Inheritance tax in Spain: Regulations on international succession

Inheritance tax in Spain remains one of the most important cross-border tax issues for foreign families with property, savings, or other assets in Spain.

In 2026, the legal framework is shaped by Regulation (EU) No 650/2012 on succession, Spain’s Inheritance and Gift Tax Act, and the regional tax rules of the autonomous community that has authority over the estate.

If you live abroad and inherit Spanish assets, the first question is not only who receives what, but also which law governs the succession, where the tax must be filed, and whether regional relief can reduce the final bill.

That is especially relevant for people who are also dealing with residency in Spain, Spanish wealth tax, or broader UK–Spain double taxation planning.

Under Regulation (EU) No 650/2012, the general rule is that the law of the deceased’s habitual residence at death governs the succession.

The regulation also allows a person to choose the law of the nationality of their Will.

In practice, that means a British, Irish, or American owner of Spanish property may still be able to elect their national law for succession purposes, but that election does not remove the Spanish tax charge on Spanish assets.

That distinction matters. Succession law decides who inherits.

Tax law decides what must be paid.

If the estate includes Spanish real estate, bank accounts, or other taxable Spanish assets, the Spanish tax analysis still has to be done carefully.

This is also where related planning issues, such as legal fees when buying Spanish property and Spain’s regional property taxes, often connect with inheritance planning later on.

Who pays inheritance tax in Spain?

Spain taxes acquisitions by inheritance received by individuals.

The core rule in the state inheritance tax law is simple: if you inherit taxable Spanish assets, Spanish inheritance tax can apply whether you are resident in Spain or not.

The tricky part is determining which administration’s rules and benefits apply.

How the numbers compare in 2026

This is why a non-resident inheriting in Valencia may face a very different outcome from someone inheriting in another part of Spain.

The old version’s 50% Valencian framing is no longer the best 2026 reference point.

For many direct-line cases, the current regional regime is much more favourable.

Deadlines and procedure

Timing matters.

The Spanish tax filing deadline is usually six months from death, and the Ministry of Justice’s online guidance for the Certificate of Last Wills states that the application cannot be submitted until 15 working days have passed.

That often means heirs need to begin document collection immediately, especially if they are abroad and need apostilles or powers of attorney.

Late filing is not a minor issue.

Spain’s General Tax Law provides for surcharges and interest on late tax regularisations, so delay can turn an already complicated estate into a more expensive one.

This is also why many clients find it useful to keep one eye on Spanish tax deadlines generally, not only on inheritance matters.

UK families need an extra 2026 update

For UK-connected estates, the 2026 position is not the same as it was a few years ago.

HMRC’s current guidance explains that, from 6 April 2025, overseas assets may fall within UK inheritance tax if the deceased was a long-term UK resident.

HMRC also confirms that the current inheritance tax thresholds remain at £325,000 for the nil-rate band and £175,000 for the residence nil-rate band.

Just as important, the UK–Spain tax treaty published by HMRC covers income, corporation, capital gains and certain other taxes, but not inheritance tax.

HMRC’s inheritance tax double taxation relief guidance explains that relief may come from a treaty or, in some cases, unilateral relief.

In other words, families with Spain–UK estates should treat double taxation as a planning issue from the start, not as an afterthought.

What good planning looks like

The practical steps are straightforward, even if the legal analysis is not.

A Spanish will can reduce friction.

Asset values should be reviewed before death, where possible.

The right regional rules must be identified early.

And where the estate includes Spanish real estate, business assets, or cross-border income streams, inheritance planning should be coordinated with wider tax work such as reducing your tax burden in Spain, US and Spanish tax implications, or international contracts in Spain if family business interests are involved.