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This paper studies the issue of equilibrium determinacy under monetary and fiscal policy feedback rules in an optimizing general equilibrium model with overlapping generations and flexible prices. It is shown that equilibria may be determinate also when monetary and fiscal policies are both 'passive'. In particular, under passive monetary rules, equilibrium uniqueness is more likely to be verified when fiscal policies are less committed to public debt stabilization.

Are Italy's primary-surplus policies compatible with the sustainability of government debt? We address the question by examining historical budget data in post-unification Italy, over the 150 years from 1862 to 2012. Controlling for temporary output, temporary spending and world war-time periods in assessing whether primary surpluses significantly reacted to changes in debt, we find the following results: (i) the hypothesis of nonlinearity in the surplus-debt relationship significantly outperforms the hypothesis of linearity; (ii) there exists a threshold level in the debt-GDP ratio, approximately equal to 111%, above which Italian fiscal policy makers are concerned with corrective actions to avoid insolvency; (iii) the robustly positive reaction of primary surpluses to debt beyond the trigger point ensures fiscal sustainability.

Are Italy's primary-surplus policies compatible with the sustainability of government debt? We address the question by examining historical budget data in post-unification Italy, over the 150 years from 1862 to 2012. Controlling for temporary output, temporary spending and world war-time periods in assessing whether primary surpluses significantly reacted to changes in debt, we find the following results: (i) the hypothesis of nonlinearity in the surplus-debt relationship significantly outperforms the hypothesis of linearity; (ii) there exists a threshold level in the debt-GDP ratio, approximately equal to 111%, above which Italian fiscal policy makers are concerned with corrective actions to avoid insolvency; (iii) the robustly positive reaction of primary surpluses to debt beyond the trigger point ensures fiscal sustainability.

AbstractStandard New Keynesian models for monetary policy analysis are 'cashless'. When the nominal interest rate is the central bank's operating instrument, the LM equation is endogenous and, it is argued, can be ignored. The modern theoretical and quantitative debate on the importance of money for monetary policy conduct, however, overlooks firms' money demand. Working in an otherwise canonical New Keynesian setup, we show that macroeconomic dynamics are critically affected by the firms' money demand choice. Under the conventional Taylor‐rule framework, we prove that equilibrium determinacy may require either an active interest rate policy, overreacting to inflation, or a passive interest rate policy, underreacting to inflation, depending on the elasticity of production with respect to cash balances. We then develop a numerical analysis to evaluate our theoretical results. We find that macroeconomic stability is more likely to occur under an active, but not overly aggressive, monetary policy stance. We also examine the dynamic effects of forward‐looking feedback rules. We show that, in this policy regime, indeterminacy is likely to be induced by both active and passive rules, even for relatively low productivity effects of money.

The adoption of a Taylor‐type monetary policy rule and an inflation target for emerging market economies that choose a flexible exchange rate regime is often advocated. This paper investigates the issue of exchange rate determination when interest‐rate feedback rules are implemented in a continuous‐time optimizing model of a small open economy facing an imperfect global capital market. It is demonstrated that when a risk premium on external debt affects the monetary policy transmission mechanism, the Taylor principle is not a necessary condition for determinacy of equilibrium. On the other hand, it is shown that exchange rate dynamics critically depend on whether monetary policy is active or passive. In terms of optimal monetary policy, it is demonstrated that the degree of responsiveness of the nominal interest rate to inflation should be related to the stock of foreign debt. Specifically, it is optimal to implement a more passive monetary policy stance in response to larger levels of the outstanding foreign‐currency‐denominated debt.

This paper presents an indirect approach to investigate the possible existence of measurement error bias in the Harmonized Index of Consumer Prices for the UK and Italy. Our empirical results show that there is no significant evidence of a bias for the UK, nor for Italy prior to the introduction of the Euro. Since January 2002, however, the inflation rate in Italy has been underestimated by at least 6 percentage points.

This paper develops a dynamic stochastic general equilibrium model with nominal rigidities, capital accumulation and finite lifetimes. The framework exhibits intergenerational wealth effects and is intended to investigate the macroeconomic implications of fiscal policy, which is specified by either a debt-based tax rule or a balanced-budget rule allowing for temporary deficits. When calibrated to euro area quarterly data, the model predicts that fiscal expansions generate a tradeoff in output dynamics between short-term gains and medium-term losses. It is also shown that the effects of fiscal shocks crucially depend upon the conduct of monetary policy. Simulation analysis suggests that balanced-budget requirements enhance the determinacy properties of feedback interest rate rules by guaranteeing inflation stabilization.