Andrea Gerali

Credit and Banking in a DSGE Model of the Euro Area

This paper studies the role of credit-supply factors in business cycle fluctuations. For this purpose, we introduce an imperfectly competitive banking sector into a DSGE model with financial frictions. Banks issue collateralized loans to both households and firms, obtain funding via deposits and accumulate capital from retained earnings. Margins charged on loans depend on bank capital-to-assets ratios and on the degree of interest rate stickiness. Bank balance-sheet constraints establish a link between the business cycle, which affects bank profits and thus capital, and the supply and cost of loans. The model is estimated with Bayesian techniques using data for the euro area. The analysis delivers the following results. First, the existence of a banking sector partially attenuates the effects of demand shocks, while it helps propagate supply shocks. Second, shocks originating in the banking sector explain the largest share of the fall of output in 2008 in the euro area, while macroeconomic shocks played a limited role. Third, an unexpected destruction of bank capital has a substantial impact on the real economy and particularly on investment.

Macroeconomic Effects of Greater Competition in the Service Sector: The Case of Italy

he paper assesses the effects of increasing competition in the service sector in Italy which, based on cross-country comparisons, is the OECD country with the highest markups in non-manufacturing industries. We propose a two-region (Italy and the rest of the euro area) dynamic general equilibrium model allowing for monopolistic competition in the labor, manufacturing and service markets. We then use the model to simulate the macroeconomic and spillover effects of increasing the degree of competition in the Italian services sector. Our results indicate that reducing the service sector markups to the levels of the rest of the euro area increases in the long run Italian GDP by 11 percent and welfare (measured in terms of steady state consumption equivalents) by about 3.5 percent. Half of the GDP increase would be realized in the first three years. The spillover effects to the rest of the euro area are limited.

Basel III: Long-Term Impact on Economic Performance and Fluctuations

We assess the long-term economic impact of the new regulatory standards (the Basel III reform), answering the following questions: 1) What is the impact of the reform on long-term economic performance? 2) What is the impact of the reform on economic fluctuations? 3) What is the impact of the adoption of countercyclical capital buffers on economic fluctuations? The main results are the following: 1) Each percentage point increase in the capital ratio causes a median 0.09 percent decline in the level of steady-state output, relative to the baseline. The impact of the new liquidity regulation is of a similar order of magnitude, at 0.08 percent. This paper does not estimate the benefits of the new regulation in terms of reduced frequency and severity of financial crisis, analyzed in Basel Committee on Banking Supervision (2010b). 2) The reform should dampen output volatility; the magnitude of the effect is heterogeneous across models; the median effect is modest. 3) The adoption of countercyclical capital buffers could have a more sizable dampening effect on output volatility.

The Macroeconomics of Fiscal Consolidations in a Monetary Union: The Case of Italy

We simulate the macroeconomic and welfare implications of different fiscal consolidation scenarios in Italy using a medium scale two-areas dynamic general equilibrium currency-union model. Differently from similar models, ours is rich in the terms of fiscal features. We assume distortionary taxes (on labor income, capital income and consumption) and welfare-enhancing public expenditure. We distinguish between public spending on final goods and services, public employment and transfers to households. The scenarios that we consider envisage a decreases in the public debt to GDP ratio of 10 percentage points in 5 years. Based on our simulations we find that: first, fiscal distortions are quantitatively significant; second, a consolidation strategy that reduces expenditure and simultaneously lowers tax rates has a positive effect on long-run GDP of 5% to 7% and on welfare of 4% to 7% of the initial levels, depending on the composition of the adjustment; third, consumption and investment are stable or grow on impact and along the path to the new steady state; finally, spillovers to the rest of the Euro area are expansionary and sizeable both in the long run and along the transition.

Real Exchange Rate Volatility and Disconnect: An Empirical Investigation

A two-country model that incorporates many features proposed in the New Open Economy Macroeconomics literature is developed in order to replicate the volatility of the real exchange rate and its disconnect with macroeconomic variables. The model is estimated using data for the euro area and the U.S. and Bayesian methods. The analysis delivers the following results: (a) international price discrimination, home bias and shocks to the uncovered interest rate parity (UIRP) condition are key features to replicate the variance of the real exchange rate; (b) home bias, shocks to the UIRP condition and to production technologies help replicating the disconnect;(c) distribution services intensive in local nontradeables are an important source of international price discrimination.

