In today's highly competitive manufacturing industry, achieving sustainable success requires constant innovation and cost optimization. Two proven methodologies for achieving these goals are Kaizen and Target Costing. Kaizen, a Japanese concept that translates to "continuous improvement," focuses on optimizing processes and eliminating waste to achieve maximum efficiency. Target Costing, on the other hand, is a cost management approach that sets a target cost for a product based on customer needs and competitive pricing, and then works backward to achieve that cost through efficient design and production. This paper explores the potential of combining Kaizen and Target Costing to offer the ultimate solution to the manufacturing business. By integrating these methodologies, manufacturers can achieve both continuous improvement and cost optimization, leading to sustainable success. This paper will delve into the principles and practices of Kaizen and Target Costing and provide real-world examples of their successful implementation in manufacturing businesses. Additionally, the paper will discuss the challenges that may arise during implementation and offer suggestions for overcoming them. Overall, this paper argues that the integration of Kaizen and Target Costing offers a powerful solution to the challenges faced by manufacturing businesses today, enabling them to achieve sustainable success in a highly competitive market.