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

The recent spree of firm mergers and acquisitions proves that geographic scale is the name of the game
The big four spin-off firm becomes Taxand’s second UK member; in other news, Haynes Boone launched a UK tax practice
Stephanie Pantelidaki’s economic expertise will give Norton Rose Fulbright’s other teams ‘extra firepower,’ she says
Mada has opened simultaneously in Paris and Dubai with an eight-lawyer team from Trinity International
PwC will continue to provide indirect tax services as part of the deal; in other news, the CJEU addressed the VAT treatment of TP adjustments
The arrival of Renan Ozturk and his team from A&M Tax introduces a unique proposition within the Middle East legal market, the firm said
The deal, reportedly worth $400m, will add Svalner Atlas’s 50-partner Nordic and Benelux presence to Ryan’s rapidly growing global footprint
The combined firm, which comprises over 1,400 lawyers, will boast robust tax practices in both the UK and US
Cascading tax reform, bullish foreign investment and vigorous TP audits have made Italy’s tax advisory market dynamic and stiffly competitive
As ITR data reveals that 2025 saw more than double the amount of private client hires than 2024, it seems firms are jostling for position
Gift this article