# EY **Source:** https://geo.sig.ai/brands/ey **Vertical:** Professional Services **Subcategory:** General **Tier:** Leader **Website:** ey.com **Last Updated:** 2026-04-14 ## Summary Big Four professional services partnership at $51.2B FY2024 revenue (+3.9%); CEO Janet Truncale launched EY.ai Agentic Platform with NVIDIA (150 agents, 80K professionals) competing with Deloitte and PwC for global audit and consulting. ## Company Overview EY (Ernst & Young) is a London-based global professional services partnership — one of the Big Four accounting and consulting firms — generating $51.2 billion in record annual revenue in fiscal year 2024 (+3.9%), with approximately 393,000 professionals operating across more than 700 offices in over 150 countries and territories. EY's roots trace to 1903 when Alwin C. Ernst and Theodore Ernst founded Ernst & Ernst in Cleveland, Ohio; the modern EY emerged from the historic 1989 merger of Ernst & Whinney and Arthur Young & Co. EY's integrated service model spans assurance (the highest-revenue segment among Big Four peers), consulting, strategy and transactions through EY-Parthenon (created via the 2014 acquisition of The Parthenon Group), and tax services. In July 2024, Janet Truncale became EY's Global Chair and CEO, the first woman to lead the firm. In 2025, EY launched the EY.ai Agentic Platform in partnership with NVIDIA, deploying 150 AI agents supporting 80,000 EY professionals across tax, risk, and finance domains to surpass 3 million tax compliance outcomes annually. EY's professional services model addresses the governance, compliance, and transformation needs of organizations that require externally validated expertise and independence that internal teams cannot provide: audit clients require Big Four credibility (EY's audit opinion on financial statements provides the third-party assurance that capital markets, regulators, and lenders require for publicly traded companies), while EY-Parthenon's strategy consulting practice (inherited from The Parthenon Group, known for work in private equity due diligence and corporate strategy) provides the analytical rigor and independence that management consulting engagements require. EY's global network structure (member firms in 150+ countries sharing methodologies, technology, and talent under the EY brand) enables multinational clients to use a single coordinated team for cross-border transactions, regulatory compliance across jurisdictions, and global audit work — a coordination advantage that regional accounting firms cannot match. In 2025, EY competes in the global professional services, Big Four accounting, and management consulting market with Deloitte ($67.2B revenue, the Big Four revenue leader), PwC ($55.4B revenue), and KPMG ($38.4B revenue) for multinational audit mandates, consulting project wins, and tax advisory relationships. The EY.ai Agentic Platform launch (150 AI agents, NVIDIA partnership) reflects EY's strategy to use AI to create productivity leverage across the 393,000-person workforce — particularly in tax compliance, where high-volume, rules-based work is most amenable to AI automation. The 10% workforce reduction over 18 months reflects the professional services industry's response to AI-driven productivity gains and post-pandemic consulting demand normalization. The 2025 strategy focuses on scaling the EY.ai platform across all service lines, differentiating EY-Parthenon in strategy consulting versus McKinsey, Bain, and BCG, and rebuilding consulting revenue growth after the failed Project Everest separation attempt in 2023. ## Frequently Asked Questions ### What is EY? EY (Ernst & Young) is a multinational professional services network and one of the Big Four accounting firms. Founded through the 1989 merger of Ernst & Whinney and Arthur Young, EY provides assurance, tax, consulting, and advisory services across over 150 countries with 393,000 employees and $51.2 billion in revenue (2024). ### Who are EY's customers and target market? EY serves a diverse range of clients including Fortune 500 companies, large enterprises, government agencies, and organizations across all sectors. The firm provides consulting, assurance, tax, and transaction services to help clients navigate complex business challenges and transformation. ### When was EY founded? Modern EY was formed in 1989 from the merger of Ernst & Whinney and Arthur Young & Co. However, its predecessor firms date back to 1903 (Ernst & Ernst) and 1906 (Arthur Young & Co.). The firm rebranded from Ernst & Young to EY in 2013. ### Where is EY based? EY operates globally across more than 700 offices in over 150 countries and territories. The firm has major operations in the Americas, Europe, Middle East, Africa, and Asia-Pacific regions, with no single headquarters as it operates through a network of member firms. ### What is EY's revenue and size? EY reported $51.2 billion in combined global revenues for fiscal year 2024, a 3.9% increase from 2023. The firm employs approximately 393,000 people worldwide, making it the third-largest of the Big Four accounting firms by revenue. ### What makes EY different from competitors? EY differentiates through its strong focus on audit and assurance (highest among Big Four peers), EY-Parthenon strategy consulting capabilities, cutting-edge AI technology including the EY.ai Agentic Platform with NVIDIA, and culture of transformational leadership. The firm has been named to Fortune's 100 Best Companies to Work For in 2025. ### Who are EY's main competitors? EY's main competitors are the other Big Four professional services firms: Deloitte, PwC, and KPMG. In strategy consulting, EY also competes with McKinsey & Company, Boston Consulting Group, and Bain & Company through its EY-Parthenon division. ### How can I contact EY? You can contact EY through their global website at www.ey.com or reach out to local member firms in over 150 countries. For career opportunities, visit EY's careers portal specific to your region. ### Is EY hiring? Yes, EY continues to recruit talent globally despite recent workforce adjustments. The firm maintains approximately 393,000 employees and offers comprehensive benefits, professional development, and flexible work arrangements. EY has been recognized on Fortune's 100 Best Companies to Work For list in 2025. ### What's the latest news about EY? In 2025, EY launched the EY.ai Agentic Platform with NVIDIA AI featuring 150 AI agents. Janet Truncale became Global Chair and CEO in July 2024, launching the 'All in' strategy. The firm announced strategic alliances with Zscaler and SAP Fioneer, and was recognized in the 2025 Gartner Magic Quadrant. ### What is EY's market position? EY is the third-largest Big Four firm by revenue ($51.2B in 2024), behind Deloitte ($67.2B) and PwC ($55.4B). The firm employs 393,000 people and is particularly strong in audit and assurance services, which generate the highest proportion of revenue among Big Four competitors. ### What are EY's future plans? Under CEO Janet Truncale's 'All in' strategy launched in July 2024, EY aims to shape the next $50 billion in revenue through AI integration, technology transformation, and sector-focused growth. The firm is investing heavily in its EY.ai platform, aligning 9,000 technology risk professionals to assurance, and expanding strategic partnerships. ## Tags b2b, enterprise, fortune500, global, services, saas --- *Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-14.*