文摘
We reconsider Casajus’ (Econom Lett, 2016) foundation of flat tax and basic income. That is, redistribution via fixed-rate taxation and equal sharing of the tax revenue. We relax Casajus’ differential monotonicity into weak differential monotonicity. As Casajus, we also use efficiency and non-negativity, but add an average property. These properties characterize the afore-mentioned class of redistribution rules.