Updating LIS Estimates with the Latest 2021 PPPs
With the Winter data release, LIS is adopting the updated 2021 Purchasing Power Parity (PPP) rates issued by the World Bank in May 2024. These new PPPs, produced with improved data collection and methodological refinements, offer more accurate cross-country comparisons by better reflecting real price-level differences.
The World Bank has also revised its international poverty lines (June 2025), increasing all thresholds to account for inflation and updated national standards.
LIS has assessed how these updates—the new PPP base year and revised poverty lines—affect indicators such as median income and absolute poverty, providing users with an initial benchmark for updating their own estimates.
For further details on this update, please consult this article here. An extended LIS Technical Working Paper will be released shortly.
Note: PPP values for 2017, and 2011 remain available and accessible on the LIS website and through the LISSY system.