Deloitte

Deloitte Touche Tohmatsu Limited

File:Deloitte logo.svg Deloitte logo since 2016
Company type	Private company limited by guarantee
Industry	Professional services
Founded	1 January 1845 (1845-01-01) in London, United Kingdom
Founder	William Welch Deloitte
Headquarters	London , United Kingdom
Area served	Worldwide (over 150 countries)
Key people	William G. Parrett (former CEO), Jerry Leamon (former global Clients and Markets leader)
Products	Audit, consulting, financial advisory, risk advisory, tax, legal services
Number of employees	460,000 (2024)
Website	www.deloitte.com

Deloitte is a global professional services network headquartered in London, United Kingdom. It stands as the largest professional services network worldwide by both revenue and number of employees, and is recognized as one of the Big Four accounting firms alongside EY, KPMG, and PwC. The Deloitte network is composed of member firms operating under Deloitte Touche Tohmatsu Limited (), a private company limited by guarantee registered in England and Wales.

The firm was established in 1845 by accountant William Welch Deloitte in London and expanded its presence to the United States by 1890. In 1972, it merged with Haskins & Sells, forming Deloitte Haskins & Sells, and later combined with Touche Ross in 1989 to become Deloitte & Touche. The international organization adopted the name Deloitte Touche Tohmatsu in 1993, which was eventually shortened to Deloitte. In 2002, it incorporated the UK operations of Arthur Andersen along with several offices across Europe and America. Among its notable acquisitions is the strategy consulting firm Monitor Group in 2013. Deloitte functions as a UK private company supported by an extensive global alliance of independent legal entities.

Deloitte delivers services in audit, consulting, financial advisory, risk advisory, tax, and legal fields. With a workforce of roughly 460,000 professionals worldwide, it maintains operations in over 150 nations. For the fiscal year 2024, Deloitte reported total revenues amounting to US$67.2 billion. The company has also been involved in prominent sponsorships including the 2012 Summer Olympics.

In September 2017, Deloitte was targeted by a major cyberattack that compromised sensitive client information and employee data. The firm has additionally encountered legal challenges connected to various audit engagements.

Early history

The origins of Deloitte trace back to 1845 when William Welch Deloitte established an office on Basinghall Street in London. He became the first independent auditor for a public company, specifically the Great Western Railway. By 1880, Deloitte had expanded operations to New York City. From 1855 until 1905, the firm was located at No. 4 Lothbury before relocating to No. 54 London Wall Buildings.

Deloitte inaugurated its first international branch on Wall Street in 1890, managed by Edward Adams and P.D. Griffiths; soon after, additional offices opened in Chicago and Buenos Aires. Griffiths later ascended to partnership status in the London office.

In 1896, Charles Waldo Haskins and Elijah Watt Sells founded Haskins & Sells in New York City, notable for being among the earliest major auditing firms established by Americans rather than British founders.

In 1898, George Touche launched a London office and partnered with John Ballantine Niven in 1900 to create Touche Niven in New York.

On March 1, 1933, Colonel Arthur Hazelton Carter from Haskins & Sells testified before the U.S. Senate advocating for compulsory independent audits for publicly traded companies.

In 1947, George Bailey, an accountant from Detroit, founded his own practice which merged within a year with Touche Niven and A. R. Smart to form Touche, Niven, Bailey & Smart. Under Bailey’s leadership, the firm experienced rapid growth by establishing a dedicated management consulting division and forging alliances with Canadian and British firms connected to George Touche. Renamed Touche Ross in 1969, it expanded internationally including through Japan’s Tohmatsu Aoki & Co joining in 1975. In 1972, Robert Trueblood, Chairman of Touche Ross, chaired the committee that recommended establishing the Financial Accounting Standards Board.

Deloitte relocated its headquarters to No. 128 Queen Victoria Street, London in 1964. In 1972, Deloitte (then known as Deloitte, Plender, Griffiths & Co.) merged with Haskins & Sells to become Deloitte Haskins & Sells.

