The Auditor-General responded on 16 January 2024 to correspondence from Senator the Hon. Bridget McKenzie dated 22 December 2023, requesting that the Auditor-General to conduct an audit into the Australian Government's $2.2 billion commitment to the Melbourne Suburban Rail Loop Project.

The Auditor-General responded on 16 June 2021 to correspondence from Senator Malcolm Roberts dated 19 May 2021, requesting that the Auditor-General conduct an investigation to examine the administration of Natural Disaster Relief and Recovery Arrangements programs and funding. 

The Auditor-General responded on 23 April 2020 to correspondence from Senator Katy Gallagher dated 31 March 2020, requesting that the Auditor-General develop an audit program related to the Australian Government’s economic response to COVID-19. 

The Auditor-General responded on 14 November 2019 to correspondence from the Minister for Finance, Senator the Hon Mathias Cormann, regarding annual performance statements audits. The Minister requested that the Auditor-General conduct a program of pilot assurance audits of annual performance statements of Commonwealth entities subject to the PGPA Act, in consultation with the Joint Committee of Public Accounts and Audit (JCPAA). The Auditor-General has agreed to the request and proposes to conduct a pilot to audit the 2019–20 performance statements of three entities.

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 Auditor-General responded on 10 May 2018 to correspondence from Senators Patrick, Griff, Hanson-Young and Bernardi, Ms Rebekha Sharkie MP and the Hon. Tony Burke MP dated 24 April 2018, requesting that the Auditor-General conduct an investigation to examine the purchases of water for environmental flows in the Murray-Darling Basin. The Auditor-General provided a follow-up response on 29 April 2019. 

The Auditor-General responded on 19 August 2020 to correspondence from the Hon Catherine King MP dated 28 July 2020, requesting that the Auditor-General conduct an investigation to examine the design and administration of the Regional Airlines Funding Assistance Program.

The Auditor-General responded on 5 May 2021 to correspondence from Senator Gerard Rennick dated 22 March 2021, requesting that the Auditor-General put in place the practice of annually auditing Australia's gold reserves.

The Auditor-General has responded to a request from Mr Pat Conroy MP dated 28 September 2018, asking that the Auditor-General conduct an audit of aspects of the Government advertising campaign: Powering Forward.

The Auditor-General responded on 5 July 2022 to correspondence from the Hon Richard Marles MP dated 31 May 2022, requesting that the Auditor-General conduct an investigation to review the Workforce Australia procurement processes.