The Acting Auditor-General responded on 11 May 2017, and the Auditor-General followed-up on 19 July 2017, to correspondence from Ms Cathy McGowan AO MP dated 10 April 2017. Ms McGowan had requested that the Auditor-General conduct an audit of the Regional Australia Impact Statement process, which is administered by the Department of Infrastructure and Regional Development.

The Auditor-General responded on 19 April 2017, and followed-up on 19 July 2017 and 18 May 2018, to correspondence from the Hon. Wayne Swan MP dated 27 March 2017, requesting that the Auditor-General conduct an investigation to examine the operation of the Northern Australia Infrastructure Facility (NAIF), its independence and the quality of the systems and analyses being implemented.

The Auditor-General responded on 29 October 2019 to correspondence from the Hon Joel Fitzgibbon MP dated 1 October 2019, requesting that the Auditor-General conduct an examination of Federal Government drought funding measures. The Auditor-General provided a follow-up response to the Hon Joel Fitzgibbon MP on 24 July 2020.

The Auditor-General responded on 6 April 2023 to correspondence from Senator Andrew Bragg dated 8 March 2023, requesting that the Auditor-General conduct an investigation into the costs of the ongoing legal dispute concerning the Commonwealth and Dr Monique Ryan MP. The Auditor-General responded on 11 May 2023 to follow-up correspondence from Senator Bragg dated 18 April 2023, requesting a timeline for finalisation of the 2022–23 financial statements audit of the Department of Finance.

The Auditor-General responded on 15 December 2023 regarding the ANAO enquiries and that the results are published in the Auditor-General Report No.9 (2023-24) Audits of the Financial Statements of Australian Government Entities ended 30 June 2023 that tabled in the Parliament on 14 December 2023.

The Auditor-General responded on 20 September 2019 to correspondence from Mr Julian Hill MP dated 3 September 2019, requesting that the Auditor-General conduct an investigation to examine aspects of the family migration program. The Auditor-General provided a follow-up response to Mr Hill MP on 24 July 2020. 

The Auditor-General responded on 20 April 2018 to correspondence from Mr Stephen Jones MP dated 26 March 2018, requesting that the Auditor-General conduct an investigation to examine the awarding of a grant under the Regional Jobs and Investment Package program in Tropical North Queensland. The Acting Auditor-General followed-up on 23 January 2019 to advise Mr Jones that an audit of the Regional Jobs and Investment Packages has now commenced.

The Auditor-General received correspondence from Ms Rebekha Sharkie MP dated 3 April 2023, requesting that the Auditor-General conduct an investigation to examine the Community Batteries for Household Solar Program. The Auditor-General responded to the correspondence on 23 May 2023.

The Auditor-General responded on 13 September 2021 to correspondence from Senator the Hon Eric Abetz dated 17 August 2021, requesting that the Auditor-General conduct an investigation to examine the Australian Broadcasting Corporation's (ABC's) payment of the damages and legal costs of one of its employees in a private defamation proceeding. 

The Auditor-General provided a follow-up response to Senator the Hon Eric Abetz on 15 October 2021. 

The Auditor-General responded to, and then followed-up, correspondence from the Hon. Tony Burke MP dated 25 July 2017, requesting that the Auditor-General conduct an investigation into allegations arising out of a recent Four Corners program concerning the Murray-Darling Basin.