My demonstration on the income distribution effects of a having a global 20% additional tax on disposable income and an even distribution of the tax revenue. The calculation does not take behavioural effects into account. They could be significant.
Below the income distribution by percentiles.
Data source: https://stonecenter.gc.cuny.edu/research/lakner-milanovic-world-panel-income-distribution/
I’d like to know if there is a newer data source available.