UK IHT Considerations for Hong Kong Residents: BNO Visa and Changes in Domicile Status

Since the launch of the British National (Overseas) (BNO) visa route in January 2021, over 140,000 Hong Kong residents and their dependants had applied for UK settlement by the end of 2023, according to the UK Home Office’s quarterly immigration statistics. This migration wave has created a significant intersection between UK inheritance tax (IHT) planning and the complex rules of domicile. For a Hong Kong resident who moves to the UK under the BNO scheme, the shift from a non-UK domicile to a deemed UK domicile—which can occur after just 15 years of residence under current tax law—can trigger an IHT liability on their worldwide estate, including assets held in Hong Kong. HM Revenue & Customs (HMRC) reported that IHT receipts reached £7.5 billion in the 2023/24 tax year, a 10% increase from the previous year, underscoring the financial weight of these rules. This article examines how the BNO visa pathway interacts with UK domicile law, the practical triggers for IHT exposure, and the planning steps that Hong Kong residents should consider before and after relocation.

The BNO Visa and UK Tax Residence: The First Trigger

For IHT purposes, the UK tax residence status determined under the Statutory Residence Test (SRT) is the initial gateway. A Hong Kong resident who spends 183 days or more in the UK in a tax year is automatically UK resident. The BNO visa, which grants a 30-month or 5-year route to settlement, typically requires the holder to be physically present in the UK for the majority of that period.

Once UK resident, the clock begins ticking toward deemed domicile. Under Section 267 of the Inheritance Tax Act 1984, an individual is treated as domiciled in the UK for IHT purposes if they have been resident in the UK for at least 15 of the previous 20 tax years. This is a strict, objective test—unlike the common law concept of domicile of choice, it does not require an intention to remain permanently. For a BNO visa holder arriving in 2024, deemed domicile will crystallise on 6 April 2039, assuming continuous residence.

The 15-Year Count: What Counts as Residence?

The SRT counts a tax year as “resident” if the individual meets the sufficient ties test or the 183-day rule. For BNO holders who split their time between Hong Kong and the UK, careful diary-keeping is essential. HMRC guidance (2023) confirms that even years with fewer than 90 days in the UK can count if the individual has sufficient UK ties (e.g., family, accommodation, work). A Hong Kong resident who commutes weekly to London for work may inadvertently accelerate the 15-year count.

Domicile of Origin vs. Domicile of Choice: The Hong Kong Dimension

The common law concept of domicile of origin is the default for every individual at birth. For a person born in Hong Kong to parents who were themselves domiciled in Hong Kong, the domicile of origin is likely Hong Kong. However, under English law, a person can acquire a domicile of choice by moving to a new country with the intention to settle there permanently or indefinitely.

The BNO visa complicates this. The visa is explicitly designed as a pathway to indefinite leave to remain (ILR) and ultimately British citizenship. Applying for ILR (typically after 5 years) is strong evidence of an intention to remain permanently—a key factor HMRC examines when assessing a domicile of choice. In the case of Fowkes v. Duthy (2022, First-tier Tribunal), the tribunal held that mere residence under a temporary visa did not establish a domicile of choice, but applying for settlement did.

The “Intention” Factor for Hong Kong Families

For a Hong Kong resident who retains a flat in Hong Kong, maintains HK bank accounts, and returns frequently, the argument for retaining a Hong Kong domicile of choice may be stronger. However, if they purchase a UK home, register their children in UK schools, and join UK professional bodies, HMRC may argue that the intention to remain is clear. The burden of proof lies with the taxpayer to show they have not abandoned their Hong Kong domicile.

IHT Exposure on Worldwide Assets: The Deemed Domicile Trap

Once deemed domicile is established, the IHT charge applies to the individual’s worldwide estate, not just UK-situated assets. This is the single most significant change for Hong Kong residents. For a non-domiciled individual, IHT is only chargeable on UK-situated assets (e.g., UK property, UK bank accounts, UK shares). After deemed domicile, assets held in Hong Kong—including Hong Kong property, Hong Kong stocks, and Hong Kong bank accounts—fall within the IHT net.

