Protecting the public purse

Codes of audit practice

The Codes of Audit Practice (the Codes) define the scope, nature and extent of local audit work.

There is a separate code of audit practice for local government and the NHS, primarily to reflect the divergent accounting, corporate governance and performance management frameworks in the two sectors. Both are available at the bottom of this page.


The Commission has a statutory duty to prepare, and keep under review, a code of audit practice prescribing the way in which auditors must carry out their functions under the Audit Commission Act 1998 (the Act). The Code must embody what appears to the Commission to be the best professional practice with respect to the standards, procedures and techniques to be adopted by auditors. The Act allows for separate codes to be produced for the audit of local government and NHS bodies.

The Codes have to be approved by both Houses of Parliament at five yearly intervals and auditors have a statutory duty to comply with them. As such, they constitute secondary legislation, and the way they are drafted and the process for reviewing and revising them reflects this.

Parliament approved the current Codes on 9 March 2010.

In preparing the Codes, the Commission consults widely, engaging key organisations that represent audited bodies in local government and the NHS, the accountancy profession and the public audit agencies at each stage. In particular, the value for money element of the NHS Code must be agreed with the Care Quality Commission.

The content of the Codes

The Codes are high level documents, which focus on the Audit Commission’s core requirements and aspects of audit specific to its regime.

Each Code:

  • sets out the general principles to be followed by auditors in delivering their objectives;
  • outlines their responsibilities regarding the audit of financial statements and use of resources; and
  • sets out the range of outputs through which the results of audit are reported.

Auditors are required by the Code to report their conclusion on the audited body’s arrangements for securing economy, efficiency and effectiveness in its use of resources (VFM conclusion). More information on the approach to auditors’ value for money work can be found in the Value for money conclusion page.

The local government Code also outlines how auditors should fulfil statutory functions outlined in the Act. These functions are:

  1. to give electors the opportunity to raise questions about the accounts and consider and decide upon objections received in relation to the accounts
  2. to apply to the court for a declaration that an item of account is contrary to law
  3. to consider whether to issue and, if appropriate, to issue an advisory notice or to make an application for judicial review

The Commission has produced advice to help members of the public understand their rights to inspect, and of local objectors to question and object to, local government bodies’ accounts and to explain the powers of the auditor.

A schedule to the local government Code outlines the distinct approach to the audit of smaller bodies, such as parish councils, to which it is inappropriate to apply the same level of audit scrutiny as principal bodies because of the relatively small amounts of public money controlled by the bodies in question.

Statements of Responsibilities

The Commission’s Statements of Responsibilities of Auditors and Audited Bodies support the Codes. The Statements of Responsibilities of Auditors and Audited Bodies assist auditors and audited bodies by summarising where – in the context of the usual conduct of an audit – the different responsibilities of auditors and of the audited body begin and end, and what is to be expected of the audited body in certain areas. As with the Codes, the Commission has prepared separate statements of responsibilities for local government and the NHS.

Audit reporting

The results of audit work are communicated in a range of reports:

  • the audit planning document – which sets out how auditors intend to carry out their responsibilities, in the light of their assessment of risks, and which will be kept under review and updated as necessary
  • oral and/or written reports or memoranda to officers and, where appropriate, members, on the results of, or matters arising from, specific aspects of auditors’ work – which should be prepared and issued or delivered as soon as possible after completion of the work
  • a report to those charged with governance summarising the conclusions of the auditor – which should cover the full range of auditors’ responsibilities under statute and the Code. In accordance with professional standards, this report has to be issued before the auditor finalises, and issues, his or her opinion on the financial statements
  • an audit report, including the auditor’s opinion on the financial statements and a conclusion about whether the audited body has put in place proper arrangements for securing economy, efficiency and effectiveness in its use of resources
  • a certificate that the audit of the accounts has been completed in accordance with statutory requirements
  • an annual audit letter – which should communicate to the audited body and external stakeholders, including members of the public, the key issues arising from auditors’ work that they consider should be brought to the attention of the audited body. It should highlight the key issues drawn from the report to those charged with governance and auditors’ conclusions on relevant aspects of the audit. It should be prepared in clear language that is concise and accessible to a wide audience.

Other reports may be issued at any point during the audit process, where appropriate:

  • section 8 of the Act requires auditors to consider whether, in the public interest, they should report on any matter that comes to their attention in the course of the audit so that it may be considered by the body concerned or brought to the attention of the public
  • under Section 11(3) of the Act auditors of local government bodies may make written recommendations that need to be considered and responded to publicly. Where the auditor considers it necessary to make such recommendations, these can be included, where relevant, within other written outputs from the audit or they may be the subject of a specific report to the audited body
  • from time to time, auditors may be required to report information to the Commission in a specified format to enable it to carry out any of its other functions, including assessments of performance at relevant bodies, or to assist the Care Quality Commission and the National Audit Office in carrying out their functions


Code of audit practice – local government 2010
Code of audit practice – health 2010