Working Papers
2007
June 1, 2007
Persistent Gaps, Volatility Types, and Default Traps
Description: We show that cross-country differences in the underlying volatility and persistence of macroeconomic shocks help explain two historical regularities in sovereign borrowing: the existence of "vicious" circles of borrowing-and-default ("default traps"), as well as the fact that recalcitrant sovereigns typically face higher interest spreads on future loans rather than outright market exclusion. We do so in a simple model where output persistence is coupled with asymmetric information between borrowers and lenders about the borrower's output process, implying that a decision to default reveals valuable information to lenders about the borrower's future output path. Using a broad cross-country database spanning over a century, we provide econometric evidence corroborating the model's main predictions-namely, that countries with higher output persistence and conditional volatility of transient shocks face higher spreads and thus fall into default traps more easily, whereas higher volatility of permanent output tends to dampen these effects.
June 1, 2007
Public Debt Markets in Central America, Panama, and the Dominican Republic
Description: This paper-consisting of a regional study and seven country studies-reviews the state of domestic public debt markets in Costa Rica, Dominican Republic, El Salvador, Guatemala, Honduras, Nicaragua, and Panama as at end-2005. Although they account for the lion's share of capital markets, regional public debt markets remain underdeveloped for a variety of reasons. The problems of small scale, dollarization, and weak public finances in many countries are compounded by poor structure and composition of debt (with sizeable nonstandard and non-tradable components), fragmentation of public debt between central banks and the sovereigns and across instruments, poor debt management practices, weaknesses in securities market, and small investor bases all of which result in high transaction costs and a lack of liquid benchmarks. The paper also briefly discusses efforts towards and impediments to regional integration of public debt markets. The authorities recognize these problems and the paper takes note of the regional efforts to harmonize debt standards and improve issuance practices. It offers several recommendations to improve strategic debt management, issuance mechanics, and secondary trading.
June 1, 2007
U.S. Revenue Surprises: Are Happy Days Here to Stay?
Description: A key question for U.S. policymakers is whether the recent strength in federal revenue is likely to continue. This question is addressed through an econometric analysis of the determinants of tax revenue, using time series that are adjusted for tax policy changes. The results suggest that growth in corporate profits and capital gains each contributed forty percent of the increase in the revenue-to-GDP ratio from 2004-2006, and rising income inequality explains much of the rest. While part of the revenue rise is the result of structural changes taking place in the U.S. economy, some of the recent buoyancy is likely to prove temporary, reflecting the highly cyclical nature of these variables.
June 1, 2007
VAT Attacks!
Description: Like the theory of the second best that the 2006 congress marks, the VAT is now fifty years old. Judged by the extent and speed of its spread around the world, and the revenue that it raises, the VAT would seem to have been a remarkable success. Over the last few years, however, it has come under a series of attacks. This paper considers three of the most prominent of these. One is the fear (raised mainly in the United States) that the VAT actually does too good a job of raising tax revenue. The second is the view that the VAT does a bad job of taxing the informal sector-and that tariffs might be a better revenue-raising instrument for many developing countries. The third attack is the most literal, by criminals rather than theorists: in the European Union and elsewhere, sophisticated VAT fraud, targeting its refund provisions, has become a serious concern.
June 1, 2007
Testing for Cointegration Using the Johansen Methodology when Variables are Near-Integrated
Description: We investigate the properties of Johansen's (1988, 1991) maximum eigenvalue and trace tests for cointegration under the empirically relevant situation of near-integrated variables. Using Monte Carlo techniques, we show that in a system with near-integrated variables, the probability of reaching an erroneous conclusion regarding the cointegrating rank of the system is generally substantially higher than the nominal size. The risk of concluding that completely unrelated series are cointegrated is therefore non-negligible. The spurious rejection rate can be reduced by performing additional tests of restrictions on the cointegrating vector(s), although it is still substantially larger than the nominal size.
