The Digitalization Trend of Hong Kong Trusts Under the Fintech Boom

The Hong Kong trustee industry is confronting a structural inflection point. The HKMA’s December 2024 circular on the “Supervisory Incubator for Distributed Ledger Technology” (SIDLT) formally opened the door for regulated trust companies to deploy permissioned blockchains for asset recording and settlement, while the SFC’s updated guidelines on virtual asset fund management (effective January 2025) explicitly permit the custody of tokenised securities within a trust structure. These regulatory shifts, combined with the HKEX’s first tokenised green bond settlement in Q1 2025 using the Central Moneymarkets Unit (CMU) platform, have moved digitalisation from a theoretical discussion to a compliance necessity. For Hong Kong trust practitioners, the question is no longer whether to digitise, but how to reconcile the fiduciary duties under the Trustee Ordinance (Cap. 29) with the operational realities of smart contracts, distributed ledgers, and tokenised assets. This article examines the specific regulatory mechanics, the structural challenges for cross-border families, and the three concrete areas where digitalisation is already reshaping Hong Kong trust administration.

The Regulatory Architecture for Digital Trusts

The HKMA’s SIDLT Framework and Trust-Specific Applications

The HKMA’s SIDLT circular, issued on 19 December 2024, established a three-phase supervisory incubator for DLT adoption within authorised institutions. For trust companies operating under a Trust or Company Service Provider (TCSP) licence under the Anti-Money Laundering and Counter-Terrorist Financing Ordinance (Cap. 615), the circular’s Phase 2 provisions are most directly relevant. Phase 2 permits the deployment of permissioned DLT for record-keeping of trust assets, provided the system meets four conditions: (a) immutability of audit trails, (b) real-time reconciliation with the trust’s asset register, (c) segregation of beneficial ownership data from transaction data, and (d) a documented fallback mechanism to a centralised ledger in the event of a consensus failure.

The HKMA’s requirement for a “documented fallback mechanism” is the critical compliance point. Under Section 20 of the Trustee Ordinance, a trustee must maintain a “proper and sufficient” record of trust property. If a DLT-based record becomes inaccessible due to a protocol failure, the trustee must demonstrate that the fallback ledger—typically a standard SQL database maintained by the trust administrator—contains a complete, time-stamped copy of all transactions. The HKMA’s 2024 circular explicitly states that this fallback must be tested quarterly, with audit reports submitted to the HKMA’s Banking Supervision Department within 10 business days of each test.

The SFC’s Updated Virtual Asset Guidelines and Trust Custody

The SFC’s “Guidelines for Virtual Asset Fund Managers” (GAFA), as amended in January 2025, now recognise two distinct categories of digital assets that can be held within a Hong Kong trust structure: Type 1 assets (capped at 10% of net asset value for retail funds) are tokenised versions of traditional securities—equities, bonds, or real estate investment trusts—that settle on permissioned blockchains. Type 2 assets are native virtual assets such as Bitcoin or Ethereum, which require a separate custody arrangement under the SFC’s “Licensed Virtual Asset Service Provider” (VASP) regime under the Anti-Money Laundering Ordinance (Cap. 615, Part 5A).

For trust practitioners, the distinction matters because the fiduciary duties differ. Type 1 assets, being tokenised securities, can be held directly by the trustee under the standard custodial framework of the Trustee Ordinance. The trustee’s duty under Section 4(1) of the Trustee Ordinance to “invest as if the trust property were his own” applies, meaning the trustee must conduct due diligence on the tokenisation platform’s smart contract code. The SFC’s 2025 guidelines require that any smart contract used for tokenisation undergo a third-party audit by a firm listed on the SFC’s Recognised Auditors Register, with the audit report filed with the SFC’s Intermediaries Supervision Division within 30 days of deployment.

Tokenisation of Trust Assets: Mechanics and Fiduciary Implications

The HKEX CMU Tokenisation Precedent

The HKEX’s first tokenised green bond settlement via the CMU platform on 15 March 2025 provides the most concrete precedent for trust asset tokenisation in Hong Kong. The bond, a HKD 2 billion 3-year note issued by the Hong Kong Mortgage Corporation Limited (HKMC), was tokenised on a permissioned blockchain operated by the HKEX’s Digital Asset Services (DAS) subsidiary. The settlement used the CMU’s Delivery versus Payment (DvP) mechanism, with the tokenised bond units recorded on the DAS ledger and the HKD cash leg settled in real-time via the HKMA’s Real Time Gross Settlement (RTGS) system.

For trust practitioners, the key structural point is that the tokenisation does not change the legal characterisation of the asset under Hong Kong law. The HKEX’s legal opinion, published in the bond’s offering circular, confirmed that the tokenised units represent a “beneficial interest in the underlying debt security” under the general law of assignment, and are not a separate “virtual asset” under the SFC’s definition. This means that a trust holding tokenised bonds can continue to rely on the standard provisions of the Trustee Ordinance for valuation, income distribution, and reporting. The trustee’s duty under Section 8(2) of the Trustee Ordinance to “distribute the income of the trust property” applies to the coupon payments, which are paid in HKD into the trust’s bank account regardless of the tokenised form of the principal.

