The audit was conducted as a joint financial statement and performance audit of Centrelink's Information and Technology (I&T) systems. The objective of the financial statement component of the audit was to express an opinion on whether Centrelink could rely on its I&T systems to support production of a reliable set of financial information for the financial statements. The objective of the performance audit component was to determine whether Centrelink's I&T systems outputs adequately met quality and service delivery targets.