Deloitte Touche Tohmatsu Limited

Deloitte is a multinational professional services network and one of the "Big Four" accounting organizations globally. Its core business encompasses a wide array of services, including audit, consulting, financial advisory, risk advisory, tax, and legal services. The firm's mission is "to help our clients and our people excel" and to "make an impact that matters," reflecting a dual commitment to client success and employee development. Deloitte Touche Tohmatsu Limited, the coordinating entity for the global network, is headquartered in London, England.

Deloitte offers a comprehensive suite of services tailored to meet the complex needs of its diverse clientele. Key offerings include Audit & Assurance, Consulting (covering strategy, analytics, M&A, customer & marketing, core business operations, human capital, and enterprise technology & performance), Financial Advisory, Risk Advisory (including cyber, regulatory, and forensic services), Tax, and Legal services. The firm serves a broad target market, primarily operating in a Business-to-Business (B2B) model, engaging with large multinational corporations, government entities, and significant private companies across various industries such as financial services, technology, healthcare, energy, consumer products, and public services.

In recent years, Deloitte has maintained its position as the largest professional services network worldwide by revenue and number of employees. Joseph B. Ucuzoglu serves as the Global Chief Executive Officer, with Anna Marks as the Chairperson Deloitte Global. The firm reported aggregate global revenue of US$67.2 billion in FY2024, demonstrating sustained growth in a challenging economic landscape, particularly in its consulting and advisory segments. Deloitte has been investing significantly in advanced technologies like AI and digital transformation, and in 2025, it launched a refreshed brand positioning with the unified tagline "Together Makes Progress." The firm was also ranked No. 1 by revenue in the 2024 Gartner Market Share: Security Services, Worldwide, 2023 report and named the world's most valuable and strongest commercial services brand for the seventh consecutive year by Brand Finance in 2024.