee and the trust in the trustee's individual capacity is presumptively voidable by the beneficiary, regardless of fairness or good faith (the "no further inquiry" rule), unless authorized by the trust instrument, court order, or beneficiary consent after full disclosure. Remedies include surcharge for losses, disgorgement of profits, removal, and double damages under Probate Code § 859 for bad-faith takings.
Elements breakdown
Duty of Loyalty (Cal. Prob. Code § 16002)
The trustee must administer the trust solely in the interest of the beneficiaries, avoiding any transaction in which the trustee has a personal interest adverse to the beneficiaries.
- Trustee-beneficiary fiduciary relationship exists
- Trustee engaged in self-dealing or conflicted transaction
- Without informed beneficiary consent or court approval
- Transaction is voidable regardless of fairness
Common examples:
- Trustee buys trust real estate at appraised value
- Trustee deposits trust funds in trustee's own bank
- Trustee causes trust to lend money to trustee's business
Duty of Prudent Administration (Cal. Prob. Code §§ 16040, 16047 — Uniform Prudent Investor Act)
The trustee must administer the trust with the care, skill, prudence, and diligence a prudent person acting in a like capacity would use, evaluated in the context of the portfolio as a whole.
- Reasonable care, skill, and caution
- Investment decisions evaluated portfolio-wide, not asset-by-asset
- Diversification unless special circumstances justify nondiversification
- Consider trust purposes, terms, distribution requirements
- Reasonable costs given the assets and strategy
Duty of Impartiality (Cal. Prob. Code § 16003)
When a trust has two or more beneficiaries, the trustee must deal impartially with them, balancing competing interests of income beneficiaries against remainder beneficiaries.
- Multiple beneficiaries with differing interests
- Trustee must balance current vs. future beneficiaries
- No favoritism in distributions or investment allocation
- Apply Uniform Principal and Income Act allocations fairly
Duty to Segregate and Earmark (Cal. Prob. Code §§ 16009, 16010)
The trustee must keep trust property separate from the trustee's own property and clearly identified as trust property.
- No commingling with trustee's personal assets
- Trust assets titled in name of trust or trustee as trustee
- Maintain separate records for the trust
- Strict liability for losses from commingled assets
Duty to Take and Keep Control (Cal. Prob. Code §§ 16006, 16007)
The trustee must take reasonable steps to take and maintain control of trust property and to preserve it.
- Promptly take possession of trust assets
- Take reasonable steps to preserve property
- Pursue claims belonging to the trust
- Insure and protect tangible assets
Duty to Make Trust Property Productive (Cal. Prob. Code § 16007)
The trustee must make the trust property productive under the circumstances and in furtherance of the trust purposes.
- Invest non-productive assets within reasonable time
- Generate reasonable income for income beneficiaries
- Balance productivity against trust purposes and terms
Duty to Inform and Account (Cal. Prob. Code §§ 16060-16064, 16068)
The trustee must keep beneficiaries reasonably informed of the trust and its administration and must account at least annually, on termination, and on change of trustee.
- Provide trust terms on request to qualified beneficiaries
- Notify of irrevocability under § 16061.7 within 60 days
- Account annually to current beneficiaries
- Respond to reasonable requests for information
- Disclose material facts affecting beneficiary interests
Duty to Enforce and Defend Claims (Cal. Prob. Code §§ 16010, 16011)
The trustee must take reasonable steps to enforce claims belonging to the trust and to defend claims against the trust.
- Pursue collection of trust receivables
- Defend trust against unwarranted claims
- Exercise reasonable judgment about cost-benefit of litigation
Duties of Personal Representative (Cal. Prob. Code §§ 9600-9606, 9650)
The personal representative of a decedent's estate must take possession of estate property, manage it as a prudent person dealing with another's property, and is liable for losses caused by neglect or wrongful acts.
