International Estate Planning in Spain — Cross-Border Guide (2026)

Why International Estate Planning Matters in Spain

Spain is one of the most popular destinations in Europe for foreign property ownership. British, American, German, French, Scandinavian, and Dutch nationals collectively own hundreds of thousands of properties across the country — from Costa del Sol apartments to rural Andalusian fincas.

The problem is that most of these property owners have not planned for what happens when they die. And when assets are located in one country but the owner is a national (or resident) of another, the legal consequences are dramatically more complex than a purely domestic estate.

Without proper international estate planning, your heirs may face:

• Conflicting succession laws. Spain has forced heirship rules; England does not. The US has state-by-state rules. Which law applies to your Spanish property?
• Double inheritance taxation. Spain may tax the inheritance, and so may your home country — on the same assets.
• Probate delays. Cross-border probate routinely takes 12 to 24 months, during which assets are frozen.
• Contradictory wills. A home-country will that revokes “all previous wills” can inadvertently destroy your Spanish will.
• Unnecessary costs. Sworn translations, apostilles, consular certificates, and dual legal representation add EUR 5,000 to EUR 15,000 to the process.

The good news: with proper planning, all of these problems are avoidable.

EU Succession Regulation (Brussels IV) — How It Affects You

EU Regulation 650/2012, commonly known as Brussels IV, is the single most important piece of legislation for international estate planning in Spain. It came into force on 17 August 2015 and applies to the succession of persons who die on or after that date.

The default rule

Brussels IV establishes that the law of the deceased’s habitual residence at the time of death governs the entire succession — all assets, everywhere in the participating EU countries. If you are a British retiree living in Marbella, the default rule is that Spanish law (including forced heirship) governs your entire estate.

The escape clause: professio juris

Brussels IV allows you to choose the law of your nationality to govern your succession, overriding the habitual residence default. This is done through a professio juris clause included in your will.

Nationality	Default law (without professio juris)	Chosen law (with professio juris)	Forced heirship applies?
British (England/Wales)	Spanish law (if resident in Spain)	English law	No — full testamentary freedom
American (most states)	Spanish law (if resident in Spain)	US state law	No (except Louisiana)
French	Spanish law (if resident in Spain)	French law	Yes (French réserve héréditaire)
German	Spanish law (if resident in Spain)	German law	Yes (German Pflichtteil)
Dutch	Spanish law (if resident in Spain)	Dutch law	Yes (Dutch legitieme portie)
Swedish/Norwegian	Spanish law (if resident in Spain)	Swedish/Norwegian law	Yes (Scandinavian forced shares)

Key point for non-EU nationals

Brussels IV applies to the succession of anyone who dies habitually resident in a participating EU member state — regardless of their nationality. This means British (post-Brexit), American, Canadian, Australian, and other non-EU nationals benefit from the professio juris option when they reside in Spain.

Double Taxation Treaties for Inheritance

One of the biggest financial risks in cross-border estates is being taxed twice on the same inheritance — once in Spain and once in the heir’s or deceased’s home country.

Spain’s inheritance tax treaty network

Spain has very few bilateral inheritance tax treaties. The most notable are:

• Spain – France: Convention of 8 January 1963 (limited scope, covers real estate and certain movable assets)
• Spain – Sweden: Convention of 16 June 1963
• Spain – Greece: Convention of 14 February 1953

Critically, Spain has NO inheritance tax treaty with the UK or the US. This means double taxation is a real risk for British and American nationals with Spanish assets.

How to mitigate double taxation without a treaty

• Unilateral relief. Spain allows a credit for foreign inheritance tax paid on the same assets (Article 23 of the Inheritance Tax Law). The UK similarly allows credit for foreign tax paid. However, the mechanics are complex and must be properly documented.
• Tax planning through structure. The order and timing of inheritance acceptance, the choice of applicable succession law, and the structure of ownership can significantly affect the total tax burden.
• Regional Spanish tax benefits. Inheritance tax in Spain is regional. Some communities (Madrid, Andalusia, Valencia, Murcia) offer 99% reductions for close relatives. The region where the deceased was resident — or where the assets are located — determines the applicable rates.

For a detailed breakdown of regional rates, see our Inheritance Tax Laws in Spain guide.

Planning Strategies for UK Citizens with Spanish Assets

UK nationals are the largest group of foreign property owners in Spain. Post-Brexit, the succession landscape has become more complex but also more navigable with proper advice.

