Sweden has been known for having one of the most equal income distributions in the world. However, in recent decades, Sweden has experienced increasing income inequality. An alternative way of measuring the development of inequality is to study and compare the income development within and between two birth cohorts according to gender and different positions of income distribution. The focus in this paper is to study how individual disposable personal income has changed by aging and at various positions of the income distribution, as well as the gender disposable income gap and intragenerational income mobility. Three positions of the income distribution were chosen: percentile 10; median; and percentile 99. Two cohorts, including all individuals born in 1948 and 1958, were tracked from 35 years of age to 53 years of age – with two 18-year overlapping periods, 1983–2000, and 1993–2010. The results show a complex and multifaceted image of the development of income inequality and mobility, within and between the two birth cohorts. Especially male low-income earners, born 1958, have been left behind. Income mobility differ according to gender where women have increased mobility in the bottom quintile and decreased in the top quintile, men experienced the opposite. When modelling mobility education have decreased to contribute to an upward mobility, especial for cohort born 1958. Taking all the results together, the development of increasing income inequality in Sweden is apparent.
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