UK and Canada inheritance: the UK IHT departure tail, Canadian deemed disposition and what the 1978 treaty actually does
The UK taxes your worldwide estate for up to 10 years after you leave. Canada taxes your capital gains when you die. A 1978 bilateral estate treaty exists between the UK and Canada — but it was written before the UK’s 2025 LTR reform and before Canada’s current capital gains rules. Here is what it actually covers and where the gaps remain.
UK and Canada inheritance: the UK IHT departure tail, Canadian deemed disposition and what the 1978 treaty actually does
The UK taxes your worldwide estate for up to 10 years after you leave. Canada taxes your capital gains when you die. A 1978 bilateral estate treaty exists between the UK and Canada — but it was written before the UK’s 2025 LTR reform and before Canada’s current capital gains rules. Here is what it actually covers and where the gaps remain.
Quick orientation
- UK IHT: from April 2025, UK IHT applies to the worldwide estate of UK Long-Term Residents — anyone with 10+ qualifying UK tax years — for a departure tail of 3–10 years after leaving the UK
- Canada: no inheritance tax, but deemed disposition taxes all capital gains on the terminal return
- The 1978 treaty: a bilateral estate treaty exists between the UK and Canada — but it predates both the 2025 UK LTR reform and current Canadian deemed disposition rules
Principle 01 — UK IHT: are you still within the departure tail?
From 6 April 2025, the UK replaced domicile-based IHT with the Long-Term Resident (LTR) test. Anyone who was UK tax resident for 10 or more of the preceding 20 UK tax years carries a departure tail after leaving:
| Total qualifying UK years | Departure tail |
|---|---|
| 10–13 years | 3 years |
| 14–16 years | 5 years |
| 17–19 years | 7 years |
| 20+ years | 10 years |
During the tail, UK IHT at 40% above the nil-rate band (£325,000) applies to worldwide assets — including Canadian property, Canadian investment accounts, and global holdings. A UK national with 25 years of prior UK residence who moved to Toronto in 2022 may carry worldwide UK IHT exposure until 2032.
Principle 02 — Canadian deemed disposition on UK assets
When a Canadian tax resident dies, ITA s.70(5) deems all capital property sold at fair market value on the date of death — including UK assets retained after emigration: UK investment properties, UK shares, UK pension fund interests (to the extent they are capital property under Canadian rules).
During the UK departure tail, both systems claim the worldwide estate simultaneously — UK IHT on the estate as a whole at 40%, and Canadian terminal return tax on capital gains. The 1978 treaty is the mechanism that prevents the worst of this double charge.
Principle 03 — The 1978 UK/Canada estate treaty: what it actually covers
The treaty reduces but does not eliminate all overlap. A UK national in Canada within the departure tail, with assets in both countries, should obtain specialist bilateral tax advice to determine how the treaty applies to their specific facts under the post-2025 UK LTR framework.
Principle 04 — Canadian residents as UK-side heirs: the heir-side trigger does not apply
Unlike France, Germany, the Netherlands and Belgium, Canada does not impose inheritance tax on Canadian-resident heirs receiving worldwide inherited assets. A Canadian-resident child who inherits from a UK estate pays no Canadian tax simply for receiving the inheritance. They take the inherited assets at their fair market value as at the date of death (their Canadian cost base for future capital gains), and any future income from those assets is taxable in Canada from that point.
Principle 05 — UK pension assets and Canadian tax treatment
British-born Canadians often retain UK pension assets — defined benefit schemes, personal pensions (SIPPs), and workplace pensions. The tax treatment of UK pension assets in the Canadian estate and in the hands of Canadian-resident beneficiaries is a specialist area. UK pension benefits received by Canadian residents may be subject to both UK tax (depending on the pension type) and Canadian income inclusion. The 1978 estate treaty and the Canada-UK income tax convention interact here in ways that require case-specific advice.
The first step for any British-born Canadian: calculate your UK LTR departure tail. How many qualifying UK tax years did you accumulate before leaving? Subtract from the table above. If the tail is still running, your worldwide assets — Canadian property, Canadian investments, everything — are within UK IHT scope at 40% above £325,000. This calculation is straightforward to do once but is almost never done at the time of emigration.
You should be reviewing this if…
- You are British-born and moved to Canada in the last 10 years with 10 or more qualifying UK tax years
- You have not calculated your UK LTR departure tail expiry date
- You retain UK property, UK investments, a SIPP or UK workplace pension
- You became a Canadian citizen believing this ended your UK IHT exposure
- Your estate plan was drafted entirely in Canada without any UK tax input
- You have Canadian-resident beneficiaries who will inherit from a UK estate — understanding their Canadian cost base position is important
What this article cannot tell you
- Whether you are a UK LTR — requires calculating your specific qualifying UK tax year history
- How the 1978 treaty applies to your specific facts under the post-2025 LTR framework — this is a developing area requiring specialist bilateral advice
- The Canadian and UK tax treatment of your specific UK pension assets
- The length of your exact departure tail — depends on qualifying years accumulated, not calendar years
Frequently Asked Questions
Do UK nationals in Canada still owe UK inheritance tax?
Possibly yes — for up to 10 years after leaving the UK. From April 2025, UK IHT applies to the worldwide estate of UK Long-Term Residents for a departure tail of 3–10 years after leaving, depending on total qualifying UK tax years. A UK national with 20+ years of prior UK residence who moved to Canada in 2022 may carry worldwide UK IHT exposure until 2032. The tail applies regardless of Canadian citizenship or how long the person has lived in Canada.
Is there a tax treaty between Canada and the UK for inheritance?
Yes — the Canada–United Kingdom Estate Tax Convention (1978). It provides a domicile tie-break, situs rules for specific asset types, and credit mechanisms to reduce double taxation. However, it was drafted before the UK’s April 2025 LTR reform and predates Canada’s current capital gains framework. The interaction with the new LTR test is not fully settled, and specialist bilateral advice is required for estates within the UK departure tail.
Does Canada have inheritance tax?
No. Canada has no inheritance or estate tax. But death triggers deemed disposition under ITA s.70(5) — the CRA treats the deceased as having sold all capital property at fair market value on the day before death, and capital gains are taxable in the terminal return. RRSPs and RRIFs are also included as income unless rolling to a surviving spouse or eligible dependent.
Does becoming a Canadian citizen end UK inheritance tax exposure?
No. UK IHT LTR status is based on years of UK tax residence — not on citizenship. Naturalising as a Canadian does not shorten or eliminate the UK departure tail. A person who accumulated 25 years of UK tax residence and naturalised as Canadian immediately after emigrating still carries the full 10-year departure tail.
Do Canadian residents pay tax when they inherit from a UK estate?
Not simply for receiving the inheritance — Canada has no inheritance tax. A Canadian-resident heir receives inherited assets with a cost base equal to the fair market value at the date of death. Future income from those assets is taxable in Canada. Unlike France, Germany or the Netherlands, Canada does not tax Canadian-resident heirs on worldwide inherited assets, so there is no separate heir-side Canadian charge.
What happens to UK pension assets in a Canadian estate?
UK pension assets — defined benefit schemes, SIPPs, workplace pensions — held by Canadian tax residents are a specialist area. UK pension benefits paid to Canadian residents may be subject to UK tax depending on the pension type, and may also be included in Canadian income under certain conditions. The 1978 estate treaty and the Canada-UK income tax convention interact here. Specialist bilateral pension and estate tax advice is required.
FAQs are for general educational purposes only. Not legal, tax or financial advice.
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