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Deloitte

Deloitte Touche Tohmatsu Limited ( ), commonly referred to as Deloitte, is a multinational professional services network based in London, England. Deloitte is the largest professional services network by revenue and number of employees in the world and is one of the Big Four accounting firms, along with EY, KPMG, and PwC.

The firm was founded by William Welch Deloitte in London, England in 1845 and expanded into the United States in 1890. It merged with Haskins & Sells to form Deloitte Haskins & Sells in 1972 and with Touche Ross in the US to form Deloitte & Touche in 1989. In 1993, the international firm was renamed Deloitte Touche Tohmatsu, later abbreviated to Deloitte. In 2002, Arthur Andersen's practice in the UK as well as several of that firm's practices in Europe and North and South America agreed to merge with Deloitte. Subsequent acquisitions have included Monitor Group, a large strategy consulting business, in January 2013. The international firm is a UK private company, limited by guarantee, supported by a network of independent legal entities.

Deloitte provides audit, consulting, financial advisory, risk advisory, tax, and legal services with approximately 457,000 employees globally, and operates in over 150 countries. In FY 2023, the network earned revenues of US$64.9 billion in aggregate. The firm has sponsored a number of activities and events including the 2012 Summer Olympics.

There have been a number of controversies surrounding the firm, including Deloitte's involvement in a "potentially misleading" report on illicit tobacco trading in Australia. The company suffered a major cyberattack in September 2017, causing a breach in client confidentiality and publicizing a significant amount of employee information. Deloitte has also been subject to litigation regarding several of its audits. Provided by Wikipedia