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“We are a long-established local firm and have a complement of highly qualified and efficient staff who are specialists in their fields and have extensive knowledge of the issues facing all manner of businesses operating on the Isle of Man.”
Dennis McGurgan, Managing partner
We are Grant Thornton Isle of Man
We have been operating under the same ownership since 1987, although we can trace our origins back even further. We provide a range of services to clients, including private individuals and public companies listed on international stock exchanges. We act for investment funds, fund administrators, insurance companies, fiduciary service providers, property companies, retailers, farms and local trading companies. All of our staff have a detailed knowledge of the Isle of Man economy and the regulations our clients face.
US$3.61
million
Revenue
30
People
1
Offices
7
Partners

Global strength
Grant Thornton is one of the world’s leading organisations of independent assurance, tax and advisory firms. With more than 62,000 Grant Thornton people, across over 130 countries, we are focused on making a difference to clients, colleagues and the communities in which we live and work.

Why Grant Thornton
The firm has a wide range of clients, from captive insurance companies, insurance managers and mutual funds, to local corporations. The services we provide reflect this diversity: in addition to a full range of auditing and accounting functions, the firm also offers specialised services required to conduct business in a low tax jurisdiction.
Awards
Grant Thornton is an award-winning globally recognised professional services network. Here are some of our awards:
What we do