Is inequality within countries falling on average?
Core argument: Adjusting survey incomes for underreporting, the authors find that within-country income inequality is falling on average and has been largely constant since the 1990s.
We propose a novel procedure to adjust reported survey incomes for underreporting. Underreporting of income by the bottom 50% of the world income distribution has become particularly important in recent decades. We reconfirm the findings of the literature that global poverty and inequality have declined dramatically between 1980 and 2019. Finally, we find that within-country inequality is falling on average, and has been largely constant since the 1990s.

