Where asset protection for a principal with the United Kingdom exposure stands now

The United Kingdom's tax and succession regime has shifted materially over the past several years. For a principal whose wealth spans Hong Kong, an offshore holding structure and assets or residence in the United Kingdom, the window in which a planned restructuring remains straightforward is narrowing. The question is not whether to act – it is what the current cross-border interface actually demands, and whether the structures in place were built for the environment that now exists.

Asset protection for a principal with United Kingdom exposure requires a coordinated read across at least three legal systems: the Trustee Ordinance (Cap. 29) as the Hong Kong trust instrument, the United Kingdom's domestic succession and tax regime, and the law of the offshore holding centre – most commonly the British Virgin Islands or the Cayman Islands. The interaction of those three systems, not any single instrument in isolation, determines where the exposure sits. Since the Trustee Ordinance was substantially reformed with effect from 1 December 2013, Hong Kong trusts have offered stronger protection against forced-heirship and foreign claims than many principals and their advisers realise.

This analysis sets out, in order, what is commercially at stake, how the cross-border interface operates, where the comparative reading favours one structure over another, and where the risk now sits for principals who have not reviewed their position recently.

What is actually at stake: the commercial question behind the legal one

The starting point is not a legal instrument – it is the principal's balance sheet. A typical profile on our desk involves a principal who built or consolidated wealth through Hong Kong operating companies or Greater China trade, holds one or more offshore vehicles above those operating entities, maintains residential or investment property in the United Kingdom, and may have acquired – intentionally or by accumulation – a connection to the United Kingdom that now triggers either deemed domicile, long-term residence, or both.

The commercial stakes divide into three categories. First, inheritance tax exposure on United Kingdom-situated assets and, increasingly, on worldwide assets where the principal is deemed domiciled under United Kingdom rules. Second, the effectiveness of the offshore or Hong Kong trust structure as a shield against forced-heirship claims from family members in a civil-law jurisdiction – most often a Mainland Chinese, CIS or continental European family member. Third, the succession route for Hong Kong operating assets and any listed or unlisted holdings above the United Kingdom-situated property.

Each of those categories is manageable. None of them is straightforward once the facts are in play. The problem our desk consistently encounters is that structures designed in one regulatory environment are maintained into a different one without a re-read. A BVI holding company with a share charge in favour of a lender, sitting above both United Kingdom and Hong Kong assets, does not occupy the same position it did when it was established. The analysis has moved.

How does the United Kingdom exposure actually create the cross-border problem?

United Kingdom exposure, for a non-domiciled principal, has historically meant a question of remittances and the use of foreign income or gains in the United Kingdom. The deemed-domicile rules changed that calculation. Under the long-residence limb of deemed domicile, a principal resident in the United Kingdom for a sufficient number of years becomes treated as domiciled there for inheritance-tax purposes – with the consequence that worldwide assets, not merely United Kingdom-situated ones, fall within the United Kingdom inheritance tax charge.

That is the connection point at which the Hong Kong and offshore structure becomes directly relevant. A Hong Kong discretionary trust governed by the Trustee Ordinance and settled before the principal acquired United Kingdom deemed domicile can, in the right circumstances, shelter the settled assets from the worldwide inheritance tax charge. The key word is "before." The moment at which the structure is put in place relative to the domicile clock is the single most consequential variable in this analysis.

The second cross-border problem is succession. United Kingdom succession law applies to movable property in accordance with the law of the deceased's domicile. For real property, the law of the situs governs. A principal who dies domiciled – or deemed domiciled – in the United Kingdom will have his worldwide movable estate administered under United Kingdom succession rules, regardless of where the assets are held or how the offshore structure is framed.

What does that mean in practice? A Hong Kong trust that was validly constituted and is genuinely discretionary – meaning the principal has not retained rights that amount to a beneficial interest – should in principle sit outside the estate. But a structure where the principal retained too many reserved powers, or where the discretionary nature has been undermined by a letter of wishes that reads more like a direction, is more vulnerable than many families appreciate. The 2013 Trustee Ordinance reform strengthened the statutory protection for settlor reserved powers in Hong Kong trusts, but the scope of the reservation matters. Reserved powers that go too far re-characterise the structure under the law of the forum examining the estate.

The governing instruments and how they interact across the two systems

Three instruments are in play simultaneously, and the analytical error is to read them sequentially rather than concurrently.

The Trustee Ordinance (Cap. 29), reformed with effect from 1 December 2013, sets the Hong Kong position. The 2013 reform abolished the rule against perpetuities and the rule against excessive accumulations for Hong Kong trusts, meaning a properly constituted Hong Kong trust can endure without the timeframe constraints that complicate older structures. The reform also introduced a statutory firewall against foreign forced-heirship claims, providing that a Hong Kong trust is not invalidated by the application of foreign law that would otherwise entitle a person to a forced share of the settlor's estate. That firewall operates as a mandatory rule of Hong Kong law.

