Spiritus, Kevin; Lehmann, Etienne; Renes, Sander; … - 2022
We analyze the optimal nonlinear income tax schedule when taxpayers earn multiple incomes and differ along many … unobserved dimensions. We derive the necessary conditions for the government s optimum using both a tax perturbation and a … method to find the optimal tax schedule. Applied to the optimal taxation of couples, we find that optimal isotax curves are …