The Duty of Impartiality: How a Trustee Must Balance Competing Beneficiary Classes

The collapse of a single-family office in Singapore in late 2024, where the trustee allocated 92% of a USD 180 million distribution to the income beneficiary while leaving the remainder trust’s capital base eroded by inflation, has placed the duty of impartiality under unprecedented scrutiny across Asian trust jurisdictions. Hong Kong’s Trust Law Reform (Cap. 29) amendments, effective 1 December 2023, codified the statutory duty of a trustee to act impartially between beneficiaries for the first time, moving beyond common law precedent established in Nestle v National Westminster Bank plc (1993) and Re Pauling’s Settlement Trusts (1964). The Hong Kong Monetary Authority’s (HKMA) 2025 supervisory circular on family offices (ref: C24/2025) explicitly flagged impartiality as a key risk area for licensed trust companies managing multi-generational structures. With an estimated HKD 2.3 trillion in private wealth held in Hong Kong trust structures as of year-end 2024 (HKMA Private Wealth Management Report, 2025), the margin for error in balancing competing beneficiary classes—income versus capital, current versus contingent, resident versus non-resident—has never been narrower. The SFC’s 2025 enforcement priorities (Code of Conduct for Licensed Corporations, para 16.3) now treat systematic breaches of impartiality as a “serious compliance failure” warranting licence conditions or suspension.

The Legal Foundation: Statutory Codification and Common Law Precedent

Section 3A of the Trustee Ordinance (Cap. 29) and the Duty to Act Impartially

The Trustee (Amendment) Ordinance 2023 introduced Section 3A, which explicitly states that a trustee “must act impartially as between different beneficiaries, having regard to the nature of the trust, the terms of the trust instrument, and the circumstances of the case.” This statutory codification closed a gap in Hong Kong’s trust law framework, where prior reliance on English common law had created uncertainty for trustees operating under local regulatory regimes. The Hong Kong Court of Final Appeal in HSBC International Trustee Ltd v Tam (2024) HKCFA 42 confirmed that Section 3A applies retrospectively to trusts created before December 2023, provided the trust instrument does not expressly exclude the duty.

The practical implication is immediate: a trustee managing a discretionary trust with a life tenant (income beneficiary) and remaindermen (capital beneficiaries) must now document a formal balancing process for every material distribution decision. The Tam ruling established that a trustee’s failure to consider the capital beneficiaries’ interests when making a HKD 15 million distribution to the life tenant constituted a breach, even though the trust deed gave the trustee absolute discretion over income allocation. The court ordered the trustee to restore HKD 8.2 million to the capital fund, calculated as the present value of the lost capital growth over the six-year period from 2018 to 2024.

The English Precedent: Nestle and the Prudent Investor Standard

The seminal English case Nestle v National Westminster Bank plc (1993) established the “prudent investor” standard for impartiality. The Court of Appeal held that a trustee must “take a balanced view” between income and capital beneficiaries, and that a failure to rebalance a portfolio for 16 years—even in a falling interest rate environment—did not automatically constitute a breach if the trustee had a rational investment strategy. The court quantified the test: a trustee must act as “an ordinary prudent man of business” would in managing his own affairs, but with the additional duty to consider the interests of all beneficiaries.

Hong Kong courts have adopted this standard with one critical modification. In Re The Trust of Chan Kwok Wah (2022) HKCFI 1834, the Court of First Instance held that the “ordinary prudent man” test must be applied in the context of Hong Kong’s higher inflation environment (averaging 3.2% from 2018 to 2022 versus 2.1% in the UK over the same period, Census and Statistics Department data). The court found that a trustee who maintained a 70% fixed-income allocation for 10 years without adjusting for inflation had breached its duty of impartiality, even though the trust instrument did not require capital preservation. The trustee was ordered to pay HKD 4.7 million in equitable compensation to the remaindermen.

Practical Mechanics: Balancing Competing Classes in Multi-Jurisdictional Structures

Income versus Capital: The Total Return Approach

The most common conflict in Hong Kong trust structures involves the tension between income beneficiaries (typically the settlor’s spouse or children receiving distributions for living expenses) and capital beneficiaries (remaindermen who will inherit the trust corpus). The traditional approach—allocating all realised income to the income beneficiary and retaining capital gains for the remaindermen—has been rendered obsolete by modern portfolio theory. The HKMA’s 2025 circular on family office governance (ref: C24/2025, para 7.3) explicitly recommends a “total return” approach, where the trustee considers the trust’s overall investment return (income plus capital appreciation) when determining distributions.

A Hong Kong trustee managing a USD 50 million trust with a 4% annual distribution to the income beneficiary must now document the following: (a) the trust’s actual total return for the period (e.g., 6.2% in 2024, comprising 2.8% income yield and 3.4% capital appreciation); (b) whether the distribution exceeds the income component, thereby eroding capital; and (c) the inflation-adjusted capital position after the distribution. The SFC’s 2024 thematic inspection of 15 licensed trust companies found that 11 failed to maintain this documentation, leading to regulatory warnings and, in two cases, licence conditions requiring quarterly impartiality reporting (SFC Enforcement Report 2024, para 18.2).

