Supreme Court: The cost of new construction is not updated for the purposes of Stamp Duty Tax, even if the deed is granted years later

According to the court, the tax regulations are clear in establishing that the taxable base of the Stamp Duty Tax is the real cost value of the new construction that is declared, without mentioning the market value and without providing for update coefficients. In its judgment of 18 May 2026 (appeal 8043/2023), the Supreme Court […]

Domicile entries and tax inspection: the keys to the most recent case law of the Supreme Court

The Supreme Court stresses that the prior information that must be given to the taxpayer on his rights and the terms and scope of the action is not satisfied with the delivery of the informative annex that usually accompanies the communication of initiation of the inspection procedure itself. The Supreme Court has recently issued three […]

The Supreme Court reinforces the principle of legitimate expectations

The court argues that, although the CJEU has ruled that the customs authorities of the country of import are not obliged to accept certificates of origin beyond the period of validity provided for in customs regulations, they must accept such certificates if they have previously exercised their powers of control. The tax authorities have repeatedly […]

The CJEU strengthens control over the refusal of national judicial bodies to refer questions for a preliminary ruling

The court states that courts of last instance must give adequate reasons for their decision not to refer a question for a preliminary ruling, even in the absence of an express request from the parties. In its recent judgment of 24 March 2026 (Case C-767/23), the Court of Justice of the European Union (CJEU) examines […]

The granting of tax benefits based on tax residence violates the principle of equality

The Constitutional Court thus concludes in relation to the application of the reduced rate of the tax on documented legal acts that Galician legislation regulates for mutual guarantee companies with registered office in the territory of the autonomous community of Galicia, but its conclusions (supported by the jurisprudence of the CJEU) are undoubtedly projected on […]

Taxation of royalties: the Supreme Court gives primacy to the Directive over agreements

In a recent and controversial judgment, the Supreme Court affirms that when the  Interest and Royalties Directive cannot be applied because the recipient of the royalties is not the “beneficial owner”, the withholding tax rate established in the Spanish domestic non-resident income tax regulations must be applied, rather than the reduced rate of the corresponding […]

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