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((Short description|American public accounting firm))
((About|the U.S. company|other uses|Grant Thornton (disambiguation)))
((Infobox company
| name          = Grant Thornton LLP
| logo          = 
| logo_size     = 250px
| type          = [[Limited liability partnership]]
| foundation    = ((start date and age|1924)) (as Alexander Grant & Co.)<br>((start date|1986)) (as Grant Thornton LLP)
| founder       = Alexander Richardson Grant
| location      = [[Chicago, Illinois]], U.S.
| key_people    = Seth Siegel, CEO<br>Kevin Zubor, CFO<ref>((cite web|url=https://www.grantthornton.com/library/press-releases/2022/march/kevin-zubor-joins-grant-thornton-as-chief-financial-officer.aspx|title=Kevin Zubor ((!)) Grant Thornton|website=www.grantthornton.com|access-date=March 23, 2022))</ref>
| industry      = [[Accounting]], tax, and business advisory services
| products      = [[Professional services]]
| revenue       = ((profit)) US$1.9 billion (2019)
| num_employees = 8,500+
| parent        = [[Grant Thornton International]]
| homepage      = 
))

'''Grant Thornton LLP''' is the American member firm of [[Grant Thornton International]], the seventh largest accounting network in the world by combined fee income.<ref>((cite web|url=https://www.accountancyage.com/rankings/top-20-international-networks-2018/ |title=Top 20 International Networks 2018 |first=Philip |last=Smith |website= www.accountancyage.com |publisher= Accountancy Age |access-date=February 18, 2019))</ref> Grant Thornton LLP is the sixth largest U.S. [[accounting]] and advisory organization.<ref name=":2">((Cite web |date=October 10, 2018 |title=Accounting Firms in the US - Overview of Top US Accounting Firms |url=https://corporatefinanceinstitute.com/resources/careers/companies/accounting-firms-in-the-us/ |url-status=dead |archive-url=https://web.archive.org/web/20220627214610/https://corporatefinanceinstitute.com/resources/careers/companies/accounting-firms-in-the-us/ |archive-date=June 27, 2022 |access-date=April 8, 2019 |website=Corporate Finance Institute |language=en-US))</ref> The firm operates 59 offices across the US with approximately 8,500 employees, 550 partners, and produces annual revenue in excess of US$1.9 billion.<ref name=":0">((Cite web|url=http://www.grantthornton.com/about-us|title=About us ((!)) Grant Thornton|website=www.grantthornton.com|access-date=February 18, 2019))</ref><ref>((Cite web|url=http://www.grantthornton.com/about-us/firm-facts.aspx|title=Fact sheet ((!)) Grant Thornton|website=www.grantthornton.com|access-date=March 30, 2016|archive-url=https://web.archive.org/web/20160410093213/https://www.grantthornton.com/about-us/firm-facts.aspx|archive-date=April 10, 2016|url-status=dead))</ref>

== History ==

=== Early history ===
((More citations needed|section|date=November 2017))
In 1924, Alexander Richardson Grant, a 26 year old senior accountant with [[Ernst & Ernst|Ernst & Ernst (later Ernst & Young)]] decided to leave the firm and start his own business with William O’Brien. Alexander Grant & Co. was built in Chicago and it provided services as a middle market firm.  The firm was growing rapidly and nationally under the guidance of several new leaders during the next three decades.((Citation needed|date=March 2020))

In 1961, the company established its national office in Chicago and earned net revenue of more than $5 million. During this time, a competitive firm that was also committed to providing services to middle market established in Europe, and this firm later became known as Binder Dijker Otte & Co. ([[BDO International|BDO]]).((Citation needed|date=March 2020))

During the mid-1960s, the firm decided to expand its business internationally. In 1969, Alexander Grant & Co. merged with companies from Australia, Canada and the United Kingdom to form an organization called Alexander Grant Tansley Witt.

By 1980, Alexander Grant & Co. had joined with 49 international accounting firms, including a UK firm named Thornton Baker, and formed a professional global network, Grant Thornton International.

