John Gulliver

Tax Partner

John is Head of our Tax team. For more than 30 years he has advised Fortune 500, FTSE 100 and other major multi-nationals in respect of international tax especially in Ireland, the UK, and the US. His work is focused on technology companies, intellectual exploitation, 12.5% corporate tax, 6.25% knowledge box tax, share incentives, corporate inward investment, exits and remuneration of foreign assignees.

He has a particular focus on advising US businesses that invest in Ireland.  He has written extensively on US/Irish tax matters and has already worked on various reorganisations linked to US 2017 tax reform. He also has extensive tax controversy experience.

John was educated at the University of London LLB (Hons), is an associate of the Institute of Chartered Accountants and the Irish Institute of Tax and is a UK Chartered Tax Adviser.


  • Tax - 12.5% and 6.25% Corporation Tax
  • US/Irish tax including GILTI, FBII and BEAT
  • M&A Tax Structuring, Share Incentives

Representative Matters

  • Acted for major US insurer in respect of establishment of Irish innovation centre including intellectual property importation.
  • Acted for major US medical devices company on financing and structuring its operations through Ireland.
  • Acted for major cyber security group on developing 6.25% knowledge development tax hub in Ireland.


Chambers & Partners, 2019

John provides international tax advice to a broad multinational clientele. Clients remark that "he gets stuck into the deals."

Legal 500, 2018

John Gulliver comes highly recommended for ‘international corporate reorganisations’.

Speaking Engagements & Teaching

  • At the Annual IBA 2014 conference in Tokyo, John co-chaired the opening tax session "Life after BEPS: Is there anything left in International Tax Planning?"
  • 70th Congress of the International Fiscal Association, Madrid 2016.
  • LinkedIn

Areas of Expertise

Tax Law Inward Investment Recent Deals Corporate Law International Business Investment Funds Financial Services Real Estate Law Life Sciences Brexit Mergers & Acquisitions

Professional Memberships

Institute of Taxation in Ireland

Institute of Taxation UK (Chartered Tax Advisor)

Institute of Chartered Accountants in England and Wales

International Fiscal Association


London University (LLB)