First State Super chief executive Michael Dwyer said the outcome was a "very strong endorsement" of the fund in the marketplace.
"Although we faced a very worthy field of candidates, we are delighted and encouraged that the ACT government has decided to utilise our services for at least another decade," Mr Dwyer said.
"Our relationship with the ACT government began back in 2006 when we were awarded the tender to be their default employee fund for a period of five years.
"This was then extended through until 30 June this year. In that time we have developed a tremendous rapport with government employees and have increased support for our ACT membership through the opening of our Canberra office in 2010," Mr Dwyer said.
Over 10,000 government employees have contributed into the fund in the past 12 months, he said.
"Across the wider ACT region we now have in excess of 32,000 members with more than $1.5 billion in retirement savings.
"Our local Canberra office has both financial planning and business development staff and our team will continue to expand in response to members’ needs. We are committed to improving the retirement outcomes for each of our members in the ACT," he said.
