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

Awards
ITR is delighted to reveal all the shortlisted nominees for the 2026 Europe Tax Awards
The firm has hired a team of private client lawyers from Withers to launch in New York and Connecticut, though ITR analysis suggests it faces stiff competition
The ability of tax authorities to receive and analyse data is becoming ‘quite advanced’, warns Stuart Lang, head of EY’s compliance co-sourcing solution
The Court of Appeal ruling clarifies that treaty benefits are not abusive where transactions are commercially driven, providing greater certainty on “main purpose” anti-avoidance tests
Despite the Netherlands featuring an unusual concentration of World Tax-ranked technology-led providers, sources believe there’s a long way to go to challenge the established players
Ethics seems to be playing a subservient role to an entitlement culture borne out of a pervasive ‘revenue at all costs’ mentality at the big four
Historical World Tax data suggests the ‘largest law firm merger in history’ may not pose a serious threat to the world's leading tax practices
The repeal of Libya’s statute of limitations and tougher enforcement leave taxpayers navigating a high-stakes choice between conciliation and litigation
All the tax partners elevated across the UK, US and Singapore were private client specialists, continuing a market trend of intense investment and competition
Rolf van de Velde, dubbed ‘an expert chosen by experts’, is tasked with scaling Reptune’s self-service compliance offering
Gift this article