In 1989, Deloitte Haskins & Sells combined with Touche Ross in the United States to form Deloitte & Touche under leaders J. Michael Cook and Edward A. Kangas. Some member firms of Deloitte Haskins & Sells opted out of this merger and joined Coopers & Lybrand (which later became part of PwC). Likewise, certain Touche Ross member firms merged elsewhere. In the UK market, Touche Ross merged with Spicer & Oppenheim in 1990.

Recent history

During the US-driven mergers that led to the formation of Deloitte & Touche, the firm encountered difficulties with naming rights because it did not have exclusive control over the names "Deloitte" and "Touche Ross," as major firms in the UK and Australia chose not to participate. Initially, the name DRT International was adopted, combining Deloitte, Ross, and Tohmatsu, before transitioning to Deloitte Touche Tohmatsu in 1993.

In 1995, Deloitte & Touche launched Deloitte & Touche Consulting Group, which is now known as Deloitte Consulting. The acquisition of Eclipse in 2000 strengthened its capabilities in internet design, eventually evolving into Deloitte Online and later Deloitte Digital.

After Arthur Andersen's collapse in 2002, Deloitte absorbed Andersen’s UK practice—the largest outside the United States—along with other international units, significantly expanding its global reach. The 2005 purchase of Beijing Pan-China CPA established Deloitte as the leading accounting firm in China and was part of a $150 million investment plan over five years.

In 2007, Deloitte created a competitive intelligence division by recruiting former CIA personnel. Two years later, in 2009, it acquired BearingPoint’s North American public sector consulting business for $350 million. The 2010 acquisition of Drivers Jonas broadened Deloitte’s expertise in real estate advisory services.

To enhance its sustainability portfolio, Deloitte acquired DOMANI Sustainability Consulting and ClearCarbon Consulting in 2011. The following year, it entered the mobile application market by acquiring Übermind and expanded its healthcare analytics capabilities through Recombinant Data Corporation, culminating in the launch of ConvergeHEALTH by Deloitte in 2013.

Following Monitor Group’s bankruptcy in 2013, Deloitte purchased its strategy consulting division. In 2014, the firm introduced Rubix, a blockchain consulting service, and established blockchain laboratories in Dublin (2016) and New York (2017). It also collaborated with platforms such as Waves and joined the Ethereum Enterprise Alliance.

Deloitte acquired Heat, a San Francisco-based digital marketing agency renowned for projects with EA Sports and Hotwire.com, in 2016. By that time, Deloitte Digital employed approximately 7,000 professionals and generated revenues of $2.1 billion. That same year marked a strategic alliance with Apple aimed at increasing enterprise sales of Apple products through more than 5,000 Deloitte consultants.

The establishment of Deloitte North West Europe in 2016 merged seven member firms—including those from the UK and Switzerland—into an entity generating €5 billion in revenue with a workforce of 28,000 professionals. A €200 million investment over three years was planned to enhance service offerings.

In March 2022, responding to the Russo-Ukrainian conflict, Deloitte suspended operations in Russia and Belarus and separated these practices from its global network. That month also saw the acquisition of Etain, a digital transformation company based in Northern Ireland.

By June 2022, reports suggested that Deloitte was contemplating a division into separate accounting and advisory entities, following similar restructuring moves by Ernst & Young.

In November 2023, Deloitte secured a contract with Henchmann to provide AI-powered software for contract drafting and negotiation that analyzes legal documents.

In 2024, Deloitte joined forces with Nvidia, Microsoft, and Amazon Web Services to invest $40 million in the Cancer AI Alliance to support cancer research efforts.

Facing economic pressures in May 2025, Deloitte announced plans to limit salary increases and reduce bonuses by 20% within its UK consulting division.

Name and branding

In 1989, a global merger between Deloitte, Haskins & Sells and Touche Ross resulted in the creation of Deloitte & Touche. However, within the United Kingdom, Deloitte, Haskins & Sells combined forces with Coopers & Lybrand, which is now incorporated into PwC.

