RSM Network

Optimus is a correspondent to the RSM network of independent accounting and advisory firms each of which practises in its own right.

RSM is the sixth largest network of independent audit, tax and consulting firms, encompassing over 120 countries, 800 offices and more than 41,400 people internationally. The network's total fee income is US$4.9 billion.

Providing a range of professional services, RSM focus on audit, tax, risk advisory, IFRS, restructuring and transaction support. Beyond these, member firms also offer a wide range of specialist services from forensic accounting and expatriate advice to human resource consulting.

Whether you are an international firm or located on the Isle of Man we will be able to assist you.

Mark Schofield, Director

Flexibility is key. We put your requirements first, then deliver outstanding service in everything we do

Kerry Jones, Senior Manager

In all my years of working with Optimus, they have always conducted themselves in a highly professional and timely manner whilst providing an excellent service to their clients

Industry Professional, Director