Spanish Inheritance Tax (Impuesto de Sucesiones y Donaciones — ISD) is the single most variable tax in Spain. The same inheritance can trigger €0 in Andalucía and €60,000 in Asturias. The difference is regional regulation, kinship group, and whether you correctly claim the bonifications.
This 2026 guide covers everything a non-resident heir needs to know: who pays, how much, how to claim regional reductions, what Modelo 650 is, and worked examples for the most common scenarios.
Who pays Spanish Inheritance Tax?
The heir pays the tax (not the deceased’s estate, unlike US federal estate tax). One Modelo 650 per heir. Each heir files separately on their share.
You pay Spanish Inheritance Tax if:
- You are a Spanish tax resident inheriting anywhere (worldwide assets, with double-tax credits).
- You are a non-resident inheriting Spanish-located assets (property, bank accounts, shares of Spanish companies).
How the tax is calculated
Step-by-step:
- Gross taxable estate = market value of inherited assets (using the “valor de referencia” cadastral as minimum for property).
- Less liabilities = pending mortgages, debts at date of death, certain expenses.
- Plus 3% ajuar doméstico (household goods notional value) — can be reduced or eliminated with proper documentation.
- Equals taxable base.
- Less reductions:
- Kinship reduction by group (see below).
- Main home reduction (95%, up to €1M for direct family).
- Family business reduction (95%).
- Life insurance reduction (€9,195).
- Plus any regional-specific reductions.
- Equals net taxable base.
- Apply progressive tax rate (state scale: 7.65% to 34%, modulated by regional rules).
- Apply multiplier coefficient based on the heir’s pre-existing wealth and kinship group (1.0 to 2.4).
- Apply regional bonification on the resulting tax (e.g. 99% in Andalucía/Madrid/Valencia for direct family).
- Equals tax due.
Kinship groups
| Group | Heirs included | Standard reduction |
|---|---|---|
| Group I | Direct descendants under 21 | €15,956 + €3,990 per year under 21 (max €47,858) |
| Group II | Direct descendants ≥21, spouse, ascendants (parents, grandparents) | €15,956 |
| Group III | Siblings, uncles/aunts, nephews/nieces, in-laws by blood, ascendants/descendants by affinity | €7,993 |
| Group IV | Cousins and more distant, unrelated | €0 — and a multiplier of 2.0 |
Plus regional reductions on top — these can be much larger.
Regional bonifications 2026
This is where it gets interesting:
| Region | Group I & II bonification | Group III |
|---|---|---|
| Andalucía | 99% on the tax | — |
| Madrid | 99% on the tax | 25% (since 2023) |
| Valencia | 99% on the tax (since 2024) | — |
| Murcia | 99% on the tax | — |
| Cantabria | 99% on the tax | — |
| Galicia | Reductions instead of bonification (effective rate close to 0% for direct family) | — |
| Castilla y León | 99% bonification | — |
| Asturias | Reductions but full tax for higher amounts | — |
| Cataluña | Limited bonifications, effective rate 7%-32% for direct family on larger inheritances | — |
| Aragón | Various reductions, less generous | — |
| Extremadura | 99% bonification | — |
| Baleares | 99% bonification (since 2023) | — |
| Canarias | 99.9% bonification (since 2023) | — |
| Castilla-La Mancha | Reductions, effective rate close to 0 for direct family | — |
| La Rioja | 99% bonification | — |
| Navarra (foral) | 0%-1% for direct family | — |
| Basque Country (foral) | 1.5% effective for spouses/descendants on first €400K | — |
Bottom line: for direct family heirs, most Spanish regions now have 99%+ bonifications. The exceptions where the tax is meaningful: Cataluña, Aragón, parts of Asturias, and very large estates in any region.
State vs. regional regulation — the non-resident question
Until 2014, non-residents could only apply the state regulation (no regional bonifications). The European Court of Justice ruled this discriminatory in case C-127/12. Since then:
- EU/EEA residents: can apply the regional regulation of the autonomous community where the asset is located, claiming all regional bonifications.
- UK residents (post-Brexit): after Spanish Supreme Court rulings (2018-2022), also entitled to regional bonifications.
- Third-country residents (USA, Canada, Australia, Latin America): can apply regional rules where the asset is located, based on subsequent rulings extending the principle of non-discrimination.
You must claim it expressly when filing Modelo 650. Don’t expect the tax authority to apply it automatically.
