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Sub practice
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 & insights

Panoramic view of London's skyline

Publications: 22 SEPTEMBER 2020

LCIA introduces new arbitration rules to improve efficiency and effectiveness

The London Court of International Arbitration (the LCIA) has published its new arbitration rules (the 2020 Rules) which will apply to arbitrations commenced from 1 October 2020. This is precisely six…

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Japan eases restrictions on foreign lawyers

Publications: 21 SEPTEMBER 2020

Japan eases restrictions on foreign lawyers

In May 2020, Japan's parliament passed a bill to amend the Act on Special Measures concerning the Handling of Legal Services by Foreign Lawyers (the Foreign Lawyers Act), which governs the provision…

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A drop of liquid being placed into a test tube

News: 18 SEPTEMBER 2020

Allen & Overy advises Apax Partners and its portfolio company Neuraxpharm on the acquisition of Buccolam® Assets

We have advised Apax Partners and its portfolio company Neuraxpharm Group, a leading European specialty pharmaceutical company focused on the central nervous system (CNS), on the acquisition of the…

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LGBT

Publications: 26 NOVEMBER 2018

Latest Directors’ liability survey points to cyber and data loss as top risks facing senior managers

Allen & Overy, in conjunction with Willis Towers Watson, the global risk advisory and insurance broker, has launched its sixth annual Directors’ liability report – “D&O: Personal Exposure to Global…

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Recognition

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