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This article reexamines the problem of monetary policy stress in the EMU. In addition to estimating the amount of stress in particular countries, we investigate its sources by breaking it down into its “fundamental” parts, covering how it is a result of country-specific macroeconomic divergences and the EMU-wide “non-fundamental” component, with special attention given to the role of missed forecasts. Our results confirm that peripheral countries were exposed to risks emerging from low interest rates while the “core” countries did not suffer from much monetary policy stress. Interestingly, the bulk of it was non-fundamental, i.e., not caused by inflation and output gap differentials between countries. We show that missed forecasts did make an important contribution to this part of the stress and were mainly responsible for pushing the interest rate below its rule-consistent level
