The House That Leaks Built: How KPMG’s Breach of Trust Finally Forced Canberra to Consider Breaking Up the Big Four
After partners misused Lendlease board papers to poach Westpac and Dexus audits—and then mishandled the whistleblower who exposed them—the federal government is now weighing the most radical overhaul of the accounting profession in a generation
For sixty-eight years, Lendlease trusted KPMG with its books. The construction giant’s board sat in the same rooms, across the same tables, with the same audit partners, year after year, decade after decade. That trust, built over nearly seven decades, was shattered in a single revelation: KPMG partners had allegedly taken confidential board papers from Lendlease—documents that included pitch materials from rival firms EY and PwC—and used that intelligence to win lucrative audit contracts from Westpac and Dexus.
The betrayal was, in the words of Lendlease chairman John Gillam, “a fundamental breach of trust” and “a grave misuse” of privileged access. It was also, according to federal prosecutors and lawmakers, a crime—one that has now forced the Australian government to consider the most dramatic restructuring of the accounting industry since the profession was first regulated.
On Wednesday, Assistant Treasurer Daniel Mulino released a Treasury options paper that could, for the first time, mandate the structural separation of audit and consulting functions within Australia’s Big Four accounting firms—Deloitte, EY, KPMG and PwC. The proposal, if enacted, would force these global behemoths to choose: offer lucrative business advice, or conduct independent audits. Not both. It is a reckoning decades in the making, and it has been brought to a head by a scandal that has already claimed the scalp of KPMG’s chief executive, its chairman, its head of audit, and two senior partners—with more resignations almost certainly to come.
The Whistleblower Who Would Not Be Silenced
The story of how we arrived at this moment begins not in a Canberra hearing room, but in the quiet desperation of a single KPMG employee.
In May 2024, a whistleblower—a former senior executive at the firm—approached KPMG’s senior leadership with explosive allegations. According to the claims, senior auditing partners had improperly accessed confidential documents belonging to Lendlease, one of KPMG’s longest-standing clients. Among those documents were pitch submissions from EY and PwC—rival firms that were competing to become Lendlease’s next auditor. The KPMG partners, the whistleblower alleged, took that confidential intelligence back to their own firm and used it to pitch for and win audit contracts from Westpac and Dexus.
The response from KPMG was swift—and, according to senators who later reviewed the case, deeply inadequate. The firm launched an internal investigation and concluded that the whistleblower’s claims “couldn’t be substantiated.” The whistleblower was allegedly pressured to leave the firm. Senior executives, worried that the whistleblower would leak confidential information about the firm’s business, covertly searched the individual’s computer. External investigations were commissioned—including one by law firm Ashurst from June to August 2025—and reportedly found no wrongdoing had occurred.
For two years, the whistleblower waited for justice. None came.
In March 2026, the whistleblower went public—contacting Labor Senator Deborah O’Neill, who used parliamentary privilege to air the explosive allegations on the floor of the Senate. The political firestorm that followed was unlike anything the accounting profession had seen since the PwC tax leaks scandal of 2023.
“Is the Whole Barrel Rotten?”
On June 19, 2026, a parliamentary hearing in Canberra laid bare the full extent of the scandal. Before a hostile committee, a procession of KPMG’s most senior figures—past and present—were subjected to hours of interrogation.
Liberal Senator Paul Scarr, visibly frustrated, told the executives: “I’m sick and tired and I think all the committee members are sick and tired of the way KPMG has persistently characterised this.”
Former KPMG chief executive Andrew Yates, who had resigned just weeks earlier, faced the committee’s fury. When Senator O’Neill asked whether the misconduct was limited to a few “bad apples” or whether “the whole barrel is rotten,” Yates demurred. “I don’t see myself as a bad apple, Senator,” he said. “I see someone who has took accountability for things that went wrong and nor do I see the firm to be full of bad apples.”
The committee was unimpressed. Senator O’Neill laid out the calculus with brutal clarity: KPMG partners had obtained confidential documents from Lendlease—documents that revealed their competitors’ business models, strengths, and weaknesses. “This information is so irresistible,” she said, “that even though I would break every professional code, I’m going to take that information back and use it for the gain of myself as a KPMG partner and all the partners.”
