Income inequality has a profound impact not only on individuals’ and families’ living conditions and their health status, but also on societies as a whole by threatening social cohesion, curbing economic growth and weakening trust in institutions. Most OECD member countries have adopted a mixture of public policies to reduce income inequality in society and its long-term effect on economic progress. These include social protection and insurance systems financed through a combination of cash transfers and progressive income taxes. They have also used specific fiscal stimulus packages to boost demand and cushion poorer households from the impact of crises such as the COVID-19 pandemic. These measures, aimed at addressing income inequality by redistributing income between rich and poor, but also between generations, could also provide support to age groups in greater need. Finally, other elements, such as wealth taxation, could also increase the effectiveness of redistributive policies (Kuypers et al., 2021).
In 2018, average income inequality among the working-age population of OECD countries, as measured by the Gini coefficient, was 0.41 before taxes and transfers, and 0.31 after government intervention in the form of taxes and transfers (on a scale where 0 represents perfect equality and 1 perfect inequality). Redistribution levels are the highest in countries with consolidated welfare states, such as Ireland (39% difference in Gini before and after taxes and transfers), Belgium (38%) and Finland (36%). At the other end of the spectrum, Chile (5%) has the lowest level of income redistribution after government intervention (Figure 13.7).
Among OECD countries with available information, the Gini coefficient after taxes and transfers remained practically unchanged between 2012 and 2018. However, the average hides significant changes in some countries. For example, inequality fell significantly in Estonia (6.5 points), Greece (3.2) and Portugal (2.8), while it increased slightly in Switzerland (1.7 points), Denmark (1.6) and Finland (1.5) (Figure 13.8).
In 2018, 11.2% of the population in OECD countries could be considered poor in terms of relative income poverty after taxes and transfers. The figures range from over 17% in the United States and Latvia to less than 6% in Iceland. Between 2012 and 2018 relative income poverty increased the most in Latvia (4.2 p.p.) Germany (2 p.p.) and the Netherlands (1.4 p.p.) while it decreased most significantly in Greece (2.8 p.p.), Portugal (2.6 p.p.) and Mexico (2.30 p.p.) (Figure 13.9).
