skip to Main Content

Our Story

Gilroy Gannon is a firm offering clients a wealth of experience through our expertise in auditing, accounting, taxation, and management consulting. Experience that is crucial to our clients.

Our History ...

Established in 1971 by Declan Gilroy and Joe Gannon, Gilroy Gannon Chartered Accountants Sligo has grown into the leading accounting firm in Sligo and the north west.  Throughout some 50 years the firm has grown to provide excellent service to a wide range of to match your business needs.  Our exceptional reputation in the North West of Ireland reflects our high standards, commitment to professionalism, and unparalleled client relationships.

Gilroy Gannon focuses its service offerings in areas that are most vital to a business’ financial wellbeing. You can rely on Gilroy Gannon to deliver timely and responsive service in a straightforward way. Our blend of our traditional and specialised service offerings and quality client service record provides a clear choice forward.

Taking care of your Business!

Gilroy Gannon Chartered Accountants are one of the leading Auditing, Accounting, and Consultancy firms in the West and North West of Ireland. Our experienced professionals deliver consistently high-quality service

Vision & Mission Statements


To be the accounting firm of choice for business owners by providing the most comprehensive and easily accessible professional services from staff who have a passion for excellence and are motivated by their own and our clients success.


Constantly challenging our own thinking while learning new skills, innovating, embracing the latest in technology, inspiring others, retaining the human touch and always delivering what we promise.

Core Value Statements

Our four core values described as service, character, culture and care, enable the best decisions, communicate strongly held principles and ensure all staff demonstrate the behaviour and attitude our clients need to see and hear whenever we work with them.


We listen to understand, speak to demonstrate we have understood and commit to delivering what clients need from us to succeed. 


Promises made are kept. Work is treated with respect and integrity. The highest ethical standards are never compromised. 


Our motivation today and inspiration for the future is to  continue building on our 50 years of success to date.


Your positive personal experience when we meet is as important to us as the excellent service you can expect.  

Quality service you can count on!

Gilroy Gannon Chartered Accountants offer businesses both large and small outstanding accounting services at equally impressive rates. Contact one of our partners today to see how we can help your business.

Back To Top