This article describes the form and relevancy of the Computable General Equilibrium Models (CGEM), used to predicts economic impact in th one economy. Includes detailed explanation of the process and phases to develop the CGEM, beginning with the economic and mathematic model, and including the policy statements. All the study in based on the Valle del Cauca's CGEM model development by Sierra and Manrique [1], quantifying the impact of the bigger commercial opening in the Valle del Cauca due to CAN-MERCOSUR agreement.
