Engaging with your business
Expert Knowledge
Achieving Results
Guiding your business

Advising Irish Business

OSK are recognised as one of Ireland’s leading audit and accounting firms providing quality and professional business advice to Irish businesses including SMEs, multi-national groups, government bodies and sole traders since 1985.

OSK offer expertise in audit and accounting services, business advisory, accountants for contractors, small business support, taxation, payroll, bookkeeping and management accounting. Contact OSK today to find out more about our professional accounting services.




Download or subscribe to the OSK ezine.

Tax Summary Card

Download the up to date tax details for 2016.

Budget Highlights 2017

Budget highlights and analysis now available.


Welcome to OSK

A video message from Tadgh O'Sullivan, Director.

Request a Call Back

To request a call back from the OSK team, please complete the form below.

Sign-Up to OSK b2b