The simple macroeconomics of North and South in EMU

The euro area today consists of a competitive, moderately leveraged North and an uncompetitive, over-indebted South. Its main macroeconomic challenge

Publishing date: 30 July 2012
Authors: Jean Pisani-Ferry Silvia Merler

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The euro area today consists of a competitive, moderately leveraged North and an uncompetitive, over-indebted South. Its main macroeconomic challenge is to carry out the adjustment required to restore the competitiveness of its southern part and eliminate its excessive public and private debt burden. This paper investigates the relationship between fiscal and competitiveness adjustment in a stylised model with two countries in a monetary union, North and South. To restore competitiveness, South implements a more restrictive fiscal policy than North.

We consider two scenarios. In the first, monetary policy aims at keeping inflation constant in the North. The South therefore needs to deflate to regain competitiveness, which worsens the debt dynamics. In the second, monetary policy aims at keeping inflation constant in the monetary union as a whole. This results in more monetary stimulus, inflation in the North is higher, and this in turn helps the debt dynamics in the South.

Our main findings are:

The differential fiscal stance between North and South is what determines real exchange rate changes. South therefore needs to tighten more. There is no escape from relative austerity.
If monetary policy aims at keeping inflation stable in the North and the initial debt is above a certain threshold, debt dynamics are perverse: fiscal retrenchment is self-defeating;
If monetary policy targets average inflation instead, which implies higher inflation in the North, the initial debt threshold above which the debt dynamics become perverse is higher. Accepting more inflation at home is therefore a way for the North to contribute to restoring debt sustainability in the South.
Structural reforms in the South improve the debt dynamics if the initial debt is not too high. Again, targeting average inflation rather than inflation in the North helps strengthen the favourable effects of structural reforms.

About the authors

Jean Pisani-Ferry

Jean Pisani-Ferry is a Senior Fellow at Bruegel, the European think tank, and a Non-Resident Senior Fellow at the Peterson Institute (Washington DC). He is also a professor of economics with Sciences Po (Paris).

He sits on the supervisory board of the French Caisse des Dépôts and serves as non-executive chair of I4CE, the French institute for climate economics.

Pisani-Ferry served from 2013 to 2016 as Commissioner-General of France Stratégie, the ideas lab of the French government. In 2017, he contributed to Emmanuel Macron’s presidential bid as the Director of programme and ideas of his campaign. He was from 2005 to 2013 the Founding Director of Bruegel, the Brussels-based economic think tank that he had contributed to create. Beforehand, he was Executive President of the French PM’s Council of Economic Analysis (2001-2002), Senior Economic Adviser to the French Minister of Finance (1997-2000), and Director of CEPII, the French institute for international economics (1992-1997).

Pisani-Ferry has taught at University Paris-Dauphine, École Polytechnique, École Centrale and the Free University of Brussels. His publications include numerous books and articles on economic policy and European policy issues. He has also been an active contributor to public debates with regular columns in Le Monde and for Project Syndicate.
Silvia Merler

Silvia Merler, an Italian citizen, is the Head of ESG and Policy Research at Algebris Investments.

She joined Bruegel as Affiliate fellow at Bruegel in August 2013. Her main research interests include international macro and financial economics, central banking and EU institutions and policy making.

Before joining Bruegel, she worked as Economic Analyst in DG Economic and Financial Affairs of the European Commission (ECFIN). There she focused on macro-financial stability as well as financial assistance and stability mechanisms, in particular on the European Stability Mechanism (ESM), providing supportive analysis for the policy negotiations.