The boards of Equipsuper and Vision Super have signed off on the merger of the two funds, with the organisations being brought together in February 2012.
The funds had already announced their plans in April last year, but the merger was delayed because Equipsuper's assets could not be transferred into the funds' pooled super trust until September this year due to activities and reporting associated with the end of the financial year.
"However, all other aspects of the merger remain largely unaffected and we will move immediately to implement our plan to bring the operations of the two funds together by February 2012 and achieve full successor fund transfer by August 2012," Equipsuper chair Andrew Fairley said.
The merger will create a fund with $9.5 billion in assets under management and 170,000 members.
"This merger brings together two funds with extremely complementary operations with mutual benefits in the two key areas of member administration and investments," Vision Super chair Darrell Cochrane said.
"The new fund will be able to deliver an exciting and contemporary range of products and services for members and employers."