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Deloitte Touche Tohmatsu Limited, commonly referred to as Deloitte, is a multinational professional services network. It is one of the Big Four accounting organizations and the largest professional services network in the world by revenue and number of professionals. Deloitte provides audit, consulting, financial advisory, risk advisory, tax, and legal services with approximately 457,000 professionals globally as of 2023. They serve a wide range of industries, helping clients navigate complex business challenges, drive innovation, and achieve sustainable growth.
Serves as the central coordinating entity for the global network of Deloitte member firms, overseeing global strategy, brand, risk management, and quality standards.
The headquarters is situated in a modern office building in London's primary financial district, designed to facilitate collaboration and embody Deloitte's forward-thinking approach. It often features sustainable design elements.
The global headquarters fosters a high-performance culture centered on collaboration, integrity, and innovation. It connects professionals from diverse backgrounds to deliver impactful solutions for clients and society.
The London headquarters is crucial for steering Deloitte's global vision, ensuring consistent service delivery across its vast network, and maintaining its position as a leading professional services provider worldwide.
Deloitte operates in over 150 countries and territories through its network of member firms. These firms provide a comprehensive range of services including Audit & Assurance, Consulting (Strategy, Analytics, M&A, Technology, Human Capital), Financial Advisory (Valuation, Forensics, Restructuring), Risk Advisory (Cyber Risk, Regulatory Risk), Tax (International Tax, Transfer Pricing, Indirect Tax), and Legal services (where permitted by local regulations). This global footprint enables Deloitte to serve multinational corporations, large national enterprises, public institutions, and fast-growing companies worldwide with localized expertise and globally consistent methodologies.
1 New Street Square
London
N/A
United Kingdom
Address: 30 Rockefeller Plaza, New York, NY 10112-0015, USA
Acts as a critical center for client engagement, talent development, and innovation within the Americas region, supporting Deloitte's largest member firm and driving market leadership in the United States.
Address: Bay Adelaide Centre East, 8 Adelaide Street West, Toronto, ON M5H 0A9, Canada
Central to Deloitte's Canadian operations, providing leadership and specialized services to clients across Canada, and contributing to the firm's national strategy and growth.
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As of April 2025, Deloitte' leadership includes:
Deloitte has been backed by several prominent investors over the years, including:
Deloitte's global leadership and member firm executive teams see periodic transitions reflecting strategic priorities and talent development. Recent significant changes include appointments to global board and member firm leadership positions.
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Deloitte's email format commonly uses the first initial followed by the last name, or the first name separated by a dot from the last name. Domain names can vary by country (e.g., @deloitte.com, @deloitte.co.uk, @deloitte.ca). The most prevalent global format is typically [first_initial][last]@[primary_domain].com.
[first_initial][last]@deloitte.com
Format
jdoe@deloitte.com
Example
85%
Success rate
Deloitte US Press Release • March 7, 2024
Deloitte announced an expansion of its alliance with Google Cloud to help public sector healthcare organizations harness data, analytics, artificial intelligence (AI), and machine learning (ML) to accelerate innovation and address pressing healthcare challenges. The collaboration aims to improve access, affordability, and quality of care by leveraging Google Cloud's advanced technology and Deloitte's deep industry expertise....more
Deloitte Global Press Release • September 7, 2023
Deloitte reported aggregate global revenue of US$64.9 billion for the fiscal year ending 31 May 2023 (FY2023), a 14.9% increase in local currency from FY2022. This growth reflects the success of Deloitte's multidisciplinary model and continued demand for its services across all regions and service lines....more
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