The UK-based private company operates under the official name Deloitte Touche Tohmatsu Limited, originally introduced as DTT International in 1989. The rebranding initiative in 2003 was spearheaded by then-CEO William G. Parrett alongside Jerry Leamon, who led global Clients and Markets.

Deloitte currently functions as an international network of independent firms providing a range of services including audit, consulting, financial advisory, risk management, and tax solutions to select clients worldwide.

In 2008, Deloitte launched the "Always One Step Ahead" (AOSA) branding platform to reinforce its vision: "To be the Standard of Excellence." AOSA embodies the firm’s value proposition rather than serving as a tagline. This strategy is complemented by the Green Dot advertising campaign.

The company refreshed its visual identity in June 2016 by adopting a new logo featuring black typography replacing the previous blue.

Within India, Deloitte operates under several brand names such as A.F.Ferguson & Co., S.B. Billimoria, C.C. Choksi & Co., P.C. Hansotia, Fraser & Ross, and Deloitte Haskins & Sells (India).

Legal structure

Historically, Deloitte and its member firms functioned as a Swiss , an unincorporated association model. Effective from 31 July 2010, member firms became part of Deloitte Touche Tohmatsu Limited (DTTL), a UK private company limited by guarantee without share capital. Each member firm continues as an autonomous legal entity, regulated by the laws and professional standards applicable in its jurisdiction.

This organizational framework is typical among professional service networks and serves to limit vicarious liability between members. Neither DTTL nor its network firms have authority to bind one another; professional services are exclusively delivered by individual member firms. This arrangement shields members from liability arising from other firms’ actions and supports their participation in the IFAC Forum of Firms.

In 2019, partners in the UK earned an average compensation of £882,000. By 2023, Deloitte UK partners’ average remuneration surpassed £1 million for the third year running.

Services

Deloitte’s member firms offer a broad spectrum of services across multiple disciplines. Depending on the country, these firms may operate as a single entity or through subsidiaries under a parent organization.

Audit

The audit practice encompasses traditional accounting and auditing services along with internal audit functions, IT control assurance, and assurance services tailored to Media & Advertising sectors.

Investors in Guangdong Kelon Electrical Holdings Company Limited claimed that Deloitte failed to warn them about the company’s deteriorating financial condition. Deloitte asserted that it conducted its duties appropriately, with its global CEO publicly defending the firm’s performance. The firm audited Kelon from 2002 through 2004; in 2004 it issued a qualified opinion concerning sales figures, returns, and allowances before ultimately resigning due to client management’s unwillingness to adhere to sound financial practices.

Consulting

Consulting represents Deloitte's most significant division, accounting for more than 40% of the company's total revenue in 2021. This segment delivers expertise in areas such as strategy, analytics and mergers and acquisitions, customer and marketing solutions, core business processes, human capital management, as well as enterprise technology and performance improvement.

Within the healthcare sector, Deloitte has been instrumental in advancing "strategic billing" practices, notably after appointing former U.S. Health Secretary Tommy Thompson in 2005. By 2011, Deloitte had secured the top global position by revenue across various healthcare consulting domains including life sciences, payers, providers, and government health agencies.

Deloitte was responsible for deploying a $95 million SAP human resources system for the Los Angeles Unified School District (LAUSD). Early implementation challenges led to payroll inaccuracies that impacted teacher payments. By the close of 2007, LAUSD had compensated Deloitte $140 million to address these complications. By 2008, payroll error rates reportedly declined to under 1%.

The firm also contributed to California’s statewide court case management system project, which was initially allocated a budget of $260 million but eventually escalated close to $500 million with estimates rising to $2 billion. None of the courts achieved full operational status; consequently, the Judicial Council discontinued the initiative in 2012 due to escalating deployment expenses and financial limitations.

