Tiago Cassiano Neves

Tiago Cassiano Neves - Garrigues

Practice Area/Industry:

Languages Known:

  • English
  • Portuguese
  • Spanish


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Tiago Cassiano Neves



Partner of the Tax Department – tax advice with emphasis on direct taxation – at  Garrigues Portugal (from 2007). Specialised in international tax planning (inbound/outbound) and advises clients on international structuring and disputes, M&A, restructuring and financial products.

During 2007 Tax Lawyer with the Tax department in the Amsterdam office VMW TAXAND.

Senior Research Associate at the IBFD. Manager of a key corporate tax reform project in Spain (2005-2007). Teaching assistant at the International Tax Centre (2004-2005). 

Between 2001 and 2004 consultant of Deloitte & Touche - formerly Andersen in Lisbon.

Trainee lawyer at Avillez Pereira & Associados (1999-2000).

Between 1999 and 2000 worked on the Portuguese European Union Presidency.

Frequent speaker on international tax matters at conferences and member of the International Fiscal Association and co-founder of the IFA Young Committee (YIN). 

Portuguese Bar Association.

Academic background:

Advanced LL.M Program in International Taxation, Leiden (Netherlands).

Degree in Law, Universidade Católica Portuguesa.


Speaker on international tax matters at conferences and several publications namely:

  • Exploring the Boundaries of the Application of Article 10(5) of the OECD Model Intertax, 2007 (co-author Eduardo Arruda Madeira)
  • Budget Bill targets private Equity Venture Capital Investors, Tax Notes International, November 2007 (co-author Paulo Núncio)
  • Government eases rules on applying Tax Treaties, Tax Notes International, January 2008 (co-author Paulo Núncio)
  • Portuguese swap agreements change raises Treaty issues, Tax Notes International, February 2008  (co-author Paulo Núncio)
  • Attribution of Profits to an Agency PE: finding a middle ground, LLM Theseis
  • Book: Taxation in Brazil: an overview, IBFD Latin America Tax Handbook, 2006
  • Book: OECD Model Tax Convention on Income and on Capital and Key Tax Features, IBFD Publications, 2006
  • Lecture - Case Studies on International Tax and use of Holding companies in Europe, November 2007, São Paulo (Brazil)
  • Lecture - Corporate Tax Selected Countries, LLM European Business Law (PALLAS) - December 2007, University of Essex (UK)
  • Lecture - Introduction to tax treaties and taxation of passive income, Master-Course IIR Portugal, May 2008, Lisbon
  • Lecture - The concept of residence for tax treaty purposes, International Tax Center Leiden Summer Course, July 2008, Lieden (Netherlands)