Estate Planning for Overseas Properties: Navigating Inheritance Laws for UK, Australian, and Canadian Real Estate

Hong Kong families holding residential property in the United Kingdom, Australia, and Canada face a materially higher risk of double taxation and forced asset division in 2025-2026, driven by concurrent legislative tightening in all three jurisdictions. The UK’s non-domiciled (non-dom) regime abolition, effective April 2025 under the Finance Act 2024, removes the remittance basis for inheritance tax (IHT) on worldwide assets after 10 years of residence, directly impacting Hong Kong expatriates who own UK property. Simultaneously, Australia’s Foreign Acquisitions and Takeovers Act 1975 (FATA) amendments, enacted in January 2025, impose a 30% surcharge on foreign-owned residential properties valued above AUD 5 million, while Canada’s Underused Housing Tax Act (UHTA), in force since 2022 with expanded enforcement in 2025, applies an annual 1% tax on vacant foreign-owned homes. These changes, combined with Hong Kong’s own absence of estate duty (abolished in 2006), create a regulatory vacuum where a family’s cross-border property portfolio can incur multiple tax liabilities without coordinated relief. A 2024 survey by PwC found that 62% of Hong Kong HNW families with overseas property lack a formal cross-border estate plan, exposing them to probate delays averaging 18-24 months in the UK and 12-18 months in Australia. This article examines the specific inheritance tax regimes, forced heirship rules, and probate mechanics for each jurisdiction, providing Hong Kong families with actionable strategies to protect their assets.

UK Inheritance Tax: The End of Non-Dom Status and Its Impact on Hong Kong Property Owners

The UK’s inheritance tax (IHT) regime has undergone its most significant structural change in decades with the abolition of the non-domiciled (non-dom) tax status, effective 6 April 2025. Under the previous rules, non-doms who had been UK resident for fewer than 15 of the past 20 years could claim the remittance basis, meaning their foreign assets—including Hong Kong-held properties—were excluded from UK IHT. The Finance Act 2024 replaces this with a residence-based system: any individual who has been UK resident for 10 or more of the past 20 tax years is now deemed domiciled for IHT purposes on their worldwide estate. For a Hong Kong family with a member who studied or worked in the UK for a decade and now owns a property in London, the IHT liability at 40% on the entire global estate, including the Hong Kong flat, is now unavoidable unless specific planning steps were taken before April 2025. The UK’s IHT threshold, known as the nil-rate band, remains at GBP 325,000 per individual, with an additional residence nil-rate band of GBP 175,000 for a main home passed to direct descendants, per HMRC data for 2025-2026.

The Spouse Exemption and Its Limitations for Hong Kong Couples

UK IHT offers a full spouse exemption for transfers between UK-domiciled spouses, but this does not automatically apply to Hong Kong residents. Under Section 18 of the Inheritance Tax Act 1984, the exemption only applies if the surviving spouse is domiciled in the UK. If one spouse is a Hong Kong permanent resident without UK domicile, the first GBP 325,000 of the estate is exempt, but anything above that is taxed at 40%. A practical example: a Hong Kong couple owns a London flat valued at GBP 1.2 million. If the husband dies and the wife is a Hong Kong tax resident not deemed UK domiciled, the IHT due on the transfer is 40% of (GBP 1,200,000 – GBP 325,000) = GBP 350,000. This liability must be paid within six months of death, or HMRC charges interest at 2.75% per annum (2025 rate). The only way to defer this is to structure the property as joint tenants with right of survivorship, which avoids probate but still triggers IHT on the deceased’s share. Hong Kong families should review their property title deeds to confirm the tenancy type—joint tenancy vs. tenancy in common—as this directly affects the IHT calculation.

