Sovereign debt crisis, fiscal consolidation, and active central bankers in a monetary union

This paper examines the impact of exogenous shocks on sovereign debts in an incomplete monetary union. We assume that financial stability is a public good that sovereign debt shocks can undermine in fragile (peripheral) members. Our model shows that, unlike the common misconception, active monetary policies do not induce the peripheral government to relax its fiscal constraints; on the contrary, these policies tend to incentivize fiscal discipline by reducing the cost of balance consolidation. Active monetary policies, in fact, partially reallocate the stabilization costs from the periphery to the core of the union, preserving the common good and facilitating fiscal discipline in the periphery.