We study the interactions between fuel efficiency improvements in the transport sector and the oil market, where the efficiency improvements are policy-induced in certain regions of the world. We are especially interested in feedback mechanisms of fuel efficiency such as the rebound effect,...

I investigate a simple model of advance-purchase contracts as a mode of financing costly projects. The analysis can easily be reinterpreted as a model of the monopolistic provision of excludable public goods under private information. An entrepreneur has to meet some capital requirement in order...

Implicit in the text-book monopoly is an assumption of complete and instantaneous information or knowledge available to economic agents at free of charge. Under such circumstances, knowing the certain price and cost functions, the monopolist can make an optimal decision of price and output to...

We examine a monopolistic supplier's decision about a pure public good when he/she must negotiate with beneficiaries of the good. In our model, while the level of the public good is decided unilaterally by the supplier, the cost share of the public good is negotiated between the supplier and...

The study offers a summary on major postal payment services in the domestic payment market. In addition to their share based on volume, the importance of these services lies in that more than one-fourth to one-third of Hungarians does not have a bank account (bank relationship), meaning that for...

We provide a welfare based interpretation of the capital tax ambiguity result (due to Guo & Lansing, 1999). We show that the sign ambiguity of optimal capital tax rate in an imperfectly competitive economy is mainly due to the welfare cost of investment. The substitution and income effects of...

Evidence of declining trend in OECD economies' income tax rates and the concern of enhancing competition in the US and the EU product markets subtly motivate the question if low income tax rates are optimal in an imperfectly competitive economy. This paper examines optimal income tax policy in a...

In this paper we calibrate the social cost of optimal taxes in a class of imperfectly competitive economies and examine the correspondence of this social cost with the number of tax instruments and the number and the sources of distortions. We calibrate the Ramsey equilibrium for three standard...

In some industries, monopoly is natural. One provider can serve the relevant demand cheaper than two or more firms. If the monopoly is not contestable, i.e. not controlled by a credible threat of entry, regulation is necessary. The essential facilities doctrine is one such regulatory tool. It...

We study a two-sided market where a platform attracts firms selling differentiated products and buyers interested in those products. In the unique subgame perfect equilibrium of the game, the platform fully internalizes the network externalities present in the market and firms and consumers all...