Working Papers
2010
March 1, 2010
Estimating The Inflation–Growth Nexus—A Smooth Transition Model
Description: Motivated by the global inflation episode of 2007-08 and concern that high levels of inflation could undermine growth, this paper uses a panel of 165 countries and data for 1960-2007 to revisit the nexus between inflation and growth. We use a smooth transition model to investigate the speed at which inflation beyond a threshold becomes harmful to growth, an important consideration in the policy response to rising inflation as the world economy recovers. We estimate that for all country groups (except for advanced countries) inflation above a threshold of about 10 percent quickly becomes harmful to growth, suggesting the need for a prompt policy response to inflation at or above the relevant threshold. For the advanced economies, the threshold is much lower. For oil exporting countries, the estimates are less robust, possibly reflecting heterogeneity among oil producers, but the effect of higher inflation for oil producers is found to be stronger.
March 1, 2010
Asset Securitization and Optimal Retention
Description: This paper builds on recent research by Fender and Mitchell (2009) who show that if financial institutions securitize loans, retaining an interest in the equity tranche does not always induce the securitizer to diligently screen borrowers ex ante. We first determine the conditions under which this scenario becomes binding and further illustrate the implications for capital requirements. We then propose an extension to the existing model and also solve for optimal retention size. This also allows us to capture feedback effects from capital requirements into the maximization problem. Preliminary results show that equity tranche retention continues to best incentivize loan screening.
March 1, 2010
Effects of Fiscal Stimulus in Structural Models
Description: The paper assesses, using seven structural models used heavily by policymaking institutions, the effectiveness of temporary fiscal stimulus. Models can, more easily than empirical studies, account for differences between fiscal instruments, for differences between structural characteristics of the economy, and for monetary-fiscal policy interactions. Findings are: (i) There is substantial agreement across models on the sizes of fiscal multipliers. (ii) The sizes of spending and targeted transfers multipliers are large. (iii) Fiscal policy is most effective if it has some persistence and if monetary policy accommodates it. (iv) The perception of permanent fiscal stimulus leads to significantly lower initial multipliers.
March 1, 2010
Tax Revenue Response to the Business Cycle
Description: This paper examines tax revenue during the business cycle by estimating the relationship between tax revenue efficiency and the output gap. We find a positive and significant relationship between these variables; results are consistent for quarterly and annual data, and across advanced and developing economies. We also find that a worsening (improvement) in the VAT C-efficiency is driven by shifts in consumption patterns and changes in tax evasion during contractions (expansions). A key implication is that, particularly during major economic booms and downturns, policy makers should look beyond simple, long-run revenue elasticities and incorporate into their analysis the effects of the economic cycle on tax revenue efficiency.
March 1, 2010
Financial Liberalization, Structural Change, and Real Exchange Rate Appreciations
Description: We account for the appreciation of the real exchange rate in Mexico between 1988 and 2002 using a two sector dynamic general equilibrium model of a small open economy with two driving forces: (i) differential productivity growth across sectors and (ii) a decline in the cost of borrowing in foreign markets. These two mechanisms account for 60 percent of the decline in the relative price of tradable goods and explain a large fraction of the reallocation of labor across sectors. We do not find a significant role for migration remittances, foreign reserves accumulation, government spending, terms of trade, or import tariffs.
March 1, 2010
Asset Booms and Structural Fiscal Positions: The Case of Ireland
Description: Asset booms and sectoral changes can distort traditional estimates of structural fiscal revenue, and could lead to serious fiscal policy errors. This paper extends the estimation of structural revenues to take account of asset prices and sectoral changes, and applies this to the case of Ireland, where a property bust has revealed a large hole in the public finances. It is shown that excluding these factors led to a substantial bias in the estimation of structural revenues, and the structural balance prior to the crisis was much larger than earlier estimated.
February 1, 2010
The Empirics of Exchange Rate Regimes and Trade: Words vs. Deeds
Description: This paper examines the impact of exchange rate regimes on bilateral trade while differentiating the effects of "words" and "deeds". Our findings-based on an extended database for de jure and de facto exchange rate classifications-show that while fixed exchange rate regimes increase trade, there is no systematic difference in the effects of policy announcements versus actions to maintain exchange rate stability. The trade generating effect of more stable exchange rate regimes is however more pronounced when words and actions are aligned, both in the short and long-run. Policy credibility therefore plays an important role in determining the effects of de jure and de facto exchange rate arrangements such that deviations between the two could be costly. In addition, we find evidence that (i) the impact of hard pegs such as currency unions is broadly similar to that of conventional pegs; (ii) the currency union and direct peg effects evolve over time; and (iii) the effects of more stable regimes are heterogeneous across country groups.
February 1, 2010
Bank Credit During the 2008 Financial Crisis: A Cross-Country Comparison
Description: This paper empirically estimates the main determinants of bank credit growth during the 2008 financial crisis. Using a sample covering over 80 countries, this paper finds that larger bank credit booms prior to the crisis and lower GDP growth of trading partners are among the most important determinants of the post-crisis bank credit slowdown. Structural variables such as financial depth and integration were also relevant. Finally, countercyclical monetary policy and liquidity played a critical role in alleviating bank credit contraction after the 2008 financial crisis, suggesting that countries should pursue appropriate institutional and macroeconomic frameworks conducive to countercyclical monetary policies.
February 1, 2010
The Global Integrated Monetary and Fiscal Model (GIMF) – Theoretical Structure
Description: This working paper presents a comprehensive overview of the theoretical structure of the Global Integrated Monetary and Fiscal Model (GIMF), a multi-region dynamic general equilibrium model that is used by the IMF for a variety of tasks including policy analysis, risk analysis, and surveillance.
February 1, 2010
Systemic Risks and the Macroeconomy
Description: This paper presents a modeling framework that delivers joint forecasts of indicators of systemic real risk and systemic financial risk, as well as stress-tests of these indicators as impulse responses to structural shocks identified by standard macroeconomic and banking theory. This framework is implemented using large sets of quarterly time series of indicators of financial and real activity for the G-7 economies for the 1980Q1-2009Q3 period. We obtain two main results. First, there is evidence of out-of sample forecasting power for tail risk realizations of real activity for several countries, suggesting the usefulness of the model as a risk monitoring tool. Second, in all countries aggregate demand shocks are the main drivers of the real cycle, and bank credit demand shocks are the main drivers of the bank lending cycle. These results challenge the common wisdom that constraints in the aggregate supply of credit have been a key driver of the sharp downturn in real activity experienced by the G-7 economies in 2008Q4- 2009Q1.