Does a Currency Union Need a Capital Market Union? Risk Sharing Via Banks and Markets
42 Pages Posted: 1 Jul 2019 Last revised: 13 Aug 2021
Date Written: June 2019
We compare risk sharing in response to demand and supply shocks in four types of currency unions: segmented markets; a banking union; a capital market union; and complete financial markets. We show that a banking union is efficient at sharing all domestic demand shocks (deleveraging, fiscal consolidation), while a capital market union is necessary to share supply shocks (productivity and quality shocks). Using a calibrated model we provide evidence of substantial welfare gains from a banking union and, in the presence of supply shocks, from a capital market union.
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