Essential steps for UK citizens:

1. Make a Spanish will with a professio juris clause choosing English (or Scottish/Northern Irish) law. This overrides Spanish forced heirship and gives you full testamentary freedom.
2. Coordinate with your UK will. Ensure your UK will explicitly excludes Spanish assets, and your Spanish will explicitly excludes non-Spanish assets. Neither should contain a blanket revocation clause.
3. Consider the IHT implications. UK Inheritance Tax (IHT) applies to worldwide assets of UK-domiciled individuals. Spanish inheritance tax also applies to Spanish assets. You can claim credit in one jurisdiction for tax paid in the other, but the paperwork must be meticulous.
4. Review your domicile status. UK IHT depends on domicile, not residence. Even if you have lived in Spain for 20 years, you may still be UK-domiciled for tax purposes (especially if you maintain UK ties and intend to return).
5. Plan for the nil-rate band. UK IHT has a GBP 325,000 nil-rate band (plus GBP 175,000 residence nil-rate band if conditions are met). Structuring your Spanish will to maximise these allowances requires coordinated UK-Spain advice.

Planning Strategies for US Citizens with Spanish Assets

US estate planning in Spain presents unique challenges because the US uses a federal/state dual system and is not party to Brussels IV.

Essential steps for US citizens:

1. Include a professio juris clause in your Spanish will choosing the law of your US state. Spain recognises this even though the US is not an EU member.
2. Understand the US estate tax. The US taxes the worldwide estate of US citizens and residents. The federal estate tax exemption is USD 13.61 million (2024), but this is set to decrease to approximately USD 7 million after 2025 unless Congress acts. Spanish assets are included in the US taxable estate.
3. File Form 706 if required. US executors must include Spanish property in the Form 706 estate tax return. A credit is available for Spanish inheritance tax paid (under IRC Section 2014), but there is no treaty to simplify the process.
4. Consider the community property issue. If you are married and reside in Spain, the Spanish community property regime (gananciales) may apply to assets acquired during the marriage unless you have a prenuptial agreement (capitulaciones matrimoniales). This affects both Spanish succession and US estate tax calculations.
5. Appoint a US-qualified executor for your US assets and a separate Spanish executor for your Spanish assets. Cross-border executorship creates significant practical and legal complications.

Avoiding Double Inheritance Tax

The absence of a Spain-UK or Spain-US inheritance tax treaty does not mean double taxation is inevitable. With proper planning, you can minimise or eliminate it.

Strategies that work:

Strategy	How it works	Best for
Unilateral tax credit	Claim credit in UK/US for Spanish tax paid (and vice versa)	All cross-border estates
Regional Spanish benefits	Choose residency in a low-tax region (Madrid, Andalusia) for up to 99% relief	Retirees and residents
Lifetime gifts (donaciones)	Transfer assets during your lifetime at potentially lower gift tax rates	Depends on regional rates
Corporate holding structure	Hold Spanish property through a company (SL) for succession simplicity	High-value estates, multiple heirs
Life insurance	Spanish life insurance policies receive favourable tax treatment for beneficiaries	Supplementary planning

Warning: Some structures that work in one jurisdiction create problems in another. For example, holding property through a UK trust may trigger adverse Spanish tax consequences. Always get coordinated advice from both jurisdictions.

The Role of a Spanish Lawyer in Cross-Border Planning

International estate planning is not a DIY project. The interaction between Spanish succession law, EU regulations, home-country tax rules, and regional Spanish tax regimes creates a matrix of complexity that requires specialist knowledge.

A qualified Spanish lawyer experienced in cross-border estates will:

• Audit your current position. Review your assets, your existing wills, your residence status, your family structure, and your tax obligations in both jurisdictions.
• Draft a Spanish will with the correct choice-of-law clause, scope limitation, and provisions that work alongside your home-country will.
• Coordinate with your home-country lawyers. We regularly work directly with UK solicitors, US attorneys, and European notaries to ensure both wills are consistent and complementary.
• Advise on tax optimisation. Identify the most favourable regional Spanish tax regime, applicable allowances, and cross-border credit mechanisms.
• Prepare for the future. Set up structures that remain valid through changes in residence, marital status, or asset portfolio.

At CostaLuz Lawyers, cross-border estate planning is a core practice area. We advise British, American, and European clients daily on succession matters involving Spanish assets.

