This report aims to provide a primer for CGE practitioners to understand the potential to link micro (i.e., Life Cycle Assessment (LCA) and Dynamic Material Flow Analysis (DMFA)) and CGE models to model circular economy strategies. The report offers an overview of the state-of-the-art of LCA/DMFA and CGE model linkages (including 8 archetypes), key lessons from LCA/DMFA studies to macro-modelling approaches, and an example of substituting internal combustion engine vehicles with electric vehicles, considering the circularity potential of Li-ion batteries to illustrate the application of micro- and macro-modelling linkages towards circular economy scenarios.