Worked examples
Example 1 — UK resident inheriting €400,000 villa in Marbella
- Heir: adult daughter (Group II), UK resident.
- Estate: villa in Marbella, value €400,000.
- Kinship reduction: €15,956 + Andalucía’s enhanced reduction of up to €1M for direct family → fully covered.
- Net taxable base: €0.
- Tax: €0. Modelo 650 must still be filed.
Example 2 — German resident inheriting €1.5M villa in La Zagaleta
- Heir: adult son (Group II), German resident.
- Estate: villa in La Zagaleta (Marbella), value €1.5M.
- Kinship reduction: €15,956 + Andalucía direct-family reduction (up to €1M).
- Main home reduction: 95% on €500,000 (up to €1M cap), if applicable = €475,000.
- Net taxable base: ~€10,000 after all reductions.
- State tax on that base: ~€800.
- Andalucía 99% bonification: tax due ~€8.
- Effective tax: ~€8 on a €1.5M inheritance.
Example 3 — Spanish-resident son inheriting €600,000 from non-resident father (UK)
- Heir: Spanish resident, Group II.
- Estate: €600,000 (UK + Spanish assets).
- Spanish resident pays tax on worldwide inheritance.
- Kinship reduction: €15,956 + applicable regional reduction.
- Andalucía 99% bonification (if heir resides in Andalucía).
- Effective tax: ~€500-€800.
- Plus relief for any UK Inheritance Tax paid by the deceased’s estate (double-tax credit).
Example 4 — Non-resident inheriting €350,000 in Catalonia
- Heir: UK resident, Group II.
- Estate: apartment in Barcelona, €350,000.
- Catalonia: kinship reduction €100,000 + 95% main-home reduction.
- Net taxable base: ~€80,000.
- State scale + Catalan modulation: ~€7,500-€12,000 tax.
- Catalonia bonification: limited (depends on size). Net tax: ~€5,000-€10,000.
- Catalonia is the most expensive region for direct-family inheritances in this range.
Modelo 650 — the form
- One Modelo 650 per heir, per region of competence.
- Filed before the autonomous tax authority of the deceased’s habitual residence (or where the asset is located, for non-residents).
- Includes: heir’s NIE, deceased’s data, full inventory with valuations, applicable reductions, calculation, and proof of payment.
- Filed online, by post, or in person.
- Deadline: 6 months from death, extendable for another 6 if you submit the prórroga request within the first 6.
Penalties for late filing
Filed within 6 months: no surcharge.
Filed in months 7-12 (with prórroga): no surcharge.
Filed in months 7-9 without prórroga: 5% surcharge.
Filed in months 10-12 without prórroga: 10% surcharge.
Filed in months 13-18: 15% surcharge.
Filed after 18 months: 20% surcharge.
Plus interest at the legal rate (~3.75% in 2026) on the tax owed for the period of delay.
Frequently asked questions
Is Spanish Inheritance Tax deductible against UK Inheritance Tax?
Spain has tax treaties with the UK (and many other countries) that provide relief from double taxation. The Spanish tax paid on Spanish assets is generally creditable against any UK IHT due on the same assets. The treaty mechanics are technical — we coordinate with your UK accountant when needed.
What if I’m not in any kinship group? (e.g., the deceased was a friend)
Group IV applies. Kinship reduction is €0, the multiplier coefficient is 2.0, and you pay the full state scale (7.65%-34%). For a €100,000 inheritance from a friend, expect ~€20,000-€30,000 in tax with no regional bonification typically available.
What if the deceased had a Spanish bank account but no property?
Bank accounts are Spanish-located assets and trigger Spanish Inheritance Tax filing. You file Modelo 650 with the same procedure. The bank will not release funds without proof of tax filing/payment.
Can I pay in instalments?
Yes. Spain allows deferral and instalment payments under various conditions (notarial undertaking, real-asset guarantee). Common for large estates with cash flow issues.
What is “valor de referencia” and why does it matter?
Since 2022, the cadastral office publishes a “valor de referencia” (reference value) for each property. It functions as the minimum value for tax calculation. If you declare less, the tax authority can re-assess upward. We always use it as the floor and document any value above it with appraisals.
Can I challenge the tax assessment?
Yes. Spain has a formal appeals procedure: first level (Tribunal Económico-Administrativo Regional, TEAR), second (Tribunal Económico-Administrativo Central, TEAC), then the courts. Common grounds: incorrect valuation, missed reductions, computation errors. Time-consuming but often successful for clear errors.
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