Gary R. Landa, CA Professional Corporation has been serving clients in Mississauga and the GTA for more than 31 years. Gary Landa started the Firm in 1984 with the sole purpose of delivering a full range of accounting services as well as business and personal tax solutions for corporations, entrepreneurs and individuals. Today a large diversity of clients rely on the expertise of Gary Landa and his team. Our clients are located in Mississauga, the Greater Toronto Area (“GTA”) and across Canada. We also have clients in United States as well as Germany.