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EY
Professional Services

EY Company Overview

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EY

● Active
Professional Services · London, UK · Est. 1989
Professional ServicesAuditAdvisoryTaxConsulting↗ Website
$45B
Valuation
$51.5B
Revenue
393k+
Employees
1989
Founded

EY (formerly Ernst & Young) is one of the world's largest professional services networks, providing audit, tax, advisory, and consulting services across more than 150 countries. Serving Fortune 500 companies, governments, and high-growth businesses, EY helps organizations navigate complex financial, regulatory, and strategic challenges.

Recent Press
5 items
Press Release·2026-01-15
EY CEO Survey: 69% of CEOs Expect AI to Maintain or Grow Headcount Through 2026
EY's CEO research found that 69% of respondents believe AI investments will maintain or grow employment levels, with the share expecting AI-driven headcount reductions falling from 46% in January 2025 to 24% by December 2025.
Product Launch·2025-12-10
EY Launches Physical AI Platform with NVIDIA and Opens EY.ai Lab
EY launched a new Physical AI platform built on NVIDIA accelerated computing and opened its EY.ai Lab — the first in a global network of facilities dedicated to helping organizations integrate AI into physical environments.
Product Launch·2025-12-01
EY Launches EY.ai Value Blueprints to Help Businesses Become AI-Native Enterprises
EY launched EY.ai Value Blueprints in December 2025, a framework providing organizations with a cohesive approach to AI value creation, targeting enterprise-scale AI adoption beyond pilot programs into full operational deployment.
Partnership·2025-09-20
EY Launches EY.ai for Risk in Partnership with NVIDIA to Modernize Risk Management
EY launched EY.ai for Risk, developed with NVIDIA, consolidating risk technology and knowledge into a unified agentic AI system built on the EY.ai platform to help clients address modern risk management complexity.
Product Launch·2025-04-15
EY Integrates AI into Global Assurance Platform with $1 Billion Technology Investment
EY announced large-scale AI integration into its global Assurance technology platform as part of a $1 billion technology investment, including EYQ Assurance Knowledge — a GenAI capability for audit accounting content search.
Company History
10 milestones
Frederick Whinney joined Harding & Pullein in 1849, laying the foundation for what would become Ernst & Young through a chain of mergers spanning over a century.

EY Organization Structure & Team

Org Chart
392,995 employees · Click a leader to explore their team
373,000 across 12 departments
Chief Executive Officer
Janet Truncale
Julie Boland — Departments
· 373000 people across 12 depts

EY Financials, Revenue & Market Share

Annual Revenue
$51.5B
+1% vs prior year
YoY Growth
+1%
From $40.0B to $51.5B
Revenue / Employee
—
Annual revenue per full-time employee
Revenue Growth
2021
2022
2023
2024
2025
$40.0B
$45.4B
$49.4B
$51.2B
$51.5B
Market Share
Professional Services
13%
share
EY
13%
Deloitte
16%
PwC
15%
KPMG
11%
Accenture
12%
—
TAM
—
SAM
—
SOM
Revenue Streams
Core Products/Services70%
Value-Added Services20%
Other Revenue10%
Business Units
Core Business70%
Primary product and service delivery
Growth Initiatives20%
New markets and product expansion
Corporate & Admin10%
Central functions and shared services

