Setting Up a Transitional Trust for Expatriates Working in Hong Kong

The 2025-2026 tax year marks a pivotal inflection point for expatriate professionals in Hong Kong, driven by the Hong Kong Inland Revenue Department (IRD) intensifying its scrutiny of domicile and residency claims under Section 8(1) of the Inland Revenue Ordinance (IRO, Cap. 112). Concurrently, the global push for tax transparency, spearheaded by the OECD’s Common Reporting Standard (CRS) automatic exchange of information, has made the traditional “offshore” structuring of assets for a temporary Hong Kong assignment increasingly untenable. A transitional trust—a bespoke vehicle designed to bridge the gap between an expatriate’s pre-existing foreign domicile and their new Hong Kong tax residence—has emerged as a critical, non-discretionary tool for asset protection and succession planning. Without such a structure, an expatriate risks having their entire global estate deemed Hong Kong-situs for estate duty purposes (a risk that, while the estate duty was abolished in 2006, still impacts inheritance tax in other jurisdictions) or, more pressingly, their foreign assets becoming subject to Hong Kong profits tax on deemed trading receipts. This article provides a technical framework for establishing such a trust, grounded in the specific provisions of the IRO, the Trustee Ordinance (Cap. 29), and the practical mechanics of the Hong Kong Monetary Authority (HKMA) regulatory environment for private wealth.

The Domicile and Tax Residence Framework for Hong Kong Expatriates

The foundational question for any expatriate considering a transitional trust is the interplay between their domicile of origin, their domicile of choice, and their Hong Kong tax residence. The IRD’s practice, as codified in its Departmental Interpretation and Practice Notes (DIPN), does not formally recognise a statutory definition of “domicile” for tax purposes outside of estate duty—which was abolished for deaths on or after 11 February 2006. However, for the purposes of determining the taxability of foreign-sourced income under the territorial source principle of Hong Kong, an individual’s residence status is paramount.

The Territorial Source Principle and Foreign-Sourced Income

Hong Kong taxes only income “arising in or derived from” Hong Kong (IRO, Section 14(1)). An expatriate’s salary for work performed in Hong Kong is clearly chargeable. However, income from a foreign trust, dividends from a BVI company, or rental income from a UK property is not automatically Hong Kong-sourced. The critical distinction lies in whether the expatriate has taken up permanent residence in Hong Kong, thereby potentially making Hong Kong the “source” of their worldwide income for the purposes of a foreign tax credit claim in their home jurisdiction. The IRD’s DIPN No. 21 (Revised 2020) provides the framework, but it does not address the transitional trust specifically. The key is that the trust must be structured so that the settlor’s continued connection to their home jurisdiction (e.g., maintaining a permanent home, family, or business interests there) prevents Hong Kong from becoming their sole “centre of vital interests” under the OECD Model Tax Convention, which Hong Kong applies through its comprehensive double taxation agreements (CDTAs).

The Domicile of Choice vs. Domicile of Origin

A Hong Kong expatriate who has lived in the territory for 10+ years and has no intention of returning to their home country may have acquired a domicile of choice in Hong Kong. This is a common law concept, not a statutory one, but it has profound implications for trust law. Under the Trustee Ordinance (Cap. 29, Section 2), a trust is governed by the law of its proper law—which is usually the law of the jurisdiction with which the trust has its closest and most real connection. If an expatriate has acquired a Hong Kong domicile of choice, the transitional trust’s proper law should not be Hong Kong law if the goal is to ring-fence foreign assets from a future Hong Kong estate duty or inheritance tax in another jurisdiction. Instead, the trust should be established under the law of a common law jurisdiction with a robust trust regime, such as the Cayman Islands or the British Virgin Islands (BVI), with the situs of the trust assets remaining outside Hong Kong.

Structuring the Transitional Trust: Jurisdiction and Asset Situs

The core structural challenge is to create a trust that is tax-transparent in the expatriate’s home jurisdiction (to avoid a double layer of taxation on foreign income) but is not considered a Hong Kong resident trust for the purposes of the Hong Kong-source income rule. This requires a deliberate choice of jurisdiction for the trust’s administration and the situs of its assets.

The BVI VISTA Trust as a Preferred Vehicle

The BVI Virgin Islands Special Trusts Act (VISTA) trust is a highly suitable instrument for the expatriate who wishes to retain control over the underlying business assets (e.g., shares in a family operating company) while achieving asset protection and succession planning. Unlike a standard discretionary trust, a VISTA trust permits the settlor to retain significant control over the underlying company’s management without the trustees being required to interfere in the company’s affairs. This is critical for an expatriate who is the founder of a private company that continues to generate income outside Hong Kong. The trust’s proper law is BVI law, and the situs of the trust assets (the company shares) is the BVI register. As long as the trust’s administration (e.g., trustee meetings, record-keeping) is conducted outside Hong Kong, the trust income should not be Hong Kong-sourced.

The Role of the Hong Kong Trustee and the HKMA

While the trust’s proper law should be offshore, the practical administration of the trust for a Hong Kong-based expatriate often requires a Hong Kong-licensed trustee to act as a co-trustee or as the protector. The HKMA’s supervisory framework for trust companies (under the Anti-Money Laundering and Counter-Terrorist Financing Ordinance, Cap. 615) requires all trust companies in Hong Kong to be licensed. A Hong Kong-licensed trustee can provide the necessary local presence for the expatriate’s banking and investment needs, but the trust deed must explicitly state that the situs of administration is the offshore jurisdiction. For example, the trust deed should specify that all trustee decisions are made by the offshore trustee (e.g., a BVI trust company) and that the Hong Kong trustee’s role is limited to custodial and administrative functions, not discretionary management. This is a technical point that the IRD will scrutinise under the “substance over form” doctrine.