In 1985, Alexander Grant & Co. merged with Fox & Co. and became the ninth largest accounting firm in the United States, just behind the nation's "Big Eight" firms. At that time, the company had 80 offices and more than 3,000 employees.<ref name=":1">((Cite book|title=International Directory of Company Histories, Vol.57|publisher=St. James Press|year=2004))</ref>

In 1986, Alexander Grant & Co. changed its name to Grant Thornton, resulted from its affiliation with the United Kingdom firm Thornton Baker, which also changed its name to Grant Thornton.<ref>((Cite web|url=http://www.grantthornton.com/about-us/history-of-grant-thornton.aspx|title=History of Grant Thornton|access-date=April 23, 2016))</ref>

=== Recent history ===
In 2002, Grant Thornton acquired 7 offices, 43 partners and 396 employees from ex-Arthur Andersen.<ref name=":1" />

In June 2014, Grant Thornton announced J. Michael McGuire as the firm's chief executive officer.<ref>((Cite web|url=http://goingconcern.com/post/grant-thornton-names-mike-mcguire-ceo-elect|title=Grant Thornton Names Mike McGuire CEO-elect|last=Newquist|first=Caleb|date=June 2, 2014|website=Going Concern|access-date=April 23, 2016))</ref>

In August 2019, Brad Preber assumed CEO duties of the firm.

As of 2019, Grant Thornton was the sixth largest accounting firm in the United States<ref name=":2" /> and had 59 offices with more than 550 partners and 7,000 employees. Its revenue for fiscal year 2018 was $1.7 billion.<ref name=":0" />

In March 2020, Grant Thornton LLP teamed up with GroupSense to offer digital crime mitigation technology.<ref>((Cite web |url  =https://www.prnewswire.com/news-releases/groupsense-and-grant-thornton-announce-technology-alliance-301013519.html |title= GroupSense and Grant Thornton Announce Technology Alliance ((!)) Breeze| language=en |work= Press release |date= March 5, 2020 |access-date= August 16, 2021 ))</ref>

In March 2024, the company announced a deal where private equity firm New Mountain Capital would acquire a majority stake. At the time of the announcement, it was the seventh biggest accounting firm in the US, after the [[Big Four accounting firms|Big Four]] (Deloitte, EY, PwC, and KPMG), [[RSM US|RSM]], and [[BDO USA, P.C.|BDO]]. The move came amid ongoing private equity interest in the accounting space, with [[Baker Tilly International|Baker Tilly]] receiving investment of $1 billion from a different private equity group, [[Hellman & Friedman]], the prior month.<ref>((Cite web |title=Grant Thornton US sells majority stake to private equity |url=https://www.ft.com/content/c6e8c528-47b7-40ae-b06a-f1158af26b36 |access-date=2024-03-15 |website=www.ft.com))</ref>

== Operations ==
Headquartered in [[Chicago]], Grant Thornton LLP has three service lines: audit, tax, and advisory services. Specific advisory services and areas of expertise include: [[Sarbanes-Oxley]] compliance, [[mergers]] and [[acquisitions]] advice, [[tax]], and business valuations. Target industries include [[construction]], distribution, energy, [[financial services]], food and beverage, [[Healthcare industry|healthcare]], hospitality and restaurants, life sciences, [[manufacturing]], [[Nonprofit organization|not-for-profit]] organizations, [[private equity]], [[real estate]], [[retail]], [[Technology company|technology]], and transportation.<ref>((Cite web |title=Construction ((!)) Grant Thornton |url=http://www.grantthornton.com/industries/construction.aspx |access-date=March 30, 2016 |website=www.grantthornton.com))</ref>

== Services ==
Grant Thornton offers three main service lines:<ref>((Cite web|url=http://www.grantthornton.global/globalassets/1.-member-firms/global/member-firm-fast-facts-pdfs/grant_thornton_united_states_fastfacts.pdf|title=Fast Fact|access-date=April 23, 2016))</ref>
* Audit/Assurance: Provides not only the financial statement audits, but also uses professional tools and processes to conduct integrated audits required by [[U.S. Securities and Exchange Commission|SEC]] and under the [[Sarbanes–Oxley Act|Sarbanes-Oxley Act]].
* Tax: Offers clients professional tax services including: federal, local and state, international tax advisory & compliance, compensation & benefits consulting, private wealth services, and tax accounting & risk advisory services.
* Advisory: services in business strategy, governance, risk & compliance, performance improvement, and information technology.

