Manufacturing plays a significant role in the economy of Namibia, and yet is not performing as anticipated. In this study, the role management accounting plays in the success of a manufacturing business is explored. The research study was guided by the question of whether management accounting practices have an impact on the success of a manufacturing business through decision-making, business strategy formulation and implementation processes, as well as business performance as a whole. The research methodology used for this study is a qualitative case study of the manufacturer, Namibia Breweries Limited. This study used the insight of managers involved in the business strategy formulation and implementation, as well as in the decision-making process. The interviews focused on three themes: the contribution of management accounting practices through the business strategy and decision-making process, the influence of management accounting on business performance, and finally, the management accounting systems used in a manufacturing business. The findings of the study demonstrate that there needs to be greater awareness regarding the influence of management accounting practices on the success of a manufacturing business. Also, periodic appraisals on financial performance, quality of products and personnel performance, as well as a thorough understanding of the costing system, can be essential to the success of a manufacturing business.