Antoine Deltour: LuxLeaks whistleblower speaks out

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


Antoine Deltour: LuxLeaks whistleblower speaks out

Deltour-Antoine-c

Antoine Deltour, one of the two whistleblowers at the centre of the LuxLeaks scandal, said that he had “mixed feelings” after his conviction for leaking confidential information was upheld, but his sentence was reduced.

Luxembourg’s Cite Judiciare upheld an earlier judgment against the former PwC employee, as well as his ex-colleague Raphaël Halet , but reduced Deltour’s 12-month suspended prison sentence to six months.

“There was a lot of support outside the court. It is a partial victory that for the first time in Europe that a national judge recognised the whistleblower status for revealing professional secrecy, but a satisfying judgment would have been a full acquittal,” Deltour told International Tax Review.

The Frenchman also revealed to International Tax Review that he is considering appealing the decision.

“I need time to read carefully the judgment and then I will make a decision,” he said. “The last possibility [is] to contest the judgement and it will allow me to go to the European Court of Human Rights, but I haven’t made a decision yet.”

Despite the fact that he was convicted, Deltour is optimistic that his case will have a positive impact and bring greater tax transparency in the future.

“It’s a step forward to whistleblowers in Europe, as my lawyer said it is the first time a European judge recognised whistleblower statues . I think it is step forward for tax justice.”

“Unfortunately, the first trial and the appeal trial gave a lot of attention to the messenger and not to the message, which is about tax competition in Europe and how it is more or a little more transparent thanks to the leak. Tax competition is more intense than ever with the decreasing corporate tax rates everywhere in Europe and I think that is having consequences on budgets and public policing.”

“Today’s decision is a recognition of my role in this story,” he added.

more across site & shared bottom lb ros

More from across our site

The UAE accounted for most Middle East promotions and new rankings, as A&M Tax, Baker McKenzie, Dhruva Consultants and DLA Piper breached the top tier
Spanish-headquartered multinationals lead on reporting quality, while US and Swiss groups lag in the Fair Tax Foundation’s expanded analysis
Former IRS commissioner Danny Werfel joins ITR for a must-listen conversation spanning his time leading the agency, his AI risk framework, and the future of the OECD
Tax and legal services was PwC’s fastest-growing business line last year, helping to put the firm back on a par with its big four rivals
Ex-EY and Hourani & Partners leader Zain Satardien is using flexible staffing and AI-enabled systems to test a leaner model for specialist legal and tax advice
The big four firm is rightfully prioritising transparency and accountability as it seeks to rebuild from its scandal, but a glaring structural issue remains
A recent hiring flurry has taken the firm’s number of partner appointments this year to 121 and put it on track to hit 160 partner target early
The move brings specialist tax and litigation capability to EY as it seeks to close the gap on Baker McKenzie and Venezuela’s leading local firms
The industry’s response to AI requires an unfamiliar ingredient as firms battle to shape their futures
The ambitious big four challenger firm has also appointed ex-RSM partner Brad Ashton to build out its customs and global trade practice
Gift this article