In order to make its certification financially accessible to all those qualified to participate, despite the wide variance in economic conditions throughout the world, IBLCE uses the purchasing power parity (PPP) per capita metric as determined by international organisations such as the World Bank and the International Monetary Fund and used by a number of international NGOs. PPP takes into account the relative cost of living and the inflation rates of countries. Further information on fees can be found in the IBLCE Fee Guide.