[1] On 15 September, the National Party confirmed, after successful negotiations, that it would continue a coalition agreement with the Liberal Party, guaranteeing the Turnbull government a majority in the Australian House of Representatives.

[3][4] On 29 December 2015, Jamie Briggs resigned from his portfolio following a complaint regarding a late night incident with a public servant; and on the same day, Mal Brough stood aside pending Australian Federal Police investigations into the James Ashby affair.

[6] The first arrangement of the Turnbull ministry was sworn in on 21 September 2015a and continued until 18 February 2016.

Finance Minister Mathias Cormann retained Special Minister of State in which he had been acting for Mal Brough when Brough had earlier stood aside pending the outcome of Australian Federal Police investigations.

Senator Concetta Fierravanti-Wells became Minister for International Development and the Pacific.

Prime Minister Turnbull announced the promotion of Nola Marino to Chief Government Whip and the promotions of Brett Whiteley and Ewen Jones to Government Whips on 27 September 2015.