This Master s Thesis deals with the use of internal audit within the context of Supply Chain Risk Management, as an adding value mechanism to the organization. Supply Chain Risk Management relies on the identification and management of supply chain risks in order to reduce vulnerabilities along the supply chain. The purpose of internal auditing is to make recommendations that promote the efficiency and effectiveness of operations that can help the organization to achieve business goals and thereby corroborate with risk management. The purpose of this research is to analyze the supply management being adequately provisioned to customers showing that with the use of Holt-Winters (HW) demand-forecasting it is possible to highlight the customers with the implementation of the Vendor Managed Inventory (VMI) method in order to reduce logistics costs. The results present an overview of how and what can be done by internal audit, in order that academic researchers and managers can benefit from this work by using the concepts and content brought together in the document as a subsidy to further studies, audit practices and overall risk management. Gains related to the cost reduction were also obtained within the studied corporation, reinforcing the contribution of this study s results to the industry.