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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.

Support for Brexit Businesses in Ireland

Tax Summary Card 2020

Download the up to date tax details for 2020.

Budget Highlights 2021

Budget 2021 highlights and analysis.


Welcome to OSK

A video message from Tadgh O'Sullivan, Director.

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