Expert in defending taxpayers’ interests in all types of proceedings with the tax authorities, and in designing strategies and leading the defense against tax boards, the judicial review courts, the Constitutional Court and the European Court of Human Rights.

Alfonso del Castillo specializes in appeals to the Supreme Court and in particularly complex procedural litigation.

He lectures on tax procedures in various master programs and training courses. He is co-organizer of the FAE-Cuatrecasas Tax Forum.


  • Preparing for doctorate (cassation appeal in taxation)
    Universitat de Barcelona

    Master in Tax Consultancy and Management
    ESADE Business & Law School, Barcelona, 2008

    Public competitive examination for admission to the Body of Counsel for the State

    Bachelor of Laws
    Universidad de La Rioja, Spain, 1997

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