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Welcome to O'Brien Cahill & Co

Contact O'Brien Cahill & Co to find out more about our services

O'Brien Cahill & Co was founded in 1972.

O'Brien Cahill & Co was founded in 1972 with offices in Cork City and Mallow, Co. Cork. The Firm has grown steadily over the years and is now one of the largest independent firms of Accountants and Business Advisors in the south of Ireland. We feel that this growth is due, primarily, to our integrity, the quality of our work and our attention to detail.

We have a wide portfolio of clients varying in size; in fact our clients embrace the whole spectrum of professional and commercial activity.

We are strong in all aspects of taxation, enjoy excellent credibility with the Irish Revenue Authorities and because we have our own in-house taxation department, we are able to provide our clients, large and small, with the type of tax expertise normally only available from the International Big Four firms..

The way we work with our clients reflects the individuality of each – their particular needs and aspirations, the size and nature of their business and the personalities involved.
The major proportion of our staff are qualified accountants. Accordingly, we are able to provide our clients with an exceptionally high quality service.

Our philosophy revolves around complete commitment to our Clients.

Contact O'Brien Cahill & Co to discuss your requirements.





new business support

New Business Support

secretarial services


forensic accounting

Forensic Accounting / Litigation Support

insolvency advice

Insolvency Advice

payroll services

Payroll Services

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