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2026 Edition
General corporate tax
Tier 2
18 firms ranked
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Tier 1

A&L Goodbody
3 practice areas
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Arthur Cox
3 practice areas
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Deloitte
7 practice areas
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KPMG
7 practice areas
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Maples Group
3 practice areas
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Matheson
3 practice areas
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Tier 2

EY
7 practice areas
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McCann FitzGerald
3 practice areas
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PwC
7 practice areas
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Walkers
2 practice areas
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William Fry
3 practice areas
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Tier 3

Dillon Eustace
2 practice areas
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Eversheds Sutherland
2 practice areas
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Grant Thornton
6 practice areas
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Mason Hayes & Curran
3 practice areas
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Pinsent Masons
2 practice areas
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Tier 4

Azets Ireland
2 practice areas
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HLB Sheehan Quinn
2 practice areas
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Transfer pricing
Tier 1
12 firms ranked
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Tier 1

A&L Goodbody
3 practice areas
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Deloitte
7 practice areas
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EY
7 practice areas
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Matheson
3 practice areas
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PwC
7 practice areas
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William Fry
3 practice areas
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Tier 2

Arthur Cox
3 practice areas
View full profile
KPMG
7 practice areas
View profile
Maples Group
3 practice areas
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Tier 3

Grant Thornton
6 practice areas
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Mason Hayes & Curran
3 practice areas
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McCann FitzGerald
3 practice areas
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Linked Reviews
Tax

William Fry is the only independent, non-audit, multi-disciplinary global tax practice in Ireland. The full-service firm provides complex structuring advice on leading transactions, along with compliance and due diligence services. The firm advises the pharmaceutical, retail and technology sectors. Partner Sonya Manzor is head of tax and works with head of financial services tax, Ted McGrath. Fellow partners Brian Duffy and Anne Tobin comprise the senior leadership.

The firm acted for Amgen on its proposed acquisition of Horizon Therapeutics, valued at $28.3 billion. It also advised the government on a state aid case.

Associates Dorothea Turley and Rachel Gaffey joined the practice. Outgoing partner Declan Lavelle departed to DLA Piper during the research period.

Client feedback

“They are very dedicated and technical and nice to work with.”

“The partners we work with are commercial and responsive. They excellent at explaining detailed, technical tax concepts in a clear and concise manner. They have a deep understanding of international tax structuring matters which we find incredibly beneficial, along with access to world class tax advisory firms through the Taxand network.”

“Strength in depth, clear tax advice, delivery to budget and in a timely fashion.”

3 results3 results
The big four spin-off firm becomes Taxand’s second UK member; in other news, Haynes Boone launched a UK tax practice
Geopolitical rivalry is reshaping global tax cooperation, as the OECD’s minimum tax framework fragments and the EU grapples with the ensuing legal fallout
LED Taxand’s partner tells ITR about entrepreneurial inspirations, the importance of people skills, and what makes tax cool
Canada risks inflaming US trade relations in a presidential election year and increasing costs for consumers, according to local experts
Firm hires associate director from KPMG as a tax compliance consultant
Latest addition to global network brings on one of South Korea's largest firms
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