Free accounts program worth €25 pm for new customers

for the first 10 to sign up in September 2018. Contact us using the form below and we will be in touch.

Eamon's firm were our accountants for four years and performed a very good service. They worked well with staff, were timely in doing their work and were good value for money.
Eric Conroy, Former Treasurer An Taisce
I have worked with Eamon for years and would highly recommend him. He has a no nonsense approach to getting accounts done while still getting the advice across to help raise my income level.
Robert Dill, Director Robert Dill Computing
Eamon has done work for me for a number of years. His attention to detail has more than once resulted in my receiving tax reabates I didn't know I was due. His service is efficient and punctual.
Padraig O Nualllain, Traditional Irish Singer Ballyfermot College of Further Education
OSA McQuillan provide no-fuss advice on any topic small or large. Their staff have a genuine interest in helping us succeed as well as the attention to detail to keep the day to day on track.portrait1
James Kennedy, CEO Piehole
Eamon undertook an accounts job for Age Action Ireland. He was a pleasure to deal with, professional in all aspects of the job and excellent value for money. I will be working with Eamon in the near future.portrait1
David Fraser, Head of Finance and Commercial Activities Age Action Ireland


A Reliable & Quality Service
We promise you will get your accounts back faster.

We are Dublin accountants. We want to help clients and work with them so we can help them to achieve success in their business.

We aim to deliver our services and share accounting and tax data in jargon-free language, to a very high quality. We will do that as quickly as the client wants us to, and always looking to give tax, business advice and support that they value.

Schedule An Appointment!




The benefit of dealing with OSA McQuillan is that you can rely on us respond to your phone calls and emails that day.  We guarantee that.


Many of our clients are with us for years, trusting us to take care of their accounting and tax needs.


We produced business accounts for our clients in 2016 on average within 26 days of getting the books and records. That gives you, the business person, more time to budget for the year ahead.

Some of our Clients