The United Kingdom's inheritance tax regime applies through its own domestic legislation. The deemed-domicile and long-residence tests under that regime operate independently of the Hong Kong or offshore trust structure. Whether a particular trust arrangement constitutes a qualifying excluded property trust (a structure holding non-United Kingdom assets for a non-United Kingdom domiciliary, which may attract excluded property treatment for inheritance tax) is a question of United Kingdom domestic law applied to the facts of that trust. Changes to the treatment of such trusts have been a feature of United Kingdom policy discussions in recent years, and principals who established structures under an earlier set of assumptions should verify that the current position still applies to them.

The BVI or Cayman offshore layer adds a third body of law. The BVI Business Companies Act and the Cayman Islands Companies Act govern the holding vehicle. Economic-substance requirements now apply in both jurisdictions to certain entity categories. A holding company that was inserted primarily to manage United Kingdom inheritance tax exposure may carry substance obligations that the structure was not originally designed to satisfy. That is a compliance question that runs alongside the protection question.

The interaction of these three instruments is where the work sits. Hong Kong trust law can protect settled assets from the United Kingdom charge if the structure is correctly constituted and the settled property is not treated as part of the estate under United Kingdom principles. The offshore vehicle can be an efficient intermediary between the Hong Kong trust and the underlying assets. But the sequencing – which instrument is relied upon for which function – must be deliberate.

The comparative read: Hong Kong trust versus alternative structures

Why the Hong Kong structure? Principals with United Kingdom exposure sometimes ask whether a Cayman, BVI or Jersey trust would serve the same purpose. The choice of trust jurisdiction matters at three points: the firewall protection against forced-heirship; the treatment of the trust under the law of the jurisdiction examining the estate; and the practical ability to govern the trust in a stable common-law environment with access to a functioning court system.

Hong Kong offers a specific combination that the major offshore trust centres also provide – but with one distinction that matters for a Greater China-connected family. The courts of Hong Kong operate under the common law, with English as an official language of the court, with a final appellate court of high standing, and with a geographic and practical proximity to the assets and the family that a Caribbean jurisdiction cannot replicate. For a principal whose operating companies are in Hong Kong or Mainland China, the governing trustee and the trust instrument being in the same legal environment as the major assets is a structural advantage, not merely a sentimental one.

That said, Hong Kong is not always the preferable trust situs. Where a principal's assets are primarily European or where the family is connected to a civil-law jurisdiction whose courts have shown a disposition to look through offshore structures, a Jersey or Guernsey trust may offer stronger recognition in the relevant European forum. The choice is a comparative one, not an absolute. What matters is that it is made deliberately, with the specific forced-heirship and estate-planning risks mapped against the jurisdictions actually in play.

For a principal with United Kingdom exposure specifically, the relevant comparison is between: (a) a Hong Kong discretionary trust holding offshore-incorporated vehicles, which in turn hold United Kingdom and other assets; (b) a Jersey or Guernsey trust in the same structural position; and (c) a direct holding without a trust layer, relying instead on a will and, possibly, a Hong Kong or United Kingdom-law enduring power of attorney.

Option (c) is usually the baseline, not the solution. A will alone does not protect against inheritance tax on a worldwide basis. It does not address forced-heirship claims from civil-law family members. It does not provide for incapacity. And it does not provide the structural flexibility a discretionary trust offers in managing distributions across a family over time.

What foreign advisers – and principals themselves – get wrong

We regularly see structures built on a mis-read of three points.

The first is treating the "excluded property" concept in United Kingdom inheritance tax as permanent, once established. It is not. The treatment depends on the ongoing domicile position of the settlor and the nature of the assets settled. Structural changes – including changes in the composition of trust assets, changes in residence, or amendments to the trust – can disturb the analysis. A structure that correctly achieved excluded property treatment when created may not maintain that treatment without attention.

The second is underestimating the reserved-powers risk. The 2013 Trustee Ordinance reform provides statutory protection for certain reserved powers in Hong Kong trusts, and that is a genuine protection. But the scope of the powers matters. Powers that, in substance, amount to the settlor retaining a beneficial interest in the trust assets will be scrutinised by the United Kingdom courts if those courts are examining the estate. The Hong Kong firewall protects against foreign forced-heirship claims from within the Hong Kong legal order. It does not prevent a United Kingdom court from applying United Kingdom principles to determine whether the trust assets fall within the taxable estate.

The third is failing to address the interaction between the trust structure and any corporate layer. A Hong Kong or offshore company sitting between the trust and a United Kingdom property may have its own United Kingdom tax profile – particularly following changes to the treatment of closely held companies holding residential property. The structure must be read as a whole, not layer by layer.

