Manufacturing companies face challenges in today's competitive environment. Implementing product lifecycle management (PLM) with a focus on cost control can help. PLM helps manage all aspects of a product's lifecycle, from creation to disposal. Product lifecycle cost is crucial for PLM. A framework for a product lifecycle costing system has been developed to support decision-making, especially in the early stages of a product's life. This system uses methods like case-based reasoning and activity-based costing to calculate development costs and optimize overall product development costs.