Australia spends $5 billion a year on Big Four consultants — and the government rejected every major reform to fix conflicts of interest

Federal government consulting contracts with Big Four firms (PwC, Deloitte, KPMG, EY) increased 1,270% over a decade to $5 billion per year by 2023. This is approximately 8% of all Commonwealth discretionary procurement spending.

Key documented failures:

PwC tax scandal:

- PwC used confidential Commonwealth Treasury tax policy information (shared during government advisory engagements) to advise private clients on how to structure around the new rules before they were publicly announced

- AFP raided PwC's Sydney office November 2024 as part of the criminal investigation

- PwC's government arm was sold for $1 to restructure away from regulatory consequences

Deloitte Home Affairs conflict:

- Deloitte simultaneously advised the Department of Home Affairs AND a bidder participating in the same tender

- Deloitte disclosed this conflict of interest only when it was identified externally

- The Home Affairs engagement was worth $1.5M

Senate committee response:

- Senate Finance and Public Administration Committee recommended sweeping conflict-of-interest reforms, cooling-off periods, and transparency requirements

- The federal government accepted "most" recommendations — in practice accepting the symbolic ones and rejecting structural reforms

- Revolving door between senior public servants and Big Four roles continues with no mandatory cooling-off period

Sources:

- Centre for Public Integrity: https://publicintegrity.org.au/the-mandarin-and-crikeys-revolving-door-list-how-power-bleeds-between-politics-and-the-big-four/

- PwC tax scandal: https://en.wikipedia.org/wiki/PwC_tax_scandal