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

ITR’s Indirect Tax Forum 2026 showed why harmonisation remains elusive, advisers must raise their game, and ‘everyone’s data is rubbish’
The firm’s board has reportedly asked Kevin Burrowes to continue until 2028 as the KPMG Australia scandal raises expectations of regulatory reform
A former Deloitte partner will lead the firm’s latest geographic expansion; in other news, Baker McKenzie added six tax lawyers to its partnership
The Fair Tax Mark now extends to domestic-only companies with turnover above €1m, with Thai travel operator Tripseed the first to be certified
A technology provider had to be educated on technical requirements by Joseph Ribkoff’s IT team, a tax manager at the company said
But businesses should remain flexible when choosing between internal and external resources to handle added ViDA complexity, ITR’s Indirect Tax forum also heard
Non-compliance from small businesses continues to account for most of the gap, HM Revenue and Customs revealed
The new managing director of R&D tax relief consultancy ForrestBrown tells ITR about his priorities for the business, where he’s focusing his time and what makes tax cool
PwC Australia’s response to its tax leaks scandal could give KPMG a useful case study, but so far there’s little sign of positive lessons learned
Tom Goldstein’s attempt to overturn his tax conviction was shot down; in other news, Deloitte promoted several tax partners in Italy
Gift this article