The status, functions and main duties of the C&AG and the NIAO are set down in legislation, including
- the Audit (Northern Ireland) Order 1987(external link opens in a new window / tab),
- the Northern Ireland Act 1998(external link opens in a new window / tab),
- the Government Resources and Accounts Act (Northern Ireland) 2001(external link opens in a new window / tab) and;
- the Audit and Accountability (Northern Ireland) Order 2003.(external link opens in a new window / tab)
The principal legislative authority for the responsibilities of local government auditors is contained in
- the Local Government (Northern Ireland) Order 2005(external link opens in a new window / tab),
- the Local Government (Accounts and Audit) Regulations (Northern Ireland) 2006.(external link opens in a new window / tab) and;
- the Local Government (Northern Ireland) Act 2014(external link opens in a new window / tab).