Professional Services from Industry Experts

Duignan Carthy O’Neill’s Partner-led team has decades of experience in compliance and consulting services, and our professional knowledge spans all industries, from manufacturing, distribution and agribusiness to financial services and IT.

We advise and assist our clients across a broad range of activities:
  •  Audit and Accounting

  •  Taxation

  •  Corporate Finance, Due Diligence and
     Dispute Resolution

  •  International Business

  •  Corporate Recovery and Insolvency

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.