CareSuper has received authorisation from the Australian Prudential Regulation Authority (APRA) to offer a MySuper product.
Its balanced default option will become the fund's new default option from 1 July 2013.
CareSuper said it would be a very straight-forward transition for members.
It also announced this week it would launch further direct investment options to complement its ASX300 option.
Industry funds REST Industry Super, HOSTPLUS, HESTA, NESS Super, TWUSUPER, Media Super and Club Plus Super have all received authorisation for MySuper.