Controversies
Controversies tied to this brand in public sources. A listing is not a finding of fault.
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2026
FRC fines Deloitte £6.05m over Go-Ahead audits
Fine or penalty
The UK Financial Reporting Council fined Deloitte £6.05 million over failures in its audits of transport firm Go-Ahead. The regulator found a "highly concerning pattern of failure" and numerous breaches of audit requirements between 2016 and 2020, including a failure to challenge two Go-Ahead subsidiaries that wrongfully retained more than £30 million of public money for an extended period. The sanction was reduced from £11 million because of co-operation and admissions by the firm.
Company response
Apology — Deloitte UK
We regret that aspects of our audit work did not meet the standards expected and have learned from this matter.
Apology — Deloitte UK
"We regret that aspects of our audit work did not meet the standards expected and have learned from this matter," Deloitte UK said in a statement. "We are committed to continuous improvement and the delivery of high quality audits."
Denial — Deloitte Cyprus
Deloitte Cyprus said it "acts in compliance with applicable laws".
Clarification — Deloitte
Deloitte said it regretted that the FRC tribunal ruled that aspects of its audit work on Autonomy fell below professional standards required.
Source excerpt
On Thursday, the FRC said that there were “numerous breaches” of audit requirements between 2016 and 2020.
The regulator would have fined Deloitte £11 million but reduced this to £6.05 million because of co-operation and admissions by the firm.
Deloitte has been fined more than £6 million by the accounting watchdog over its audits of transport firm Go-Ahead.
2026
Deloitte-linked software error left nearly 200,000 Texas voter registrations unprocessed
Issue disclosure
A software update linked to Deloitte was reportedly installed on the Texas Department of Public Safety's servers in 2025, causing automatic voter registration transfers to stop and leaving a backlog of roughly 178,000 to nearly 200,000 unprocessed voter registration applications. The error was caught in September 2026, when the backlog was transmitted to county registrars in one batch ahead of the state's Oct. 5 voter registration deadline and the Nov. 3 election. Democratic attorney general candidate Nathan Johnson announced that, if elected, he plans to investigate Deloitte and other state vendor contracts, and Republican state Sen. Paul Bettencourt also criticized Deloitte and the Texas Secretary of State. Deloitte did not immediately respond to requests for comment.
Deloitte allegedly installed a software update on the Texas Department of Public Safety's servers in 2025 that caused automatic voter registration transfers to stop, leaving a backlog of roughly 178,000 to nearly 200,000 unprocessed voter registration applications. The error was caught in September 2026, when the backlog was transmitted to county registrars in one batch ahead of the state's Oct. 5 voter registration deadline and the Nov. 3 election. Democratic attorney general candidate Nathan Johnson announced that, if elected, he plans to investigate Deloitte and other state vendor contracts, and Republican state Sen. Paul Bettencourt also criticized Deloitte and the Texas Secretary of State. Deloitte did not immediately respond to requests for comment.
Source excerpt
a clerical error involving the consulting firm Deloitte led to a backlog of nearly 200,000 unprocessed voter registration applications with just over a month to go before November's elections
2021
1MDB-related audit settlement in Malaysia
Deloitte’s Malaysian affiliate agreed to pay the Malaysian government US$80 million to resolve claims connected with audits of accounts associated with 1MDB and SRC International. The settlement occurred against the background of the broader 1MDB financial scandal and regulatory scrutiny of professional advisers.
2021
Risk analyst sues Deloitte over alleged abusive behaviour and workplace handling
Lawsuit filed
Katrina Jones sued Deloitte, alleging the firm failed to protect her from a male partner's controlling and abusive behaviour and that its investigation was designed to protect the firm's reputation. The claims are allegations; the article says Deloitte had not yet filed a defence.
Source excerpt
Katrina Jones alleges that Christopher Holliday's 'oppressive and abusive' behaviour caused her psychiatric harm.
The firm has not yet filed a defence in court.
A woman is suing Deloitte over claims the firm failed to protect her from a 'controlling and manipulative' male partner.
2020
Eskom and Deloitte reach R150 million settlement
Settlement
Eskom said it reached an out-of-court settlement with Deloitte under which Deloitte would repay R150 million of the R207 million in fees it collected. The agreement stated there were technical irregularities in the procurement process and that investigations showed Deloitte was not involved in state capture or other forms of corruption.
Stated objective. To avoid protracted and costly litigation.
Source excerpt
The agreement reached on Friday states that there were technical irregularities in the procurement process but adds that investigations showed Deloitte was not involved in state capture or other forms of corruption.
CAPE TOWN - Eskom said on Friday it had reached an out of court settlement with Deloitte that would see the international consulting firm repay R150 million of the original fees of R207 million it collected from the power utility.
2017
Deloitte cybersecurity breach
Deloitte disclosed a cyberattack involving access to systems containing confidential client and employee information. Public reporting described compromised credentials and emails, while Deloitte stated that the number of affected clients was limited and that investigations found no disruption to client businesses. The incident generated criticism of access controls, cloud-security practices, and incident disclosure.
2017
Livent audit litigation
Deloitte faced litigation arising from its former audit relationship with Canadian entertainment company Livent. The case concerned allegations about whether audit work should have detected fraudulent activity in the company’s financial reporting.
2005
Adelphia audit regulatory action
The U.S. Securities and Exchange Commission announced a settlement with Deloitte & Touche concerning charges related to the audit of Adelphia Communications’ 2000 financial statements. The matter contributed to continuing scrutiny of auditor responsibilities and audit quality.