In 1999-2000, the ANAO conducted an audit in Centrelink to determine whether its planning, monitoring and costing arrangements provided a sound basis to underpin its delivery of quality, cost effective customer services. The report of that audit, Audit Report No. 43 1999-2000 Planning and Monitoring for Cost Effective Service Delivery, Staffing and Funding Arrangements, was tabled in Parliament in May 2000. The objective of this follow-up audit was to assess whether Centrelink had implemented a comprehensive costing system as a basis for planning productivity improvements and accounting for its expenditure of purchaser funds. The ANAO examined Centrelink's current costing system to determine if it reflected the design and implementation characteristics that were outlined in Audit Report No. 43.