Accountants Dublin

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''Eamon has a stress-free way of getting accounts done while still getting the advice across to help raise my profit.'' Robert Dill



Heres what some of our customers had to say about us:

Keith Grant, Grants Master Butchers, Roundwood, Co Wicklow
We switched our business to OSA McQuillan's automatic accounts system and it totally revolutionised how we   
Robert Dill, Director Robert Dill Computing
I have worked with Eamon for years and would highly recommend him. He has a no nonsense approach   
Barti Murthy
I cannot recommend Eamon and his team enough, they have a system that not only made my job   
James Kennedy, CEO Piehole
OSA McQuillan provide no-fuss advice on any topic small or large. Their staff have a genuine   
David Fraser, Head of Finance and Commercial Activities Age Action Ireland, Dublin
Eamon undertook an accounts job for Age Action Ireland in our office in Dublin. He was a pleasure   
Gilly Balmer, Balmer Recruitment, Dublin
Eamon was my accountant for a number of years and during that time was always extremely   
Eric Conroy, Former Treasurer An Taisce, Dublin
Eamon's firm were our accountants for four years and performed a very good service. They worked   
Padraig O Nualllain, Traditional Irish Singer Ballyfermot College of Further Education, Dublin
Eamon has done work for me for a number of years. His attention to detail has more than   

OSA McQuillan Accountants and Business Advisers

We promise you will get your accounts back faster.

We are OSA McQuillan, Dublin accountants. We want to help customers, and we work with them so we can help them to achieve success.

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. If you are looking for an accountant then:

Schedule An Appointment!

You can see a full list of what we can do for you if you have a look here:


The benefit of dealing with OSA McQuillan Accountants 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 2017 on average within 24 days of getting the books and records. That gives you, the business person, more time to budget for the year ahead.  We use IT systems to extract accounts data from your documents and convert that data to accounting records.  You can view that accounting data online as we give you access to our package.  You can generate your own invoices from our accounts database and email them out to your customers, and we can see all that information immediately, so if we need to file VAT returns and so forth we can do that immediately from the data you have entered.  You can also generate statements for emailing to your customers if you need to do that.

In relation to the bank, we can get data from the bank automatically if you give us the necessary permissions.  Please note that we would only have viewing rights and have no permission to generate transactions like transfers of money.  The result of this is that you never have to send your accountant a copy of your bank statements again, or to file them away until the month or year end - because we automatically get the information from your bank.

We can help you set up your limited company - there is more information here :

If you have a look at our Guides section you will find a lot of information that is useful for you to know if you are running your own business if you want to have a look here:

Some of our Clients