Abstract:
This paper suggests a methodology to identify socially-desirable directions for poverty-alleviating tax reforms. The cost-benefit ratio of increasing any commodity-tax rate is derived from the minimization of a poverty measure subject to a revenue requirement for the government. Further, to avoid the arbitrariness of choosing a poverty line and a poverty measure, the search for a poverty-reducing tax reform is done "robustly", among other things by increasing progressively the ethical content of a pre-defined class of poverty measures. The methodology is illustrated using data from Tunisia. The results suggest that poverty could be dropped for a large class of poverty indices and a wide range of poverty lines by raising -at constant fiscal revenue- the subsidy rate on hard wheat and mixed oils and by decreasing the one on sugar and milk.