The paper provides a framework for designing international tax rules by outlining the various behavioral margins they apply to. It then goes on to analyze three specific policy issues in terms of preserving the neutrality of choices along the relevant margins: (1) Which foreign taxes should be...

The use of digital services is largely non-rival. This paper argues that vanishing marginal costs of supply change policy incentives. Small countries are incentivized to tax the import of digital services. In fact, various countries have already moved towards expanded source taxation of online...

This paper examines the impact of thin capitalization rules that limit the tax deductibility of interest on the capital structure of the foreign affiliates of US multinationals. We construct a new data set on thin capitalization rules in 54 countries for the period 1982-2004. Using confidential...

Thin capitalization rules limit firms f ability to deduct internal interest payments from taxable income, thereby restricting debt shifting activities of multinational firms. Since multinational firms can limit their tax liability in several ways, regulation of debt shifting may have an impact...

The 2017 US tax legislation - widely referred to as the Tax Cut and Jobs Act (TCJA) - fundamentally transformed the US system of international taxation. It ostensibly ended worldwide taxation but introduced, for instance, a new tax on "Global Intangible Low-Taxed Income" (GILTI). This paper...

State borders create a discontinuous tax treatment of retail sales. In a Nash game, local tax rates will be higher on the low-state-tax side of a border. Local taxes will decrease from the nearest high-tax border and increase from the low-tax border. Using driving time from state borders and all...

The employment of capital is rival in nature. Small countries do not benefit from taxing its employment. By contrast, the use of digital services is non-rival and small countries do benefit from taxing expenditures on such services. In fact, some countries have already decided to tax digital...

We develop a tax competition model that allows for the setting of both an origin-based and a destination-based commodity tax rate in the presence of avoidance and evasion. In the presence of evasion, jurisdictions will give cross-border shoppers tax preferential treatment, thus not fully...

I leverage a Pakistani tax reform that cuts the tax rate on the supply chains of five major industries of the country from 15% to 0% to cast light on the extent of, and mechanisms driving, VAT noncompliance in a representative emerging economy. I find that firms overclaim refunds by 22% and...