Tax Implications and the IRD’s Stance on Trusts

The IRD does not issue blanket rulings on trusts, but its practice is clear: the tax treatment of a trust depends on the source of its income, the residence of its trustees, and the beneficial ownership of its assets. For an expatriate, the key risk is that the trust is deemed to be a “Hong Kong resident trust” for the purposes of a double taxation agreement (DTA) claim, or that the trust’s income is re-characterised as the settlor’s personal income under the “settlor-interested trust” rules.

The Settlor-Interested Trust Problem

Under the IRO, a trust is “settlor-interested” if the settlor (or their spouse) retains a beneficial interest in the trust property or has the power to revoke the trust (Section 2, Interpretation of “settlor-interested trust”). For a transitional trust, the expatriate settlor often wants to retain the right to income from the trust during their Hong Kong assignment. This is a settlor-interested trust. The consequence is that the trust’s income is deemed to be the settlor’s income for Hong Kong tax purposes. If the trust holds a BVI company that pays dividends, those dividends are not Hong Kong-sourced (the source is the BVI company’s profits). However, if the trust holds Hong Kong real estate or a Hong Kong business, the rental or trading income is Hong Kong-sourced and will be taxed in the hands of the settlor. The solution is to ensure that the trust’s only assets are foreign-situs and that the settlor’s interest is limited to a right to capital, not income, during the assignment period. This is a standard drafting technique using a “power of appointment” rather than a “right to income.”

The CRS Reporting Obligation

The OECD’s CRS requires financial institutions in Hong Kong to report the financial accounts of tax residents of other jurisdictions to the IRD, which then exchanges the information with the account holder’s home tax authority. For an expatriate with a transitional trust, the trust itself is a “Controlling Person” for CRS purposes. If the trust is administered in Hong Kong, the trust’s bank account will be reported to the IRD as belonging to a BVI trust with a Hong Kong resident settlor. The home jurisdiction’s tax authority will then see the trust’s assets. This creates a transparency risk. The solution is to ensure the trust’s bank account is held outside Hong Kong (e.g., in Singapore or the BVI) and that the trust’s reporting jurisdiction is the BVI, not Hong Kong. The expatriate must also ensure that their personal Hong Kong tax return (BIR60) does not need to disclose the trust’s assets if they are not “beneficially entitled” to the trust property—a point of frequent IRD audit.

Practical Implementation: The Trust Deed and the Letter of Wishes

The operational success of a transitional trust hinges on the precision of its governing documents, specifically the trust deed and the accompanying letter of wishes. These documents must be drafted to survive the expatriate’s eventual departure from Hong Kong.

The Trust Deed: Key Clauses for Expatriates

The trust deed must contain a “reservation of powers” clause that explicitly limits the Hong Kong trustee’s discretion. The deed should state that the trust’s proper law is the law of the BVI (or Cayman), that the forum for any disputes is the BVI courts, and that the trust’s situs is the BVI. The deed should also include a “floating choice of law” clause that allows the trust to change its proper law in the event the expatriate moves to a new jurisdiction. For example, if the expatriate is reassigned to Singapore, the trust’s proper law could switch to Singapore law to align with the new tax residence. This is a sophisticated drafting technique that requires a specialist offshore trust lawyer.

The Letter of Wishes: Guiding the Trustee Without Binding Them

The letter of wishes is a non-binding document that provides guidance to the trustees on how to exercise their discretionary powers. For an expatriate, the letter should explicitly state that the settlor’s intention is for the trust to be a transitional vehicle, not a permanent Hong Kong trust. It should instruct the trustees to distribute capital to the settlor’s family members (who are likely non-Hong Kong residents) and to avoid making distributions to the settlor during their Hong Kong assignment. The letter should also state that the settlor does not intend to make Hong Kong their permanent home, which supports the argument against a domicile of choice. This letter is critical for any IRD audit, as it demonstrates the settlor’s intent to maintain a foreign connection.

Actionable Takeaways

1. Select an offshore proper law — the BVI VISTA trust or Cayman STAR trust is the preferred vehicle, ensuring the trust is not a Hong Kong resident trust under the IRO and avoiding the settlor-interested trust problem for foreign-situs assets.
2. Segregate the situs of administration — ensure the trust’s bank accounts and trustee meetings are conducted outside Hong Kong, even if a Hong Kong-licensed trustee is used as a co-trustee for local banking convenience.
3. Draft the trust deed with a floating choice of law clause — this allows the trust to migrate its proper law to a new jurisdiction if the expatriate is reassigned, preventing a future tax residency dispute.
4. Limit the settlor’s interest to capital, not income — the settlor should retain a power of appointment over capital, not a right to income, to avoid the trust’s income being deemed the settlor’s personal Hong Kong-source income.
5. Maintain a robust paper trail — the letter of wishes and all correspondence with the trustee must clearly document the expatriate’s intention to maintain a foreign domicile and the trust’s transitional purpose, which is the first line of defence in an IRD audit.