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Deloitte
Professional Services

Deloitte Company Overview

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Deloitte

● Active
Professional Services · London, UK · Est. 1845
Professional ServicesAuditConsultingTaxRisk Advisory↗ Website
$50B
Valuation
$68.7B
Revenue
460k+
Employees
1845
Founded

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.

Recent Press
5 items
Partnership·2026-01-20
Deloitte Announces Alliance with Pearson to Deliver AI-Powered Workforce Development Solutions
Deloitte and Pearson announced an alliance in January 2026 to co-develop end-to-end AI-powered talent, leadership, and workforce development solutions for global enterprises and government organizations.
Press Release·2026-01-15
Deloitte Releases 2026 State of AI in the Enterprise Report: Worker AI Access Up 50% in 2025
Deloitte's 2026 State of AI report found worker AI access rose 50% in 2025, with 25% of leaders reporting transformative AI impact — more than double from a year ago — and agentic AI deployment planned by 74% of companies within two years.
Press Release·2026-01-06
Deloitte at CES 2026: Igniting the Next Wave of Innovation
Deloitte leaders shared strategies at CES 2026 in Las Vegas on AI-driven business transformation, helping enterprises bridge the gap between AI promise and reality across technology, media, and telecommunications industries.
Press Release·2025-11-26
Deloitte 2026 TMT Predictions: $100 Billion to Be Invested in Sovereign AI Compute Globally
Deloitte's 2026 Technology, Media & Telecommunications Predictions forecast nearly $100 billion in global sovereign AI compute investment, with agentic AI and AI-ready data centers becoming the engines of enterprise transformation.
Partnership·2025-10-15
Deloitte Expands AWS AI Partnership for Enterprise AI Initiatives in India and Globally
Deloitte expanded its AI partnership with AWS in 2025, focusing on accelerating enterprise AI adoption globally including a major push in India, combining Deloitte's consulting expertise with AWS's AI infrastructure.
Company History
9 milestones
William Welch Deloitte opened his accounting practice in London in 1845, initially focusing on railway company audits — laying the foundation for what would become the world's largest professional services firm.

Deloitte Organization Structure & Team

Org Chart
460,000 employees · Click a leader to explore their team
481,500 across 12 departments
Chief Executive Officer
Joe Ucuzoglu
Jonathan Gandal — Departments
· 481500 people across 12 depts

Deloitte Financials, Revenue & Market Share

Annual Revenue
$68.7B
+2% vs prior year
YoY Growth
+2%
From $50.2B to $68.7B
Revenue / Employee
$146K
Annual revenue per full-time employee
Revenue Growth
2021
2022
2023
2024
2025
$50.2B
$59.3B
$64.9B
$67.2B
$68.7B
Market Share
Global Professional Services (Big Four + Top Advisory)
16%
share
Deloitte
16%
PwC
15%
EY
13%
KPMG
11%
Accenture
15%
$403.2B
TAM
$72.6B
SAM
$7.3B
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

Deloitte Internal Tools & Processes

Internal Tools
12 departments
Audit & Assurance90000 people · 3 roles
Standards & Certifications
10 standards
Compliance frameworks, security audits, and quality certifications this company maintains.
Security
ISO 27001
Certified
Deloitte maintains ISO 27001 certification across its global information security management systems, protecting client audit and advisory data processed through Deloitte's global delivery network.
Security
SOC 2 Type II
Certified
Deloitte's technology platforms including Deloitte Omnia and Deloitte Detect undergo SOC 2 Type II audits, providing clients with independent assurance over security and availability controls.
Regulatory
PCAOB Registered
Compliant
Deloitte is registered with the PCAOB, enabling its US member firm to audit public companies listed on US exchanges and comply with Sarbanes-Oxley attestation requirements.
Regulatory
IFRS Compliant
Compliant
Deloitte's audit practice applies IFRS standards across 140+ countries, enabling audit of multinational clients reporting under IFRS including in the EU, UK, Canada, and Asia-Pacific.
Privacy
GDPR
Compliant
Deloitte processes personal data through its tax, HR consulting, and BPO services for European clients, maintaining full GDPR compliance across EU member firm operations and global data transfer agreements.
Environmental
ISO 14001
Certified
Deloitte maintains ISO 14001 environmental management certification as part of its WorldClimate commitment to achieve net-zero emissions by 2030 across its global operations and supply chain.
Quality
ISAE 3402
Certified
Deloitte's outsourced finance, HR, and tax operations are audited under ISAE 3402, providing client audit committees with independent assurance over Deloitte's controls for managed service delivery.
Quality
CMMI Level 5
Certified
Deloitte's technology delivery centers maintain CMMI Level 5 maturity for software development processes, ensuring the highest level of engineering process optimization for large government and enterprise clients.
Security
FedRAMP Authorized
Certified
Deloitte Government & Public Services holds FedRAMP authorizations for select cloud platforms, enabling delivery of sensitive IT advisory and managed services to US federal government agencies.
Regulatory
AICPA GAAS
Compliant
Deloitte's US audit practice complies with GAAS and GAAP standards set by the AICPA, forming the regulatory basis for all Deloitte financial statement audits of US-domiciled public and private entities.

Deloitte Interview Preparation

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

Deloitte Products & Competitors

Product Suite
6 products · select one to explore
Professional Services
Professional Services
Deloitte Audit & Assurance
Independent assurance that builds trust in capital markets

Deloitte Audit & Assurance delivers external audit services to public and private companies, applying AI-driven analytics and deep industry expertise to provide high-quality, independent financial statement opinions. The practice serves over 20% of Fortune 500 companies and uses Deloitte proprietary audit platforms to enhance quality and efficiency.

Use Cases
Conducting integrated audits of financial statements and internal controls over financial reporting for SEC registrantsPerforming sustainability and ESG assurance engagements to validate corporate non-financial disclosuresUsing Deloitte AI-powered audit tools to analyze 100% of transaction populations rather than sample-based testing
No image
Key Customers
PG
Procter & Gamble
CAT
Caterpillar
UNH
UnitedHealth Group
Competitive Intelligence
VSPwC Audit
THEM

PwC Audit is the assurance practice of PricewaterhouseCoopers, offering external audit and related services to public and private companies globally, with particular strength in financial services and technology sector clients.

EDGE

Deeper industry-specific audit analytics tools and AI-driven risk assessment across more sectors

VSEY Assurance
THEM

EY Assurance provides external audit, financial accounting advisory, and climate change and sustainability services, with a focus on serving growth-oriented companies and major global multinationals.

EDGE

Stronger integration of ESG assurance with financial statement audit for sustainability-focused clients

VSKPMG Audit
THEM

KPMG Audit delivers financial statement audits and regulatory compliance services, with recognized depth in banking, insurance, and asset management clients through its global network.

EDGE

Larger Fortune 500 audit client base with proprietary Illuminate audit platform for continuous monitoring

Related Companies

EY logo
EY
Professional Services
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.
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.