Financial advisory

The financial advisory practice encompasses services related to corporate finance such as dispute resolution, personal and commercial bankruptcy support, forensic investigations, e-discovery and document review, advisory consulting, mergers and acquisitions guidance, capital project consulting, and valuation assessments.

Tax and legal

Deloitte’s tax and legal division assists clients in enhancing their net asset value through transfer pricing strategies and international tax planning tailored for multinational enterprises. It also focuses on minimizing tax obligations, implementing tax compliance systems, and providing counsel on the tax consequences of various business decisions.

In 2013, the charity ActionAid accused Deloitte of advising companies on leveraging Mauritius to avoid significant tax payments in impoverished African nations. Deloitte countered that it guides clients to utilize lawful structures under double-taxation treaties aimed at reducing tax burdens legitimately, emphasizing that such practices do not constitute tax evasion but rather encourage investment.

GovLab

GovLab serves as Deloitte Consulting LLP's think tank dedicated to the Federal Government sector with an emphasis on innovation and reform within government operations. Established in 2010 and located at New York University, GovLab conducts research into emerging trends, technological advancements, and evolving business models influencing public sector functions.

Offices

Deloitte maintains a presence in over 700 locations spanning more than 150 countries worldwide, employing approximately 457,000 individuals as of 2023.

Operations in India

Deloitte commenced its activities in India during the late 1990s alongside KPMG. Due to regulations from the Institute of Chartered Accountants of India (ICAI) prohibiting foreign firms from conducting audits directly, Deloitte performs audit services through C.C.Chokshi & Co., an Indian firm it allied with in 1998. After India’s economic liberalization in 1992, Deloitte secured a license permitting direct operations. In 2004, A. F. Ferguson & Co., a firm with over a hundred years of history in India, merged into Deloitte alongside other affiliates such as CC Chokshi & Company and Fraser & Ross.

Deloitte India primarily caters to domestic clientele while Deloitte US-India (USI), which operates under Deloitte US but is based in India, serves clients from the United States.

Awards and recognition

In 2017, Deloitte was acknowledged as one of the UK's premier workplaces, standing alongside KPMG, PwC, and PA Consulting Group. That same year, it was also recognized by Fatherly as one of the top 10 employers offering paternity leave.

For the tenth year running in 2018, Inside Public Accounting ranked Deloitte as the leading accounting firm. The firm's tax division has received international commendations from ITR, notably securing the Americas best transfer pricing award three years consecutively. Additionally, Gartner consistently positioned Deloitte at the top globally in "Security Consulting Services" based on revenue.

In 2019, Fortune listed Deloitte among its 100 Best Companies to Work For, while Bloomberg Business identified it as the premier place to begin a career. Gartner also recognized Deloitte as the number one consulting service provider worldwide by revenue for 2019, 2020, and 2021.

1MDB scandal

Deloitte’s Malaysian branch agreed in 2021 to pay $80 million to resolve allegations concerning its audits of the troubled state investment fund 1Malaysia Development Berhad (1MDB) and its subsidiary SRC International during the period from 2011 to 2014. Malaysian and U.S. authorities claim that senior officials and their associates misappropriated at least $4.5 billion from 1MDB between 2009 and 2014.

Adelphia Communications

On April 26, 2005, the Securities and Exchange Commission announced that Deloitte had agreed to a $50 million settlement over charges related to Adelphia Communications’ financial statements from the year 2000. Later reports suggested that the settlement amount might have reached as high as $210 million or $167.5 million.

Autonomy

Following Hewlett-Packard’s acquisition of British software company Autonomy in 2011, accounting discrepancies led to an $8.8 billion impairment charge. In May 2018, the UK Financial Reporting Council (FRC) launched disciplinary proceedings against Deloitte, which audited Autonomy at that time, accusing audit partners of failing to challenge misleading information and lacking impartiality. This action followed U.S. legal convictions of former Autonomy executive Sushovan Hussain for fraud.

