
Non-audit revenue grew from 73% to 82% of Big Four income from 2013-2018. Australia's Treasury proposes structural separation, civil penalties, and mandatory audit rotation every 10 years.
The Australian government is moving to shake up the accounting industry. A Treasury options paper released Wednesday by Assistant Treasurer Daniel Mulino proposes splitting audit functions from consulting arms, imposing civil penalties on firms and partners, and forcing mandatory rotation of audit contracts every 10 years.
The catalyst was a string of scandals. At KPMG, partners allegedly leaked client information and mishandled a whistleblower. CEO Andrew Yates and chairman Martin Sheppard resigned. Separately, two Ernst & Young staff were sacked after the prime minister's banking details were breached. The PwC tax leaks saga earlier had already eroded trust.
The options paper frames the problem in numbers. Audit revenue accounted for only 20% of total revenue for the Big Four in Australia in 2025. Non-audit revenue grew from 73% to 82% between 2013 and 2018. That gap creates incentives to prioritize consulting work over audit quality, the paper says.
The structural tension is straightforward. Partners in a multidisciplinary firm allocate resources between audit and consulting. Consulting earns more. The paper warns of “internal competition for resources” that can undermine audit independence.
One option is forced structural separation – splitting the audit practice into a standalone entity. Another is licensing audit firms through ASIC, with independence, confidentiality, and quality controls as ongoing conditions.
The partnership model itself is under scrutiny. Partners share liability jointly. That diffuses accountability, the paper notes. Proposed fixes include requiring a percentage of partners to be registered for regulated services, or limiting partnership size so that audit work is delivered only from an authorized audit company.
Civil penalties are on the table. Currently ASIC can only seek criminal penalties or issue infringement notices for auditor breaches. The paper calls that “low by international standards” and suggests introducing civil pecuniary penalties.
Mandatory audit rotation would force companies to tender their audit contracts every 10 years. The top four firms audit 96% of the top 200 entities and 76% of the next 300. Mid-tier firms cite “preferential bias,” resource constraints, and insurance costs as barriers to entry. Rotation could open the door, the paper says.
Lendlease, a KPMG client for decades, will put its external audit out to tender next year. Chairman John Gillam told a parliamentary hearing that the alleged misuse of board papers was a “fundamental breach of trust.”
ASIC chair Sarah Court told a June inquiry that the KPMG case shows an “egregious and serious breach of trust.” She supports extending the regulator's scrutiny powers to consulting firms.
The consultation closes August 12. Any legislation would take months to draft and pass. The immediate effect is uncertainty over the Big Four's business model, partner compensation structures, and the cost of compliance for companies that use them.
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