Mark O’Sullivan is a partner in the firm’s Tax Department and advises on all aspects of Irish corporate taxation. His primary focus is advising overseas clients establishing operations and doing business in and through Ireland. Mark also advises extensively on all aspects of international tax planning, including IP planning, cross-border reorganizations and financing transactions.
Experience and Education
Mark’s experience includes:
- Advising overseas clients establishing operations and doing business in and through Ireland; and
- Advising extensively on all aspects of international tax planning, including IP planning, cross-border reorganizations and financing transactions.
- Law Society of Ireland
- University College Dublin and Université de Toulouse I (France), (Bachelor of Civil Law)
- University College Dublin, (Diploma in Financial Services Law)
- AITI / Chartered Tax Adviser (CTA)