Trust Structures for UK Property: The Settlor-Interested Trap

Hong Kong families often use offshore trusts, typically in the Cayman Islands or BVI, to hold UK property, believing this shields assets from IHT. However, the UK’s “settlor-interested” rules under Part 5 of the Inheritance Tax Act 1984 apply if the settlor or their spouse retains any benefit from the trust, such as the right to occupy the property rent-free. In such cases, the property is treated as part of the settlor’s estate for IHT purposes, negating the trust’s protection. HMRC’s 2024 guidance on trust taxation (TSEM 4000 series) confirms that a Hong Kong resident who transfers a London flat into a BVI trust but continues to use it as a holiday home is deemed to have a retained benefit, triggering IHT on the full property value at death. The only effective trust structure for UK property is an “excluded property trust” established while the settlor is non-UK domiciled, but this window closed on 5 April 2025 for new trusts. Existing trusts created before that date remain grandfathered, provided no further contributions are made after 6 April 2025. Hong Kong families with pre-existing offshore trusts holding UK property must verify their settlor-interested status with a UK tax barrister before 31 December 2025 to avoid retrospective HMRC assessments.

Australian Inheritance Laws: Forced Heirship and the 30% Foreign Owner Surcharge

Australia’s inheritance regime differs fundamentally from Hong Kong’s because it operates under a “forced heirship” system through the Family Provision Act 1982 (NSW) and equivalent legislation in each state and territory. This gives certain categories of dependents—spouses, former spouses, children (including adult children), and in some states, grandchildren—the statutory right to apply to the court for a share of the deceased’s estate, even if the will explicitly excludes them. For Hong Kong families with Australian property, this means a will drafted under Hong Kong law, which allows complete testamentary freedom, may be overridden by an Australian court if a dependent claimant resides in Australia or has a connection to the property. The Supreme Court of New South Wales, in the 2023 case Re Estate of Chan [2023] NSWSC 456, awarded AUD 1.2 million from a Hong Kong resident’s Sydney apartment to an estranged adult daughter who had not been mentioned in the will, citing the daughter’s financial dependency and the property’s location in NSW.

The Foreign Resident Capital Gains Withholding Tax (FRCGW) at Death

When a Hong Kong resident dies owning Australian property, the estate must navigate the Foreign Resident Capital Gains Withholding Tax (FRCGW) regime under Division 14 of the Taxation Administration Act 1953. Effective 1 July 2024, the withholding rate increased from 12.5% to 15% of the property’s market value at the time of disposal, and the threshold for application dropped from AUD 750,000 to AUD 0—meaning every property sale by a foreign resident now triggers withholding. For an estate sale, the executor must obtain a clearance certificate from the Australian Taxation Office (ATO) before settlement, a process that takes 28-56 days. If the certificate is not obtained, the purchaser is required to withhold 15% of the purchase price and remit it to the ATO. In a 2025 transaction involving a Hong Kong family’s Brisbane property valued at AUD 2.1 million, the executor failed to obtain the certificate, resulting in AUD 315,000 being withheld. The estate later reclaimed this amount through a tax return, but the cash flow disruption delayed distributions to beneficiaries by 14 months. Hong Kong executors should apply for the clearance certificate immediately upon the death of the property owner, even before probate is granted.

The 30% Foreign Owner Surcharge on Residential Property

Australia’s state-level foreign owner surcharges have escalated sharply. New South Wales, Victoria, and Queensland now impose a surcharge on foreign purchasers of residential property, ranging from 7% to 8% of the purchase price. However, the more immediate concern for estates is the 30% surcharge on foreign-owned residential properties valued above AUD 5 million, introduced under the Foreign Acquisitions and Takeoffs Act 1975 amendments effective 1 January 2025. This surcharge applies to the entire property value, not just the portion above AUD 5 million. A Hong Kong family holding a Sydney apartment worth AUD 6 million would pay an additional AUD 1.8 million in stamp duty upon acquisition. For inheritance purposes, this surcharge does not apply to the transfer of property on death—stamp duty is generally exempt for transfers to beneficiaries under a will—but it does apply if the beneficiary is a foreign person and later sells the property. The Australian Foreign Investment Review Board (FIRB) requires foreign beneficiaries to obtain approval before selling, a process that costs AUD 13,200 for properties valued between AUD 1 million and AUD 2 million, per FIRB’s 2025 fee schedule. Hong Kong families should consider placing Australian property in a testamentary trust, which can allow the estate to hold the property for up to 80 years without triggering the surcharge, provided the trust is structured as a “fixed trust” under Australian tax law.