Current versus Contingent Beneficiaries: The Vested Interest Problem

A more complex balancing act arises when a trust has both current beneficiaries (those with a vested interest, such as a life tenant) and contingent beneficiaries (those whose interest depends on a future event, such as surviving the life tenant). The Hong Kong Court of Appeal in Re The Trust of Li Ka-shing (2023) HKCA 287 held that a trustee must give “substantial but not equal weight” to contingent interests, particularly where the trust instrument provides for discretionary distributions to a class that includes as-yet-unborn grandchildren.

The court quantified the balancing test: the trustee must estimate the probability of the contingent event occurring (e.g., the life tenant surviving 10 years) and adjust the investment strategy accordingly. In the Li case, the trustee had maintained a 90% equity allocation based on the assumption that the life tenant (aged 82) would not survive more than five years, thereby favouring the contingent remaindermen. The court found this breached the duty of impartiality because the trustee had not considered the life tenant’s improved health outcomes (she survived eight years post-diagnosis) and ordered a rebalancing to 60% equities, 30% bonds, and 10% cash. The trustee was required to pay HKD 12.3 million in equitable compensation to the life tenant’s estate for lost income.

Resident versus Non-Resident Beneficiaries: Tax and Exchange Control Implications

Hong Kong trust structures frequently involve beneficiaries resident in multiple jurisdictions—Hong Kong, Mainland China, Singapore, the UK, and the US. The duty of impartiality requires the trustee to consider the tax and exchange control consequences of distributions on each beneficiary class, without favouring one jurisdiction over another. The Inland Revenue Department’s (IRD) 2024 practice note on trust distributions (DIPN 61) confirms that a trustee may take tax implications into account when exercising discretion, provided the trust instrument does not prohibit it.

A practical example: a Hong Kong trustee managing a trust with a UK-resident income beneficiary (subject to 45% income tax on distributions) and a Hong Kong-resident capital beneficiary (subject to 0% capital gains tax) must decide whether to make a distribution from income (taxable in the UK) or capital (not taxable in Hong Kong but potentially subject to UK inheritance tax). The trustee’s decision to allocate 100% of a HKD 10 million distribution from capital to avoid UK income tax was challenged by the capital beneficiary, who argued that the trustee had favoured the UK beneficiary at the capital beneficiary’s expense. The Hong Kong High Court in Re The Trust of Wong Siu-ling (2024) HKCFI 421 held that the trustee had breached its duty of impartiality by failing to document the tax analysis and by not considering the capital beneficiary’s objection. The court ordered the trustee to reimburse the capital fund HKD 2.3 million, representing the capital appreciation lost due to the premature distribution.

Investment Strategy and Asset Allocation: The Impartiality Lens

The Prudent Investor Rule and Portfolio Construction

Section 4 of the Trustee Ordinance (Cap. 29) imposes a duty on trustees to invest trust funds “as if they were a prudent investor,” having regard to the “need for diversification” and the “risk of loss.” When applied through the impartiality lens, this requires the trustee to construct a portfolio that balances the income needs of current beneficiaries against the capital preservation needs of remaindermen. The HKMA’s 2025 circular on family office governance (ref: C24/2025, para 8.1) recommends that trustees adopt an Investment Policy Statement (IPS) that explicitly addresses the impartiality duty, including:

• Target total return (e.g., 5-7% per annum)
• Income yield target (e.g., 2-3% per annum)
• Capital preservation floor (e.g., inflation-adjusted corpus must not decline by more than 5% over any five-year period)
• Rebalancing triggers (e.g., when income yield falls below 1.5% or capital appreciation exceeds 10% in a single year)

The SFC’s 2024 thematic inspection found that only 4 of the 15 licensed trust companies reviewed had an IPS that explicitly referenced the impartiality duty. The remaining 11 were required to amend their IPS within six months or face licence conditions (SFC Enforcement Report 2024, para 19.1).

The Inflation Problem: Eroding Capital in Low-Yield Environments

Hong Kong’s average inflation rate of 2.8% from 2020 to 2024 (Census and Statistics Department, Consumer Price Index data) has created a structural challenge for trustees balancing income and capital interests. A trust with a 3% distribution to the income beneficiary and a 2.8% inflation rate leaves only 0.2% real return for capital preservation. In a rising interest rate environment (HKMA Base Rate increased from 0.75% in March 2022 to 5.75% in July 2023), the trustee must decide whether to lock in higher yields on fixed-income instruments (favouring the income beneficiary) or maintain equity exposure for capital appreciation (favouring the remaindermen).

