Walter currently advises a number of multi-national companies and sits on the board of directors of a number of companies including finance companies, captives and investment vehicles.  Aside from his wealth of experience in international tax matters, including tax planning, treaty interpretation and advice, he also has a great deal of knowledge on corporate matters, company law, management, and administration. He specialises in treaty planning, holding companies, intellectual property, and treasury and finance operations.

During his time as a Big 4 partner, he was responsible for the firm’s tax department and was a regular participant in international tax conferences and events. He continues to give various lectures and presentations, and is the author of various taxation articles. For a number of years he was an examiner in taxation with the UK’s Association of Chartered Certified Accountants.

Walter holds a first degree in Accounting and a post-graduate qualification in International Tax Law. He is a  member of the Institute of Financial Accountants in the UK, a member of the Malta Institute of Taxation, a member of the International Fiscal Association, and was involved in various councils and committees in the fields of taxation and financial services.