- Take possession of all estate property
- Prudent-person standard of care
- Personal liability for losses from neglect
- Court approval required for many transactions
- Bad-faith takings subject to double damages under § 859
Common patterns and traps
The "Fair Price" Self-Dealing Distractor
The fact pattern shows the trustee buying trust property or transacting with the trust at an independently-appraised fair price, often after disclosing the price to a co-trustee or accountant. A wrong choice rewards the trustee's good faith and fair dealing. Under the no-further-inquiry rule of § 16002 and § 16004, the transaction is voidable at the beneficiary's election regardless of fairness — the only safe harbors are express trust authorization, court order, or beneficiary consent after full disclosure.
"No, because the trustee paid the appraised market value and acted in good faith." — rewards fairness when the rule rejects it.
The Portfolio-vs-Single-Asset Prudence Trap
A wrong choice surcharges the trustee for a single bad-performing investment, ignoring that the Uniform Prudent Investor Act (Cal. Prob. Code § 16047) evaluates investments in the context of the portfolio as a whole and at the time of the decision, not by hindsight. The right answer focuses on diversification across the portfolio, not the performance of any one stock.
"Yes, because the trustee invested 8% of the trust in a stock that lost value." — applies asset-by-asset hindsight when portfolio-wide prospective evaluation governs.
The § 16061.7 Notice Ambush
On the death of the settlor of a revocable living trust, the successor trustee has 60 days to serve statutory notice on heirs and beneficiaries identifying the trust, the trustee, and the right to request a copy of the terms — and triggering the 120-day statute of limitations for contests. Examiners hide this in a fact pattern about a successor trustee who "informally told" beneficiaries about the trust at the funeral. Informal notice does not satisfy § 16061.7.
"No, because the trustee orally informed the beneficiaries of the trust's existence within a week of the settlor's death." — substitutes informal notice for the statutory writing.
Commingling Strict Liability
The duty to segregate and earmark (§§ 16009, 16010) imposes strict liability — the trustee is liable for any loss to commingled assets even if the loss had nothing to do with the commingling and the trustee acted in subjective good faith. A wrong choice will excuse a commingling trustee whose loss was caused by an unrelated market decline.
"No, because the market loss would have occurred regardless of how the funds were held." — ignores that commingling itself triggers liability for any subsequent loss.
The Personal-Rep vs Trustee Confusion
Examiners alternate between probate (personal representative under §§ 9600-9606) and trust (trustee under §§ 16000-16105) fact patterns. Court-confirmation requirements, bond requirements, and the Independent Administration of Estates Act apply only to personal representatives; trustees act without court supervision unless the trust requires it. A wrong answer demands court confirmation for a trustee's sale of trust real property — that's a probate rule, not a trust rule.
"No, because the trustee failed to obtain court confirmation of the sale price." — imports a probate-court requirement into a trust administration fact pattern.
How it works
Picture this: Patel is named trustee of a family trust holding a beach cottage and a brokerage account, with income to his sister Reyes for life and remainder to her children. Patel rents the cottage to his own LLC at fair market rent, deposits trust dividends into a joint account he shares with his wife for "convenience," and tells Reyes she'll get an accounting "when there's something to report." Each act independently breaches a fiduciary duty: the rental to his LLC is self-dealing voidable under § 16002 even at fair rent (no further inquiry rule); the joint deposit breaches segregation under § 16009 and exposes Patel to strict liability for any loss; the silence breaches the duty to account under § 16062, which requires at least annual accountings to current beneficiaries. Reyes can petition under Probate Code § 17200 for an accounting, surcharge, removal, and disgorgement of any profit Patel earned through the LLC. If the court finds bad faith, § 859 doubles the damages. The lesson: bar examiners stack multiple discrete breaches into one fact pattern — your job is to identify each one separately by name and statute.
Worked examples
How should the court rule on Patel's petition?
- A Deny the petition, because Liu paid $50,000 above the independently appraised fair market value and acted in subjective good faith.
- B Deny the petition, because Patel's challenge is barred by laches given the two-year delay.
- C Grant the petition, because the sale is voidable as self-dealing under California Probate Code § 16004 regardless of price, and Liu must disgorge the appreciation. ✓ Correct
- D Grant the petition only if Patel proves Liu acted with actual fraudulent intent, because California recognizes a good-faith defense to self-dealing claims.
