EY

Ernst & Young (EY) is a leading multinational professional services firm, part of the Big Four, dedicated to building a better working world through integrated audit, assurance, tax, strategy, consulting, and transaction services. Headquartered in London, EY operates in over 150 countries with approximately 400,000 employees, serving major corporations, governments, and organizations globally.​

History and Evolution

EY traces its roots to the 19th century, with Arthur Young founding his firm in the UK in 1849 and Alwin Ernst establishing his US practice in 1903. The modern EY formed in 1989 via the merger of Ernst & Whinney and Arthur Young, expanding aggressively amid globalization and tech advancements. In Mexico, EY marks 90 years in 2024, pioneering innovations like live tax broadcasts and supporting key firms in digital transformation and complex decisions. The firm rebranded from Ernst & Young to EY in 2013, emphasizing a unified global brand focused on trust, innovation, and societal impact.[ from prior]​​

Core Services

EY's integrated lines include Assurance (audit, forensic, financial advisory), Tax & Law (compliance, transfer pricing, international trade), Consulting (digital transformation, cybersecurity, AI strategies), Strategy & Transactions (M&A due diligence, valuations, restructurings), and emerging areas like ESG, sustainability, and managed services. Highlights feature AI-driven growth engines, healthcare cyber resilience, and M&A outlooks predicting strong US deal volume in 2026. EY excels in helping clients navigate regulatory complexities, risk management, and nature-positive reporting.​

Recognition and Focus

EY advises Fortune 500 firms across industries like healthcare, tech, and energy, with multidisciplinary teams leveraging data, AI, and diverse talent for client value creation. Recent emphases include accelerating change via technology, cost optimization beyond cuts, and robust economic forecasting amid mixed signals. In Latin America, including Mexico with 4,000+ professionals, EY drives transparency, efficiency, and long-term growth.​

EY's purpose-driven approach prioritizes bold questions, client transformation, and global confidence in capital markets.

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