In 2020, Deloitte received a record £15 million fine from the FRC, with two former partners involved in the audits also facing sanctions.

Banro Corporation audit independence fine

The Public Company Accounting Oversight Board imposed a $350,000 fine on Deloitte Canada for breaches of independence rules during three consecutive audits of Banro Corporation, a Canadian gold mining firm.

Bondfield Construction

Deloitte partners Felice "Phil" Iorio and Steve Kostich were charged with professional misconduct by CPA Ontario related to their audits of Bondfield Construction, which collapsed after filing for creditor protection in April 2019. Former executives of Bondfield were sued over losses attributed to fraudulent invoicing.

Carillion

Before Carillion’s liquidation in January 2018, Deloitte acted as its internal auditor. The Parliamentary inquiry’s final report harshly criticized Deloitte’s involvement in Carillion’s financial disclosures, describing their conduct as both "excoriating" and "damning."

China Huarong Asset Management Co.

In March 2023, Deloitte was penalized 211.9 million yuan (approximately $30.8 million) by China's Ministry of Finance due to audit shortcomings identified in the review of China Huarong Asset Management Co., particularly citing insufficient professional skepticism. Additionally, Huarong received a fine of 800,000 yuan (around $116,227) for its involvement in these audit deficiencies.

Johnston Press audit

The Financial Reporting Council, the UK’s accounting oversight body, imposed a £362,500 fine on Deloitte's UK branch in 2020 and issued formal reprimands to both the firm and an unnamed audit partner for inadequacies found in the audit of Johnston Press.

Livent

After the entertainment company Livent became insolvent, the Ontario Superior Court of Justice ordered Deloitte in April 2014 to pay $84.75 million for failing to exercise appropriate care during audits of Livent’s financial statements from 1993 to 1998. This judgment was upheld by the Ontario Court of Appeal in January 2016. However, in December 2017, the Supreme Court of Canada partially overturned the decision, restricting Deloitte’s liability to negligence related only to the 1997 fiscal year audit and lowering damages to $40.43 million.

Mitie plc

Deloitte’s UK affiliate was fined £2 million by the Financial Reporting Council in April 2022 due to audit failures connected with the 2016 examination of British outsourcing company Mitie plc.

Philip Services Corp

The collapse of Canadian metals recycler Philip Services Corp—attributed to accounting irregularities and internal fraud—led to a US class action against Deloitte & Touche LLP, Philip’s Canadian auditor. The case was settled in 2007 with Deloitte agreeing to pay $50.5 million.

Serco Geografix Ltd.

On 4 July 2019, Deloitte was fined £4.2 million plus £300,000 in investigation expenses by the Financial Reporting Council for inadequate auditing of Serco Group’s subsidiary, Serco Geografix, during 2011 and 2012. Audit partner Helen George also faced a £97,500 fine for failing to maintain professional competence and due care.

SIG plc

In December 2022, Deloitte’s UK affiliate received a £0.9 million (approximately $1.1 million) fine from the Financial Reporting Council for insufficient audit evidence related to rebate arrangements and debtor balances during the 2015/16 audit of the British branch of Swiss construction materials company SIG plc.

Standard Chartered

In August 2012, Deloitte Financial Advisory Services (DFAS) denied accusations of deliberately omitting key information to assist Standard Chartered in concealing money laundering activities linked with Iran. DFAS agreed to a $10 million settlement with New York State, committed not to accept new business from specified New York banks for one year, and implemented reforms aimed at preventing future violations. The state regulator found no proof that DFAS intentionally facilitated money laundering.

Steinhoff International

In June 2018, Dutch investors’ association VEB initiated class action litigation against Deloitte’s Dutch affiliate on behalf of shareholders who suffered losses due to fraudulent activities at Steinhoff International. VEB claimed Deloitte had failed in its auditing duties. The case was withdrawn in October 2020 after Deloitte’s Dutch and South African firms agreed to contribute €70 million toward a comprehensive settlement addressing all related claims. VEB clarified that this settlement did not constitute an admission of liability by Deloitte.

