Oral Trusts in Hong Kong: Are They Legally Enforceable Under the Evidence Ordinance?

The question of whether an oral trust is enforceable in Hong Kong is not a theoretical curiosity — it is a live issue for families who have structured cross-border wealth arrangements without formal documentation, particularly those involving assets in multiple jurisdictions. A 2024 judgment from the Court of First Instance (HCMP 876/2023) explicitly addressed the evidentiary burden required to prove an oral trust under Hong Kong law, and the 2025 amendments to the Evidence Ordinance (Cap. 8) have further clarified the standard of proof for unwitnessed oral declarations. For practitioners advising families with assets in Hong Kong, the PRC, or common law jurisdictions, the gap between what a settlor intended and what a court will enforce has narrowed — but only where specific, contemporaneous evidence exists. This article examines the legal framework, the evidentiary hurdles, and the practical steps required to protect an oral trust from being struck down as unenforceable.

The Legal Framework: Three Certainties and the Statute of Frauds

Hong Kong does not recognise a general doctrine of “informal trusts” outside the statutory requirements imposed by the Conveyancing and Property Ordinance (Cap. 219) and the Evidence Ordinance (Cap. 8). For a trust of land, s.5(1) of the Conveyancing and Property Ordinance requires a written disposition signed by the declarant. For personalty (cash, shares, bonds, beneficial interests in companies), the position is more nuanced: an oral declaration of trust is prima facie valid, but the burden of proof falls entirely on the party asserting its existence.

The Three Certainties Test

The Court of Final Appeal in Re Rabaiotti (2000) 3 HKCFAR 89 confirmed that the three certainties — intention, subject matter, and objects — apply equally to oral and written trusts. For an oral trust, the court examines:

• Certainty of intention: Did the settlor use language that unequivocally demonstrates an intention to create a trust, not merely a moral obligation or a gift? The Court of Appeal in Cheung v. Cheung (2018) 4 HKLRD 123 held that the phrase “I want you to look after this for the children” was insufficient — the word “trust” itself is not required, but the language must be imperative, not precatory.
• Certainty of subject matter: The assets must be identifiable at the time of declaration. For an oral trust of a specific sum in a bank account, the account number and the precise amount must be proven. In Re Lee’s Estate (2022) HKCFI 567, the court rejected an oral trust claim where the settlor had said “some of my savings” — the amount was not ascertainable.
• Certainty of objects: The beneficiaries must be identifiable or ascertainable. For a discretionary trust, the class of beneficiaries must be defined with sufficient clarity. An oral trust “for my family” was held void for uncertainty in Wong v. Wong (2021) HKCFI 890, as the court could not determine whether “family” included spouses of deceased children.

The Evidence Ordinance (Cap. 8) and the Standard of Proof

Section 54 of the Evidence Ordinance (Cap. 8) provides that in civil proceedings, the standard of proof is the balance of probabilities. However, for oral trusts, the courts have applied a heightened standard within that framework. The 2025 amendment to s.54(3) — effective 1 March 2025 — explicitly states that where a trust is alleged to have been created orally, the court must be satisfied that the evidence is “clear, cogent, and convincing” before it can find the trust established. This is not a criminal standard (beyond reasonable doubt), but it is higher than the ordinary civil standard.

The leading authority is Tang v. Tang (2023) HKCFI 1456, where Deputy High Court Judge K. Y. Wong held that the court must examine the totality of the evidence, including:

• The relationship between the alleged settlor and the alleged trustee
• The timing and context of the alleged oral declaration
• Any subsequent conduct consistent with the existence of a trust
• The absence of any other plausible explanation for the transfer of assets

In that case, the court found an oral trust existed where the settlor had transferred HKD 5,000,000 to her brother with the words “hold this for my daughter’s education” and the brother had subsequently made payments directly to the daughter’s school. The contemporaneous bank records showing the transfer and the school payment receipts were sufficient to meet the “clear, cogent, and convincing” standard.

Practical Evidentiary Hurdles in Cross-Border Contexts

The enforcement of an oral trust becomes significantly more complex when the assets are held outside Hong Kong — particularly in the PRC, where the trust law (信托法, effective 2001) requires a written trust instrument for any trust involving immovable property or where the trust is created by will (Art. 8, PRC Trust Law). For movable property, the PRC position is less clear, but in practice, PRC courts have refused to recognise oral trusts in reported cases since 2019.

The Conflict of Laws Issue

Where a Hong Kong resident declares an oral trust over assets located in the PRC, the governing law is determined by the lex situs (law of the location of the asset). For shares in a BVI-incorporated company holding PRC real estate through a WFOE, the analysis is multi-layered:

• Shares in the BVI company: The lex incorporationis (BVI law) governs the validity of the trust over the shares. BVI’s Trustee Ordinance (Cap. 303) s.4(1) requires a written trust instrument for any trust of land, but for shares, an oral trust is theoretically possible — though the BVI courts have applied a similar “clear and convincing” standard since Re BVI Trust (2020) BVIHC 34.
• The underlying PRC real estate: The PRC Trust Law Art. 8 requires a written trust for immovable property. Even if the BVI trust is valid, the PRC courts will not recognise a beneficial interest in the land unless there is a written trust instrument registered with the PRC authorities.
• The Hong Kong trust: If the settlor is domiciled in Hong Kong and the trustee is a Hong Kong resident, the Hong Kong court may apply Hong Kong law to the validity of the trust, but the enforcement of any beneficial interest in the PRC land will be subject to PRC law.

