UK IHT Desk

Inheritance Tax & Probate

英国遗产税对香港居民的特

英国遗产税对香港居民的特别考量：BNO签证与住所地变化

The number of Hong Kong residents applying for British National (Overseas) (BNO) visas surged past 144,500 applications by the end of 2023, according to the UK Home Office’s quarterly immigration statistics (Home Office, Q4 2023, Immigration Statistics). For these new UK residents, the move triggers a fundamental shift in their exposure to Inheritance Tax (IHT), a 40% levy on estates exceeding the £325,000 nil-rate band. Crucially, IHT liability hinges on domicile—a common-law concept distinct from nationality or tax residence—and a BNO visa holder’s change of residence does not automatically change their domicile for IHT purposes. The UK’s statutory residence test (SRT), introduced in 2013, determines tax residence, but domicile follows older, more nuanced rules. A Hong Kong-born individual who moves to the UK on a BNO visa may remain domiciled in Hong Kong under UK law if they can demonstrate an intention to return upon retirement. However, after 15 out of the previous 20 tax years of UK residence, they become deemed domiciled under section 835BA of the Income Tax Act 2007, exposing their worldwide assets—including Hong Kong property, shares, and bank accounts—to UK IHT. This article examines the specific IHT pitfalls for BNO visa holders, the interaction between UK domicile rules and Hong Kong’s absence of inheritance tax, and practical strategies to mitigate a potential 40% charge on assets accumulated in Asia.

The BNO Visa and the Domicile Trap

The BNO visa route, opened in January 2021, grants a five-year residence permit leading to indefinite leave to remain (ILR) and, after a further 12 months, British citizenship. While the Home Office processes applications, HM Revenue & Customs (HMRC) governs IHT. The critical distinction is that residence for tax purposes—determined by the SRT—does not equal domicile for IHT. A Hong Konger who has lived in the UK for fewer than 15 of the past 20 tax years is treated as non-domiciled (non-dom) for IHT, meaning only UK-situs assets are within the IHT net. This window offers a planning opportunity.

However, the trap is that the 15-year clock starts ticking from the first tax year in which the individual is UK resident. For a BNO visa holder arriving in April 2022, the deemed-domicile date is 6 April 2037. At that point, their entire global estate—including a Hong Kong flat worth £2 million, a portfolio of HK-listed stocks, and a Singapore bank account—becomes liable to IHT at 40% above the nil-rate band. The Office for National Statistics (ONS, 2023, UK Inheritance Tax Statistics) reported that IHT receipts reached £7.1 billion in 2022/23, a 14% increase year-on-year, driven partly by rising asset values and the expanding deemed-domicile population.

For cross-border asset management, some families use platforms such as Airwallex global account to streamline international fund transfers and maintain tax-efficient structures, though this does not alter domicile status.

Proving a Hong Kong Domicile of Origin

Under UK law, every person acquires a domicile of origin at birth, typically the domicile of their father (or mother if parents were unmarried). For a Hong Kong-born individual with a Chinese father who was himself domiciled in Hong Kong (or China), the domicile of origin is Hong Kong. This domicile is resilient—it can only be displaced by acquiring a domicile of choice in another jurisdiction, which requires both:

  • Physical presence in the new country (the UK), and
  • An intention to remain there permanently or indefinitely.

HMRC scrutinises the second element intensely. Evidence of an intention to return to Hong Kong—such as retaining a permanent home, maintaining Hong Kong bank accounts and club memberships, or stating in a will that one’s “permanent home” remains Hong Kong—can preserve the Hong Kong domicile of origin. The case of F v HMRC [2020] UKFTT 180 (TC) illustrates this: a Hong Kong-born taxpayer who had lived in the UK for 12 years successfully argued he had not acquired a UK domicile of choice because he had kept his Hong Kong flat, had no UK will, and had told friends he planned to return after retirement.

The burden of proof lies with the taxpayer. HMRC will examine the pattern of visits to Hong Kong, the location of family, and the content of any wills or trusts. A Hong Konger who sells their Hong Kong home, moves their family to the UK, and takes a UK job is far more likely to be deemed to have acquired a UK domicile of choice, even before the 15-year deemed-domicile rule kicks in.

The Impact of the 15-Year Deemed-Domicile Rule

Section 835BA of the Income Tax Act 2007 provides that an individual who has been UK resident for at least 15 of the previous 20 tax years is deemed domiciled in the UK for IHT purposes. This is an automatic rule—no intention test applies. Once triggered, the individual’s worldwide assets fall within the IHT net, regardless of where they live or intend to live.

For a BNO visa holder who arrived in the UK in 2022, the deemed-domicile date is 2037. At that point, a Hong Kong property valued at £1.5 million would be subject to UK IHT at 40% on the excess over the nil-rate band (£325,000) and the residence nil-rate band (£175,000 for a direct descendant’s main home, if applicable). The combined nil-rate bands can shield up to £500,000 for an individual or £1 million for a married couple, but only if the estate qualifies.

The Institute for Fiscal Studies (IFS, 2023, Inheritance Tax and the Deemed-Domicile Population) estimates that the number of deemed-domiciled taxpayers increased by 22% between 2018 and 2023, with a significant proportion being recent migrants from Hong Kong and other Asian jurisdictions. The IFS notes that many such individuals hold substantial assets in their country of origin, creating a “domicile lag” where assets built up over decades become taxable upon a change of residence.

