Grant Thornton adds Grant Thornton Australia

Grant Thornton Advisors announced that Grant Thornton Australia has joined its multinational platform, completing a deal announced in April.

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GT Australia is the latest of nearly 20 Grant Thornton International firms to join the platform since the Top 10 Firm first received a private equity investment from New Mountain Capital in March 2024. 

The deal adds approximately $282 million in revenue, six offices and 1,500 professionals, including 300 people from GT New Zealand, which linked up with GT Australia in December 2025.
 

Jim Peko of Grant Thornton

Jim Peko

“This transaction opens a new door for our platform’s growth — bringing us the leadership, talent and quality we need to further expand our singular model within the Asia-Pacific region,” said Jim Peko, CEO of Grant Thornton Advisors and leader of its multinational platform, in a statement Friday. “This is about building capabilities at scale across worldwide markets so we can move and grow with clients, while investing in the best technologies and creating even more opportunities for our people.”

GT Australia CEO Said Jahani will continue to lead the Australian firm and will also serve in a new role of CEO of the Asia-Pacific region within the platform. Jahani will also join the Executive Committee at Grant Thornton Advisors.
 
“The Asia-Pacific region is one of the most dynamic growth markets in the world, and we are building a platform with the talent, technology and connectivity the region needs,” Jahani said in a statement. “I’m proud to be helping create new opportunities for our clients and our people. Together, we’ll move faster, operate more confidently and succeed across borders.”

Said Jahani

Said Jahani

Besides adding GT firms Ireland, France, the Netherlands, Spain, Switzerland, Belgium, Brazil and a number of other countries, Grant Thornton recently announced it would acquire Top 10 Firm CBIZ in a $5 billion deal.
 
Grant Thornton Australia will continue to be part of the Grant Thornton International network.

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