Our focus is on ensuring that we can offer the best possible service to our clients


Our History

Tynan Dillon was founded in 1952 by Pat Tynan and Sean Dillon.

The firm comprises three separate companies, with one each trading from Dublin, Naas and Ballyhaunis. Tynan Dillon Limited in Dublin now has five principals – Barry Dillon, Conor Dillon, Liam Farrell, John Dillon and Niamh Boyd. Tynan Dillon Naas Limited has three principals based in Co. Kildare – Liam Murphy, Joe O’Rourke and Teresa Wall, and Rosaleen Harrison is the principal in Tynan Dillon Ballyhaunis Limited, based in Co. Mayo, (additional details in the Principals section above).

The practice underwent significant change in 2011, when we incorporated the business in each office into the three separate companies, and we undertook a re-branding exercise. The me&him&you design studio was commissioned to develop a new identity for the firm, with the intention of demonstrating its deep rooted foundations in the traditions of the accountancy profession, while also illustrating its forward thinking and progressive approach.

Further change of note took place in 2019, when the Tynan Dillon Dublin office joined the Xeinadin Group. The Xeinadin Group is an extensive association of more than 2,000 advisors spanning the UK and Ireland. Xeinadin Group helps entrepreneurs, SME’s, corporations and not-for-profit organisations achieve their goals and mission. Through unmatched collaboration and innovation, we work together to support and inspire you to reach your strategic business goals or accomplish the mission of your organisation. We provide all the traditional accountancy services but thrive when we can add value to your business, collaborating with a deep business understanding. In our group, you will find all the expertise needed to help your organisation grow and reach its full potential, regardless of your sector. Xeinadin has a global reach and knowledge but works locally with a personal touch!

Over sixty-five years since its inception, the firm now has three offices, and more than forty professional staff providing professional advice and services to a broad range of clients. We focus on ensuring that we can offer the best possible service, with all of our principals having the experience and expertise to provide detailed advice, while each retains a specialist interest in some or all of the following areas;

  • Management Accounts and Business Management Reporting
  • Taxation Consultancy and Planning
  • Statutory Audit
  • Investment Business, to include Pensions, Life Insurance, and Bank Deposits
  • Insolvency, to include Personal Insolvency, Liquidations, and Receiverships

These varied specialist interests ensure that we can provide an expert service in all of the above areas of practice.

We look forward to the next sixty years…