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Sub practice

Tax Litigation and Investigations

In the increasingly complex and international area of tax legislation and practice, Allen & Overy’s global team of experts supports businesses in the full range of high-end cross-border disputes and investigations.

Our advice on all aspects of corporate, commercial, VAT and finance tax is designed to avoid disputes, but we are ideally placed to provide support when, or even after, various issues with revenue authorities arise. 

A&O advises a broad range of clients on tax compliance and tax-related disputes and investigations, with particular experience of advising financial institutions. We handle litigation before national and international courts and specialist tax tribunals, including Corporation Tax and VAT disputes, and we liaise with tax authorities and advise on all issues associated with enforcement proceedings.

What sets us apart is our deep experience in handling cross-border transactions, with tax teams in our international offices enjoying strong relationships with local revenue authorities to support the smooth resolution of disputes for the benefit of all parties. 

News and insights

Distorted code on monitor

News: 28 September 2022

Allen & Overy advises on Agos EUR1.116 billion STS securitisation

Allen & Overy has advised in relation to a securitisation transaction of performing consumer loan receivables with a value of EUR1.116 billion carried out by Agos Ducato in accordance with European…

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News: 28 September 2022

Allen & Overy advises banks on financing for Porsche SE for the acquisition of shares in connection with the IPO of Porsche AG

Allen & Overy has advised a banking syndicate comprising Banco Santander, Crédit Agricole, Deutsche Bank, ING, J.P. Morgan and UniCredit Bank on a syndicated credit facilities agreement for Porsche…

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Blog Post: 20 September 2021

Common mistakes in eDiscovery and how to avoid them

eDiscovery mistakes made during an investigation can add unnecessary delay, cost and, at worst, impact the quality and nature of evidence available.  With the right knowledge and planning, these…

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Publications: 02 December 2020

Tax structuring advice not protected by litigation privilege despite enquiry from French tax authority

Litigation privilege did not apply to tax restructuring advice prepared for a company by accountants following enquiries received from the French tax authority. Even where litigation can be said to be…

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