Trust Taxation · Spain · Castilla y León
Updated April 2025 · By International Inheritance Spain · Jacob Salama, Colegiado n.º 11.294
Spain does not recognise the trust as a legal concept. The Spanish Tax Authority (AEAT) treats all foreign trusts as fiscally transparent — meaning it looks through the trust structure and attributes assets and income to the settlor or beneficiary directly. This is established doctrine confirmed by multiple DGT binding consultations (V1229-12, V2083-12, V3013-13, V1948-16 and V2375-18).
When a trust beneficiary is a Spanish tax resident in Castilla y León, the regional ISD rules of Castilla y León apply to any trust distribution classified as a Spanish taxable event.
The classification of a trust distribution as inheritance or donation has fundamental tax consequences:
The region competent to apply its ISD rules is determined by where the trust beneficiary is habitually resident in Spain — in this case, Castilla y León.
Reductions for Direct Relatives in Castilla y León
99% bonificación for Group I heirs (children under 21, €60,000 additional reduction per minor). Group II (direct relatives): 99% bonificación. Very favourable for direct relatives.
Castilla y León reformed its ISD rules to offer near-zero rates for Group I and II heirs, bringing it in line with Madrid and Andalucía for direct relative beneficiaries.
Near-zero for Group I and II (99% bonificación). National scale for collateral and non-relatives.
Significant reductions for donations to Group I and II, though less comprehensive than Andalucía and Madrid.
A UK discretionary trust distributes €400,000 to a beneficiary (child of the settlor) who is a Spanish tax resident in Castilla y León, following the settlor's death. AEAT classifies this as an inheritance (sucesión).
The competent authority is Castilla y León. The beneficiary must file ISD within 6 months of the settlor's death. The applicable rates and reductions are those of Castilla y León: Near-zero for Group I and II (99% bonificación). National scale for collateral and non-relatives.
The beneficiary must also confirm there is no applicable double taxation treaty between Spain and the country of the trust's settlor (there is no UK-Spain, US-Spain or NL-Spain ISD treaty). If the settlor was German, the 1966 Germany-Spain treaty may credit German inheritance tax paid against Spanish ISD.
The same UK discretionary trust makes a €200,000 lifetime distribution to the same beneficiary in Castilla y León, during the settlor's lifetime. AEAT classifies this as a donation (donación).
The beneficiary must file ISD as donación within 30 days of receiving the distribution. The applicable rates are those for donations in Castilla y León: Significant reductions for donations to Group I and II, though less comprehensive than Andalucía and Madrid.
Any Spanish tax resident who is a beneficiary of a foreign trust where the underlying assets include bank accounts, investment portfolios or real estate exceeding €50,000 per category must declare those assets on Modelo 720. This is an annual obligation (due by 31 March for the previous year).
Following the European Court of Justice ruling in Case C-788/19 (2022) and the subsequent Spanish legislative reform (January 2023), the sanctions for failing to file Modelo 720 are now €200 per item (instead of the previous 150% surcharge which was found disproportionate).
The Spanish tax treatment of foreign trust distributions in Castilla y León is complex and fact-specific. The correct classification of a distribution as inheritance or donation, the applicable reductions, the Modelo 720 obligations, and the interaction with any applicable double taxation rules all depend on the specific trust structure, the settlor's nationality and domicile, and the beneficiary's personal circumstances.
A specialist legal opinion before:
...is strongly recommended. The cost of a legal opinion is a fraction of the potential tax liability and penalties that can arise from an uninformed approach.
We advise UK and US families on the Spanish tax treatment of their trust structures. A legal opinion before you become a Spanish tax resident can save you very significant sums and legal complications.