We study the choice between regulating interconnection charges or delegating their determination to the operators, both in a non-mature and a mature market. Three regulatory regimes are considered: full, cost-based and bill-and-keep. Delegation corresponds to bargaining about the interconnection...

This paper compares the welfare effects of three ways in which health care can be organized: no competition (NC), competition for the market (CfM) and competition on the market (CoM) where the payer offers the optimal contract to providers in each case. We argue that each of these can be optimal...

This paper introduces optimal competition: the best form of competition in an industry that a competition authority can achieve under the information constraint that it cannot observe firms' effciency levels.We show that the optimal competition outcome in an industry becomes more competitive as...

We examine the impact of fiscal policy reforms on the long-run government budget balance in a one-sector model of endogenous growth with factor income taxes, a tax on consumption, non-productive public goods expenditures, and a labour-leisure trade-off. In addition, we allow for different...

Direct incentives and punishments are the most common instruments to fight tax evasion. The theoretical literature disregarded indirect schemes, such as itemised deductions, in which an agent has an interest in that other agents declare their revenue. Itemised deductions provide an incentive for...

Abstract: The tax-bene t of interest deductibility encourages debt nancing, but regulatory and market constraints create dependency between bank leverage and risk. Using a large international sample of banks this paper estimates the short and long run effects of corporate income taxes (CIT) on...

We examine the importance of possible non-random attrition to an econometric model of life cycle labor supply including joint nonlinear taxation of wage and interest incomes and latent heterogeneity.We use a Wald test comparing attriters to nonattriters and variable addition testing based on...

In order to explore the optimal taxation of low-skilled labor, we extend the standard model of optimal non-linear income taxation in the presence of quasi-linear preferences in leisure by allowing for involuntary unemployment, job search, an exogenous welfare benefit, and a non-utilitarian...

We develop a model of human capital formation with endogenous labor supply and heterogeneous agents to explore the optimal level of education subsidies along with the optimal progressive schedule of the labor income tax and optimal capital income taxes.Subsidies on education ensure efficiency in...