Auray, Eyquem & Ma: Banks, Sovereign Risk and Unconventional Monetary Policies


We develop a two-country model with an explicitly microfounded interbank market and sovereign default risk. Calibrated to the Euro Area, the model performs satisfactorily in matching key business cycle facts on real, financial and fiscal time series. We then use the model to assess the effects of a large crisis and quantify the potential effects of alternative unconventional policies on the dynamics of GDP, sovereign default risk and public indebtedness. We show that quantitative monetary easing is more efficient in stimulating GDP, while qualitative monetary easing relieves financial tensions and sovereign risk more efficiently. In terms of welfare, in the short run, unconventional monetary policies bring sizable welfare gains for households, while the long term effects are much smaller.

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