A concrete example helps. A principal from a CIS jurisdiction established a Hong Kong trust in the early period after the 2013 reform, settled assets through a BVI holding company, and maintained United Kingdom residential property through that vehicle. The structure was reviewed at the time and was sound. By the time the family came to us in autumn 2026, several years of United Kingdom residence had altered the deemed-domicile position, and changes in the treatment of enveloped properties had changed the cost-benefit analysis of the corporate layer. We re-modelled the structure, identified the residual excluded property position, and mapped the steps needed to preserve it. The window remained open – but only because the review happened before the counted years ran out.

Where the risk sits now: the analytical view from this desk

The United Kingdom has signalled, across successive fiscal and policy cycles, an intention to narrow the benefits available to non-domiciled and long-resident individuals. The direction of travel is clear, even if individual measures are subject to revision. For a principal with United Kingdom exposure, the relevant question is not whether the current rules will remain exactly as they stand – it is which structural features are robust against changes to the rules.

From our desk's read, three positions carry the most durable protection.

First, a Hong Kong discretionary trust settled before the principal acquired United Kingdom deemed domicile, with clean reserved-powers drafting, assets that are not United Kingdom-situated property, and a trustee with genuine independent discretion. The earlier the settlement and the cleaner the governance, the stronger the position against both inheritance tax and forced-heirship challenges. This is not a time-sensitive structure in the sense that the window closes on a fixed date – it is sensitive to the accumulation of years of United Kingdom residence.

Second, clear estate-planning documentation for United Kingdom-situated assets held directly, including a United Kingdom will covering United Kingdom movable and immovable property, and separate Hong Kong documentation covering Hong Kong-situated assets. The interaction of domicile, situs and governing-law rules means a single will is rarely optimal across a multi-jurisdictional estate.

Third, periodic substance review of any offshore holding vehicle. Economic-substance requirements in the BVI and Cayman Islands have shifted the compliance burden for holding companies. A vehicle that fails its substance test does not lose its structural position automatically, but it creates a compliance exposure that may feed into a broader challenge to the structure's effectiveness.

What is at risk for a principal who does nothing? The window for settling assets into a Hong Kong trust before deemed domicile is acquired closes progressively with each year of United Kingdom residence. Once deemed domicile is established, a settlement into trust of worldwide assets does not produce the same inheritance-tax result as a pre-deemed-domicile settlement. That timing constraint is, in our view, the most concrete risk for principals who are currently resident in the United Kingdom and have not yet acted.

The enforcement and recognition angle

Protection structures are only effective if they are recognised by the courts that matter. For a principal with United Kingdom exposure, the critical forum is the United Kingdom court that will, in the event of death or dispute, examine the estate and determine what falls within or outside it. The Hong Kong trust structure must be able to withstand scrutiny in that forum.

The United Kingdom recognises foreign trusts under its own conflict-of-laws rules, taking into account the proper law of the trust and the circumstances of the settlement. A Hong Kong discretionary trust, properly constituted under the Trustee Ordinance, with genuine discretionary governance and clean documentation, will generally be recognised by the United Kingdom courts as an effective trust. The question is whether the specific facts – the reserved powers, the composition of the assets, the domicile position at settlement – satisfy the conditions for that recognition to produce the intended tax and succession outcome.

There is also the Mainland–Hong Kong dimension. For a principal with assets in Mainland China or operating companies routed through Hong Kong, the Mainland Judgments in Civil and Commercial Matters (Reciprocal Enforcement) Ordinance (Cap. 645), which came into force on 29 January 2024, changes the enforcement dynamic for civil and commercial disputes between the Mainland and Hong Kong. Succession and matrimonial matters are explicitly excluded from that regime. But asset-protection structures that interact with Mainland assets through Hong Kong vehicles benefit from a more settled enforcement environment for the commercial claims – loan facilities, intercompany receivables, trade obligations – that frequently sit alongside the family-wealth structure.

For advice on the United Kingdom succession position and the interaction with Hong Kong and offshore structures, our colleagues who act on these matters across the two jurisdictions operate in close coordination with locally licensed advisers in the relevant forums. The analysis is ours; the execution runs through admitted counsel in each jurisdiction where local law is engaged.

The objection: is a trust not just a device that is easily challenged?

Some principals – and some of their existing advisers – arrive with the view that trust structures are susceptible to challenge and that the effort of establishing and maintaining one is not justified by the protection it provides. That view is understandable as a reaction to structures that were poorly designed. It is not an accurate description of a well-constituted Hong Kong discretionary trust.

