Inheritance Tax vs Gift Tax: Strategic Wealth Transfer Planning for Cross-Border Families

The Budget for 2025-2026, delivered by the Financial Secretary on 26 February 2025, did not introduce estate duty, capital gains tax, or a new direct tax on wealth transfers in Hong Kong. This absence is itself the most significant data point for cross-border families planning succession. While the jurisdiction remains a zero-estate-duty territory, the calculus for wealth transfer has shifted materially due to extraterritorial tax enforcement. The Inland Revenue (Amendment) (Taxation of Persons Deriving Income from the Provision of Services in Hong Kong) Ordinance 2024, effective 1 January 2025, tightened the “territorial source principle” for professional services, but more critically, the global minimum tax (Pillar Two) effective for multinational enterprise groups with consolidated revenue of at least EUR 750 million (approximately HKD 6.4 billion) is now in force for fiscal years beginning on or after 1 January 2025. For families holding assets across Hong Kong, Singapore, the United Kingdom, and the United States, the choice between gifting assets during life versus leaving them via inheritance is no longer a question of estate duty rates alone. It is a question of the interaction between Hong Kong’s territorial system and the worldwide taxation regimes of other jurisdictions, particularly the UK’s Inheritance Tax (IHT) regime which underwent its own structural revision in the Autumn Budget 2024, and the US federal estate tax exemption scheduled to sunset on 31 December 2025.

The Core Distinction: Timing of Transfer and Tax Trigger

The fundamental difference between gift tax and inheritance tax is not merely the tax rate applied, but the trigger event and the identity of the taxpayer. An inheritance tax is levied on the estate of the deceased at the point of death, with the estate (or the executor) being the taxpayer. A gift tax is levied on the donor during their lifetime, with the donor typically bearing the liability. In Hong Kong, neither exists as a direct tax. However, for families with assets or members subject to the laws of the UK, the US, or mainland China, the distinction is operational.

UK Inheritance Tax (IHT): The Residence-Based Trap

The UK’s Inheritance Tax Act 1984 imposes IHT at a standard rate of 40% on the value of an estate above the nil-rate band of GBP 325,000 (approximately HKD 3.2 million), with an additional residence nil-rate band of GBP 175,000 (approximately HKD 1.7 million) for a main home passed to direct descendants. As of the Autumn Budget 2024, effective 6 April 2025, the UK government abolished the “non-domiciled” (non-dom) tax status for inheritance tax purposes. Previously, a non-dom individual who had been resident in the UK for 15 out of the last 20 years was deemed domiciled for IHT purposes. From 6 April 2025, the test is residence-based: any individual who has been resident in the UK for 10 out of the last 20 tax years will be within the scope of IHT on their worldwide assets. This is a direct and material tightening.

For a Hong Kong-based family where one parent holds a British National (Overseas) (BNO) passport and has spent significant time in the UK, or where children are educated and subsequently resident in the UK, the 10-year residence test is a ticking clock. A gift made by a UK-resident individual more than seven years before death falls outside the IHT net (a “potentially exempt transfer” or PET). Gifts made within seven years are subject to a sliding scale of tax, known as “taper relief,” which reduces the tax payable but does not reduce the value of the gift for the nil-rate band calculation. For families with assets exceeding GBP 2 million, the residence nil-rate band is tapered away entirely, leaving the standard 40% rate on the excess.

US Federal Estate and Gift Tax: The Unified Credit and the 2025 Sunset

The US system operates a unified credit system under the Internal Revenue Code (IRC) Chapter 11 (Estate Tax) and Chapter 12 (Gift Tax). The estate tax exemption for 2025 is USD 13.99 million per individual (approximately HKD 109 million), meaning a married couple can shelter up to USD 27.98 million from federal estate tax. However, this exemption is scheduled to sunset on 31 December 2025, reverting to approximately USD 5.49 million per individual (indexed for inflation) on 1 January 2026, unless Congress acts. The top federal estate tax rate is 40%.

The gift tax annual exclusion for 2025 is USD 19,000 per donee (approximately HKD 148,000). Gifts exceeding this amount require a gift tax return (Form 709) and consume a portion of the donor’s lifetime exemption. The critical strategic point for cross-border families is that the US imposes estate tax on the worldwide assets of a US citizen or a US domiciliary (a person who resides in the US with no present intention of leaving). A Hong Kong permanent resident who holds a US green card or US citizenship is subject to US estate tax on their Hong Kong assets, including Hong Kong real estate and Hong Kong listed shares. The US-Hong Kong double taxation agreement does not cover estate tax.

Strategic Asset Transfer Structures for Hong Kong Families

Given the absence of Hong Kong estate duty and the presence of extraterritorial regimes, the choice between gifting and bequeathing is a function of asset type, jurisdiction of the beneficiary, and the family’s liquidity position at death.

