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Rupert Shiers


Rupert Shiers

For fifteen years, Rupert has navigated complex HMRC discussions and tax litigation for corporates, individuals and pension funds, and is the Leader of our Tax Disputes team in the UK and Europe. 

Beyond navigation, Rupert provides technical knowledge in areas many group tax functions have not needed to develop themselves: taxpayer rights and HMRC powers, tax statutory interpretation, tax public law, tax-related evidence and procedure. His commercial approach has made him a valuable extension to in-house tax teams on a wide-range of projects. 

He is one of a small handful of UK advisers with experience of challenging tax which discriminates against cross-border structures (a breach of EU law). He also helps eliminate tax charges on unintended events or where the documents do not tell the full story, advising taxpayers and persuading HMRC. As well as astute advice on disputes in tax, Rupert deals with tax in disputes, helping commercial claimants and defendants understand and minimize the impact of tax on their litigation. 

Rupert has worked full-time in HMRC disputes since before it became a real discipline, and has been recognized for many years as a leader in his field. He worked for many years with ex-HMRC officers and chartered tax advisers in a Big 4 environment before returning to practice in an international law firm.

'is noted for his representation of clients in HMRC enquiries and investigations in addition to his recognised excellence as a tax litigator'

Chambers 2014, Contentious Tax, Band 1

Representative experience

FTSE-100 company. Advising and acting in Tribunal proceedings and achieving settlement in relation to tax-structured hedging arrangements, including the application of unallowable purpose rules.

US tech giant: advising on HMRC's cross-border application of 'merchant acquirer' bulk data power

Education and admissions


  • Bachelor of Civil Law (First), University of Oxford, 1996
  • MA, Law (First), University of Cambridge, 1994
  • CEDR, Accredited Mediator


  • Chartered Institute of Taxation, EU & Human Rights sub-committee
  • Chartered Institute of Taxation, Management of Taxes sub-committee
  • Confédération Fiscale Européene, UK delegate
  • UK delegate Confederation Fiscale Europeene


Chambers Partners Contentious Tax 2010 Band One

Chambers & Partners


Chambers Partner Contentious Tax 2015 Band One

Chambers & Partners


Chambers Partners Contentious Tax 2009 Band One

Chambers & Partners


Chambers Partners Contentious Tax 2011 Band One

Chambers & Partners


Chambers Partners Contentious Tax 2012 Band One

Chambers & Partners


Chambers Partners Contentious Tax 2013 Band One

Chambers & Partners


Chambers Partners Contentious Tax 2014 Band One

Chambers & Partners

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