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The Legal Snapshot
The answer depends on where the deceased had their habitual residence at death and on whether the will chose a law. This guide covers deaths on or after 17 August 2015, when the Succession Regulation began to apply (art. 83(1)), and a deceased connected with England and Wales; the law of Scotland and of Northern Ireland is not covered.
| Scenario | Applicable law | Tax exposure | Notes |
|---|---|---|---|
| Deceased lived in England or Wales; the will chose no law | English law, the law of the last habitual residence (Succession Regulation art. 21(1)), but English law refers land to the law of where it lies, so Spanish law governs the Spanish property (renvoi, art. 34(1)(a)). Spanish legal writers debate the resulting split of the estate. | Spanish inheritance tax (ISD) is charged on what each heir acquires (Ley 29/1987 art. 3(1)(a)); a heir who lives outside Spain pays only on assets in Spain (art. 7). A forced heir who claims a share is taxed on that share. | Spanish forced shares can reach the Spanish property even though the will left everything to someone else. |
| Deceased lived in England or Wales; the will validly chose the law of England and Wales | The chosen law governs the whole succession, with no renvoi (Succession Regulation arts 22 and 34(2)). Under that law, certain family members and dependants can ask an English court for reasonable financial provision only where the deceased died domiciled in England and Wales (Inheritance (Provision for Family and Dependants) Act 1975 s.1(1)). | As in the first row: ISD on what each heir acquires, and only on assets in Spain for a heir who lives outside Spain (Ley 29/1987 arts 3(1)(a) and 7). | The choice must be express or shown by the terms of the will (art. 22(2)). A will made before 17 August 2015 under the law of the testator's nationality is treated as choosing that law (art. 83(4)). |
| Deceased lived in Spain; the will chose no law | Spanish law governs the whole estate (Succession Regulation art. 21(1)), and Spain's internal rules decide which Spanish civil law applies (art. 36(1)). Where the Civil Code applies, the forced shares are those in arts 806 to 839. | A heir who lives in Spain is taxed on everything inherited, wherever it is (Ley 29/1987 art. 6(1)); a heir who lives outside Spain only on assets in Spain (art. 7). | The forced shares are then reckoned on the whole estate as Spanish authorities see it. UK courts apply their own rules to the UK assets. |
| Deceased lived in Spain; the will validly chose the law of their nationality | The chosen law, for example the law of England and Wales, governs the whole succession, with no renvoi (Succession Regulation arts 22 and 34(2)). | The choice of law does not change the tax: residence in Spain brings in everything inherited (Ley 29/1987 art. 6(1)), non-residence only assets in Spain (art. 7). | A chosen law can be refused only if applying it is manifestly incompatible with Spanish public policy (art. 35). No ruling read for this guide decides whether that covers the lack of forced shares. |
Last updated against the sources
Last updated according to the relevant sources on 3 November 2026. The statements are drafted from the primary legal sources listed below. This is general information, not legal or tax advice.
When do Spanish forced shares apply to a UK will?
Spanish forced shares (legítima, often called forced heirship in English) apply only where Spanish law governs the succession, or the part of it that concerns the Spanish property. The Succession Regulation (sometimes called Brussels IV) decides this for Spanish notaries, land registrars and courts. The law that governs the succession also governs the forced shares, which the Regulation calls reserved shares (Succession Regulation art. 23(2)(h)).
The starting point is the law of the State where the deceased had their habitual residence at death (art. 21(1)). If the deceased was manifestly more closely connected with another State, that State's law applies instead (art. 21(2)). A person may instead choose the law of a State whose nationality they hold, either when making the choice or at death (art. 22(1)).
Where the deceased lived in England or Wales and the will chose no law, the law of England and Wales applies, but English law refers land to the law of where it lies. Spanish notaries and land registrars follow that referral back (renvoi) for the Spanish property, so Spanish law governs it (art. 34(1)(a)). Spanish legal writers debate the resulting split of the estate.
Where the will validly chose the law of the deceased's nationality, that law governs the whole succession and no renvoi applies (art. 34(2)). The choice of the law of England and Wales therefore keeps Spanish forced shares out. The choice must be made expressly in a will, or be shown by the will's terms (art. 22(2)). The Regulation does not require it to be in a Spanish will. A will made before 17 August 2015 under the law the testator could have chosen is treated as choosing that law (art. 83(4)).
Under the law of England and Wales, certain family members and dependants can apply to an English court for reasonable financial provision, but only where the deceased died domiciled in England and Wales (Inheritance (Provision for Family and Dependants) Act 1975 s.1(1)). Domicile is a succession test here; it is not the test for UK inheritance tax.
Who are the forced heirs, and how large are the shares?
Under the Civil Code the forced share is the part of the estate the testator cannot dispose of, because the law reserves it for certain heirs, called forced heirs (herederos forzosos in the Code) (Código Civil art. 806). They are the children and descendants; failing them, the parents and ascendants; and the surviving spouse, in the way the Code sets out (art. 807).
The children's forced share is two thirds of the estate. The testator may give one of those two thirds to one or more of the children or descendants as an extra share, called the mejora. The remaining third is free (art. 808). The parents' forced share is half of the estate, or one third where they inherit alongside the surviving spouse (art. 809).