The current IHT threshold (nil rate band) is £325,000 per individual, with an additional £175,000 residence nil rate band for a main home passed to direct descendants. Any value above these bands is taxed at 40%. For a Hong Kong resident with a Hong Kong property valued at £1 million and a UK property valued at £500,000, the total estate of £1.5 million would exceed the nil rate bands by £1 million, triggering an IHT bill of £400,000.

Hong Kong Property: A Particularly Difficult Asset

Hong Kong property is illiquid and subject to its own probate rules. If a UK-domiciled individual dies owning a Hong Kong flat, the UK IHT must be paid within six months of death (or the end of the month of death, whichever is later) to avoid interest charges. However, the Hong Kong probate process can take 6–12 months, creating a cash-flow problem for the heirs. Some families use a Hong Kong holding company structure to convert the property into shares, which may be easier to value and transfer, though this requires careful planning to avoid HMRC anti-avoidance rules.

Excluded Property Trusts: A Pre-Arrival Planning Tool

One of the most effective structures for Hong Kong residents moving to the UK is the excluded property trust (EPT). Under Section 48(3) of the Inheritance Tax Act 1984, assets settled into a trust by a non-UK domiciled settlor are excluded from the settlor’s estate for IHT purposes, provided the trust assets are not UK-situated. This exclusion continues even after the settlor becomes deemed domiciled, as long as the trust was created before the deemed domicile date.

For a Hong Kong resident who creates a trust in Hong Kong (or another non-UK jurisdiction) before moving to the UK, and who funds it with non-UK assets (e.g., Hong Kong property, cash in a Hong Kong bank account, Hong Kong-listed shares), those assets remain outside the UK IHT net indefinitely. The trust can distribute income to the settlor or their family without triggering an IHT charge on the capital.

Timing Is Critical

The trust must be settled before the individual becomes UK resident for IHT purposes. In practice, this means before the start of the 15th year of UK residence. For a BNO visa holder who arrives in 2024, the deadline is 5 April 2039. However, the trust must also be created while the settlor is still non-UK domiciled under common law. Since the BNO visa holder may have already formed a domicile of choice by applying for ILR, the safest window is the period immediately before UK arrival, while the individual is still resident and domiciled in Hong Kong.

The Residence Nil Rate Band and Downsizing: UK Property Planning

For Hong Kong families who purchase a UK home, the residence nil rate band (RNRB) offers an additional IHT allowance of £175,000 per individual (2024/25 tax year), provided the home is passed to direct descendants (children or grandchildren). This means a married couple can shelter up to £1 million from IHT (£325,000 each + £175,000 each), provided the estate qualifies.

However, the RNRB is subject to a taper: for estates valued over £2 million, the RNRB is reduced by £1 for every £2 over the threshold. For a Hong Kong resident who also holds significant Hong Kong assets, the combined worldwide estate may easily exceed £2 million, eliminating the RNRB entirely. Additionally, the RNRB only applies to the main home—not to investment properties or Hong Kong property.

Downsizing Provisions

If a Hong Kong resident sells their UK home before death and does not purchase a replacement, the RNRB may still be available if the sale proceeds are passed to direct descendants. This is particularly relevant for families who downsize in later life. HMRC’s guidance (2024) confirms that the downsizing relief can be claimed even if the home was sold years before death, provided the estate meets the qualifying conditions.

Gifting and the Seven-Year Rule: Practical Strategies

A common IHT planning technique is lifetime gifting. Under current rules, gifts made more than seven years before death are exempt from IHT. For a Hong Kong resident who is not yet deemed domiciled, gifts of non-UK assets (e.g., Hong Kong property, Hong Kong cash) are not subject to UK IHT at all, even if the donor dies within seven years. This creates a powerful window for wealth transfer.

For example, a Hong Kong resident aged 60 who moves to the UK in 2024 could gift their Hong Kong flat to their children in 2025. Since the donor is still non-UK domiciled at the time of the gift, and the asset is non-UK situated, the gift falls outside the UK IHT regime. Even if the donor dies within seven years, no UK IHT is payable on the gift. However, if the donor becomes deemed domiciled before making the gift, the rules change, and the gift may be subject to the seven-year rule.

