The entire NBN Co board has reportedly submitted their resignations to Communications Minister Malcolm Turnbull.
The resignations have yet to be accepted by the minister, Fairfax Media reports, and a decision is to be made at a cabinet meeting in early October.
Mr Turnbull hinted in July, after NBN Co chief executive Mike Quigley quit, that he may sack board members from the organisation responsible for the national broadband network.
The coalition has blamed the board and executive team for massive cost blowouts, timetable delays and for contractors losing money.
Mr Turnbull said after the election that former Telstra boss Ziggy Switkowski would be well qualified for the role of NBN Co chairman.
The coalition’s vastly different plan for the network would switch from the previous Labor government’s fibre-to-the-home scheme to a cheaper fibre-to-the-node option.