Income Tax and National Insurance are now sufficiently similar that merging them appears to be a plausible option, yet still sufficiently different that integration raises significant difficulties. This paper surveys the potential benefits of integration – increased transparency and reduced...

This article analyzes profit taxation according to the arm's length principle in a new model where heterogeneous firms sort into foreign outsourcing. We show that multinational firms are able to shift profits abroad even if they fully comply with the tax code. This is because, in equilibrium,...

Heterogeneous firm productivity seems to provide an argument for governments to pursue `pick-the-winner' strategies by subsidizing highly productive firms more, or taxing them less, than their less productive counterparts. We appraise this argument by studying the optimal choice of effective tax...

Emission trading has become recently more and more import in environmental regulation. In the context of controlling greenhouse gas emissions, the directive on a Europewide trading scheme for large immobile sources may be perceived as one of the most important milestones in recent years. Prior...

Dieser Aufsatz analysiert die Effekte der staatlichen Steuer- und Subventionspolitik hinsichtlich ihrer Wirkung auf das langfristige Wirtschaftswachstum. Untersucht werden mehrere einkommens- und gewinnabhängige Steuern auf Haushalts- und Unternehmensebene sowie eine von den Haushalten erhobene...

The paper analyzes under which conditions a partial tax cooperation will be welfare enhancing within the cooperating regions. Starting from the standard symmetric tax competition model, subgroups of regions can form tax cooperations and thereby increase their relevant market share. As the...

In this paper, we consider optimal tax enforcement policy in the presence of profit shifting towards tax havens. We show that, under separate accounting, tax enforcement levels may be too high due to negative fiscal externalities. In contrast, under formula apportionment, tax enforcement is...

Die Abgrenzung des Erfolges multinationaler Unternehmungen (MNU) für körper-schaftsteuerliche Zwecke erfolgt im Regelfall im Rahmen des Fremdvergleichsgrundsatzes, konkretisiert durch die Transferpreisrichtlinien der OECD. Dieses Erfolgsabgrenzungsparadigma steht im systematischen Gegensatz zu...

In recent years, some European countries have relied on elements of an allow-ance for corporate equity (ACE) in the design of their tax systems. We analyse the effects of ACE-based taxation on rates of return and effective tax rates. In-vestment neutrality is lost if the imputed interest rate...

Economic agents who face the diversity of tax systems demand condensed but sophisticated information on effective tax burdens. We analyse common features and differences between important forward-looking concepts of measuring effective tax rates in business management and economics and develop...