Gifting During Lifetime: The Seven-Year Clock and Capital Gains

For UK IHT planning, the most commonly deployed structure is the seven-year PET. A gift of any asset (cash, shares, real estate) by a UK-resident individual is a PET. If the donor survives seven years, the gift falls out of the IHT net entirely. If the donor dies within seven years, the gift is brought back into the estate, but taper relief applies for gifts made three to seven years before death. The taper relief reduces the tax rate, not the value of the gift. For example, a gift of HKD 10 million made six years before death would be taxed at 8% (20% of the 40% rate) on the value above the nil-rate band.

The risk in gifting Hong Kong real estate is the potential crystallisation of a capital gain. Hong Kong does not impose capital gains tax, but the Stamp Duty Ordinance (Cap. 117) imposes ad valorem stamp duty on the sale of Hong Kong property. A gift of Hong Kong property to a close relative (spouse, parent, child, sibling) is exempt from stamp duty under Schedule 1, Part I, Item 1 of the Stamp Duty Ordinance, provided the transfer is by way of gift and not for consideration. However, if the property is subject to a mortgage, the Inland Revenue Department (IRD) may treat the assumption of the mortgage by the donee as consideration, triggering stamp duty at the full rate. For non-close relatives, the gift is treated as a sale at market value, and the buyer (the donee) must pay stamp duty at the applicable rate (up to 4.25% for a Hong Kong permanent resident, and 15% for a non-permanent resident or a second property).

For US estate tax purposes, a gift of Hong Kong assets by a US citizen or green card holder is a taxable gift if it exceeds the annual exclusion. The gift tax return must be filed, and the lifetime exemption is consumed. The strategic advantage of gifting before the 2025 sunset is to lock in the current USD 13.99 million exemption. If the exemption is reduced to USD 5.49 million in 2026, the “clawback” rules under the Treasury Regulations (Section 20.2010-1) protect gifts made under the higher exemption. This means a donor who gifts USD 10 million in 2025 will not be penalised if the exemption drops in 2026, as the exemption used is the exemption in effect at the time of the gift. This is a narrow and time-sensitive window.

Bequeathing at Death: The Step-Up in Basis and the Hong Kong Advantage

The primary advantage of bequeathing assets at death rather than gifting them during life is the “step-up in basis” under US tax law. Under IRC Section 1014, the basis of an asset inherited from a decedent is its fair market value at the date of death (or the alternate valuation date six months later). This means that if a Hong Kong property was purchased for HKD 5 million and is worth HKD 20 million at the death of the US citizen owner, the heir’s basis is HKD 20 million. If the heir sells the property immediately, there is no capital gain. If the property had been gifted during life, the heir would have received the donor’s carryover basis of HKD 5 million, and a sale at HKD 20 million would trigger a capital gain of HKD 15 million, potentially subject to US capital gains tax at the long-term rate of 20% plus the 3.8% Net Investment Income Tax (NIIT), for a total of 23.8%.

For UK IHT purposes, there is no step-up in basis. The heir inherits the asset at the donor’s original cost basis, and a subsequent sale triggers capital gains tax on the full gain from the original purchase price. However, the UK does provide for “inheritance tax hold-over relief” under Section 165 of the Taxation of Chargeable Gains Act 1992 for gifts of business assets and certain unlisted shares. This relief defers the capital gain until the donee sells the asset, but it does not apply to gifts of cash or listed shares.

For Hong Kong families, the optimal strategy is often to retain Hong Kong assets until death, as there is no Hong Kong estate duty and no Hong Kong capital gains tax. The US citizen heir inherits the asset at a stepped-up basis, and if the heir is not a US person, the US estate tax may be avoided if the decedent is not a US citizen or domiciliary. If the decedent is a US citizen, the estate tax return (Form 706) must be filed if the gross estate exceeds the exemption, but the step-up in basis remains.

Jurisdictional Pitfalls: The Interaction of Hong Kong, Mainland China, and Singapore

Cross-border families often hold assets in multiple jurisdictions, and the interaction of tax regimes can produce unexpected liabilities.

Mainland China: The Inheritance Tax on Hong Kong Assets

Mainland China does not have a nationwide inheritance tax or gift tax. However, the Individual Income Tax Law (IIT Law) effective 1 January 2019, and its implementing regulations, treat gifts of assets from a non-resident to a resident as a deemed disposal. Under the IIT Law, a gift of Hong Kong shares or Hong Kong property to a mainland Chinese resident (a person who is domiciled in China or who has resided in China for 183 days in a tax year) may be treated as a taxable transfer. The tax is levied on the difference between the fair market value of the asset and the donor’s cost basis, at the progressive IIT rate of up to 45% for income from “other sources.” This is a de facto gift tax on cross-border transfers.

For families with mainland Chinese resident children, gifting Hong Kong assets during life can trigger a significant IIT liability in China. The preferred structure is to hold the assets in a Hong Kong trust or a BVI company, where the beneficiary is a shareholder of the holding company rather than the direct owner of the underlying asset. This is a common structure for families using a family office in Hong Kong, but the IRD’s recent focus on “economic substance” in Hong Kong and the BVI’s Economic Substance Act (effective 2019) require that the company have adequate physical presence and management in the jurisdiction.

