The series of top fiscal income shares for Ireland have been extended to 2015 by Brian Nolan. In 2015, the top 1% fiscal income share reached 11.5%.
Top 1% fiscal income share, Ireland, 1938-2015
十月 31, 2018
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What distinguishes WID.world’s inequality data from the OECD, the World Bank, or other inequality data providers?
Only few institutions provide inequality estimates and those who do so (e.g. the the OECD or the World Bank data portals) rely for the most part on household surveys. One key problem with surveys, however, is that they are based upon self-reporting and are well known to underestimate top incomes and top wealth shares. In addition, surveys only cover a limited time span and make it impossible to offer a long-term perspective on inequality trends.
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Estimates for national accounts (such as national income and national wealth) found on WID.world and on international statistical institutions databases are generally consistent, buy can vary for several reasons.
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Over the past decades, the increase in economic inequalities was largely driven by a rise in income and wealth accruing to the top of the distribution. However, household surveys, the data sources traditionally used to observe these dynamics, do not capture these evolution very well. They provide useful information and cover a lot of countries but do not inform adequately on income and wealth levels of the richest individuals.
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