The paper describes a global model consisting of several industrial and developing country blocks built to analyze alternative economic policies in a medium-term context. The model, which has been used to construct medium-term scenarios for the World Economic Outlook, consists of aggregate...

This background paper describes five different tools that can be used for the assessment of tax incentives by governments in low income countries' (LICs). The first tool (an application of cost-benefit analysis) provides an overarching framework for assessment. Evaluations of the various costs...

Experience shows that there is often ample room for more effective and efficient use of investment tax incentives in low-income countries. Tax incentives generally rank low in investment climate surveys in low-income countries, and there are many examples in which they are reported to be...

The incentives for domestic investment in debtor countries are influenced by the terms of their external obligations and by the system of taxation utilized to provide government revenue for debt payments. It is well known that existing debt contracts could be altered to improve the incentives...

This paper explores how the tax treatment of investment and savings affects international capital flows as well as national and global welfare. Focusing on portfolio investment, it evaluates the international effects of capital income taxes in the United States and Japan. During the 1980s, these...

This paper considers the merits of reducing or eliminating some specific tax expenditure measures currently in force in the United States with a view to reducing the federal fiscal deficit. The paper starts from the observation that savings decisions in the United States are distorted and that...

Compared with its U.S. and U.K. counterparts, the Labor Tax Credit (LTC) is likely to have more limited effects on incentives for primary-earners to enter the labor force, because of the smaller size of the credit. Any significant increase in the LTC to strengthen its effect on the still large...

Enhancing public and private investment, but also ensuring that this translates into higher growth and employment, have long been key policy challenges in Arab countries. Reflecting an improvement in policies and global conditions, investment rates in Arab countries have increased over the past...

In this paper, we first introduce investment-specific technology (IST) shocks to an otherwise standard international real business cycle model and show that a thoughtful calibration of them along the lines of Raffo (2009) successfully addresses the ""quantity"", ""international comovement"",...