=== Tax Desk ===
Tax desks is developed by Grant Thornton US and it connects other member firms in different countries to help clients grow their business and solve their common problems in the global market. Grant Thornton US has established the desks between the United States and the UK, the United States and China, and the United States and Japan.<ref>((Cite web|url=http://www.grantthornton.com/issues/driving-growth/international-growth.aspx|title=Helping dynamic organizations grow internationally|website=Grant Thornton|access-date=April 23, 2016))</ref>

== Criticisms ==
* Several audit deficiencies in the firm's audit work at eight companies were found by Public Company Oversight Board when it was doing the inspection of Grant Thornton's 2005 audit. In the PCAOB's report, the Board concluded that the firm didn't have enough evidence to support its audit opinions. Grant Thornton responded to the PCAOB's criticism on June 4, 2007. In its response letter, the firm wrote "We strongly disagree with the use of overly broad comments such as ‘failed to identify’, ‘failed to perform,’".<ref>((Cite web|url=http://ww2.cfo.com/accounting-tax/2007/06/grant-thornton-fires-back-at-pcaob-criticism/|title=Grant Thornton Fires Back at PCAOB Criticism|last=Johnson|first=Sarah|date=June 29, 2007|website=CFO|access-date=April 24, 2016))</ref>
* In April 2012, Grant Thornton was accused by its client Bill Yung and his family. The firm hid real information from its clients and sold a tax shelter to them. There was a 90% chance the IRS would reject the shelter. Kentucky State Court ordered Grant Thornton to pay $20 million in compensatory damages and $80 million in punitive damage.<ref>((Cite web|url=https://www.forbes.com/sites/robertwood/2013/11/26/100m-verdict-against-grant-thornton-shows-why-clients-sue-their-advisers/#7b2aa52f7c8b|title=$100M Verdict Against Grant Thornton Shows Why Clients Sue Advisers|last=Wood|first=Robert|date=November 26, 2013|website=Forbes|access-date=April 24, 2016))</ref>

== Sponsorship ==
* In December 2017, Grant Thornton signed a five-year marketing partnership deal with the [[PGA Tour]] and replaced [[PricewaterhouseCoopers|Pricewaterhouse Coopers]] as the "Player's Partner".<ref>((Cite web|url=https://www.sportsbusinessdaily.com/Daily/Issues/2017/12/05/Marketing-and-Sponsorship/Grant-Thornton.aspx|title=Grant Thornton Signs With PGA Tour, Rickie Fowler; Replaces PwC As Players Partner|website=www.sportsbusinessdaily.com|language=en-US|access-date=December 18, 2017))</ref> During this time, Grant Thornton also entered into a separate deal with professional golfer [[Rickie Fowler]].<ref>((Cite web|url=https://www.sportsbusinessdaily.com/Daily/Morning-Buzz/2017/12/05/Grant-Thornton.aspx|title=Grant Thornton Ups Golf Spend With PGA Tour, Rickie Fowler Deals|website=www.sportsbusinessdaily.com|language=en-US|access-date=December 18, 2017))</ref>
* In March 2016, Grant Thornton signed a multi-year agreement with the [[National Center for the Middle Market]] (NCMM). In 2015, Grant Thornton has become a multi-year sponsor of the [[Charlotte Hornets]] basketball team. The Hornets and Grant Thornton will enter into a multi-year advertising arrangement that includes the renaming of the Crown Club as the "Grant Thornton Crown Club."<ref>((Cite web|url=http://www.nba.com/hornets/hornets-announce-grant-thornton-llp-become-teams-official-accounting-firm|title=Hornets Announce Grant Thornton LLP to Become Team's Official Accounting Firm|date=December 14, 2015|website=NBA|access-date=April 24, 2016))</ref>((needs update|date=May 2020))

==References==
((Reflist))

((Illinois Corporations))
((Authority control))

[[Category:Grant Thornton]]
[[Category:International management consulting firms]]
[[Category:Management consulting firms of the United States]]
[[Category:Privately held companies based in Illinois]]
[[Category:Consulting firms established in 1924]]
[[Category:Accounting firms of the United States]]
[[Category:Companies based in Chicago]]
[[Category:1924 establishments in Illinois]]

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