Our Service

O’Brien Coffey MacSweeny Accounting Killarney has significant expertise in advising owner managed businesses, sole traders, family business and new business start ups.
Our main services included audit services, accounting services, tax returns, business start up services, insolvency & restructuring

Our clients comprise both individuals and corporate entities. They range in size from entrepreneurial growth businesses to established companies with turnover in the tens of millions. Our clientele operate at a local, national & international level across a diverse variety of sectors, including hospitality, professional services, technology, farming, manufacturing and construction.

Our partners have a strong variety of experience working in each sector & are happy to share their big firm experience, knowledge & connections at a local level. O’Brien Coffey MacSweeny aim to drive & develop the local community at every stage from managing your accounts to helping create local jobs.


Sole Trader

We prepare annual accounts and taxation records to ensure you are fully compliant with Revenue. We are dedicated to explaining
tax issues in a way you understand and minimising your tax burden. Relieve the stresses of dealing with the Revenue service, and trust your business with O’Brien Coffey MacSweeny Accounting Killarney.

Limited Company

We will look after all of your company compliance including preparation of financial statements, calculation and preparation of your corporation tax returns.  We will advise on how to grow your company whilst ensuring adequate tax planning to minimise  tax liabilities.

Business Start Ups

Starting your own business is an exciting and challenging time.  We will guide you on the most appropriate business structure (sole trader or limited company), how to prepare a business plan as well as establish a good working relationship with your bank or investors.  We provide a free initial consultation for business start-ups.

Charities / Not for profit organisations

This sector is a key part of our services and we specialise in the following areas: Charities, schools, clubs, and other companies limited by guarantee.


We have vast experience in farm accounting and taxation. We will ensure you pay the minimum amount of taxation and help you to grow your business. We will also help to grow a good relationship with your bank to avail of finance for farm expansion.


We can deal with all of your compliance requirements and have experience in assisting clients with a range of issues. We work closely with you so that you pay the least amount of tax within the law by ensuring all applicable tax reliefs and allowances are being utilised. We always take the opportunity to consider tax planning in order that you can plan ahead and take any necessary action now that will benefit you down the line.