@article{YokoteCasajus2017, author = {Koji Yokote and Andr{\´e} Casajus}, title = {Weak differential monotonicity, flat tax, and basic income}, doi = {10.1016/j.econlet.2016.12.011}, year = {2017}, abstract = {We suggest a weak version of differential monotonicity for redistribution rules: whenever the differential of two persons' income weakly increases, then their post-redistribution rewards essentially change in the same direction. Together with efficiency, non-negativity, and the average property, weak differential monotonicity characterizes redistribution via taxation at a fixed rate and equal distribution of the total tax revenue, i.e., a flat tax and a basic income.}, language = {en} }