Deloitte LLP

Is Deloitte LLP publicly traded?
No. Deloitte is a private partnership owned by its partners and cannot be publicly traded.

Who owns Deloitte?
Its roughly 7,000 US partners and principals own Deloitte LLP. The global brand belongs to DTTL, a UK coordinating entity owned by the member firms.

Is Deloitte a company or a network?
Both. Deloitte LLP is a single US partnership; globally, Deloitte is a network of legally separate member firms coordinated by DTTL.

When was Deloitte founded?
1845 in London by William Welch Deloitte. The modern US firm formed through the 1989 Deloitte & Touche merger.

How big is Deloitte?
$35.7 billion in US FY2025 revenue, approximately 180,000 US employees, and $70.5 billion in global revenue across 473,000-plus people.

What does Deloitte do?
Audit and assurance, tax, management and technology consulting, and risk and financial advisory services.

William Welch Deloitte founded his London practice in 1845 and made history in 1849 as the first independent auditor appointed to a public company, the Great Western Railway. The firm expanded through Britain's industrial century and established a US presence in the 1890s, auditing American railroads and industrials.

The modern firm is a merger product. Deloitte, Haskins & Sells combined with Touche Ross in 1989 to form Deloitte & Touche, one of the decade's mega-mergers in accounting. The 2002 collapse of Arthur Andersen following Enron consolidated the profession into the Big Four, and Deloitte absorbed both clients and talent from the wreckage.

The strategic divergence came next. As Sarbanes-Oxley constrained audit-adjacent services, Deloitte rebuilt consulting aggressively, acquiring Monitor Group in 2013 for strategy capability and investing across technology implementation, human capital, and risk advisory. Consulting and advisory grew to generate the majority of global revenue, the basis of its size leadership today.

Under US CEO Jason Girzadas since June 2023 and global CEO Joe Ucuzoglu since 2023, the firm has invested heavily in AI platforms and delivery, announced a 2024 reorganization consolidating member firm structures to cut complexity, and continued hiring at scale, with nearly 100,000 global hires in fiscal 2025. US revenue reached $35.7 billion in FY2025 on aggregate global revenue of $70.5 billion.

Deloitte publishes an annual Global Impact Report with science-based net-zero commitments, workforce diversity metrics, and its WorldClass skills and education programs. It is also a leading provider of sustainability assurance to clients, a growing business line as reporting mandates expand.

Its ethical posture is dominated by professional obligations: auditor independence rules, PCAOB inspection results (its latest US deficiency rate was among the lowest of the Big Four), and the conflicts inherent in consulting for companies it audits, managed through strict independence walls that regulators periodically test.

Deloitte consistently tops Big Four rankings by revenue and headcount, appears on Vault's prestige rankings, Fortune's 100 Best Companies to Work For, and Universum's most attractive employer lists for business students globally. Its individual practices win ALM and Forrester consulting leader designations.

Deloitte's controversy profile matches its scale. Recent matters include the 2025 DOJ False Claims Act resolution of $21.5 million over billing practices; China's 2023 regulatory action that temporarily suspended its mainland audit practice and imposed a record fine for the sector; periodic PCAOB inspection findings; and litigation exposure from audits of failed companies.

The structural issue is independence: regulators in the US, UK, and EU continue scrutinizing whether consulting growth compromises audit objectivity, and the firm's periodic independence fines reflect that tension. None of these has threatened its franchise, but they are recurring features of its regulatory environment.