June 1, 2007
Trade Reform in the CEMAC: Developments and Opportunities
Description: This paper provides an update on the main elements of the reform agenda concerning the CEMAC trade regime as well as a tentative quantitative assessment of selected effects on tariff revenues and trade patterns. Notwithstanding data limitations, the key messages from the analysis are as follows. First, there is a need for a renewed political commitment to regional integration. In addition, key measures for improving compliance with the requirements for a customs union need to be introduced, including limiting tariff exemptions, phasing out remaining surcharges, strengthening the determination of products' country origin, and enhancing customs administration. There is also a need to improve transportation infrastructure and organization. Finally, there is a strong case for tariff reduction, with or without an EPA. Trade liberalization would help boost economic growth and poverty alleviation and limit risks of trade diversion with an EPA. Tariff reform should be complemented by improvements in domestic revenue mobilization.
June 1, 2007
Pooling Risk Among Countries
Description: In this paper, we identify the groups of countries where international risk-sharing opportunities are most attractive. We show that the bulk of risk-sharing gains can be achieved in groups consisting of as few as seven members, and that further marginal benefits quickly become negligible. For many such small groups, the welfare gains associated with risk sharing can amount to one order of magnitude larger than Lucas's classic calibration suggested for the United States, under similar assumptions on utility. Why do we not observe more arrangements of this type? Large welfare gains can only be achieved within groups where contracts are probably seen as relatively difficult to enforce. International diversification can thus yield substantial gains, but these may remain untapped owing to potential partners' weak institutional quality and a history of default on international obligations. Noting that existing risk sharing arrangements often have a regional dimension, we speculate that shared economic interests such as common trade may help sustain such arrangements, though risk-sharing gains are smaller when membership is constrained on a regional basis.
June 1, 2007
Budget Rigidity and Expenditure Efficiency in Slovenia
Description: This paper assesses the relative efficiency and flexibility of public spending in Slovenia compared to the advanced and new EU member states. Spending on health care, education, and social protection is relatively high in Slovenia without achieving correspondingly better outcomes. Inefficiencies appear to stem from the financing mechanisms for social services, institutional arrangements, and the weak targeting of social benefits. In addition, the composition of spending appears to be strongly tilted towards nondiscretionary items that reduce the fiscal room for maneuver. Greater flexibility is needed to facilitate the reallocation of relatively inefficient expenditure into higher priorities. In this manner, medium-term expenditure rationalization can focus on reducing inefficient outlays rather than restraining traditionally flexible components of the budget, such as public investment.
June 1, 2007
France in the Global Economy: A Structural Approximate Dynamic Factor Model Analysis
Description: This study identifies the main shocks that cause fluctuations in French output and their channels of transmission. It uses a large-dimensional structural approximate dynamic factor model. There are three main findings. First, common shocks, especially demand shocks, which seem to originate from the U.S., play an important role in explaining French economic activity. While international trade, relative prices, and FDI flows are the main channels of transmission, the stock market, consumer confidence, and interest rates also matter. Second, France's integration with the rest of the world has increased over time. Third, there is some tentative evidence of regional components in explaining French output fluctuations; countryspecific components also contribute. The predominance of exogenous factors affecting French output, the asymmetry in the transmission of shocks, and France's participation in a currency area, argue for making French goods, services, and labor markets as flexible as possible.
June 1, 2007
The Ties that Bind: Measuring International Bond Spillovers Using Inflation-Indexed Bond Yields
Description: This paper explores international bond spillovers using daily and intra-day data on yields on inflation-indexed bonds and associated inflation expectations for the United States, Australia, Canada, France, Sweden, Japan, and the United Kingdom. The analysis starts in 2002, by which point U.S. inflation-indexed markets were fully mature. Real bond yields are found to be closely linked across countries, with developments in U.S. markets determining around half of real foreign yields and no evidence of spillovers back to the United States. Spillovers in inflation expectations are smaller and the direction of causation is less clear.