Why C is correct: Under Cal. Prob. Code §§ 16002 and 16004, a trustee's transaction with the trust in the trustee's individual capacity is a per se conflict of interest and voidable at the beneficiary's election regardless of fairness or good faith — the so-called "no further inquiry" rule. Liu had no trust-instrument authorization, no court order, and no informed beneficiary consent. Disclosure to the accountant is irrelevant; the duty runs to beneficiaries. The proper remedy is rescission with disgorgement of any profit (here, the post-sale appreciation), under Probate Code § 16440.
Why each wrong choice fails:
- A: Fairness of price is not a defense to a self-dealing claim under § 16004 — the no-further-inquiry rule applies even when the trustee pays above appraised value. Good faith is also irrelevant to the prima facie breach. (The "Fair Price" Self-Dealing Distractor)
- B: Laches does not bar a beneficiary who lacked notice of the self-dealing transaction. Because Liu concealed the sale from beneficiaries, the limitations clock did not run, and equitable laches requires both delay and prejudice — neither shown on these facts.
- D: California does not require proof of fraudulent intent or bad faith to rescind a self-dealing transaction; § 16004 imposes a structural prohibition. Adding an intent element would convert the duty of loyalty into a fault-based standard, which it is not. (The "Fair Price" Self-Dealing Distractor)
What is the most likely outcome?
- A Patel is surcharged for the full $360,000 loss because a prudent trustee would not have invested in a single high-risk stock.
- B Patel is surcharged for the portion of the loss exceeding what a diversified tech-sector fund would have lost, because trustees must minimize concentration risk.
- C Patel is not surcharged, because under the Uniform Prudent Investor Act the prudence of any investment is evaluated in the context of the portfolio as a whole and at the time of the decision, not by hindsight. ✓ Correct
- D Patel is not surcharged only if the trust instrument expressly authorized speculative investments.
Why C is correct: Cal. Prob. Code § 16047 (the Uniform Prudent Investor Act) evaluates each investment decision "in the context of the trust portfolio as a whole and as part of an overall investment strategy," and § 16051 measures compliance based on facts and circumstances at the time of the decision, not on hindsight. A 10% allocation to a growth stock within an otherwise diversified $4 million portfolio, recommended by a qualified advisor and consistent with a written policy, satisfies the prudent investor standard. A single losing investment does not establish breach.
Why each wrong choice fails:
- A: This applies an asset-by-asset hindsight standard that the UPIA expressly rejects. Section 16047(b) requires evaluation "in the context of the trust portfolio as a whole," not by isolating losing positions. (The Portfolio-vs-Single-Asset Prudence Trap)
- B: There is no "sector-fund benchmarking" rule in the UPIA. Fashioning a hindsight surcharge based on a hypothetical alternative investment ignores the time-of-decision standard codified in § 16051. (The Portfolio-vs-Single-Asset Prudence Trap)
- D: Express authorization for "speculative" investments is not required for a 10% allocation to a single growth stock within a diversified portfolio. The UPIA's portfolio framework already permits such allocations when consistent with the overall strategy and trust purposes.
How should the court rule on Patel's motion to dismiss?
- A Grant the motion, because the daughter had actual oral notice of the trust at the funeral and the 120-day clock began running then.
- B Grant the motion, because the daughter, as a beneficiary, is charged with constructive knowledge of the trust on the date the settlor died.
- C Deny the motion, because Patel never served the statutory notice required by Cal. Prob. Code § 16061.7, so the 120-day contest period was never triggered. ✓ Correct
- D Deny the motion, because the 120-day period applies only to contests by heirs who are not also beneficiaries, and the daughter is a beneficiary.
