This short article explains a method already used by the author in the case of Guatemala to estimate the economic consequences of the land use changes driven by oil palm plantations. The innovative method accounts not only for the direct land use change outcomes, but also the impacts on forward and backward sectors of the agricultural activities and allows for sub-national estimations, using territorial input-output-matrices. Therefore, it is suggested that this method be applied also in the case of Colombia. This would allow highlighting differences and probably also some commonalities with respect to the characteristics of the expansion of this flex crop.