Ex-PwC auditor Deltour and two others face prison as ‘LuxLeaks’ trial gets underway

International Tax Review is part of Legal Benchmarking Limited, 1-2 Paris Garden, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement


Ex-PwC auditor Deltour and two others face prison as ‘LuxLeaks’ trial gets underway

LuxLeaks

Former PwC auditor Antoine Deltour stands trial in Luxembourg today on charges related to accessing a database of confidential corporate tax deals later published by a French journalist. The whistleblower is accused of theft and breach of professional secrecy, among other charges.

Deltour’s case promises to shine the spotlight on the tiny, central European country, burnishing Luxembourg’s reputation as a tax haven for multinationals. The PwC tax leaks involved about 28,000 companies including international giants like Disney, and PepsiCo. 

Luxembourg prosecutors are expected to argue that the company tax practices were legal and that the three Frenchmen in the court dock – Deltour, a second ex-PwC employee Raphael Halet, and journalist Edouard Perrin – are the real criminals.

The ‘LuxLeaks’ are one of the biggest financial leaks in history, pre-dating the ‘Panama Papers’ and causing shockwaves when the data was released on a French television programme in 2012 and later obtained by the International Consortium of Investigative Journalists.

Transparency

In the four years since 2012, authorities have reviewed more than 1,000 individual tax rulings: “Nearly 600 of them came from the LuxLeaks files,” EU Competition Commissioner Margrethe Vestager told the European Parliament’s Taxe 2 committee during an appearance in early April.

Deltour, speaking to his supporters in March, said the accused were assisting in the fight against “unfair tax practices”. Deltour is expected to face as long as five years in prison if convicted. 

Transparency International has called for Deltour to be protected, not prosecuted, saying the information disclosed was in the public interest. 

The leaks have already had an impact in financial circles. In December 2015, the Luxembourg Ministry of Finance released proposals relating to tax transparency and advance rulings in what appeared to be a strategic attempt to advertise Luxembourg’s willingness to fight tax evasion.

more across site & shared bottom lb ros

More from across our site

Nexdigm's Maulik Doshi and infer360 co-founder Sunil Agarwal dig deeper into their partnership and discuss why the tax technology industry is consolidating
Advisers won’t be short of work in a world of increased valuation disputes, documentation requirements and behavioural responses from clients seeking to protect their wealth
Jaydeep Menon explains how Frazier & Deeter built a specialist practice which helps UK start-ups expand into the US and why private equity backing is accelerating its ambitions
As joint audits, data sharing and pillar two reshape tax controversy, multinational groups can no longer afford to manage disputes one jurisdiction at a time
Brazil's tax system is being reshaped by VAT , pillar two and TP reform. Fallet explains why those changes convinced him to lead a new practice
The agreement with Daribatech, alongside recent high-profile investment in talent, suggests the firm is gearing up for a significant push in the region
Several factors have led to a steady transition of TP work away from traditional advisers and towards full-service law firms, DLA Piper’s new TP leader says
Julian Balson's departure from EY's Tier 1 tax controversy practice for lower-ranked Fieldfisher represents one of the more eye-catching UK hires of the year
Former IRS commissioner Danny Werfel argues that the biggest obstacle to AI adoption in tax is not technology, but trust, and introduces a practical AI risk framework to help
Howell takes a deep dive into how he led the landmark PepsiCo dispute, discusses the ATO's enforcement priorities, and emphasises KordaMentha's market ambitions
Gift this article