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

Tax teams are responding to usual client demand in the region, albeit with increased working from home flexibility, local sources indicate
A 120-plus-day delay to refunds would cost taxpayers almost $3bn in additional interest, the Cato Institute warned; plus indirect tax updates from February
The Office for Budget Responsibility’s pessimistic pillar two forecast accompanied the UK chancellor’s muted Spring Statement, dubbed ‘as dull as possible’ by one adviser
Digital tax reform is dissolving the old ‘temporal buffer’, forcing systems, institutions, and professionals to adapt as real-time reporting reshapes governance, capability, and compliance
Our first instalment features analysis of Deloitte’s landmark EMEA merger, Donald Trump’s Supreme Court tariff showdown and Venezuela’s tax evolution
While some believe it could have a positive effect on the wider advisory landscape, others argue that HMRC’s ‘red tape’ exercise won’t deter bad actors
The political optics of the US’s carve-out deal are poor, but as the Fair Tax Foundation’s Paul Monaghan writes, it preserves pillar two’s guiding ethos
The big four firm reportedly sent ‘threatening’ correspondence to Unity Advisory over its hiring of ex-PwC partners; plus tax recruitment news from the week
Tom Goldstein, who was represented by US law firm Munger, Tolles & Olson, denied wilfully cheating on his taxes and blamed errors on his staff
Multinationals face rising TP scrutiny as global rules diverge. As Daniel Moalusi argues, strong, consistent documentation is now essential to minimise audit risk and protect tax positions
Gift this article