MAIO Legal

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We combine the technical skills with the practical exercise and the sense of anticipation. We provide comprehensive legal counselling services on the subject of national and international tax matters to Spanish and foreign companies, multi-national groups and natural persons.

Many of our members are renown tax experts on a national level, active members of AEDAF (Spanish Association of Tax Advisors) and have published numerous articles on the technical aspects and also teach.

Our results speak for themselves in the area of procedures and tax appeals



As tax lawyers, we advise our clients on all aspects of tax law with the objective of supporting them in the development of their businesses while always maintaining a relationship based on mutual confidence and direct and permanent contact.

Our professional experience with tax matters comprises the following areas in particular:

‒  Tax Planning.

‒  Acquisitions and sale of companies, business reorganization operations

‒  State, autonomous region and local taxes, direct and indirect taxation

‒  Counselling on international taxation

‒  Tax procedures of all types (inspections, claims and appeals in all administrative and judicial instances)

‒   Taxation of the family business

‒   Taxation of entities in the public sector and non-profit entities


‒   Participation in the pending infraction challenge lodged by Spain in the European Union over the 720 Form.

‒   Our numerous legal successes including various in the Supreme Court in matters with general tax implications.


‒   Recognized in Chambers & Partners as a distinguished firm in the area of European Tax

‒   Ignacio Arráez has been recognized as a distinguished lawyer in the European Tax area in the directory, Chambers & Partners

‒   Ignacio Arráez (Madrid), Javier Gómez Taboada (Vigo) and Ignacio Martínez Núñez (Seville) have been recognized as distinguished lawyers by the directory, Best Lawyers.