Why C is correct: Cal. Prob. Code § 16061.7 requires the trustee of a trust that has become irrevocable to serve a written notification on each beneficiary and heir within 60 days of the triggering event (here, Reyes's death). The notification must include specified content — the trust's existence, the trustee's identity, the right to request the trust terms, and the warning that any contest must be brought within 120 days of service of the notice. The 120-day contest period under § 16061.8 runs only from service of a compliant § 16061.7 notice. Because Patel served no written notice, the limitations clock never started, and the contest is timely.
Why each wrong choice fails:
- A: Oral notice — even actual oral notice — does not satisfy § 16061.7. The statute requires a written notification with prescribed content; substitute compliance through informal communication does not start the 120-day clock. (The § 16061.7 Notice Ambush)
- B: There is no constructive-knowledge rule that triggers the 120-day period at the date of death. The clock runs from service of the § 16061.7 notification, not from death itself, precisely because beneficiaries often do not know about the trust at death. (The § 16061.7 Notice Ambush)
- D: Section 16061.8's 120-day contest period applies to anyone served with the § 16061.7 notification, including beneficiaries. The daughter's status as a beneficiary does not exempt her from the limitations period; rather, her contest is timely because no notice was ever served.
Memory aid
Trustee duties = "LIPS-CAPE": Loyalty, Impartiality, Prudence, Segregate/earmark, Control, Account/inform, Productive, Enforce. For self-dealing remember: "No Further Inquiry — voidable even if fair."
Key distinction
The duty of loyalty is absolute (no-further-inquiry — fairness is irrelevant); the duty of prudence is process-based (evaluated portfolio-wide and at the time of decision, not by hindsight). Conflate them and you'll either let self-dealers off the hook for being "reasonable" or surcharge prudent trustees for losing trades.
Summary
A trustee's duties under California Probate Code §§ 16000-16105 are strict, multiple, and independently actionable — loyalty is absolute, prudence is process-based, and silence or commingling alone is enough to trigger surcharge.
Practice fiduciary duties adaptively
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Start your free 7-day trialFrequently asked questions
What is fiduciary duties on the California Bar?
A trustee owes the beneficiaries a series of strict fiduciary duties grounded in equity and codified in the California Probate Code §§ 16000-16105: loyalty (no self-dealing or conflicts), prudent administration, impartiality among beneficiaries, segregation and earmarking of trust property, the duty to take and keep control, the duty to make trust property productive, the duty to inform and account, and the duty to enforce and defend claims. A personal representative of a decedent's estate owes parallel duties under Probate Code §§ 9600-9606 and is held to the standard of care of a prudent person dealing with the property of another. The duty of loyalty is absolute: any transaction between the trustee and the trust in the trustee's individual capacity is presumptively voidable by the beneficiary, regardless of fairness or good faith (the "no further inquiry" rule), unless authorized by the trust instrument, court order, or beneficiary consent after full disclosure. Remedies include surcharge for losses, disgorgement of profits, removal, and double damages under Probate Code § 859 for bad-faith takings.
How do I practice fiduciary duties questions?
The fastest way to improve on fiduciary duties is targeted, adaptive practice — working questions that focus on your specific weak spots within this sub-topic, getting immediate feedback, and revisiting items you missed on a spaced-repetition schedule. Neureto's adaptive engine does this automatically across the California Bar; start a free 7-day trial to see your sub-topic mastery climb in real time.
What's the most important distinction to remember for fiduciary duties?
The duty of loyalty is absolute (no-further-inquiry — fairness is irrelevant); the duty of prudence is process-based (evaluated portfolio-wide and at the time of decision, not by hindsight). Conflate them and you'll either let self-dealers off the hook for being "reasonable" or surcharge prudent trustees for losing trades.
Is there a memory aid for fiduciary duties questions?
Trustee duties = "LIPS-CAPE": Loyalty, Impartiality, Prudence, Segregate/earmark, Control, Account/inform, Productive, Enforce. For self-dealing remember: "No Further Inquiry — voidable even if fair."
What's a common trap on fiduciary duties questions?
Treating self-dealing as permissible if the price was fair (no further inquiry rule applies)
What's a common trap on fiduciary duties questions?
Confusing the prudent investor portfolio standard with asset-by-asset evaluation
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