| Storage is one of the most important functional elements, and the necessary conditions of the social material production. It takes a lot of manpower, material resources, financial in the activities, such as maintenance, taking in and out delivery of goods. So it is an important component part of the "third profit source". Logistics costing depends on the size of storage costing. The maintain inventory levels play an important role on customers service and the production level.On the other hand, although it have achieved many accomplishments in the past years, but the steel enterprises still have a lot of problems in costing management, especially the lagging costing concept and obsolescence method. Because of unable to meet the need of market competition, the existing costing management system must be reformed.In recent years, the arrival of Activity-Based Costing (ABC) has made it easier for organizations to understand the costing problems. But many difficulties come up when it is put into practical application. In the beginning of 2005, Robert S. Kaplan and Steven R. Anderson founded Time-Driven Activity-Based Costing. Based on the traditional ABC system, it can accommodate the complexity of real-world operations by incorporating time equations, a new feature that enables the model to reflect how order and activity characteristics cause processing times to vary. So in this paper, it takes Time-Driven ABC to research to warehouse costing of steel enterprise.Based on reading a lot of literature and researching about the process of storage, this paper builds up the activity library firstly. Then using time-driven activity-based costing, confirm the "cost per time unit of capacity" and "the unit times of activities", derive cost-driver rates, build the costing model, research the warehouse costing of steel enterprise. Finally, investigate a steel enterprise, prove the costing model practicability. |