Greens Senator Barbara Pocock pressed KPMG chairman Martin Sheppard on whether the misconduct was connected to the firm’s relentless pursuit of revenue. Sheppard’s evasive answers drew sharp rebukes. “You’re not answering my question, Mr Sheppard,” Senator Pocock shot back.
Former KPMG partner Brendan Lyon, who also testified, put the scandal in its starkest terms. “This really goes to the heart of the independence that is meant to exist between auditor and auditee,” he said, “and really unpicks the comfort and the degree of trust that people can have in the audited financial statements of our largest corporations.”
The Fallout: A Leadership Decapitated
The political pressure proved relentless. Within weeks, KPMG’s leadership was in ruins.
On May 29, 2026, CEO Andrew Yates resigned over the mishandling of the whistleblower allegations. Head of audit Julian McPherson followed shortly thereafter. On June 5, the Australian Securities and Investments Commission (ASIC) formally named two partners it was investigating: former chief operating officer Eileen Hoggett and audit partner Paul Rogers. Both would soon leave the firm.
On June 23, chairman Martin Sheppard announced his resignation. The firm said it would appoint its first independent chairman and add independent directors to its Australian board as part of a major governance overhaul. Interim chief executive Stan Stavros acknowledged the scale of the failure. “We did not meet the standards expected of us,” he said, “and we recognise the impact this has had on the whistleblower, our people, our clients and the community.”
But the damage extended far beyond KPMG’s own walls. Lendlease, after sixty-eight years of partnership, confirmed it was ending its audit relationship with KPMG. The federal Department of Finance barred KPMG from bidding on government contracts until at least September 30, 2026. The Greens referred the firm to the National Anti-Corruption Commission. And ASIC, which had eight active contracts worth approximately $3 million with KPMG, was forced to defend why it continued doing business with a firm it was formally investigating.
The Government Strikes Back
On July 1, 2026, Assistant Treasurer Daniel Mulino unveiled the government’s response: a Treasury options paper that contemplates the most radical regulatory intervention in the accounting industry’s history.
The paper identifies a fundamental conflict at the heart of the modern accounting firm. “Non-audit services may dominate the overarching culture of the firm,” it states, “and this culture may be at odds with an auditor’s role in challenging management and client perspectives.” In other words, when a firm makes most of its money from lucrative consulting work, the auditors who are supposed to provide independent scrutiny become captive to a culture that prioritizes revenue over rigor.
The options under consideration are sweeping. Structural separation would force the Big Four to split their audit and consulting arms entirely—a step akin to breaking up the firms. Operational separation would prevent firms from offering both audit and non-audit services to the same client. The government is also considering capping the number of partners in an accounting firm, potentially reducing the current limit of 1,000 to just 400.
Mulino did not mince words. “In recent years, we have seen behaviour from some large accounting, auditing and consulting firms in Australia that is not fair and honest,” he said. “This has undermined trust in the firms themselves and raised broader questions about the resilience of the frameworks meant to uphold market integrity.”
Speaking to ABC Radio, he was even blunter. “What we’ve seen … was behaviour by large firms that simply isn’t good enough,” he said. “It’s in relation to some of the services that underpin our entire financial services system, audit functions, core accounting and consulting functions, where information, confidential information, is being misused across different parts of the firm.”
Prime Minister Anthony Albanese, who has himself been the victim of a separate privacy breach involving an EY employee who allegedly accessed his personal banking information, threw his weight behind the reforms. “The behaviour of some of these big accounting firms has been completely unacceptable,” he told ABC TV, “and they need to be held to account.”
A Pattern of Misconduct
The KPMG scandal is not an isolated incident. It is the latest—and perhaps most damaging—in a string of ethical failures that have plagued Australia’s accounting profession.
In 2023, the PwC tax leaks scandal revealed that senior partners at the firm had misused confidential government tax information to help multinational clients avoid new laws. That scandal forced out senior management and led to a major overhaul of PwC’s Australian operations, including the appointment of an independent chair and board members.
Now, KPMG has been caught in a nearly identical pattern: confidential information, misused for commercial gain, with a whistleblower silenced and a culture of impunity laid bare.
