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OSK have been providing quality and professional business advice to Irish businesses since 1985. OSK offer expertise in audit and accounting services, business advisory, accountants for contractors, small business support, taxation, international tax, payroll, bookkeeping and management accounting. Based in Dublin, we specialise in progressive owner managed businesses and our clients include SMEs, multi-national groups; personal clients and contractors. Contact OSK today to find out more about our professional accounting services.

OSK Questions

The OSK annual revenue was $5.3 million in 2026.

Dylan Byrne is the Managing Partner at OSK of OSK.

49 people are employed at OSK.

OSK is based in Dublin, Leinster.

The NAICS codes for OSK are [54121, 5412, 541, 54].

The SIC codes for OSK are [73, 87, 8721, 872].

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