Tingo

Deloitte Israel (Brightman Almagor Zohar & Co.) provided an unqualified audit opinion on the 2022 financial statements of Tingo Group, Inc. This opinion was called into question following a report by Hindenburg Research highlighting "clear errors" in Tingo’s financial records, implying potential oversights by Deloitte Israel. Subsequently, the U.S. Securities and Exchange Commission charged Tingo Group and associated parties with fraud on an unprecedented scale.

Tongaat Hulett

In January 2022, South African sugar manufacturer Tongaat Hulett revealed intentions to initiate legal action against Deloitte for failing to identify financial discrepancies spanning 2011 to 2018, which resulted in an overstatement of the company's equity by R12 billion.

By February 2023, Tongaat and Deloitte reached a settlement agreement wherein Deloitte consented to pay R260 million concerning six years of audited financial statements, without admitting any wrongdoing.

Bandar Malaysia Sdn Bhd

In 2019, Malaysia’s Securities Commission imposed a RM2.2 million (~$0.5 million) fine on Deloitte’s Malaysian branch linked to the RM2.4 billion ($0.6 billion) Islamic Finance Sukuk Murabahah Programme.

Canadian Bar Association

In September 2003, Deloitte submitted findings to the Canadian Bar Association indicating that inflation-adjusted motor vehicle accident claims had decreased since 1999, challenging industry positions advocating for a $4,000 cap on soft-tissue injury damages. Shortly thereafter, a Deloitte representative disclosed confidential information to the Insurance Bureau of Canada without informing the CBA. This led the Institute of Chartered Accountants of Alberta to impose a $40,000 penalty on Deloitte for unprofessional conduct.

Eskom

In October 2019, South African electricity provider Eskom initiated legal proceedings against Deloitte Consulting, its local affiliate, seeking recovery of R207 million paid for two consulting contracts awarded improperly in 2016. Eskom chair Jabu Mabuza highlighted that Deloitte’s bids—R88.8 million and R79.1 million—were substantially higher than competing offers of R14.6 million and R13.3 million, as well as R16 million and R9.1 million, respectively.

Thiru Pillay, managing director of Deloitte Consulting Africa, refuted allegations of corruption or involvement in irregular procurement practices and suggested Eskom was exerting pressure for a settlement.

On 21 March 2020, both parties reached an out-of-court agreement with Deloitte agreeing to refund R150 million of the claimed amount. While no corruption evidence was found, both acknowledged procurement "technical irregularities."

In April 2020, Deloitte announced that two directors connected to these contracts—Pillay and lead consultant Shamal Sivasanker—had resigned effective 31 March 2020.

In November 2021, after its contract with Grant Thornton ended, Eskom appointed Deloitte as its new external auditor.

Netherlands regulator fine

In 2016, Deloitte Accountants B.V., the Dutch affiliate of Deloitte, was fined €1.81 million (~$2 million) by the Netherlands Authority for the Financial Markets (AFM) for breaches related to its duty of care during inspection audits.

Quality control issues in Canada

In 2021, Deloitte’s Canadian branch was fined $350,000 by the US Public Company Accounting Oversight Board (PCAOB) due to deficiencies in their quality control protocols.

Rhode Island benefits system settlement

Deloitte’s consulting arm in the United States reached a $50 million settlement in 2020 with both the State of Rhode Island and the US Federal Government concerning problems linked to the development of a flawed computer system for state-administered benefits programs.

Auditing of US companies operating in China

On September 29, 2022, the Securities and Exchange Commission disclosed that Shanghai-based Deloitte Touche Tohmatsu Certified Public Accountants LLP (Deloitte-China) agreed to pay $20 million to resolve allegations involving inadequate audit compliance for US firms in China and Chinese firms in the US. Deloitte-China had self-identified shortcomings in 12 audits conducted during fiscal year 2018. In at least 21 instances, auditors improperly requested clients to generate their own documentation, misleadingly suggesting adherence to standards. Furthermore, Deloitte’s US office delegated audit tasks for nine clients with Chinese operations to Deloitte-China.

