We Need To Tax BillionairesGabriel Zucman, Basic Books, £9.99GABRIEL ZUCMAN, professor of Economics at the Paris School of Economics, employs a novel way of assessing how much tax the super-rich pay. Instead of looking at nominal rates or estimates of the income the super-rich choose to disclose, he has analysed National Income data (essentially, the total wages and profits) across socio-economic groups and compared it with estimates of how much tax of every type (direct and indirect) these groups pay.