The “Gift with Reservation of Benefit” Trap

If the donor continues to live in the gifted Hong Kong property rent-free, or retains any benefit from it, HMRC may treat the gift as a gift with reservation of benefit (GROB), meaning the property remains in the donor’s estate for IHT purposes. This is a common pitfall for Hong Kong families who gift a flat to their children but continue to use it during visits. Clear documentation and market-rate rent are essential to avoid GROB.

Double Taxation Relief: Hong Kong and UK IHT

The UK and Hong Kong do not have a formal double taxation agreement (DTA) specifically for inheritance tax. However, the UK provides unilateral double taxation relief under Section 159 of the Inheritance Tax Act 1984. If a Hong Kong resident dies and the same asset is subject to both UK IHT and Hong Kong estate duty (which was abolished in 2006 for deaths after 11 February 2006), relief may be limited.

In practice, Hong Kong estate duty has been abolished for most deaths, so the primary concern is the interaction with Hong Kong stamp duty and capital gains tax on asset transfers. For Hong Kong property held through a company, the transfer of shares may trigger Hong Kong stamp duty (0.2% of the higher of consideration or market value), which is not creditable against UK IHT. Families should model the total tax cost of an asset transfer before death.

The Role of the Hong Kong Probate Registry

For deaths involving Hong Kong assets, the executor must apply for a grant of representation in Hong Kong (probate or letters of administration) alongside the UK grant. The Hong Kong probate process requires a certified copy of the UK grant, plus a sworn affidavit. This dual-process can take 3–6 months, during which interest on unpaid UK IHT accrues at 2.75% per annum (HMRC rate, 2024). A pre-arranged liquidity plan—such as a life insurance policy held in trust—can cover the IHT bill while Hong Kong probate is pending.

FAQ

Q1: I am a Hong Kong resident with a BNO visa. I have lived in the UK for 14 years. If I return to Hong Kong for one year, does the 15-year clock reset?

No, the 15-year clock does not reset by leaving the UK for one year. Under the deemed domicile rules, the test looks at the previous 20 tax years. If you were resident for 14 of those 20 years, you are still one year short of the 15-year threshold. However, if you leave the UK for a full tax year and are non-resident under the SRT, that year will not count toward the 15-year total, effectively delaying the deemed domicile date by one year. For example, if you leave the UK on 5 April 2038 and return on 6 April 2040, you would have two non-resident years, pushing the deemed domicile date to 6 April 2041.

Q2: My Hong Kong property is worth £2 million. If I become deemed domiciled, will I pay 40% IHT on the full value?

Yes, if your total worldwide estate exceeds the nil rate bands. For a single person, the first £325,000 is tax-free (plus up to £175,000 RNRB if the UK home qualifies). The remaining £1.5 million of your Hong Kong property, plus any other assets, would be taxed at 40%, resulting in a £600,000 IHT bill. However, if you are married and your spouse is also a UK resident, you can use the spouse exemption to transfer assets between you tax-free, and both nil rate bands can be combined. A properly structured excluded property trust created before deemed domicile could remove the Hong Kong property from your estate entirely.

Q3: I am a Hong Kong resident who has never lived in the UK. I own a UK buy-to-let property. Will my heirs pay UK IHT?

Yes, because UK-situated assets are always subject to UK IHT, regardless of your domicile. The current IHT threshold is £325,000, and the property value above that is taxed at 40%. For example, if the property is worth £500,000 and you have no other assets, the IHT bill would be £70,000 (40% of £175,000). If you are non-UK domiciled, only the UK property is taxable, not your Hong Kong assets. However, if you later move to the UK under a BNO visa and become deemed domiciled, your worldwide estate would become taxable. Planning options include holding the property through a non-UK company, though this has its own tax implications.

References

UK Home Office. (2023). Quarterly Immigration Statistics: BNO Visa Applications and Grants.
HM Revenue & Customs. (2024). Inheritance Tax Statistics: 2023/24 Receipts and Nil Rate Band Usage.
Inheritance Tax Act 1984, Sections 267 (Deemed Domicile) and 48(3) (Excluded Property Trusts).
HMRC. (2024). Guidance on the Residence Nil Rate Band and Downsizing Provisions.
First-tier Tribunal (Tax Chamber). (2022). Fowkes v. Duthy [2022] UKFTT 00452 (TC).