This report discusses the benefits of Activity Based Costing (ABC) model and its implementation in CSL Limited. It also suggests the use of top down costing model for accurate identification of operational costs. The report provides a detailed overview of ABC costing model, its features, and how it aligns with the current goals and strategies of CSL Limited. It recommends the implementation of ABC costing model and provides tools for its implementation. The report also suggests the use of Top Down cost allocation approach as another management accounting tool suitable for the chosen company.