Unemployment insurance platforms in the US

Deloitte Consulting was instrumental in creating unemployment insurance portals for multiple US states such as Ohio, Colorado, and Illinois. In May 2020, these platforms were found to have significant security flaws, which led to proposed class action lawsuits against Deloitte. Comparable problems were reported with Florida’s CONNECT portal, also developed by Deloitte, which faced criticism for budget overruns, delays, and operational failures. A probe initiated by Florida Governor Ron DeSantis concluded that Deloitte’s stress testing procedures were inadequate.

Computer breach

In September 2017, The Guardian reported that Deloitte experienced a cyberattack compromising sensitive client and employee information including usernames, passwords, IP addresses, organizational diagrams, and health data. The breach originated from data stored on Microsoft’s Azure cloud platform without two-step verification, with unauthorized access potentially occurring since October 2016. Security analyst Brian Krebs indicated that all Deloitte email and administrative accounts were affected.

Despite the extensive nature of the breach, Deloitte stated that only a limited number of clients were impacted and that no disruptions occurred to services or client operations. The suspicious activity was initially detected in April 2017. Deloitte confirmed no sensitive data was exposed and investigators conducted a thorough review of all emails accessed by the hackers.

In October 2017, The Guardian disclosed that compromised client accounts included those of the US Department of Defense, US Department of Homeland Security, US State Department, US Department of Energy, mortgage agencies Fannie Mae and Freddie Mac, the National Institutes of Health, and the US Postal Service. Both Fannie Mae and Freddie Mac denied any breach of their data.

Deloitte quickly informed legal authorities and six affected clients while implementing enhanced security measures recommended by experts. By October 2017, the New York attorney general’s office had launched an investigation into the incident.

Sponsorships

Since 2009, Deloitte LLP has served as the official professional services sponsor for the United States Olympic Committee. The UK branch supported both the 2012 Summer Olympics and the Royal Opera House. In Canada, Deloitte acted as the designated professional services provider for the 2010 Vancouver Winter Olympic Games and 2010 Winter Paralympic Games. The Singapore affiliate backed the 2010 Summer Youth Olympics, while Deloitte Australia holds the status of Founding Partner for Invictus Games Sydney 2018, with one of its executives fulfilling the role of CEO for the event’s organizing body.

Deloitte’s sponsorship portfolio also includes university sports clubs and student organizations, such as the Edinburgh University Hockey Club, and in 2013, it established a three-year agreement with the Cambridge Union Society. In motorsports, Deloitte is the primary sponsor of the No. 37 TOM'S Toyota Supra team, competing under the name TGR Team Deloitte TOM'S in the 2023 Super GT series.

In May 2017, Deloitte formed a strategic alliance with McLaren Applied Technologies (MAT), combining Deloitte’s consulting proficiency with MAT’s engineering and data analytics expertise. This collaboration succeeded MAT’s prior engagement with KPMG, which concluded in 2017. The partnership expanded in June 2020 to include McLaren Racing, aiming to improve both vehicle and team performance. A multi-year renewal of this collaboration was finalized in May 2023 between Deloitte and McLaren Racing.

In May 2022, Deloitte entered into a sponsorship agreement lasting three years valued at over USD300,000 with the Football Association of Singapore. This made Deloitte the inaugural title sponsor of the Singapore Women’s Premier League, which was subsequently rebranded as the Deloitte Women's Premier League.

See also

• Accounting networks and associations
• Big Four accounting firms
• Deloitte Fast 500
• Deloitte Football Money League
• Deloitte Real Estate
• Financial audit
• Sarbanes–Oxley Act
• Tax advisor
• Venmyn Rand

Further reading

• Richards, Archibald C. Touche Ross & Co 1899-1981, London, 1981