Common Mistakes in International Estate Planning

After two decades of handling cross-border estates, these are the mistakes we see most frequently — and the ones with the most costly consequences:

1. No Spanish will at all. This is the single most common and most expensive mistake. Your heirs face 12 to 24 months of probate and EUR 5,000+ in additional costs.
2. Blanket revocation clauses. A UK will that says “I revoke all previous wills” destroys your Spanish will. Both wills must use targeted, jurisdiction-specific revocation language.
3. Ignoring forced heirship. British and American clients who assume they can leave everything to their spouse are shocked to discover that Spanish law reserves two-thirds of the estate for children. The solution: a professio juris clause. But it must be in the will before death.
4. Assuming joint ownership means automatic transfer. Spanish proindiviso (co-ownership) does not include a right of survivorship. The deceased’s share passes through their estate, not directly to the surviving co-owner.
5. Not claiming tax credits. Heirs who pay inheritance tax in Spain and the UK (or US) without claiming unilateral relief end up paying significantly more than necessary.
6. Using a trust to hold Spanish property. Anglo-Saxon trusts are not recognised in Spain and can create catastrophic tax consequences. If you already have a trust holding Spanish assets, seek specialist advice immediately.
7. Outdated wills. A will drafted before Brussels IV (August 2015) may not contain a professio juris clause. A will drafted before Brexit may not account for the UK’s changed status. Regular reviews are essential.
8. DIY or generic online wills. Generic will templates do not account for Spanish legal requirements, regional variations, or cross-border coordination. The EUR 500 saved on legal fees can cost your heirs EUR 10,000+.

Frequently Asked Questions

Do I need a separate Spanish will if I own property in Spain?

Yes, strongly recommended. A Spanish will covering only your Spanish assets is the most effective way to ensure smooth, fast, and cost-effective probate in Spain. It works alongside — not instead of — your home-country will.

What is Brussels IV and does it apply to me?

Brussels IV (EU Regulation 650/2012) governs cross-border succession in the EU. It applies to anyone who dies habitually resident in a participating EU country, regardless of nationality. It allows you to choose your national law to govern your succession through a professio juris clause.

Can I avoid Spanish forced heirship as a British citizen?

Yes. By including a professio juris clause in your Spanish will choosing English law, you override Spanish forced heirship rules completely. English law gives you full testamentary freedom.

Will my heirs pay inheritance tax in both Spain and the UK?

Potentially, but double taxation can be mitigated. Spain allows a credit for foreign tax paid, and the UK offers similar relief. Additionally, Spanish regional tax benefits (especially in Andalusia and Madrid) can reduce or eliminate the Spanish tax for close relatives.

What happens if I have a property in Spain but no Spanish will?

Your foreign will can technically be used, but it must be apostilled, translated by a sworn translator, and recognised by the Spanish authorities. The process takes 6 to 24 months and costs EUR 3,000 to EUR 8,000 more than probate with a Spanish will. During this time, the property and bank accounts are frozen.

Can I use a UK trust to hold Spanish property?

This is legally risky. Spain does not recognise trusts and may treat the trust as a taxable entity or attribute the property directly to the settlor or beneficiaries for tax purposes. If you already have a trust holding Spanish assets, seek specialist advice to understand your exposure.

How do US estate taxes interact with Spanish inheritance tax?

US citizens and residents are subject to federal estate tax on worldwide assets. Spanish property is included in the taxable estate. A credit is available for Spanish tax paid (IRC Section 2014), but there is no bilateral treaty to simplify the process. Proper documentation and coordinated US-Spain legal advice are essential.

How often should I review my international estate plan?

At minimum, every 3 to 5 years, or whenever you: buy or sell property, change residence, marry or divorce, have children or grandchildren, or when significant tax law changes occur in either jurisdiction.

Next Steps

International estate planning is not something you do once and forget. It requires periodic review and coordinated advice across jurisdictions. But the foundation is simple: a properly drafted Spanish will, a coordinated home-country will, and a clear understanding of the tax landscape.

At CostaLuz Lawyers, we specialise in cross-border estate planning for British, American, and European clients with assets in Spain. We coordinate directly with your home-country lawyers to ensure a seamless plan that protects your family.

Reviewed by María Luisa de Castro, CEO at CostaLuz Lawyers — Updated 2026

This is general information, not definitive legal advice — every case requires individual analysis.