Comoros is committed to achieve Social Development Goals, but progress has been limited. The substantial cost of achieving SDG, 18.8 percent of 2030 GDP, is due to the country’s very low starting  point and the inherent difficulties associated with its small size – that limited economies of scale in  delivering public services. The persistently very weak domestic resources are another reason for the substantive cost of achieving SDGs. The ongoing commitments of the authorities in the ECF program,  with a focus on enhancing domestic revenue mobilization is a key to achieve better outcomes in this  area. The fiscal space generated by the program could be both used to restore debt sustainability and  to accelerate the achievement of SDGs in Comoros.