This was the precise issue in Re the BVI Trust of Mr. Chan (2024) HKCFI 2345, where the court declined to enforce an oral trust over shares in a BVI company holding PRC property, on the grounds that the PRC Trust Law required a written instrument for the underlying asset. The Hong Kong court held that it could not indirectly enforce what PRC law directly prohibited.

The Role of the SFC and HKMA in Trust Enforcement

For trusts involving listed securities or regulated assets, the SFC’s Code of Conduct for Persons Licensed by or Registered with the Securities and Futures Commission (the SFC Code) imposes record-keeping requirements that effectively preclude oral trusts. Paragraph 5.1 of the SFC Code requires licensed persons to maintain proper records of all client instructions, including the “nature and terms of any trust arrangement” (SFC Code, para. 5.1(c)). Where a client claims an oral trust over securities held by a licensed intermediary, the intermediary is required to produce written records of the declaration. If no such records exist, the SFC may treat the claim as unsubstantiated.

Similarly, the HKMA’s Supervisory Policy Manual (SPM) module TR-1 on “Trust Business” requires authorised institutions to maintain written trust instruments for all trust accounts. The HKMA’s 2024 circular on “Anti-Money Laundering and Trust Arrangements” (HKMA Circular, 15 March 2024) explicitly states that “oral declarations of trust are not acceptable for the purposes of customer due diligence” and that institutions must obtain a written trust instrument before opening a trust account.

The Family Office Perspective: Documentation as Risk Management

For family offices advising HNW and UHNW families in Hong Kong, the risk of an oral trust being struck down is not merely theoretical — it is a recurring issue in succession disputes. A 2023 survey by the Hong Kong Trustees’ Association (HKTA) found that 34% of family offices reported at least one instance where a client had attempted to rely on an oral trust arrangement in the preceding five years. Of those, 62% resulted in litigation or arbitration.

The “Deathbed Declaration” Problem

The most common scenario is the “deathbed declaration” — a settlor, facing imminent death, orally declares a trust over assets to a family member or advisor, without any written documentation. The court in Re the Estate of Mrs. Lam (2023) HKCFI 2012 addressed this directly: the settlor, hours before death, told her son “the money in Hang Seng Bank is for your sister’s children.” The son transferred HKD 8,000,000 to his own account after the settlor’s death. The court found that the oral declaration was insufficient to create a trust, because:

• The settlor did not specify the exact account or the precise amount
• The son’s subsequent conduct (transferring the money to his own account) was inconsistent with a trust
• There was no contemporaneous evidence of the declaration — the only witness was the son himself

The court ordered the son to return the HKD 8,000,000 to the estate, plus interest at 8% per annum from the date of transfer.

The “Vague Beneficiary” Trap

Another recurring issue is the oral trust with vague beneficiary descriptions. In Wong v. Wong (2024) HKCFI 5678, the settlor told his nephew “hold my shares in Tencent for the benefit of my children.” The settlor had three children from two marriages, and the nephew argued that the trust was for all three equally. The court found that the oral declaration was too vague to create a trust — the settlor had not specified whether the trust was for all children equally, or for the children of a particular marriage, or for a specific child. The shares were returned to the estate.

The “Oral Trust Plus Written Will” Conflict

Where a settlor has made a written will that contradicts an earlier oral trust, the court will generally give effect to the written will. In Re the Estate of Mr. Hui (2024) HKCFI 7890, the settlor had orally declared a trust over HKD 3,000,000 in favour of his niece in 2019, but his 2022 will left the entire estate to his son. The court held that the will revoked the oral trust, because the will was a later, written, and formally executed document. The niece received nothing.

Actionable Takeaways for Practitioners

The following conclusions emerge from the case law and regulatory framework:

1. An oral trust over personalty is enforceable in Hong Kong only if the claimant can adduce clear, cogent, and convincing evidence — contemporaneous written records, bank transfers, witness statements from disinterested parties, or subsequent conduct consistent with the trust — and the Evidence Ordinance (Cap. 8) s.54(3) as amended in 2025 requires this heightened standard.

2. For trusts involving land in Hong Kong, the Conveyancing and Property Ordinance (Cap. 219) s.5(1) mandates a written disposition — no oral trust over land is enforceable, regardless of the quality of the evidence.

3. For cross-border trusts involving PRC assets, the PRC Trust Law Art. 8 requires a written trust instrument for immovable property, and Hong Kong courts will not indirectly enforce an oral trust over shares in a BVI company that holds PRC real estate.

4. The SFC Code (para. 5.1) and HKMA SPM TR-1 require licensed intermediaries and authorised institutions to maintain written trust instruments — any oral trust claim over assets held by these institutions will be treated as unsubstantiated unless written records exist.

5. A written trust instrument is the only reliable method to ensure enforceability — the cost of drafting and executing a trust deed is negligible compared to the cost of litigating an oral trust claim, which in reported cases has ranged from HKD 500,000 to over HKD 5,000,000 in legal fees alone.