Grant Thornton to add GT Australia

Grant Thornton is adding Australia to its multinational platform.

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The move, expected to close later this year, will expand Grant Thornton’s presence in the Asia Pacific region, building on its footprint in New Zealand. 

The Top 10 Firm has added nearly 20 firms to its platform since it first received a private equity investment from New Mountain Capital in March 2024, and split its non-attest services into Grant Thornton Advisors and its attest services into Grant Thornton LLP. 

In November 2025, it announced it would be adding firms in Puerto Rico, Brazil, Poland and New Zealand. It has already added GT firms in the U.S., Ireland, France, the United Arab Emirates, the Netherlands, the Channel Islands, the Cayman Islands, Spain, Switzerland, Liechtenstein, Belgium and Luxembourg.

“Grant Thornton Australia is a standout firm — with strong momentum, exceptional leadership and a culture that has earned deep respect in its market,” Grant Thornton Advisors CEO Jim Peko said in a statement. “Together, we can accelerate growth across the Asia Pacific region while strengthening how we serve clients seamlessly across borders. This is exactly the kind of partnership we seek as we continue to build a differentiated platform with scale and purpose.”

Grant Thornton Australia adds $282 million in revenue, 1,500 employees and six offices to the platform. 

“Joining the Grant Thornton Advisors platform would give us accelerated access to emerging tech capabilities and growth capital, accelerating our ambition to build Australia’s most modern, internationally aligned professional services firm,” Grant Thornton Australia CEO Said Jahani said in a statement. “It would both enhance our client offerings and deepen the opportunities we can provide for our team. This is about seizing the right growth lever, and we are incredibly excited for what lies ahead.”

Grant Thornton ranks No. 9 on Accounting Today‘s 2026 Top 100 Firms list. It reported $2.4 billion in revenue, with 610 partners and over 11,000 employees across 49 offices.