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Stéphane Dupraz
- 2 November 2026
- RESEARCH BULLETIN - No. 148Details
- Abstract
- High public debt around the globe has revived concerns that it could impede central banks’ ability to control inflation. This article explains how public debt affects the work of central banks. They can still control inflation, but they must take public debt into account when setting rates, because debt affects the level of interest rates consistent with price stability.
- JEL Code
- E31 : Macroeconomics and Monetary Economics→Prices, Business Fluctuations, and Cycles→Price Level, Inflation, Deflation
E62 : Macroeconomics and Monetary Economics→Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook→Fiscal Policy
- 6 November 2025
- OCCASIONAL PAPER SERIES - No. 377Details
- Abstract
- This paper serves as a reference guide on the effects of “standard” monetary policy shocks on output and prices, based on harmonised simulation exercises conducted across models of the European System of Central Banks (ESCB), meta-analysis of existing empirical literature for the euro area, and selected works on heterogeneity and non-linearities in the monetary transmission mechanism as captured by empirical models. Our analysis starts by comparing the effects of monetary policy shocks as estimated by structural, semi-structural and dynamic stochastic general equilibrium (DSGE) models, and identifying the main sources of heterogeneity – most notably via the specification of monetary policy rules, the slope of the Phillips curve, the role of real rigidities and financial frictions, and the expectations formation mechanism. While DSGE models tend to produce sharper responses, semi-structural models often reveal more gradual and persistent effects, in line with backward-looking empirical models. The second chapter presents a meta-analysis of estimated effects based on the empirical literature, which are broadly consistent with the results obtained from the ESCB models, although differences might appear when correcting for publication bias, or accounting for different identification frameworks. The study is then complemented by selected works on heterogeneity and non-linearities in the monetary transmission mechanism as captured by empirical models. Our analysis in the final chapter shows that monetary policy transmission is heterogeneous across countries, sectors, demand components, and time. It also reveals important non-linear and state-dependent dynamics: in high-inflation periods, greater price and wage flexibility amplifies the response of inflation while dampening output effects, thereby lowering the sacrifice ratio. [...]
- JEL Code
- C22 : Mathematical and Quantitative Methods→Single Equation Models, Single Variables→Time-Series Models, Dynamic Quantile Regressions, Dynamic Treatment Effect Models &bull Diffusion Processes
C52 : Mathematical and Quantitative Methods→Econometric Modeling→Model Evaluation, Validation, and Selection
D58 : Microeconomics→General Equilibrium and Disequilibrium→Computable and Other Applied General Equilibrium Models
E31 : Macroeconomics and Monetary Economics→Prices, Business Fluctuations, and Cycles→Price Level, Inflation, Deflation
E52 : Macroeconomics and Monetary Economics→Monetary Policy, Central Banking, and the Supply of Money and Credit→Monetary Policy
E58 : Macroeconomics and Monetary Economics→Monetary Policy, Central Banking, and the Supply of Money and Credit→Central Banks and Their Policies
F45 : International Economics→Macroeconomic Aspects of International Trade and Finance
- 30 June 2025
- OCCASIONAL PAPER SERIES - No. 372Details
- Abstract
- This report focuses on the implications of the changed inflation environment for the ECB’s monetary policy strategy, including the lessons learned from both the low inflation and high inflation periods, and the transition from one to the other. The starting point of the report is the outcome of the Monetary Policy Strategy Review 2020-21. While the previous review was conducted in an economic environment of low inflation, with interest rates in proximity to the effective lower bound (ELB), the inflation surge that followed the COVID-19 pandemic underscores the importance of a monetary policy strategy that enables the Governing Council to effectively respond to major changes in the inflation environment.
- 17 March 2025
- WORKING PAPER SERIES - No. 3038Details
- Abstract
- Can monetary policy deliver price stability whatever fiscal policy does? With Ricardian households, no: Public debt must be backed by future fiscal surpluses. But if that fiscal backing holds, monetary policy can deliver price stability by responding sufficiently strongly to inflation. We reconsider the question when households are not Ricardian. First, although public debt need not always be backed by future surpluses, fiscal requirements still exist in a different form: Public debt cannot be so high that its wealth effect on aggregate spending prevents the existence of a natural interest rate. Second, if this condition is satisfied, monetary policy can deliver price stability, but it must respond directly to the level of public debt—not just to the inflation that higher debt creates.