The Nestle standard requires the trustee to document a rational basis for this decision. In Re The Trust of Hui Ka-yan (2025) HKCFI 89, the court found that a trustee who maintained a 100% fixed-income allocation for eight years (2017-2025) had breached its duty of impartiality because it had not considered the impact of inflation on the capital corpus. The trustee argued that the fixed-income allocation was intended to protect the income beneficiary’s distributions, but the court held that the trustee had a duty to the remaindermen to preserve the real value of the capital. The trustee was ordered to pay HKD 6.8 million in equitable compensation, calculated as the difference between the actual capital value and the inflation-adjusted value over the eight-year period.

Illiquid Assets: Private Equity, Real Estate, and Family Businesses

Hong Kong trust structures frequently hold illiquid assets—private company shares, real estate, and family businesses—that create unique impartiality challenges. The trustee must decide whether to hold, sell, or distribute these assets, balancing the income needs of current beneficiaries (who may require cash distributions) against the capital preservation needs of remaindermen (who benefit from long-term appreciation).

The Hong Kong Court of Final Appeal in Re The Trust of Cheng Yu-tung (2023) HKCFA 18 addressed this issue in the context of a family trust holding a 40% stake in a privately held property development company. The trustee had refused to sell the stake despite a HKD 2.8 billion offer from a third-party buyer, arguing that the stake was a “core family asset” that should be preserved for future generations. The income beneficiary (the settlor’s widow) challenged this decision, arguing that the trustee had favoured the remaindermen at her expense. The court held that the trustee had breached its duty of impartiality by failing to consider the income beneficiary’s need for liquidity, and ordered the trustee to sell 15% of the stake (valued at HKD 420 million) and distribute the proceeds to the income beneficiary.

The court established a three-part test for illiquid assets: (a) the trustee must obtain a professional valuation of the asset at least annually; (b) the trustee must consider whether a partial sale or distribution in specie would better balance the competing interests; and (c) the trustee must document the rationale for any decision to retain an illiquid asset that constitutes more than 30% of the trust’s total assets.

Regulatory Enforcement and Liability

The SFC’s 2025 Enforcement Priorities

The SFC’s 2025 enforcement priorities (Code of Conduct for Licensed Corporations, para 16.3) explicitly identify “systematic breaches of the duty of impartiality” as a “serious compliance failure” warranting licence conditions or suspension. The SFC’s 2024 enforcement report recorded three enforcement actions against licensed trust companies for impartiality breaches, resulting in total fines of HKD 4.2 million and two licence conditions requiring quarterly impartiality reporting to the SFC (SFC Enforcement Report 2024, para 20.1).

The SFC’s 2025 thematic inspection programme will focus on: (a) whether trust companies have documented impartiality policies; (b) whether investment decisions are made with reference to the impartiality duty; and (c) whether distribution decisions are supported by written analysis of the impact on each beneficiary class. The SFC has indicated that it will treat a failure to maintain this documentation as a “prima facie breach” of the duty of impartiality, shifting the burden of proof to the trustee to demonstrate compliance.

Equitable Compensation and Personal Liability

A trustee who breaches the duty of impartiality is personally liable for equitable compensation, calculated as the loss suffered by the affected beneficiary class. The Hong Kong courts have adopted the English approach from Target Holdings Ltd v Redferns (1996), which held that equitable compensation is not limited to the actual loss suffered but may include the “lost opportunity” to invest the funds differently.

In Re The Trust of Leung Ka-fai (2025) HKCFI 156, the court awarded HKD 9.4 million in equitable compensation to the capital beneficiaries after the trustee had distributed HKD 15 million to the income beneficiary without considering the impact on the capital corpus. The court calculated the compensation as the difference between the actual capital value (HKD 85.6 million) and the value the capital would have achieved if the trustee had invested the distributed amount in a balanced portfolio (HKD 95.0 million), based on the trust’s historical investment return of 6.5% per annum.

The court also ordered the trustee to pay the legal costs of both the income and capital beneficiaries, totalling HKD 1.2 million, on an indemnity basis. The trustee’s professional indemnity insurance did not cover the claim, as the policy excluded losses arising from “deliberate breaches of fiduciary duty.”

Actionable Takeaways

1. Trustees must adopt a written Investment Policy Statement that explicitly addresses the duty of impartiality, including target total return, income yield, and capital preservation floors, and must review and update the IPS at least annually to reflect changes in market conditions and beneficiary circumstances.
2. Every material distribution decision—whether from income, capital, or a combination—must be supported by a written analysis that quantifies the impact on each beneficiary class, including the inflation-adjusted capital position after the distribution, and must be retained for at least seven years for regulatory inspection.
3. For trusts holding illiquid assets exceeding 30% of total assets, trustees must obtain professional valuations at least annually and document the rationale for any decision to retain, sell, or distribute the asset, with specific reference to the balancing of competing beneficiary interests.
4. Trustees must review the tax and exchange control implications of distributions for beneficiaries resident in different jurisdictions, document the analysis, and ensure that no beneficiary class is systematically favoured over another on the basis of tax efficiency alone.
5. Trustees should consider adopting a “total return” approach to portfolio construction and distribution policy, where the trust’s overall investment return (income plus capital appreciation) is used as the benchmark for determining distributions, rather than relying solely on realised income.