Jack Prytherch is a Partner in our tax disputes team. He represents both corporate and private clients on a variety of UK and international tax disputes.
Jack’s practice covers all forms of (direct and indirect) contentious tax matters, including: tax litigation and alternative dispute resolution; HMRC enquiries and compliance checks; HMRC civil information powers; tax offences and serious investigations; voluntary disclosures and penalty mitigation; and commercial tax disputes.
His clients range from multinationals to high-net-worth individuals, and he has extensive experience across a variety of sectors, including: technology/fintech; financial services; sport; energy and utilities; and life sciences and healthcare.
Jack is ranked in Chambers and Partners and featured as a ‘Key Lawyer’ in Legal 500. He authored the first UK chapter of the Chambers and Partners Tax Controversy Global Practice Guide and regularly writes commentary on contentious tax issues for various publications.
Prior to specialising in tax disputes, Jack also had a background in advisory and transactional work in respect of a broad range of UK and international tax matters. Applying this technical and commercial background to contentious tax matters, he is able to find solutions that achieve the best commercial results for clients (including working with clients and industry bodies to secure changes to tax legislation and long-standing HMRC policy). Where a tax appeal or judicial review is unavoidable, Jack has experience litigating before the tax tribunals and higher courts, including at the Supreme Court level.
“Jack Prytherch has provided a first-rate service”
Helping you succeed in tomorrow's world
Recent years have seen fundamental shifts in the global tax landscape, as tax authorities struggle to keep pace with the digitalisation and globalisation of the economy. With unprecedented levels of international cooperation and changes to long-standing tax rules, tax disputes are increasingly on the rise. The potential for reputational harm means that tax is also a key part of the ESG agenda. My goal is to help clients navigate this increasingly complex and hostile environment.
“He is easy to work with, hard-working, and clients like him because he explains things thoroughly and clearly”
International infrastructure group
Advising on High Court commercial claims concerning multi-million pound employment tax issues.
UK Finance
Advising representatives of the UK banking and financial services industry regarding HMRC information powers, including proposals to collect data on where customers access online/mobile accounts.
International tech platform
Advising on potential risks under the Criminal Finances Act 2017 corporate offences for failure to prevent tax evasion.
International recycling group
Advising on HMRC enquiries into the transfer pricing treatment of cross-border supplies and related settlement with HMRC.
Staffing agency
Advising on potential civil/criminal tax risks in relation to alleged multi-million pound fraud by a third party in the supply chain, related HMRC investigation and crisis response.
UK financial institution
Advising on the voluntary disclosure of high-value VAT errors and registration failures relating to intra-group recharges.
US-headquartered online platform
Advising on HMRC compliance check into the tax treatment of employee share awards.
Premier League footballer
Advising on HMRC enquiries relating to the UK tax treatment of international image rights.
Online retail platform
Advising on HMRC investigation into the VAT treatment of intra-group services and associated VAT claims.
International staffing platform
Advising on HMRC compliance check into the tax treatment of arrangements with contingent workers.
