This paper considers the impact of macroeconomic fluctuations on the optimal level of public debt. Households are subject to both aggregate and idiosyncratic risk and insurance market imperfectness prevents them from from fully insuring against risk. We find that the optimal level of public debt...

Would the U.S. economy's dynamic response to permanent technology shocks have been different from the actual responses if monetary authorities' systematic response to these shocks had been optimal ? To answer this question, we characterize the dynamic effects of permanent technology shocks and...

The 2007-2009 financial crisis was caused by financial markets’ greed and instability and led to a strong rise public debts and deficits in advanced economies. Financial markets and international institutions advocate a “fiscal exit strategy” through rapid cuts in public deficits and debts...

Dans les débats sur la zone Euro et son élargissement, l’accent est souvent mis sur le problème de l’hétérogénéité entre les pays. Mais les difcultés à se coordonner ne provi- ennent pas nécessairement de la disparité entre les pays, tout au moins si le nombre de pays est...

Cet article part de l'idée que la souveraineté monétaire et la souveraineté politique ne doivent pas être confondues, mais que, pour autant, les principes d'organisation de la monnaie n’en doivent pas moins être cohérents avec ceux qui fondent la communauté politique. Ainsi,...

Using a four-country Mundell–Fleming model including portfolio and wealth effects, we explore the question whether some types of policy coordination could improve the outcomes of a financial shock like the Asian crisis. Time-consistent equilibria are computed : a Nash equilibrium, a target...

When countries decide to coordinate and form a coalition, an outsider country can take advantage of the situation and gain more than an insider, hence creating a free-rider problem that could threaten the stability of the coalition. But as far as the Euro zone is concerned, the emphasis put on...

We extend the model of Leith and Wren-Lewis (2000) to the case of a monetary union. Within a two-country dynamic model with wealth private behaviours, we study the implications of stabilising public debt on monetary and fiscal policies. The model is a macroeconomic version of the Fiscal Theory...