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Antonio Tomassini

Antonio Tomassini has the ability to understand client needs and find the best solutions.
Chambers Europe 2022

Antonio Tomassini is a tax lawyer, Partner, Chairman of the Client Committee and member of the global tax committee at DLA Piper. PhD and adjunct Professor in tax law, Coordinator of the scientific committee at STEP Italy and member of the scientific committee at Corriere tributario.

Chairman of the Board of auditors and OdV at BMW and Alphabet Italy.

Antonio specialises in international taxation, tax litigation, as well as investment funds, wealth planning and criminal tax law. He assists clients in international taxation and M&A matters other than before tax, European, Supreme Courts and tax authorities within investigation, settlements and rulings. Previously, he served as an officer for the Italian Tax Authorities, dealing with tax inspections and criminal investigations for taxation, customs and money laundering matters.

He is one of the major contributors for tax topics of the Italian "Il Sole 24 Ore" and author of more than one hundred between monographs and articles for the most renowned tax magazines (including 'Rassegna Tributaria', Rivista di Diritto Tributario', 'Rivista Trimestrale di Diritto Tributario', 'Dialoghi Tributari', 'Corriere Tributario', 'International Tax Review'). In 2022 published a book for Giuffrè on the "Tax aspects of Criptocurrencies, NFT and Metaverse". He is professor and coordinator of the master programs edited by Wolters Kluwer (tax law and criminal tax law), Bocconi (tax law and wealth planning) and Cattolica University (tax law) and spokesman in workshops and seminars.

Professional QualificationsAvvocato admitted to the Milan Bar


He has assisted large multinationals in some of the biggest tax litigation cases in recent years. Among these, the judgment before the Constitutional Court that led to the landmark decision that stopped, in M&A deals, the disputes for the purposes of registration tax based either on the abuse of the right principle or on a certain interpretation of art. 20 of the Consolidated Registration Tax Act.
  • Italian
  • English
  • French
  • University of Rome Tor Vergata, cum laude, Law degree
  • University of Trieste, cum laude, Economics and Financial Sciences degree
  • University of Trieste, Political Science degree

    University of Rome Tor Vergata, Ph.D. in Tax Law


  • Antonio is mentioned by The Legal 500 EMEA and ranked by Chambers Europe, Chambers Global and International Tax Review among the most reputable tax professionals in Italy: "He is prepared, pragmatic and a great problem solver" (Chambers Global)
  • In 2021 Antonio has been recognized as "Lawyer of the Year – International taxation" at the Legalcommunity Tax Awards and "Professional of the Year - Tax" at the TopLegal Awards. 


Antonio writes for Italy's main daily economic newspaper Il Sole 24 Ore and he is author of over one hundred monographs and articles for the most renewable domestic and international tax magazines.


Antonio regularly speaks at workshops and seminars on important tax topics.

Prior Experience

Before joining DLA Piper Antonio worked for a leading international law firm and spent several years working as an Officer for the Italian Tax Police.

Scientific Activity

Antonio is a professor and coordinator at IPSOA, Bocconi University and Cattolica University tax masters.

Memberships And Affiliations

  • STEP - The Society of Trust and Estate Practitioners