We can help you get to 100% automation of your accounts using scanning technology, online bank reporting and online accounting software

Free accounts program worth €25 pm for new customers for our accounting service. 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, Dublin
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, Dublin
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 in our office in Dublin. 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, Dublin
Eamon was my accountant for a number of years and during that time was always extremely approachable and provided me with invaluable advice time and again. I found him to be highly organised, efficient and very helpful in terms of growing my business. I am happy to recommend Eamon to any owner managed business looking for a personalised, professional service.
Gilly Balmer, Balmer Recruitment, Dublin

We promise you will get your accounts back faster.

We are OSA McQuillan, Dublin accountants. We want to help clients, and we 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. If you are trying to find 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: http://www.osamcquillan.ie/register-with-us/


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 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.

What all this means is that your accounting is streamlined and the exchange of invoices and other information takes place automatically.  You can benefit from the accounting background that larger companies without the overhead of employing an accountant, setting them up with accounting programs and so on.  We can be your outsourced accounting service provider and you can concentrate on running your business.

We can help you set up your limited company - there is more information here : http://www.osamcquillan.ie/eazy-company-formations/

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: http://www.osamcquillan.ie/accounting-tips-from-dublin-accountants/

Some of our Clients