The Auditor-General responded on 4 February 2021 to correspondence from Senator Sarah Hanson-Young dated 14 January 2021, requesting that the Auditor-General conduct an audit of the approval of the Yeelirrie uranium mine by the Federal Government in 2019.

The audit objective was to assess the effectiveness of the Department of the Environment and Energy's award of funding under the 20 Million Trees Programme.

The audit objective was to assess the effectiveness of the Australian Taxation Office's (ATO) strategies and activities to address the cash and hidden economy.

The Auditor-General responded on 18 March 2019 to correspondence from the Hon. Shayne Neumann MP dated 19 February 2019 and 14 March 2019.  The Auditor-General further responded on 1 April 2019. The correspondence from Mr Neumann requested that the Auditor-General conduct an audit into the circumstances surrounding the Department of Home Affairs' procurement of garrison support and welfare services in Papua New Guinea. 

The objective of the audit was to assess the effectiveness of the Australian Government’s personnel security arrangements for mitigating insider threats.

The Auditor-General responded on 19 November 2021 to correspondence from Ms Alicia Payne MP dated 5 November 2021, requesting that the Auditor-General clarify some points of concern about the potential audit of the Australian War Memorial expansion (Management of the Australian War Memorial's development project).

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 objective of this audit was to examine the effectiveness of the Department of Home Affairs' administration of the support arrangements designed to ensure that the Cape Class patrol boats are achieving contracted availability and performance requirements.

The audit objective is to assess the effectiveness of the Department of Defence's management of the Mulwala Redevelopment Project.

The Auditor-General responded on 19 November 2021 to correspondence from Senator Malcolm Roberts dated 28 October 2021, requesting that the Auditor-General clarify issues relating to the Disaster Recovery Funding Arrangements. 

The Auditor-General received further correspondence about this matter from the Chief Executive Officer of the Queensland Reconstruction Authority, Mr Brendan Moon on 6 June 2022.