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Our heritage

Connection, collaboration and innovation

Our story starts with our purpose: making an impact that matters. In 1845, our founder, William Welch, had the vision to build something that would last - to bring about change in the accountancy industry and beyond.

With connection, collaboration and innovation as the most important pillars, he founded Deloitte as a small accounting firm. Today, Deloitte has grown into a global organisation of more than 415,000 people dedicated to moving the world forward.

These beliefs have been the driving force behind our growth for more than 175 years. They form the basis of today's Deloitte and our goal to solve the world's biggest challenges, both in business and in society.

Deloitte's more than 175-year history of serving our people, clients and communities is the foundation of who we are. As we build on our past to shape our future, we remain rooted in the values and our purpose.

Joe Ucuzoglu, Deloitte Global CEO


Through Wars, Recessions and Pandemics: A Story of Resilience

Learn how we live our shared values and help our customers, communities and people move forward in the face of adversity.

Stories