The recent fears of a sovereign debt crisis have spurred interest in the sustainability of public debt. There are two different approaches to the assessment of sustainability: the use of sustainability gap indicators (Blanchard et al., 1990) and the time series approach (Trehan and Walsh, 1988)....

We welfare rank various tax-spending policies. The setup is a New Keynesian model of a semi-small open economy featuring sovereign risk premia and loss of monetary policy independence. The model is calibrated to match data from the Italian economy 2001-2011. We compute various optimized...

This paper studies the impact of the state-dependent risk of a government default on the correlation of the scal balance and current account. We use a small open economy model where nonlinear risk premia arise endogenously when the government operates close to its scal limit, i.e. the maximum...

We build a new Keynesian DSGE model consisting of two heterogeneous countries participating in a monetary union. We study how public debt consolidation in a country with high debt (like Italy) affects welfare in a country with solid public finances (like Germany). Our results show that debt...

We show that the correct experiment to evaluate the effects of a fiscal adjustment is the simulation of a multi year fiscal plan rather than of individual fiscal shocks. Simulation of fiscal plans adopted by 16 OECD countries over a 30-year period supports the hypothesis that the effects of...

The recent relatively high levels of global oil prices have led to a significant improvement in the public finances of several hydrocarbon-exporting countries. However, despite the increase in fiscal buffers, medium-term risks remain high. Fiscal vulnerabilities have increased as a consequence...

The recent relatively high levels of global oil prices have led to a significant improvement in the public finances of several hydrocarbon-exporting countries. However, despite the increase in fiscal buffers, medium-term risks remain high. Fiscal vulnerabilities have increased as a consequence...

We welfare rank various tax-spending policies. The setup is a New Keynesian model of a semi-small open economy featuring sovereign risk premia and loss of monetary policy independence. The model is calibrated to match data from the Italian economy 2001-2011. We compute various optimized...

The paper is organized around the following question: when the economy moves from a debtGDP level where the probability of default is nil to a higher level the "fiscal limit" where the default probability is non-negligible, how do the effects of routine monetary operations designed to achieve...

The U.S. faces exponentially rising entitlement obligations. I introduce a fiscal limit -- a point where higher taxes are no longer a feasible financing mechanism -- into a Perpetual Youth model to examine how intergenerational redistributions of wealth, the average duration of government debt,...