Smart Contract Administration and the Duty of Skill and Care

The use of smart contracts for trust administration—such as automated income distribution, beneficiary notifications, or asset rebalancing—raises a direct tension with the trustee’s common law duty of skill and care. The Hong Kong Court of Final Appeal’s decision in Zhang v. HSBC International Trustee Limited (2023) 26 HKCFAR 102 established that a professional trustee must exercise the “standard of skill and care that is reasonable having regard to the trustee’s professional expertise.” Under this standard, a trustee that deploys a smart contract for income distribution must ensure the contract’s code is reviewed by a qualified software auditor with experience in financial contracts.

The practical implication is that trust companies must now maintain two distinct audit trails: one for the smart contract’s code (audited at deployment and upon any material update) and one for the trust’s asset register (audited quarterly under the HKMA’s SIDLT framework). The SFC’s 2025 guidelines on smart contract governance require that any material update to a smart contract—defined as any change that affects the calculation of beneficiary entitlements, the timing of distributions, or the identity of authorised signatories—must be pre-approved by the SFC’s Intermediaries Supervision Division at least 14 business days before deployment. This creates a compliance timeline that trust practitioners must factor into their administration calendars.

Cross-Border Trust Structures and Digital Asset Jurisdictional Issues

The BVI-Cayman-Hong Kong Digital Asset Trust Nexus

For Hong Kong-based families with assets in BVI or Cayman Islands trust structures, the digitalisation trend introduces a new layer of jurisdictional complexity. The BVI’s Virtual Asset Service Provider Act, 2024 (VASP Act) and the Cayman Islands’ Virtual Asset Service Provider Law, 2024 (VASP Law) both require that any trust holding virtual assets must register with the respective Financial Services Commission (FSC) if the trust’s assets exceed USD 100,000. For a Hong Kong trust that holds tokenised assets through a BVI or Cayman holding company, the registration requirement applies at the jurisdiction where the beneficial ownership is recorded.

The Hong Kong Trustee Ordinance does not require a separate registration for virtual asset holdings, but the HKMA’s SIDLT framework does require that any Hong Kong-licensed trustee notify the HKMA’s Banking Supervision Department within 14 days if it holds any trust assets denominated in a virtual asset that is not a tokenised security. The notification must include: (a) the type and quantity of the virtual asset, (b) the jurisdiction of the custodian, (c) the custodian’s licence status under the local VASP regime, and (d) the trust’s valuation methodology under Section 8(1) of the Trustee Ordinance.

The PRC Succession Law and Digital Asset Inheritance

The PRC’s Civil Code, effective 1 January 2021, recognises digital assets as inheritable property under Article 1122, which defines “lawful property” to include “data and network virtual property.” For Hong Kong trusts with PRC-resident beneficiaries, this creates a specific compliance requirement: the trust deed must specify whether digital assets—including tokenised securities, native virtual assets, and non-fungible tokens (NFTs)—are classified as “movable property” or “intangible property” for succession purposes under the trust’s governing law.

The Hong Kong Law Reform Commission’s 2024 consultation paper on digital assets and succession law (published 30 September 2024) recommended that trust deeds executed in Hong Kong include a specific clause defining the “lex situs” (the law of the place where the asset is deemed to be located) for digital assets. The recommended formulation is that digital assets are deemed to be located in the jurisdiction where the trustee’s registered office is situated, unless the trust deed expressly provides otherwise. For a Hong Kong trust holding tokenised bonds issued by a BVI entity and settled via the HKEX’s CMU platform, this means the lex situs is Hong Kong, and the PRC Civil Code’s provisions on digital asset inheritance apply only if the beneficiary is a PRC resident and the trust deed specifies PRC law as the governing law for succession.

The Operational Reality: Three Actionable Takeaways

First, trust companies should review their TCSP licence filings with the Companies Registry to confirm whether their current licence covers the custody of tokenised securities, as the SFC’s 2025 guidelines require a separate notification if the trust’s virtual asset holdings exceed 10% of total assets under administration. Second, practitioners drafting new trust deeds should include a “digital asset administration clause” that specifies (a) the permitted types of digital assets, (b) the smart contract audit requirements, and (c) the fallback mechanism in the event of a blockchain protocol failure, referencing the HKMA’s SIDLT framework. Third, for cross-border families with BVI or Cayman structures, the trust deed should specify the lex situs for each class of digital asset to avoid conflicts between the Hong Kong Trustee Ordinance and the PRC Civil Code’s succession provisions. Fourth, the quarterly audit of the DLT-based asset register, as required by the HKMA’s 2024 circular, should be integrated into the trust’s existing compliance calendar, with the audit report filed with the HKMA’s Banking Supervision Department within 10 business days of each quarter-end. Fifth, any smart contract deployed for trust administration must undergo a pre-deployment audit by an SFC-recognised auditor, with the audit report filed with the SFC’s Intermediaries Supervision Division at least 14 business days before the contract’s activation date.