This paper proposes graphical methods to determine whether commodity tax changes are socially improving, in the sense of improving social welfare or decreasing poverty for large classes of social welfare and poverty indices. It also derives estimators of critical poverty lines and economic...

We analyze Pareto-efficient tax breaks for work-related expenses in a Mirrleesian environment. Individuals are heterogenous in their ability. In addition to a labor-leisure choice, they decide how to spend their money between normal consumption and work-related goods. We derive an efficiency...

In this paper, we conduct a theoretical analysis of the consumption and income taxes from the viewpoints of efficiency and equity, we evaluate the past and present structure of Japan’s consumption and income taxes, we consider the role of the consumption tax in stimulating the economy, in...

The Mirrlees Review recommends that commodity taxation should in general be uniform, but with some goods consumed in conjunction with labour supply (such as child care) left untaxed. This paper examines the validity of this claim in an optimal income tax framework. Contrary to the recommendation...

This paper deals with efficiency and distributional effects of marginal commodity tax reforms in economies with heterogeneous individuals. It contributes to the literature in three ways. First, a decision rule based on revenue potentialities - the ratio between marginal revenue and the tax base...

Significant change has been forecast for the Japanese Consumption Tax. Revenue needs are pressing, and the Consumption Tax appears to be underutilized. Should the rate be doubled from 5% to 10%, or more? If so, will rate increases necessitate further structural changes – recasting this annual...

The merits of capital levies depend on the likelihood of repetition, the extent of anticipation, and its effects on distribution. The relevance of these features, which in varying degrees is underdeveloped or underappreciated in pertinent literatures, is elaborated and then considered with...

The Mirrlees Review recommends that commodity taxation should in general be uniform, but with some goods consumed in conjunction with labour supply (such as child care) left untaxed. This paper examines the validity of this claim in an optimal income tax framework. Contrary to the recommendation...