About us Accountant Dublin

call us today (353)-1-2834123

Eamon O’Sullivan ( Director ) graduated from UCG ( now NUI Galway ) with a Bachelor of Commerce and qualified as an accountant in 1993. In 1995 he started his own practice called O’Sullivan Associates and renamed the company to OSA McQuillan in 2017.

Right now you are spending too much time on accounting and Eamon can help reduce that time so you can do something more enjoyable. So phone him on 01 283 4123 for a 15 minute consultation on how he can make that happen.

Hailing from Limerick, Eamon is interested in rugby and spends his weekends trying to improve his 5K time in his local ParkRun.

OSA McQuillan Accountants and Business Advisers

We promise you will get your accounts back faster.

Olga Kulakova
Olga Kulakova
2024-05-03
Helpful, professional, soft. Highly recommend
Galahad Goulet
Galahad Goulet
2024-04-30
alice tevlin
alice tevlin
2024-04-30
Eamon and his team are helpful, knowledgeable and care about their clients. Their expertise and knowledge have made managing my finances so much easier. With the support of OSA McQuillan, I have been able to focus on growing my business.
Carlos G
Carlos G
2024-04-30
Outstanding service from Eamon and the team. They are knowledgeable and patient with queries and go the extra mile to adapt to one’s specific situation and accounting needs. Highly recommend!
Tommy Bracken
Tommy Bracken
2024-04-30
OSA McQuillan have provided us with high quality support that has allowed us to focus on what is important to our business.
peterconstant
peterconstant
2024-04-08
Jason O'Callaghan MSc BA Hons H-Dip
Jason O'Callaghan MSc BA Hons H-Dip
2022-11-09
Great to work with
Wilson Prado
Wilson Prado
2018-06-21
Reliable accounting office in Dublin, highly recommend.
Guilherme Prado Lazzarin
Guilherme Prado Lazzarin
2018-06-13
Reliable, fast and accurate accountants.