- JEL Code
- E31 : Macroeconomics and Monetary Economics→Prices, Business Fluctuations, and Cycles→Price Level, Inflation, Deflation
E62 : Macroeconomics and Monetary Economics→Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook→Fiscal Policy
- 21 September 2021
- OCCASIONAL PAPER SERIES - No. 275Details
- Abstract
- This report discusses the role of the European Union’s full employment objective in the conduct of the ECB’s monetary policy. It first reviews a range of indicators of full employment, highlights the heterogeneity of labour market outcomes within different groups in the population and across countries, and documents the flatness of the Phillips curve in the euro area. In this context, it is stressed that labour market structures and trend labour market outcomes are primarily determined by national economic policies. The report then recalls that, in many circumstances, inflation and employment move together and pursuing price stability is conducive to supporting employment. However, in response to economic shocks that give rise to a temporary trade-off between employment and inflation stabilisation, the ECB’s medium-term orientation in pursuing price stability is shown to provide flexibility to contribute to the achievement of the EU’s full employment objective. Regarding the conduct of monetary policy in a low interest rate environment, model-based simulations suggest that history-dependent policy approaches − which have been proposed to overcome lasting shortfalls of inflation due to the effective lower bound on nominal interest rates by a more persistent policy response to disinflationary shocks − can help to bring employment closer to full employment, even though their effectiveness depends on the strength of the postulated expectations channels. Finally, the importance of employment income and wealth inequality in the transmission of monetary policy strengthens the case for more persistent or forceful easing policies (in pursuit of price stability) when interest rates are constrained by their lower bound.
- JEL Code
- E52 : Macroeconomics and Monetary Economics→Monetary Policy, Central Banking, and the Supply of Money and Credit→Monetary Policy
E24 : Macroeconomics and Monetary Economics→Consumption, Saving, Production, Investment, Labor Markets, and Informal Economy→Employment, Unemployment, Wages, Intergenerational Income Distribution, Aggregate Human Capital
- 21 September 2021
- OCCASIONAL PAPER SERIES - No. 269Details
- Abstract
- The ECB’s price stability mandate has been defined by the Treaty. But the Treaty has not spelled out what price stability precisely means. To make the mandate operational, the Governing Council has provided a quantitative definition in 1998 and a clarification in 2003. The landscape has changed notably compared to the time the strategy review was originally designed. At the time, the main concern of the Governing Council was to anchor inflation at low levels in face of the inflationary history of the previous decades. Over the last decade economic conditions have changed dramatically: the persistent low-inflation environment has created the concrete risk of de-anchoring of longer-term inflation expectations. Addressing low inflation is different from addressing high inflation. The ability of the ECB (and central banks globally) to provide the necessary accommodation to maintain price stability has been tested by the lower bound on nominal interest rates in the context of the secular decline in the equilibrium real interest rate. Against this backdrop, this report analyses: the ECB’s performance as measured against its formulation of price stability; whether it is possible to identify a preferred level of steady-state inflation on the basis of optimality considerations; advantages and disadvantages of formulating the objective in terms of a focal point or a range, or having both; whether the medium-term orientation of the ECB’s policy can serve as a mechanism to cater for other considerations; how to strengthen, in the presence of the lower bound, the ECB’s leverage on private-sector expectations for inflation and the ECB’s future policy actions so that expectations can act as ‘automatic stabilisers’ and work alongside the central bank.
- JEL Code
- E31 : Macroeconomics and Monetary Economics→Prices, Business Fluctuations, and Cycles→Price Level, Inflation, Deflation
E52 : Macroeconomics and Monetary Economics→Monetary Policy, Central Banking, and the Supply of Money and Credit→Monetary Policy
E58 : Macroeconomics and Monetary Economics→Monetary Policy, Central Banking, and the Supply of Money and Credit→Central Banks and Their Policies
- 21 September 2021
- OCCASIONAL PAPER SERIES - No. 267Details
- Abstract
- This paper provides an assessment of the macroeconomic models regularly used for forecasting and policy analysis in the Eurosystem. These include semi-structural, structural and time-series models covering specific jurisdictions and the euro area within a closed economy, small open economy, multi-country or global setting. Models are used as analytical frameworks for building baseline projections and for supporting the preparation of monetary policy decisions. The paper delivers four main contributions. First, it provides a survey of the macroeconomic modelling portfolios currently used or under development within the Eurosystem. Second, it explores the analytical gaps in the Eurosystem models and investigates the scope for further enhancement of the main projection and policy models, and the creation of new models. Third, it reviews current practices in model-based analysis for monetary policy preparation and forecasting and provides recommendations and suggestions for improvement. Finally, it reviews existing cooperation modalities on model development and proposes alternative sourcing and organisational strategies to remedy any knowledge or analytical gaps identified.
- JEL Code
- C5 : Mathematical and Quantitative Methods→Econometric Modeling
E47 : Macroeconomics and Monetary Economics→Money and Interest Rates→Forecasting and Simulation: Models and Applications
E52 : Macroeconomics and Monetary Economics→Monetary Policy, Central Banking, and the Supply of Money and Credit→Monetary Policy
E58 : Macroeconomics and Monetary Economics→Monetary Policy, Central Banking, and the Supply of Money and Credit→Central Banks and Their Policies
F4 : International Economics→Macroeconomic Aspects of International Trade and Finance