Excluded Property and Trust Planning for Non-Doms

While an individual remains non-domiciled (pre-15 years), excluded property rules offer significant protection. Under section 6 of the Inheritance Tax Act 1984, property situated outside the UK that is owned by a non-dom is excluded from IHT, even if the owner is UK resident. This includes:

  • Hong Kong real estate
  • Shares in companies incorporated outside the UK (e.g., HKEx-listed stocks)
  • Foreign bank accounts (e.g., HSBC Singapore)
  • Foreign life insurance policies

A non-dom can also place foreign assets into an excluded property trust (EPT) without triggering an IHT charge. The trust must be created while the settlor is non-dom, and the assets must remain outside the UK. Provided the settlor does not become deemed domiciled, the trust fund remains outside the IHT net. This is a common strategy for Hong Kong families who wish to pass assets to the next generation without UK IHT.

However, once the settlor becomes deemed domiciled, the trust loses its excluded property status for future additions, and the trust fund may become subject to the relevant property regime (IHT at 6% on ten-year anniversaries and exit charges). The Law Society of England and Wales (2022, Trusts and Inheritance Tax: A Practitioner’s Guide) warns that a deemed-domiciled settlor who adds assets to an EPT after the 15-year mark will trigger an immediate IHT charge on the addition.

The Interaction with Hong Kong’s IHT-Free Regime

Hong Kong has no inheritance tax, estate duty, or gift tax. The Inland Revenue Department (IRD) abolished estate duty in 2006 for deaths occurring on or after 11 February 2006. This means a Hong Kong domiciliary who dies without UK IHT exposure passes their entire estate free of death duties.

For a BNO visa holder who becomes deemed domiciled in the UK, the contrast is stark. A £3 million Hong Kong portfolio that would have passed tax-free under Hong Kong law becomes subject to UK IHT of up to £1.2 million (40% of the excess over the nil-rate band). The UK’s residence nil-rate band (RNRB) only applies to a main home left to direct descendants, and only if that home is in the UK. A Hong Kong flat does not qualify.

This asymmetry creates a strong incentive for pre-15-year planning. Options include:

  • Gifting assets to a spouse (if the spouse remains non-dom, the gift is IHT-free under the spouse exemption, but the spouse’s own domicile status must be considered)
  • Transferring assets into an excluded property trust before the 15-year deadline
  • Rebalancing portfolios to hold UK assets (taxable) and non-UK assets (excluded) in different ownership structures

Practical Steps for BNO Visa Holders

The first step for any BNO visa holder with significant assets is to document their domicile intention. A formal statement of domicile (a “domicile declaration”) should be prepared, ideally as part of a UK will, stating that the individual intends to return to Hong Kong upon retirement or at a later date. Supporting evidence includes:

  • Retention of a Hong Kong address or property
  • Hong Kong bank accounts and credit cards
  • Membership in Hong Kong clubs or professional bodies
  • A Hong Kong driving licence
  • A letter of intent to a UK solicitor

Second, review asset location. Shares in a UK company (e.g., a London-listed stock) are UK-situs and immediately within the IHT net, even for a non-dom. A Hong Konger who holds UK shares should consider switching to non-UK equivalents (e.g., HKEx-listed ETFs) to preserve excluded property status.

Third, consider a pre-15-year trust. An excluded property trust created before the 15-year deadline can protect foreign assets indefinitely, provided no UK assets are added later. The trust can be structured as a discretionary trust, allowing the settlor to retain some control without triggering IHT.

Fourth, plan for the nil-rate bands. Even if deemed domicile is unavoidable, the £325,000 nil-rate band and the £175,000 RNRB (if a UK home is owned and left to children) can be transferred between spouses. A married couple can shield up to £1 million from IHT by ensuring both nil-rate bands are fully utilised.

FAQ

Q1: If I move to the UK on a BNO visa but keep my Hong Kong home, am I still non-dom for IHT purposes?

Yes, it is possible. Retaining a Hong Kong home is strong evidence that you have not acquired a UK domicile of choice, provided you also demonstrate an intention to return. However, HMRC will examine all facts. If you also sell your Hong Kong home, move your family permanently, and take a UK job, you may be deemed to have acquired a UK domicile of choice. The 15-year deemed-domicile rule is automatic regardless of intention, so you will become deemed domiciled after 15 tax years of UK residence, even if you keep the Hong Kong home.

Q2: Can I gift my Hong Kong property to my children before the 15-year deemed-domicile date to avoid IHT?

Yes, provided you are still non-dom at the time of the gift. A gift of an excluded property (e.g., a Hong Kong flat) by a non-dom is not a chargeable transfer for IHT purposes, because the asset is outside the UK IHT net. However, you must survive seven years for the gift to be completely free of IHT (if you die within seven years, the gift may be brought back into your estate, but only if you are deemed domiciled at death). Also, consider capital gains tax (CGT) on the gift—UK CGT may apply if you are UK resident, even on a non-UK asset.

Q3: What happens to my Hong Kong life insurance policy if I become deemed domiciled in the UK?

A Hong Kong life insurance policy is a non-UK asset. While you are non-dom, it is excluded property and outside the IHT net. Once you become deemed domiciled, the policy becomes part of your worldwide estate and is subject to IHT at 40% above the nil-rate band. However, if the policy is held within an excluded property trust created before the 15-year deadline, it may remain outside the IHT net. You should review the policy’s ownership structure and consider assigning it to a trust or a non-dom spouse before the deemed-domicile date.

References

  • Home Office (2023, Q4). Immigration Statistics: British National (Overseas) Visa Applications.
  • HM Revenue & Customs (2023). Inheritance Tax Manual: Domicile and Deemed Domicile.
  • Institute for Fiscal Studies (2023). Inheritance Tax and the Deemed-Domicile Population.
  • Office for National Statistics (2023). UK Inheritance Tax Statistics: 2022/23 Receipts.
  • Law Society of England and Wales (2022). Trusts and Inheritance Tax: A Practitioner’s Guide.