The 2013 reform of the Trustee Ordinance addressed precisely this concern. The statutory firewall against forced-heirship claims operates as a mandatory rule of Hong Kong law – not a contractual provision that can be argued around, but a rule that the Hong Kong courts will apply regardless of the foreign law that a claimant seeks to invoke. The abolition of the rule against perpetuities means the trust does not carry an inherent expiry date that requires reconstruction. The statutory treatment of reserved powers provides clarity on what a settlor can retain without undermining the trust's effectiveness.

A trust is not a magic shield. It is a legal structure that works when it is correctly constituted and correctly maintained. The challenges that succeed against trust structures are almost invariably challenges against structures where the settlor retained too much, where the documentation was inconsistent with the purported governance, or where the structure was erected after the risk had already crystallised. A trust established at the right moment, with the right drafting and the right ongoing governance, is well-tested under Hong Kong law and is recognised by the United Kingdom courts as an effective trust – with the attendant tax and succession consequences that flow from that recognition.

The decision map: situation, instrument, route, timing, and residual risk

The analysis above points to a decision map that varies by the principal's current position.

Situation A – principal not yet United Kingdom resident, with a planned move: the full range of options is available. A Hong Kong discretionary trust settled before departure, combined with United Kingdom pre-residence planning, produces the most durable structural position. The timing constraint is the date of departure and the start of the residence clock. Route: Hong Kong trust settlement, offshore holding vehicle with substance review, separate United Kingdom will for United Kingdom-situated property. Residual risk: future changes to the excluded property treatment of the trust assets under United Kingdom law.

Situation B – principal currently United Kingdom resident, below the deemed-domicile threshold: a partial window remains. A Hong Kong trust settlement now, before deemed domicile is acquired, can still achieve the excluded property treatment for non-United Kingdom assets. Route: immediate review of the domicile clock, trust settlement with clean reserved-powers drafting, offshore holding structure with substance compliance. Timing: the number of years remaining before deemed domicile is acquired is the critical variable. Residual risk: the deemed-domicile threshold is a product of United Kingdom legislation and can be amended.

Situation C – principal who has already acquired United Kingdom deemed domicile: the window for the pre-domicile trust settlement has closed. The analysis shifts to what can still be achieved within the current structure – management of United Kingdom-situated assets, separation of non-United Kingdom asset exposure through existing or new structures, and a clear succession plan for the Hong Kong and offshore assets. Route: review of existing structure; United Kingdom will; Hong Kong enduring power of attorney for Hong Kong assets; review of offshore substance compliance. Residual risk: the worldwide estate exposure remains unless and until deemed domicile is lost (which requires a period outside the United Kingdom).

Situation D – principal with a forced-heirship claim already in view, from a civil-law family member: the Hong Kong trust firewall under the Trustee Ordinance is the primary instrument. A trust already in place before the claim arose is better positioned than one established after. Route: review of existing trust documentation; assessment of the reserved-powers position; engagement with locally licensed Hong Kong counsel on trust governance. Residual risk: if the trust was constituted after the claim was foreseeable, the firewall protection requires more careful analysis.

The common thread across all four situations is that the quality of the outcome depends on the timing of the review relative to the event that creates the exposure. The principals who achieve the best structural positions are those who act before the clock runs out – not those who act most quickly after it does.

The sequence above describes the standard position across these four scenarios. Your matter turns on the documents, the domicile clock, the specific jurisdictions engaged, and the order in which the steps are taken – which is where the route is won or lost.

For a structured assessment of your asset-protection position across the United Kingdom and Hong Kong, including a read on the trust and offshore structures currently in place, write to us at info@lockhartyip.com.

For principals who have already attempted a restructuring that did not produce the intended result – an existing trust that was improperly reserved, a corporate layer with unexpected United Kingdom tax consequences, or a will that fails to address the multi-jurisdictional estate – a second read can identify the strategic error and the routes still open.

To discuss how the current cross-border position between the United Kingdom and Hong Kong applies to your situation, contact info@lockhartyip.com.

Further analysis of the succession dimension for Hong Kong-connected estates is available in our related publication on wills and estate plans covering assets in the United Kingdom. For principals with CIS connections, our guide on succession planning across Hong Kong and the CIS addresses the forced-heirship interface in detail. Our full private wealth practice covers the broader range of structures available to international principals.

Related practices

• Holding Structures – offshore and Hong Kong vehicles for cross-border asset holding
• Tax Positions – FSIE, treaty analysis and cross-border residence planning
• Disputes & Arbitration – enforcement and trust-dispute resolution across Hong Kong and the Mainland

Speak with Lockhart & Yip

For a scoped view of your matter, contact info@lockhartyip.com. Discuss your matter →

Related

• Private Wealth
• Will Estate Plan Covering Assets United Kingdom Uk 2
• Succession Planning Across Hong Kong Cis Cis Guide

This publication is general information and does not constitute legal advice. For advice on your situation, contact info@lockhartyip.com.