“…Indeed, the empirical literature suggests that the so‐called elasticity‐of‐taxable‐income, which captures not only labour supply but also other responses, is much higher for higher incomes (Gruber and Saez, ; Saez et al ., ). Jongen and Stoel () also estimate a substantial elasticity‐of‐taxable‐income for high incomes in the Netherlands. However, there is an active debate over whether the elasticity‐of‐taxable‐income for high income earners measures real distortions (Chetty, ; Saez et al ., ; Piketty et al ., ; Doerrenberg et al ., ).…”