Gus Sinclair joined Moore DM Ltd. in September 2018. He has six years of tax experience and is qualified in the US and the UK. Gus focuses primarily on privately owned businesses and their associated high net worth stakeholders. In recent years, Gus has particularly focused on taxpayers eligible to use streamlined procedure in order to align their international affairs. The services he provides to clients also include:

  • Global mobility services
  • Pre/post assignment tax consultation
  • Corporate and individual tax planning and compliance, including global tax minimization
  • Passive foreign investment company (PFIC) reporting
  • Structuring advice for companies entering new international markets
  • Expatriation planning and compliance
Gus earned a BSc in Finance and Accountancy from Brighton University. He is an Enrolled Agent (EA) and is currently studying towards a qualification in international tax through the AICPA. Gus is a member of Association of Taxation Technicians.


  • Global Mobility Services
  • Private Client Tax