Deloitte, which operates under the umbrella entity Deloitte Touche Tohmatsu Limited, is the largest of the Big Four professional-services networks by revenue and headcount. It's a private company limited by guarantee, incorporated in England and Wales, with its global headquarters in London. Founded in 1845, the network provides audit, consulting, financial advisory, risk advisory, tax and legal services across more than 150 countries.
For the fiscal year ended May 31, 2025 (FY2025), Deloitte reported record global revenue of US$70.5 billion, a rise of nearly 5% over the prior year, with a workforce of roughly 470,000 people. Because Deloitte is a private network of member firms rather than a listed company, it has no market capitalization, and individual member-firm financials aren't separately disclosed at the global level. Global leadership sits with CEO Joseph B. Ucuzoglu and Global Chair Anna Marks.
In India and the wider South Asia region, Deloitte is led by CEO Romal Shetty, who also serves on the Deloitte Global Executive Committee. The India operating entity, Deloitte Touche Tohmatsu India LLP, is registered in Mumbai. Deloitte's India and South Asia practice reported revenue of about Rs 14,500 crore for the year ended May 2026 and a workforce of more than 55,000 professionals, making it one of the fastest-growing practices in the Deloitte network.