This paper derives analytical expressions for the revenue elasticity of consumption taxes and combined income-consumption tax systems, analogous to those familiar for income taxes. It provides measures of tax revenue elasticities which can readily be applied in practice. Analytical results...

To minimize deadweight losses, tax rates should vary unpredictably so agents cannot rearrange their work and consumption habits. As a result, optimally set tax rates will be a nonstationary time series or, put differently, changes in the tax rate will be unpredictable. This paper identifies...