The parallels have not been lost on lawmakers. “These are your members!” Liberal Senator Paul Scarr told the leaders of Chartered Accountants Australia New Zealand during the parliamentary inquiry. “Every accountant that’s doing the right thing, who’s a member of CA ANZ, I feel for them. There should be a revolution in the streets. This has failed. [It is a] systemic failure in terms of regulating this important profession.”
Senator Scarr noted that the scandals involved the most senior members of the profession—not rogue junior employees, but partners, chairs, and chief executives. “We had those awful revelations in relation to PwC,” he said. “And now I’m sitting here looking at KPMG and we’ve got …” He trailed off, the implication unmistakable: the rot runs deep.
The Money Trail
The scale of the government’s exposure to these firms helps explain why Canberra is finally acting.
KPMG Australia held 297 active federal contracts worth $653 million in 2025—a substantial slice of its total revenue of $2.3 billion. Across the Big Four, the total value of taxpayer-funded contracts runs into the billions.
Yet despite the scandal, KPMG continued to win government work. ASIC itself had eight active contracts with the firm, including two consultancy contracts, at the same time it was formally investigating KPMG partners. When Greens Senator Barbara Pocock pressed ASIC on why it had entered contracts with KPMG after commencing proceedings against the firm, ASIC chair Sarah Court insisted the procurement process had been independent.
The Department of Finance has now launched an independent review of KPMG, and all federal departments holding existing contracts with the firm are “obliged to reach out to the contractors that they work with and ensure that all arrangements are appropriate.” But for many, the damage to public trust has already been done.
The Fight Ahead
The Treasury options paper is just the beginning of what promises to be a bruising political battle. The Big Four firms are among the most powerful and well-connected businesses in Australia, with deep relationships across government, corporate Australia, and the political class.
Senator Deborah O’Neill, who has been at the forefront of exposing both the PwC and KPMG scandals, has warned that the consultants “will fight change ‘tooth and nail’.” The fight to protect their own interests, she said, will be fierce—but the stakes could not be higher.
The options paper will now be subject to consultation. If structural separation is ultimately adopted, it would represent a historic break with the global model that has defined the accounting profession for decades. The UK and US are watching closely; both have grappled with similar conflicts of interest, and both may follow Australia’s lead.
For KPMG, the path forward is uncertain. The firm has announced it will appoint its first independent chairman—Michael Ebeid, a former public service executive. But Ebeid’s appointment has drawn immediate criticism after it emerged that he had written an email disparaging Senator O’Neill. Critics have described the move as “performative.”
The firm has also promised new board subcommittees to oversee audit quality, ethics, and whistleblower matters. But after years of internal investigations that found “no wrongdoing,” and after a whistleblower was allegedly pressured to leave the firm, trust is in short supply.
A Reckoning Decades in the Making
What happened at KPMG was not the work of a few rogue partners. It was the logical consequence of a business model that rewards revenue above all else—a model in which the same firm that profits from consulting work is expected to provide independent scrutiny of the very clients it seeks to woo.
The Treasury options paper acknowledges this reality. As it notes, firms are making most of their money off consulting functions, but that creates conflicts if they are also the same firm doing company audits. The culture of the consulting arm—a culture of winning work, pleasing clients, and maximizing revenue—inevitably seeps into the audit function. And when that happens, the independence that is supposed to underpin the entire financial system is compromised.
For sixty-eight years, Lendlease trusted KPMG. That trust was betrayed. Now, the question is whether the Australian government will trust the Big Four to reform themselves—or whether it will force the breakup that the industry has resisted for so long.
“Trust will only be rebuilt through sustained action and demonstrable change,” said interim CEO Stan Stavros. The government’s options paper suggests that the time for promises is over. The time for action has arrived.
This report is based on documents released by the Treasury Department, testimony before the Parliamentary Joint Committee on Corporations and Financial Services, statements from the Australian Securities and Investments Commission, and reporting by the Australian Broadcasting Corporation. KPMG Australia has been contacted for comment but has not responded to specific questions regarding the allegations. All individuals and firms mentioned are presumed to be cooperating with ongoing investigations unless otherwise noted.
Hindenburg Papers is an independent investigative publication dedicated to exposing financial fraud, corporate malfeasance, and abuse of power. We believe in holding the powerful accountable—one story at a time.