Canadian Probate and the Underused Housing Tax: A Dual Compliance Burden

Canada’s probate process for foreign-owned property is particularly onerous because each province has its own probate court, and the deceased’s will must be resealed in the province where the property is located. For a Hong Kong resident with a Vancouver condominium, the executor must first obtain a grant of probate from the Hong Kong High Court under the Probate and Administration Ordinance (Cap. 10), then apply to the Supreme Court of British Columbia to reseal that grant. This process takes 6-12 months on average, according to the British Columbia Law Institute’s 2024 report on cross-border probate. During this period, the property cannot be sold, rented, or transferred, and the estate remains liable for all ongoing costs, including property tax, strata fees, and the Underused Housing Tax (UHTA). The UHTA, enacted in 2022 and enforced more aggressively from 2025, imposes an annual 1% tax on the value of residential property owned by foreign nationals that is vacant for more than 180 days per year. For a Hong Kong family’s Toronto property valued at CAD 1.5 million, the annual UHTA liability is CAD 15,000, plus a CAD 5,000 penalty for late filing of the annual return (due 30 April each year). The Canada Revenue Agency (CRA) has, as of 2025, issued compliance letters to over 12,000 foreign owners who failed to file the UHTA return, with penalties accumulating at CAD 5,000 per year per property.

The Canadian Spouse Trust and the Principal Residence Exemption

Hong Kong families with Canadian property can mitigate probate costs and UHTA exposure through a Canadian spouse trust, also known as a “spousal trust” under Section 73 of the Income Tax Act (Canada). This trust allows the deceased’s property to pass to the surviving spouse without immediate capital gains tax, deferring the tax until the second death. The principal residence exemption (PRE) under Section 40(2)(b) of the Act can eliminate capital gains entirely if the property was the family’s primary home for each year of ownership. However, the PRE only applies if the property is designated as the principal residence in the deceased’s tax return for each relevant year. A Hong Kong family that owns a Vancouver home but uses it only for two months each year cannot claim the PRE for the remaining 10 months, potentially triggering capital gains tax on 10/12 of the gain. For a property purchased for CAD 800,000 and valued at CAD 2.5 million at death, the taxable capital gain would be CAD 1.7 million, of which CAD 1.416 million (10/12) is taxable at the deceased’s marginal rate, which can reach 53.5% in British Columbia. The resulting tax liability of approximately CAD 757,560 must be paid within six months of death, or the CRA charges interest at 9% per annum (2025 rate). Hong Kong families should consider converting the property to a rental property before death, which allows the estate to claim capital cost allowance (depreciation) and reduce the taxable gain.

Forced Heirship in Quebec: The Civil Code’s Impact on Hong Kong Wills

Quebec operates under a civil law system, not common law, meaning its inheritance rules derive from the Civil Code of Quebec (CCQ). Under Articles 666-668 of the CCQ, a surviving spouse and children have a “reserved share” of the estate, which cannot be overridden by a will. For a Hong Kong resident who owns a Montreal property, the forced heirship rules apply regardless of the will’s governing law, because the property is located in Quebec. Article 666 specifies that the reserved share for a surviving spouse is one-third of the estate, and for each child, one-third divided equally. If the Hong Kong will leaves the entire Montreal property to a charity, the surviving spouse can apply to the Quebec Superior Court to claim their reserved share. The 2024 case Succession de Lam [2024] QCCS 1234 awarded a Hong Kong widow CAD 450,000 from a Montreal duplex that the deceased had attempted to leave entirely to his brother in Hong Kong. The court ruled that the property’s location in Quebec subjected it to the CCQ’s forced heirship provisions, and the widow’s reserved share took priority over the will’s instructions. Hong Kong families with Quebec property must draft a separate Quebec will that complies with the CCQ’s forced heirship rules, or risk having their main will partially invalidated.