A surviving spouse who was not legally or in fact separated from the deceased has a life interest (usufructo), not ownership. Alongside children, it is a life interest in the mejora third (art. 834). Alongside parents but no descendants, it is a life interest in half of the estate (art. 837), and with neither, in two thirds (art. 838). The heirs may buy out the life interest with an annuity, the income of particular assets or a capital sum, by agreement or by court order (art. 839).
The share is worked out on the value of the estate at death, less debts and charges, with certain earlier gifts added back (art. 818). The testator cannot take the forced share away, or burden it with conditions, except where the law allows (art. 813).
Do Catalonia and the Balearic Islands follow different rules?
Several Spanish regions have their own civil law of succession, and Spain's internal rules decide which one applies (Succession Regulation art. 36(1)). Those internal rules turn on a status called vecindad civil (Código Civil art. 16(1)), which a foreign national acquires only on becoming Spanish (arts 14 and 15). No text read for this guide settles which regional law then applies to a foreign deceased's Spanish property. The examples below show how far the answer can differ.
In Catalonia the forced share is one quarter of the estate, shared equally by all the children, and it is a right to a value rather than to particular assets (Catalan Civil Code arts 451-1, 451-3 and 451-5). Gifts made in the ten years before death, other than customary presents, are added to the estate for the calculation, and gifts counted towards the forced share are added whatever their date (art. 451-5). The claim expires ten years after the death (art. 451-27).
In Mallorca and Menorca the children's forced share is one third of the estate if there are four children or fewer, and half if there are more (Balearic Civil Law Compilation, Compilación de Derecho Civil de las Islas Baleares, arts 42 and 65). A surviving spouse alongside descendants has a life interest in half of the estate (art. 45). In Ibiza and Formentera the forced heirs are the children and the parents, with the same one-third or one-half share for the children (art. 79).
What happens if the will leaves a forced heir less?
The will is not void. A forced heir who received less than the forced share may ask for the shortfall to be made up (Código Civil art. 815), and gifts in the will that cut into forced shares are reduced at the forced heirs' request (art. 817). Until a forced heir asks, the will takes effect as written.
Leaving a forced heir out of the will altogether does not remove the forced share (art. 814). Where children were left out unintentionally and the will names the spouse as heir, that appointment is cut back only as far as it harms the forced shares (art. 814).
A forced heir can be disinherited only for a cause set out in the law, and only in a will that states the cause (arts 848 and 849). For children the causes include refusing maintenance to the parent without a legitimate reason, and physical ill-treatment or serious verbal abuse (art. 853). Catalan law adds a lasting absence of family relationship caused only by the heir (Catalan Civil Code art. 451-17(2)(e)).
Catalan law sets a ten-year limit for the claim (art. 451-27). The Civil Code articles on forced shares set no specific period for the claim; how long a claim stays open under the Code is a question for an adviser.
Common errors about forced shares
"Spanish law is the default unless the UK will elected English law." Under the Succession Regulation the default is the law of the last habitual residence (art. 21), and a UK national can choose only the law of their nationality (art. 22). For a UK-resident deceased, Spanish notaries and land registrars apply Spanish law to the Spanish land under art. 34.1(a) unless the will validly chose English law.
"Without a Spanish will, Spanish forced heirship applies." The choice of law can be made in any will, in a declaration in the form of a disposition of property upon death (Succession Regulation art. 22(2)). For a deceased who lived in England or Wales and chose no law, Spanish law reaches the Spanish property through renvoi (art. 34(1)(a)), not because the will was made outside Spain.
"Forced heirship takes two thirds from the spouse automatically." A forced heir who receives less must claim the shortfall, and the will stands until then (Código Civil arts 815 and 817). Under the Civil Code a surviving spouse alongside children has a life interest in one third, not ownership (art. 834).
Legal Sources Cited
- Regulation (EU) No 650/2012 (Succession Regulation), arts 21, 22, 23, 34, 35, 36 and 83 (EU): Which law governs the succession and the forced shares, choice of law, renvoi, public policy, Spanish regional law, transitional rules
- Código Civil, arts 14 to 16, 806 to 809, 813 to 818, 834 and 837 to 839, 848, 849 and 853 (Spain): Forced heirs and their shares, the spouse's life interest, claims for the shortfall, disinheritance, internal conflicts of law
- Ley 10/2008, Book Four of the Catalan Civil Code, arts 451-1, 451-3, 451-5, 451-17 and 451-27 (Spain): Catalan forced share: who, how much, disinheritance, time limit
- Decreto Legislativo 79/1990, Compilación de Derecho Civil de las Islas Baleares, arts 42, 45, 65 and 79 (Spain): Forced shares in Mallorca, Menorca, Ibiza and Formentera
- Ley 29/1987 del Impuesto sobre Sucesiones y Donaciones, arts 3, 6 and 7 (Spain): Inheritance tax on each heir's acquisition; resident and non-resident heirs
- Inheritance (Provision for Family and Dependants) Act 1975, s.1 (United Kingdom): Family provision claims in England and Wales, only where the deceased died domiciled there
General information, not legal advice. General information about Spanish forced shares and UK wills under the law of England and Wales and Spain as at 20 October 2026. Not legal advice; no lawyer-client relationship. Other laws may apply and the law changes. Take advice from a qualified lawyer in the relevant jurisdiction before acting. CrossBorder Estate is not a law firm.
General information, not tax advice. General information on Spanish inheritance tax (ISD) for deaths in 2026 (Spain), assuming the heir is resident in the UK. Rates change. Not tax advice: confirm with a qualified adviser or the relevant tax authority.
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