Matheson LLP stands out for its large team and its advisory capabilities, coupled with extensive transactional and contentious expertise. Many of the partners are qualified chartered accountants, chartered tax advisers and have experience of working in Big Four accountancy firms. It is widely recognised for its financial services tax practice, which has included recent advice on major corporate restructurings, investments and acquisitions. The firm is also acclaimed for its indirect tax expertise and abilities in tax controversy. Joe DuffyTurlough Galvin, Shane Hogan, Catherine O’Meara and Gerry Thornton are at the top of the market, with Tomás Bailey and indirect tax specialist Matthew Broadstock also impressing. In early 2024, Olivia Long rejoined the firm as head of tax policy from her previous position with the OECD in Paris.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘The tax team is excellent - technically superb, responsive, collaborative and a pleasure to deal with.’

  • ‘The team's technical excellence, responsiveness, practicality and honesty differentiate them from their competitors. Shane Hogan is simply excellent - forthright, honest, responsive and technically superb. I also hugely value the input of Catherine O'Meara ’

  • ‘Incredibly thoughtful firm - cohesive delivery, consistently excellent.’

  • ‘Gerry Thornton, in particular, stands out for being so caring and so practical.’

  • ‘The Matheson team have a deep knowledge of Irish Tax rules and how they apply to Irish businesses. The team are able to take complex Irish and Foreign tax concepts and help us to implement them within the company.’

  • ‘The Matheson team provide top quality service. They are very timely in replies, and will go the distance to make sure the technical advice provided is well thought out and appropriate. ’

  • ‘Knowledgeable, pragmatic, experienced, well informed, available, very easy to work with.'

  • ‘Tomás Bailey has been an exceptional business partner to my company on tax matters. He is exceptionally knowledgeable and provided advice regarding our options which was invaluable. We were impressed by him, and guided by Matheson throughout, and achieved the best outcome due to their involvement. Cannot recommend highly enough.’

Key clients

  • AbbVie
  • Advent International
  • Cimpress
  • Circle
  • Fremantle Media Group
  • Horizon Therapeutics
  • Johnson & Johnson
  • JP Morgan
  • Macquarie European Infrastructure Fund
  • MariaDB Corporation Ab
  • ProKidney
  • STERIS plc
  • Trinity Biotech Plc
  • Vermilion Energy Inc
  • Vertex Inc
  • Vertiv

Work highlights

  • Advised Horizon Therapeutics plc on its acquisition by Amgen Inc, valued at approximately $28bn.
  • Advised Waystone on two transformational transactions in 2022.
  • Advised Graham Partners on its acquisition of a majority ownership of Irish company Taoglas.

Lawyers

Hall of Fame
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Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.

Practice head

The lawyer(s) leading their teams.

Shane Hogan

Other key lawyers

Turlough Galvin, Catherine O’Meara, Gerry Thornton, Joe Duffy, Aidan Fahy, Tomás Bailey, Matthew Broadstock, Caroline Austin, Brian Doohan, Vahan Tchrakian, Philip Tully, Barry McGettrick, Olivia Long