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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 & insights

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News: 01 MARCH 2021

Allen & Overy expands Project Finance and Renewables practice with group acquisition; to open West Coast office

Allen & Overy today announced the expansion of its Renewables practice with the acquisition of Akin Gump Strauss Hauer & Feld’s market-leading Project Finance and Renewables Practice (the “Team”).

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Aerial view of winding internal staircase

News: 26 FEBRUARY 2021

A&O partners with Young Citizens for Justice Week 2021

LONDON – Allen & Overy has once again partnered with Young Citizens to help deliver the Big Legal Lesson, as part of Justice Week 2021. 

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Publications: 24 FEBRUARY 2021

Why investors should care about their portfolio companies infringing competition law

Financial investors, including private equity businesses, can be held liable for competition law infringements committed by one of their portfolio companies.

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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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