Aiming to balance market supply and financial goals, avoiding excessive costs with inventories, this dissertation proposes a model of stock management of asphalt for the enterprise in study. The developed management model aims to enhance the current management model, which is based on employees and collaborators experience, introducing measurements and academic grounds to the enterprise practices. This assessment aims to deliver the calculation of the safety stock levels on a quarterly basis instead of an annual basis due to the seasonality of the demand (the potential gains of quarterly calculation compared to the annul calculation will also be presented) and considering the uncertainties of production demand and lead time, the level of service being limited due to the capacity to stock, the definition of the stock control policies, the calculation of the replenishment point, and a comparison between current and theoretical stock costs, including as final product, an automatic spreadsheet for the exclusive use of the analyzed company, to update the variables and calculations when necessary.