The Yearbook & Directory of Ireland's international financial services industry
Friday, 25th June 2021

Walsh, Aidan

Firm: EY Financial Services
Position: Tax Leader, EY Financial Services
Address: EY Building, Harcourt Centre, Harcourt Street, Dublin 2
Phone: +353 1 221 2578
Fax: +353 1 475 0557
Personal URL:

Special Areas:

Taxation of financial services activities, international tax advisory, international tax structuring, tax risk management, tax policy and strategy advisory.


Aidan Walsh is a Tax Partner in EY's Financial Services Office. He has 20 years' experience in the taxation of financial services activities in a domestic and international context. Aidan is a qualified solicitor with a law degree from UCC. Aidan has 20 years of experience advising banks and international groups on Irish tax issues, working for periods in London and in one of Ireland's largest banks. He specialises in international tax structuring and advisory.


Aidan has published and spoken widely on the taxation of financial services in Ireland, tax risk management and other matters.
He is also co-author (with PJ Henehan) of Global Tax Risk Management, published by Tottel in the UK in 2007, which has been sold to tax professionals in over 20 countries. The book was reviewed by Taxation Magazine: 'This is an excellent book.' He also authored the EY report prepared for the Irish Department of Finance, The Historical Development and International context of the Irish Corporate Tax System. It can be found at:


Associate of the Irish Taxation Institute, Solicitor (Law Degree UCC), Diploma in Corporate Treasury (DCU). Aidan has also recently completed a Master’s in Business Studies on Intra-Firm Co-ordination.


Aidan is a member of the Irish Prime Minister's Banking and Treasury Group and a member the Irish Association of Corporate Treasurers. He is also an associate of the Institute of Taxation in Ireland