If you own a holiday home abroad, hold foreign shares, or have family living in another country, your estate is “cross-border” even if you have never thought of it that way. For the wider picture of how international estates are administered in Ireland, see our pillar guide to cross-border inheritance and international estates.
This guide focuses on planning rather than administration. It explains the four concepts that most often catch families out — domicile versus residence, the EU Succession Regulation, situs, and double taxation — and the practical choices that reduce nasty surprises later.
Why cross-border estates spring surprises
A cross-border estate is one with assets, a deceased person, or beneficiaries connected to more than one country. The surprise is rarely a single rule. It is that several countries each apply their own succession law and their own tax, and those systems were never designed to fit together.
Ireland adds its own quirks. Irish succession law uses a “scission” system, splitting an estate into movable and immovable property and applying different rules to each. Irish tax, meanwhile, follows residence, ordinary residence, and the location of assets. The two systems answer different questions, and planning has to satisfy both.
Domicile versus residence: why it matters for CAT
Domicile is the country you treat as your permanent home and intend to remain in indefinitely. You acquire a domicile of origin at birth, and you keep it unless you establish a domicile of choice by genuinely settling elsewhere. Residence, by contrast, simply measures where you live, mainly by counting days spent in Ireland in a tax year.
Domicile is a far more permanent concept than residence. Someone can be non-resident in Ireland for years and still be Irish-domiciled, because shedding a domicile of origin requires a clear, settled intention to make another country home permanently — not merely living elsewhere for work.
For Capital Acquisitions Tax (CAT) — Ireland's gift and inheritance tax — the charge arises where either the person giving (the disponer) or the person receiving is resident or ordinarily resident in Ireland. It also arises on all Irish-situated property, regardless of where anyone lives. Any one of these is enough to bring an inheritance into the Irish net.
There is one important relief for newcomers. If you are not Irish-domiciled, you are treated as not resident and not ordinarily resident for CAT purposes — unless two conditions are both met:
- You have been tax resident in Ireland for the five consecutive years of assessment immediately before the year of the gift or inheritance, and
- You are also resident or ordinarily resident in Ireland on the date of the gift or inheritance.
Both conditions must apply at the same time.
Until both conditions are satisfied, only the person's Irish-situated assets fall within CAT. Because the second condition is tested on the date of the benefit, a non-domiciled person who built up five years of Irish residence but then left Ireland before that date is not treated as resident for CAT — so their foreign assets stay outside the Irish net.
Domicile
The country you treat as your permanent home and intend to remain in indefinitely. You acquire a domicile of origin at birth and keep it unless you establish a domicile of choice.
A general-law concept that is hard to shake off. It can pull worldwide assets into the Irish CAT net even after years living abroad.
Residence
Where you actually live, measured for tax mainly by the number of days you spend in Ireland in a tax year.
Easier to change than domicile. For CAT, a non-Irish-domiciled person is only treated as resident once they have been tax resident here for the five consecutive years immediately preceding the year of the gift or inheritance AND are also resident or ordinarily resident on the date of that benefit.
Situs (location of the asset)
Where an asset is legally situated: land and buildings where they physically are; shares where the company is incorporated.
Irish-situated property is always within the Irish CAT net, no matter where the disponer or beneficiary lives or is domiciled.
Domicile, residence and situs answer different questions. A cross-border plan usually has to address all three.
| Concept | What it means | Why it matters for a cross-border estate |
|---|---|---|
| Domicile | The country you treat as your permanent home and intend to remain in indefinitely. You acquire a domicile of origin at birth and keep it unless you establish a domicile of choice. | A general-law concept that is hard to shake off. It can pull worldwide assets into the Irish CAT net even after years living abroad. |
| Residence | Where you actually live, measured for tax mainly by the number of days you spend in Ireland in a tax year. | Easier to change than domicile. For CAT, a non-Irish-domiciled person is only treated as resident once they have been tax resident here for the five consecutive years immediately preceding the year of the gift or inheritance AND are also resident or ordinarily resident on the date of that benefit. |
| Situs (location of the asset) | Where an asset is legally situated: land and buildings where they physically are; shares where the company is incorporated. | Irish-situated property is always within the Irish CAT net, no matter where the disponer or beneficiary lives or is domiciled. |
The EU Succession Regulation (Brussels IV)
The EU Succession Regulation, formally Regulation (EU) No 650/2012 and often called “Brussels IV”, governs which country's law applies to cross-border successions within the EU. It applies in 25 member states — all except Ireland and Denmark — to deaths on or after 17 August 2015.
Ireland opted out, so the regulation does not apply to Irish estates directly. It still matters, though, whenever an Irish person owns assets in a participating state. That country's courts will use the regulation to decide which law governs the succession of the local property.