Structural reforms and zero lower bound in a monetary union

We assess the short- and medium-term macroeconomic effects of competition-friendly reforms in the service sector when the monetary policy rate is stuck at the zero lower bound (ZLB) in a monetary union. We calibrate a large-scale multi-country multi-sector dynamic general equilibrium model to one region within the euro area, the rest of the euro area and the rest of the world. We find first, that unilateral reforms by a single country do not affect the number of periods for which the ZLB holds and have mild medium-term expansionary effects on GDP. Second, reforms simultaneously implemented in the entire euro area can favor an earlier exit from the ZLB if they have sufficiently inflationary effects, which happens when the gradual increase in the supply of goods and services is matched by a sufficiently large increase in investment, associated with higher expected levels of output. Reforms have expansionary effects because of their positive wealth effect, which more than counterbalances the recessionary substitution effect associated with higher real interest rates. If investment cannot immediately react to the reforms, then the latter has a deflationary impact and the duration of the ZLB is not reduced.

Euro Area and Global Oil Shocks: An Empirical Model-Based Analysis

We assess the impact of oil shocks on euro-area macroeconomic variables by estimating a new-Keynesian small open economy model with Bayesian methods. Oil price is determined according to supply and demand conditions in the world oil market. We find that the impact of an increase in the price of oil depends upon the underlying sources of variation: when the driver of higher oil prices is an increase in the rest of the worlds aggregate demand, both euro-area GDP and CPI inflation increase, whereas negative oil supply shocks and positive worldwide oil-specific demand shocks have stagflationary effects on the euro-area economy. Moreover, the increase in oil prices during the 2004-2008 period did not induce stagflationary effects on the euro-area economy because it was associated with positive aggregate demand shocks in the rest of the world. Similarly, a drop in world aggregate demand helps to explain the recent (2008) simultaneous drop in oil prices, euro-area GDP and inflation - particularly its fuel component.

Macroeconomic Effects of Simultaneous Implementation of Reforms after the Crisis

This paper evaluates the macroeconomic effects of simultaneously implementing fiscal consolidation and competition-friendly reforms in a country of the euro area by simulating a large-scale dynamic general equilibrium model. We find, first, that the joint implementation of reforms has additional expansionary effects on long-run economic activity. Increasing competition in the service sector favors a higher income tax base. Given the targeted public debt-to-GDP ratio, labor and capital income tax rates can be reduced more than with fiscal consolidation alone. Second, fiscal consolidation has non-negligible medium-run costs; however, they are reduced by joint implementation with the services reform. The results are robust to alternative assumptions that capture the impact of financial crisis on the financing conditions of households.

Structural Reforms, Investment and Zero Lower Bound in a Monetary Union

We assess the effects of competition�?friendly reforms on the zero lower bound (ZLB) on the monetary policy rate in a monetary union, using a dynamic general equilibrium model calibrated to two regions within the euro area (EA) and the rest of the world. Reforms simultaneously implemented in the entire EA favor an earlier exit from the ZLB if they generate sufficient short�?run inflationary effects. This happens if capital accumulation increases, magnifying the expansionary effects of reforms on permanent income and, thus, short�?run aggregate demand. If investment does not increase, the effects are not sufficient to reduce the ZLB duration.

Banks’ Reactions to Basel-III

We use a dynamic general equilibrium model of the euro area to study banks’ possible responses to the stricter capital requirements called for by the Basel III reform package. We show that the effects on output depend, inter alia, on the strategy banks adopt in response to the reform, and that banks tend to prefer some strategies over others. Specifically, an increase in loan spreads minimizes banks’ costs and induces the sharpest contraction in real activity and investment, in the immediate as well as long term. A recapitalization, or restrictions on dividends, have more modest effects on output, but are less likely to be preferred by banks. We also find that the undesired macroeconomic effects of the reform during the transition phase are significantly mitigated if the reform is announced well ahead of its actual implementation – as was done for the Basel III package.