We are advisors for large multinational pharmaceutical companies that operate both in Ireland and Internationally. 


Our services include:


  • Audit

  • Accounting

  • Advice regarding Research and development credits

  • Tax structuring including intangible assets scheme, availability of 12.5% trading rate, tax consequences of seconding employees across Europe etc.

  • Company secretarial

Duignan Carthy O’Neill is registered with the US based Public Company Accounting Oversight Board (PCAOB) which enables the firm to undertake the audit of USA Public Company Subsidiaries located in Ireland and the UK


Authorised by the Institute of Chartered Accountants in Ireland to carry on Audits and Business Activities.

Member of AGN International Ltd an association of independent accounting and financial advisory businesses.

© 2015 DUIGNAN CARTHY O'NEILL. Chartered Accountants, Registered Auditors, Dublin, Ireland. All Rights Reserved.