By default, under Article 21, the law of the country where the deceased was habitually resident governs the estate. But Article 22 lets you elect the law of your nationality in your will — and that election works even for a non-participating state like Ireland. An Irish national can choose Irish law to govern their EU property, which can sidestep local forced heirship rules.
This is one of the most useful planning tools in a cross-border will. Without an Article 22 election, a holiday home in France, Spain or Italy may be subject to that country's forced heirship rules, which reserve a fixed share for children regardless of what your will says. We cover the mechanics in our guide to the EU Succession Regulation and Ireland.
Situs: where an asset lives decides who taxes it
Situs is the country where an asset is legally situated. Land and buildings are situated where they physically are. Shares are generally situated where the company is incorporated. Bank deposits are usually situated where the account is held. Situs is the hinge that decides which country can tax an asset and, for land, whose succession law governs it.
Under Irish law, immovable property — land and buildings — is governed by the law of the country where it sits (the rule lawyers call lex situs). So an Irish person's French apartment is governed by French succession law, while their Irish bank accounts follow the law of their domicile. One estate, two legal systems.
Situs catches people out most often with shares. Because a share is situated where the company is incorporated, holding Apple or Microsoft stock makes those assets US-situated — and potentially within US estate tax — even if held through an Irish broker. Our guide to inheriting US shares from an Irish estate explains this exposure and the relief available.
Double taxation: when two countries tax the same inheritance
Double taxation arises when the same asset is taxed both in Ireland and abroad — for example, US estate tax on US shares and Irish CAT on the same shares. Without relief, a beneficiary could pay tax twice on a single inheritance. Ireland reduces this in two ways.
First, Ireland has double-taxation treaties for inheritance with the United Kingdom and the United States. These treaties allocate taxing rights between the two countries and give a credit for the foreign tax, so the same asset is not fully taxed twice.
Second, for every other country there is unilateral relief under section 107 of the Capital Acquisitions Tax Consolidation Act 2003. Where foreign property is subject to a broadly similar foreign tax on the same event, Ireland gives a credit. The credit is the lesser of the foreign tax and the Irish CAT on that property, so you effectively pay the higher of the two rates, not both.
The detail of how these reliefs interact — including how the credit is calculated and claimed — matters in practice. Our guide to double taxation on inheritance and Ireland's treaty network works through examples for both treaty and non-treaty countries.
One will or several? Structuring a cross-border will
A will is the legal document that sets out how your estate passes on death. With assets in more than one country, you face a choice: a single worldwide will, or a separate will for each country. Neither is always right — it depends on where your assets sit and how local courts treat foreign wills.
Single worldwide will
One will, made under one country’s law, covers every asset wherever it is located.
Simpler estates, or where assets sit in countries whose courts readily accept a foreign will. Avoids the risk of one will accidentally revoking another.
Separate will in each country
A distinct will governs the assets in each jurisdiction, each drafted to local form and practice.
Where local property is involved and a local grant is needed anyway. Can speed up administration — but the wills must be drafted together so one does not revoke another.
The right structure depends on where your assets are located and whether a local grant is needed in each country.
| Approach | How it works | When it tends to suit |
|---|---|---|
| Single worldwide will | One will, made under one country’s law, covers every asset wherever it is located. | Simpler estates, or where assets sit in countries whose courts readily accept a foreign will. Avoids the risk of one will accidentally revoking another. |
| Separate will in each country | A distinct will governs the assets in each jurisdiction, each drafted to local form and practice. | Where local property is involved and a local grant is needed anyway. Can speed up administration — but the wills must be drafted together so one does not revoke another. |
The biggest danger with multiple wills is accidental revocation. A standard revocation clause — “I revoke all previous wills” — in a later will can wipe out an earlier one made in another country. If you use separate wills, each must be carefully limited to its own jurisdiction and the wills drafted together.
On the administration side, a will made abroad can still be used in an Irish estate, but it may need to be proved or resealed here. Our guide to foreign wills and Irish probate explains how a foreign will is recognised and what executors should expect.
A practical planning checklist
If your estate touches more than one country, a few steps now will save your executor and beneficiaries time, cost, and stress later. None of these replace tailored advice, but they frame the conversation.
When to get specialist advice
Cross-border estates are where do-it-yourself planning most often goes wrong, because no single advisor sees the whole picture by default. Specialist advice is worth getting before death, and certainly before an estate is administered, whenever more than one country is involved.
It is especially important where the deceased lived abroad or moved countries during their life, where there is property subject to forced heirship rules, or where two countries may both claim taxing rights. A solicitor with cross-border experience and a tax advisor familiar with international inheritance tax can coordinate succession law and tax together — which is exactly where the surprises hide.
theprobate.ie is a coordination platform, not a law firm. We help families and executors bring the right specialists together — solicitors, Chartered Tax Advisers, and valuers — so that a cross-border estate is handled by people who understand both jurisdictions. If you are unsure whether your situation is complex enough to need that, our cross-border probate guide is a good starting point.