MLC MasterKey Business Super has secured more than $30 million in corporate super mandates from McMillan Shakespeare, Kentz Engineering and Swisse Vitamins.
The combined corporate super plans of the three companies added a further $34 million to MLC MasterKey Business Super's funds under management, the company said in a statement.
"To win these clients in open-market tenders is evidence of how impressive a proposition MLC MasterKey Business Super is in the marketplace," MLC MasterKey Business Super general manager Michael Mulholland said.
"We tailor our offering depending on each individual company's needs, which is resonating with a lot of firms looking for a new deal for their corporate super."
Mulholland said the National Australia Bank-owned group's member rewards program, which provides employees with a range of discounts on financial and lifestyle products, and Best Doctors were also proving to be of benefit to new clients.
McMillan Shakespeare is a national provider of salary packaging and vehicle leasing administration, operating as Maxxia, RemServ and Interleasing.
Kentz Engineering is a global engineering company with offices in Perth, Darwin and Brisbane.
Melbourne-based Swisse Vitamins is a manufacturer of wellness products.