Consumer Price Indices Used in Global Poverty Measurement

Temporal deflators are needed to compare welfare aggregates over time, and thus to measure real changes in poverty. This note describes the sources of the consumer price indices that are used for every country included in the World Bank’s estimates of global poverty, published in PovcalNet. These deflators are used to express welfare aggregates in domestic 2011 prices, for comparison with the 2011 PPP conversion factors.