It is calculated based on an assessment of several criteria, each of which is based on a point system whereby a higher score is given to land-use changes that represent a higher conservation value or greater ecosystem services or that cause a greater environmental impact (Table 7.4). For instance, the maximum score (27) equals an equivalence ratio of 6, whereas the minimum score (6) equals an equivalence ratio of 1.3. Transparency of the in-lieu fee calculation is ensured as it is based on published reference costs (CONAFOR, 2011) and clear criteria to determine the equivalence ratio.