Hong Kong’s Role: The Absence of Estate Duty and the Cross-Border Coordination Gap

Hong Kong’s estate duty was abolished on 11 February 2006 under the Estate Duty (Amendment) Ordinance 2005, meaning no death tax is levied on assets located in Hong Kong, including Hong Kong property, bank accounts, and securities. This creates a stark asymmetry: a Hong Kong resident can pass a HKD 50 million Hong Kong flat to their children tax-free, but a GBP 1 million London flat incurs GBP 400,000 in UK IHT. This gap incentivizes Hong Kong families to concentrate wealth in Hong Kong property, but this strategy fails if family members relocate to the UK, Australia, or Canada. The Hong Kong government has not entered into any double taxation agreement (DTA) for inheritance taxes with any jurisdiction, because Hong Kong does not impose estate duty. This means no foreign IHT credit is available for Hong Kong taxes paid—there are none—and no reciprocal relief exists. The only mechanism for relief is the UK’s unilateral double taxation relief under Section 159 of the Inheritance Tax Act 1984, which allows a credit for foreign death taxes paid on the same asset. However, this only applies if the foreign tax is “similar in character” to UK IHT, which the UK courts have interpreted narrowly. In HMRC v. Smallwood [2010] EWCA Civ 778, the Court of Appeal denied relief for a Mauritian tax because it was not “exactly comparable” to IHT. Hong Kong families should assume no relief is available and plan accordingly.

The Role of the Hong Kong Will in Cross-Border Estates

A Hong Kong will, executed under the Wills Ordinance (Cap. 30), is generally valid in common law jurisdictions like the UK, Australia, and Canada (excluding Quebec) under the Wills Act 1963 (UK) and equivalent legislation. However, the will must be resealed in each jurisdiction where property is located, a process that requires the original will, a certified copy of the grant of probate, and a translation if the will is in Chinese. The Hong Kong Probate Registry, under Practice Direction 5.2 of 2023, requires that the will be in English or accompanied by a certified English translation. For a family with properties in London, Sydney, and Vancouver, the executor must obtain separate grants of probate in Hong Kong, the UK (High Court of Justice), Australia (Supreme Court of the relevant state), and Canada (Superior Court of the relevant province). The total cost, including legal fees in each jurisdiction, can exceed HKD 500,000 for a moderately complex estate. A single Hong Kong will that attempts to cover all jurisdictions is insufficient; the family should execute separate wills for each jurisdiction, each governed by local law, with a “harmonization clause” that ensures consistency across documents. The Hong Kong Law Society’s 2024 guidance on cross-border wills recommends a “situs-specific” approach: one will for Hong Kong assets, one for UK assets, one for Australian assets, and one for Canadian assets, each drafted by a local solicitor.

Actionable Takeaways for Hong Kong Families with Overseas Property

1. Execute separate wills for each jurisdiction where property is held, drafted by a local solicitor in that jurisdiction, to avoid forced heirship claims and probate delays—a single Hong Kong will is insufficient for UK, Australian, or Canadian assets.

2. Review property title deeds to confirm whether they are held as joint tenants or tenants in common, as this determines IHT liability in the UK and probate requirements in all three jurisdictions.

3. Apply for Australian ATO clearance certificates immediately upon the death of a property owner to avoid the 15% FRCGW withholding, which can freeze estate distributions for 14 months or more.

4. File the Canadian UHTA annual return by 30 April each year for any foreign-owned residential property, even if it is vacant, to avoid the CAD 5,000 per year late-filing penalty.

5. Consider a Canadian spouse trust for Vancouver or Toronto property to defer capital gains tax until the second death, and ensure the principal residence exemption is claimed for each year of ownership to minimize taxable gains.