Using a wide range of models we document a protracted fall in the natural (or neutral) rate of interest in advanced economies, driven by ageing, waning productivity growth, a rise in mark-ups, and a surge in risk aversion in the wake of the global financial crisis. While our neutral rate estimates are highly uncertain and model dependent, most of them have been negative in the wake of the financial crisis. This observation is highly relevant for assessing the monetary policy stance and the risk of monetary policy becoming constrained by the lower bound on nominal interest rates. We highlight model dependence of natural rate estimates by illustrating large differences in their stabilising properties, depending on the context chosen. We also emphasise high statistical uncertainty of natural rate estimates within models. Looking ahead, a return to higher levels would have to come from a reversal in risk aversion and flight to safety and a boost in productivity. To achieve this, structural reforms are crucial.

Boom‐bust cycles in the eurozone periphery almost toppled the single currency and recent experience suggests that they may return soon. We check whether monetary or macroprudential policy could have prevented the periphery's violent boom and bust after the euro adoption. We estimate a DSGE model for the two euro area regions, core and periphery, and conduct a series of historical counterfactual experiments in which monetary and macroprudential policy follow optimized rules that use area‐wide welfare as the criterion. We show that single monetary policy could have better stabilized output in both regions, but not the housing market or the periphery's trade balance. In contrast, region‐specific macroprudential policy could have substantially smoothed the credit cycle in the periphery and reduced the build‐up of external imbalances.

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We use a New Keynesian DSGE model with search frictions on the housing market to evaluate how financing a labor tax reduction by higher property taxation affects the real economy and welfare. Search on the housing market enables us to explicitly model stocks and flows, which is necessary to differentiate between recurrent property taxes (levied on stocks) and property transaction taxes (levied to flows). We find that using recurrent property taxation as financing instrument outperforms other instruments although all policy measures increase aggregate economy-wide welfare. Our simulations suggest that using property transaction taxation as financing instrument is the least favorable measure.