Business Administration, Business Process and Supply Chain Management Degree Project (master), 15 higher education points, 4FE06E, Spring 2013 Authors: Jeremy Bellina, Olegs Bodins, Soeren Krieger and Mathilde Olivier Tutor: Roger Stokkedal Title: Managing Upstream Supply Chain in Order to Decrease Inventory Level: A Case Study on the Paper Merchant Papyrus Sweden. Background: The research is based on Papyrus Sweden, a paper merchant, which is facing a decrease in the demand of paper products. It was identified that inventory level reduction is now crucial for the company in order to stay in the market. Therefore, Papyrus Sweden is focused on inventory level and tied-up capital reduction in order to decrease costs and increase net profit. Purpose: This thesis aims to analyze the current situation in Papyrus Sweden in terms of inventory level and activities related to suppliers, and prepare recommendations which could help Papyrus Sweden to reduce its inventory level. Method: The data has been collected through interviews with managers from the supply chain department as well as through a data sample from Papyrus Sweden database given to the researchers. All data was analyzed and compared with the literature review. Data received from the database was processed and transformed in Microsoft Excel in order to make the analysis. Results: The analysis identifies issues in material planning methods, safety stock calculation, ABC-XYZ classification and forecast calculation, on which Papyrus Sweden could act in order to decrease its inventory level. Furthermore, the researchers identify two solutions Papyrus Sweden could implement with its suppliers in order to reduce inventory level which are a Service Level Agreement and a Vendor Managed Inventory system. Keywords: inventory level, material planning method, safety stock, ABC-XYZ classification, forecast calculation, replenishment lead time, supplier relationship, information sharing, Service Level Agreement (SLA), Vendor Managed Inventory (VMI) and Collaborative planning, forecast and replenishment system (CPFR).