EY Internal Tools & Processes

Internal Tools
12 departments
Assurance95000 people · 3 roles
Standards & Certifications
10 standards
Compliance frameworks, security audits, and quality certifications this company maintains.
Security
ISO 27001
Certified
EY maintains ISO 27001 certification across its global information security management systems, ensuring client audit and tax data is protected to internationally recognized standards throughout EY engagements.
Security
SOC 2 Type II
Certified
EY's technology platforms — including EY Canvas and EY.ai — undergo SOC 2 Type II audits, providing clients with independent assurance that EY's controls over data security, availability, and confidentiality are effective.
Regulatory
PCAOB Registered
Compliant
EY is registered with the Public Company Accounting Oversight Board (PCAOB), a regulatory requirement allowing EY to audit US-listed public companies and comply with Sarbanes-Oxley audit standards.
Regulatory
IFRS Compliant
Compliant
EY's audit practice is fully compliant with International Financial Reporting Standards (IFRS), enabling EY to audit multinational clients reporting under IFRS in more than 140 jurisdictions globally.
Privacy
GDPR
Compliant
EY processes personal data of millions of client employees through its tax, payroll advisory, and HR consulting services, and maintains full GDPR compliance across its EU member firm operations and global data transfer mechanisms.
Quality
ISAE 3402
Certified
EY's Tax and Finance Operate managed services are audited under ISAE 3402 (equivalent to SSAE 18), providing clients with independent assurance over EY's internal controls for outsourced finance and tax processes.
Quality
ISO 9001
Certified
EY applies ISO 9001 quality management standards across select consulting and managed services delivery operations, ensuring consistent engagement delivery quality and continuous improvement in client-facing processes.
Regulatory
AICPA GAAS
Compliant
EY's US audit practice adheres to Generally Accepted Auditing Standards (GAAS) set by the AICPA, as well as GAAP requirements, forming the regulatory basis for all EY financial statement audits of US-domiciled entities.
Environmental
ISO 14001
Certified
EY has committed to net-zero operations by 2025 and maintains ISO 14001 environmental management certification at selected office locations, supporting EY's Carbon Footprint Reduction strategy across its global real estate portfolio.
Security
FedRAMP Authorized
In Progress
EY is pursuing FedRAMP authorization for select EY.ai and cloud-based advisory tools to enable secure deployment of AI-driven audit and consulting services to US federal government agency clients.

EY Interview Preparation

Interview Prep
Role-specific interview questions and keywords. Select a department, then click any role to prepare.
Assurance· 3 roles

EY Products & Competitors

Product Suite
6 products · select one to explore
Professional Services
Platform
Assurance
Trust and confidence in financial reporting.

EY Assurance provides audit, financial statement review, and attestation services to some of the world's largest public companies, ensuring transparency and reliability for investors and regulators. EY auditors serve clients across sectors including technology, energy, consumer goods, and financial services, providing independent opinions on financial data accuracy.

Use Cases
Conducting statutory audits for publicly listed multinational corporationsProviding IPO readiness reviews and financial statement attestationDelivering ESG assurance reports for corporate sustainability disclosures
Assurance
Key Customers
AMZN
Amazon
META
Meta
NFLX
Netflix
Competitive Intelligence
VSDeloitte Audit
THEM

Deloitte's audit practice serves over 6,000 public company clients globally, providing statutory audit and assurance services with deep sector expertise across financial services, consumer, and technology industries.

EDGE

EY holds stronger audit relationships in tech and media sectors globally

VSPwC Audit
THEM

PwC's assurance practice is one of the largest in the world, auditing hundreds of Fortune 500 companies and offering integrated assurance services tied to risk management and compliance advisory.

EDGE

EY's PCAOB inspection results rank among the best of the Big 4 in recent years

VSKPMG Audit
THEM

KPMG's audit business focuses heavily on financial services and industrial clients, providing audit and related advisory services with a network spanning 143 countries.

EDGE

EY's global audit methodology is more consistently applied across member firm networks

Related Companies

Accenture logo
Accenture
Professional Services
Accenture is a global professional services company providing consulting, technology, and outsourcing services across more than 120 countries, serving clients in financial services, health, communications, and government. With 779,000 employees, Accenture helps organizations build their digital core, optimize operations, accelerate growth, and create sustainable value.
Deloitte logo
Deloitte
Professional Services
Deloitte is the world's largest professional services network by revenue, providing audit, consulting, tax, risk advisory, and financial advisory services to clients across every major industry in more than 150 countries. With 460,000 employees and $67.2B in FY2024 revenue, Deloitte serves the majority of Fortune 500 companies and advises governments on major economic and regulatory challenges.