The IMF has advised country authorities to roll back tax expenditures as a way to support fiscal consolidation efforts—urging them to evaluate tax expenditures according to clear criteria, and assessing their impact on public finances, economic efficiency, equity, and administrative and...

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...

This paper assembles a new dataset on corporate income tax regimes in 50 emerging and developing economies over 1996-2007 and analyzes their impact on corporate tax revenues and domestic and foreign investment. It computes effective tax rates to take account of complicated special regimes, such...

Stress testing is a useful and increasingly popular, yet sometimes misunderstood, method of analyzing the resilience of financial systems to adverse events. This paper aims to help demystify stress tests and illustrate their strengths and weaknesses. Using an Excel-based template with...

This paper evaluates the nature and extent of, and possible responses to, two of the central challenges that globalization poses for revenue mobilization in Sub-Saharan Africa (SSA): from corporate tax competition, and from trade liberalization. It does so using a new dataset with features...

This paper provides an overview of full and partial allowance for corporate equity (ACE) tax systems in practice. In the recent past, ACE systems have been used in Austria, Croatia, and Italy. Brazil still applies a variant of such a system and Belgium introduced one this year. This paper...

This paper provides an overview of the key economic factors that shape tax policy reform in many high-income countries, developing countries, and/or transition economies. The paper describes and evaluates global and regional developments with respect to tax rates and revenue ratios over the last...