The purpose of the report was to report to the Parliament on how effectively and efficiently the Australian Taxation Office administers the Tax File Number System, and to identify opportunities for improvement of that system. The ANAO developed a methodological framework for the evaluation of the efficiency and effectiveness of the ATO's administration of the TFN system. The framework examined the TFN system; individuals and their TFNs; TFN withholding tax arrangements; and TFN information matching.

The objective of the audit was to ascertain and report to Parliament on the Australian Taxation Office's administration of the Fringe Benefits Tax and to identify opportunities for improvement. The ANAO identified five key issues relevant to the effective administration of FBT:

• knowledge of the taxpayer base;
• education of taxpayers;
• client service - advice handling;
• other enforcement activities - audits and reviews; and
• the systems required to support the administration of FBT, including staff skills and training information systems.

The issues examined by the ANAO were considered on two levels. First, legal and ethical processes that focus on whether there are any impediments to the Government and public service implementing the CEIP in the way they have. The public interest issues turn largely on the question of whether the CEIP was for Government or party-political purposes. The other level on which these issues were considered is that of public accountability and the way in which decisions to spend public money are made. In turn, these issues raise questions about the relationship between, and authority of, the Government and Parliament. They may also involve consideration of what might be regarded as proper or responsible conduct by governments and the public service.