Abstract:
The objective of this thesis is to apply the Activity-Based Cost System to estimating standard cost of case study product by starting study work breakdown structure (WBS) and analyzes activity, specify cost drives, calculate quantity of cost drivers and calculate costs per cost driver rates, allocate cost of support unit to each process. This system is different from traditional cost allocation which allocated cost by sales of particular product. It was found that the standard cost of product calculated by Activity-Based Cost was different from that of traditional cost allocation, the variation of T19, S25, and T10 products from actual cost were 0.05%, -0.39%, and 8.06%, respectively. Therefore, the standard cost of product calculated by this system is nearly equal the actual cost. Then, this system was accepted by the executives and will be able to apply this information to select low-cost activity to decrease manufacturing cost further.