Singapore: The Absence of Estate Duty and the Remittance Basis

Singapore abolished estate duty on 15 February 2008. For assets situated in Singapore (Singapore real estate, Singapore bank accounts, Singapore listed shares), there is no estate duty regardless of the domicile or residence of the deceased. However, Singapore does not have a gift tax. A gift of Singapore assets is not subject to tax in Singapore. The risk for a Hong Kong family with Singapore assets is the US or UK tax exposure of the donor or the heir. If a US citizen donor gifts Singapore real estate worth USD 5 million, the gift is a taxable gift in the US, consuming the donor’s exemption. If the donor dies while still owning the Singapore real estate, the asset is included in the US gross estate.

For UK IHT purposes, Singapore assets held by a UK-resident individual are within the scope of IHT. The UK has a double taxation agreement with Singapore for inheritance tax, but it does not eliminate the tax; it provides a credit for tax paid in Singapore. Since Singapore has no estate duty, no credit is available, and the full 40% IHT applies.

The Role of Trusts and Life Insurance in Wealth Transfer

Trusts and life insurance policies are the two most common instruments for managing the tax timing mismatch between gift and inheritance.

Trusts: The Irrevocable Life Insurance Trust (ILIT) and the Hong Kong Trust

For US persons, the most common trust structure for wealth transfer is the Irrevocable Life Insurance Trust (ILIT). The ILIT owns a life insurance policy on the life of the grantor. Upon the grantor’s death, the death benefit is paid to the trust, and the proceeds are not included in the grantor’s gross estate for US estate tax purposes. The trust is structured so that the beneficiaries (typically children) have a “Crummey power” (a right to withdraw contributions for a limited period) to qualify the premium payments as gifts of a present interest, thereby using the annual gift tax exclusion.

For Hong Kong families with no US exposure, a Hong Kong trust (governed by the Trustee Ordinance, Cap. 29) can be used to hold Hong Kong assets. The trust is not a separate taxpayer in Hong Kong; the trustee is the legal owner, and the trust income is assessed on the trustee at the standard profits tax rate of 16.5%. However, if the trust is a “discretionary trust,” the income can be distributed to beneficiaries and taxed in their hands. For wealth transfer purposes, the trust avoids the probate process in Hong Kong, which can take 6-12 months for a standard estate. The trust deed should specify that the trust is irrevocable and that the settlor has no retained interest, to avoid the trust assets being included in the settlor’s estate for UK or US purposes.

Life Insurance: The Death Benefit and the IHT Exemption

A life insurance policy taken out by a Hong Kong resident on their own life, with the policy owned by the insured, is subject to Hong Kong estate duty if the insured dies. However, since Hong Kong has no estate duty, this is a non-issue. The more relevant consideration is the treatment of the death benefit for UK IHT. Under the IHT Act 1984, Section 11, a life insurance policy written in trust for a named beneficiary is not part of the deceased’s estate, provided the policy was taken out before the diagnosis of any terminal illness and the premiums were paid from the insured’s normal expenditure out of income. This is a common planning tool for UK-resident individuals.

For US persons, the death benefit of a life insurance policy is included in the gross estate if the insured had any “incidents of ownership” (the right to change the beneficiary, borrow against the policy, or surrender the policy) at the time of death. This is why the ILIT is used: the trust owns the policy, and the insured has no incidents of ownership.

Practical Takeaways for 2025-2026

1. Lock in the US lifetime exemption before 31 December 2025. Any US citizen or green card holder with a net worth exceeding USD 5.49 million should consider making gifts up to the current USD 13.99 million exemption before the scheduled sunset. The “clawback” protection under Treasury Regulations means these gifts are safe even if the exemption drops in 2026.

2. Structure Hong Kong property ownership to avoid stamp duty on gifts. If gifting Hong Kong real estate to a close relative, ensure the transfer is a pure gift with no assumption of mortgage to qualify for the stamp duty exemption under the Stamp Duty Ordinance. For gifts to non-close relatives, consider holding the property through a BVI or Hong Kong company and gifting the shares instead, which attracts stamp duty at 0.2% of the share value rather than the ad valorem property rate.

3. Monitor the UK 10-year residence test for IHT purposes. Any family member who has been resident in the UK for 10 out of the last 20 tax years is now deemed domiciled for IHT under the Autumn Budget 2024 changes effective 6 April 2025. If they intend to return to Hong Kong, they should consider making PETs of their Hong Kong assets before the 10-year threshold is reached, starting the seven-year clock.

4. Use a Hong Kong trust for assets intended for mainland Chinese beneficiaries. Direct gifts of Hong Kong assets to mainland Chinese residents trigger a deemed disposal under the IIT Law at progressive rates up to 45%. A trust structure with a BVI holding company can defer this tax until the beneficiary actually receives distributions from the trust.

5. Review the step-up in basis for US citizen heirs. For a US citizen heir inheriting Hong Kong assets, the step-up in basis under IRC Section 1014 eliminates the capital gain on the appreciation during the decedent’s lifetime. This makes bequeathing assets at death significantly more tax-efficient than gifting them during life, provided the estate tax exemption is sufficient to cover the value of the assets.