Diana Castro is an associate in the Rio de Janeiro office of Tauil & Chequer Advogados in association with Mayer Brown and a member of the Tax practice, providing tax consultancy to international and domestic clients, advising in tax and customs issues.

Before joining the firm, Diana was a senior tax consultant at Deloitte Touche Tohmatsu, 2009-2013 and a law trainee at Petrobras Transporte S/A - Transpetro, 2008-2009 and at Castro, Barros, Sobral e Gomes Advogados, 2006-2007.

Spoken Languages

  • Portuguese
  • English
  • French


  • Advised companies from the oil & gas, mining, cement and retail industries on tax consultancy and compliance relating to their operations and transactions in Brazil.
  • Advised clients on Brazilian indirect taxes matters associated with their operations in Brazil and overseas and also advised clients on tax planning and tax compliance matters.
  • Advised oil & gas service companies on the reimbursement of the ICMS (state level VAT) applicable to the Special Customs Regime (REPETRO).


Fundação Getúlio Vargas (FGV/RJ), Further Education in Tax Law

Universidade Federal Fluminense (UFF), Bachelor of Law (JD equivalent)

Université Paris X Nanterre, Foreign Student

Universidade Estácio de Sá, BA, Accounting


  • Brazil