Flávia Leardini has been advising domestic and international clients for almost 20 years on advisory and contentious matters in economic and corporate criminal law. Her practice focuses on highly complex cases involving tax crimes, corruption, capital markets offences and money laundering.
She gained international experience through a placement in Washington, D.C. (USA) at a firm specialising in transnational criminal litigation and corporate investigations, where she took part in the defence of Brazilian and foreign individuals and corporations before the U.S. Department of Justice.
Flávia is co-author of "Da criminalização do não recolhimento de impostos indiretos às sanções ao devedor contumaz", which examines the transition from the criminalisation of non-payment of indirect taxes to the sanctioning regime applicable to habitual tax debtors (devedor contumaz) under Supplementary Law No. 225/2026.
She is recommended by Chambers Brazil and The Legal 500, listed in Análise Advocacia Mulher, and was named by GIR among the "40 under 40" investigations specialists worldwide in 2024.
Flávia's professional and academic activities reflect the breadth of her engagement with the field. She serves as Vice President of the 4th Disciplinary Panel of the Ethics and Disciplinary Tribunal of the São Paulo Bar Association (OAB/SP) for the 2025–2026 term, and as Director of Institutional Affairs at the Institute of Lawyers of São Paulo (IASP) for the 2025–2028 term. She is a member of the IBA Business Crime and Criminal Law Committee, having spoken at the 2024 and 2025 editions of the Transnational Crime Conference). In 2026, she joined the panel "Enforcement by Non-US Regulators" at the American Bar Association (ABA), examining recent cases and cross-border enforcement trends in Brazil, the Netherlands, France and the UK. She is also a researcher in tax crimes and tax reform at Fundação Getulio Vargas Law School (FGV/SP).