How does monetary policy affect the exchange rate? This question is important to central banks because the exchange rate has an indirect impact on inflation. It has therefore been looked at extensively in the economic literature. Even so, there is no consensus on how monetary policy impulses take effect over time and on their overall importance for exchange rate developments. A recent study delivers new insights: monetary policy impulses take full effect with no time lag and could play a greater role for exchange rate developments than previously thought.

The outcome of the Brexit referendum in June 2016 brought about an abrupt increase in political and economic uncertainty. In a new study, we show that German banks reduced lending to firms in the United Kingdom (UK) following the referendum. These firms reduced employment and investment as a result of the credit supply shock. Multinational corporations in the UK were able to mitigate this decline in external financing by making greater use of internal capital markets operated within their international corporate structures. Our study shows that the outcome of the Brexit referendum put pressure on the UK economy via indirect channels as well. Moreover, it highlights the role of multinational corporations, which were better able to mitigate the impact.

Central banks have used communication about the inflation outlook as an additional policy tool in response to the post-pandemic inflation surge. We present novel survey evidence that the ECB’s guidance about its projected inflation path can substantially lower households’ inflation expectations when kept in a sophisticatedly simple (KISS) way.

In recent years, geopolitical risks have risen in many places. This not only has a direct impact on the countries affected, but also on international trade. In a new study, we show that rising geopolitical risks in trade partner countries dampen imports of goods, make them more expensive and impair supply chains. In addition, they are likely to be conducive to a fragmentation of global trade. Risks associated with China are particularly significant in this context.

The advantages or disadvantages firms experience as a result of their size, referred to in the economic literature as returns to scale, are of central importance in many economic models. Increasing returns to scale, whereby unit costs decrease as output volume increases, could explain productivity differences between Europe and the United States. We present fresh evidence on the returns to scale of European firms: most exhibit constant returns to scale, but a non-trivial share also show increasing returns to scale.

A substantial share of bank loans of euro area banks is secured with real estate. In a new study, we examine whether, in the low interest rate environment, banks invested more in foreign real estate-backed lending. Our results suggest that regulatory differences between the bank’s home country and possible destination countries matter for banks’ search for yield.

Russia’s invasion of Ukraine triggered an energy crisis in 2022 that posed major challenges to the German economy and sparked broad debate on the economic ramifications of the marked rise in natural gas prices. In a new study, we examine the causes and consequences of this crisis and show how supply shocks and a surge in demand for natural gas storage impacted on natural gas prices and industrial production in Germany.

Financial repression is intended to help the government deleverage over time, for example following crises, by artificially lowering the yield on government bonds. However, its impact on the deb-to-GDP ratio also depends on how it affects the economy as a whole, as financial repression also influences private investment and saving decisions. In view of these macroeconomic interrelationships, financial repression can lead to a net rise in the government debt-to-GDP ratio. A new study suggests that this is what happened in the United States following the Second World War.

Global systemically important banks (G-SIBs) have to comply with additional buffer requirements owing to their size and interconnectedness within the banking sector. The buffer level banks are expected to meet depends on their exposures at a certain point in time. A new study shows that G-SIBs reduce their exposures more strongly – twice as strongly, in fact – than other banks at period-end reporting dates. As a result, the buffer level may be too low to cover the additional risk associated with G-SIBs.

Transition risk is the risk arising from the economy’s shift towards net-zero carbon emissions. Applying a novel methodology, we find that large unanticipated increases to transition risk are predominantly related to political events and can have notable macroeconomic consequences. Interestingly, in the short run these shocks do not uniformly generate inflationary pressure, challenging the prevalent notion of “greenflation.” Finally, our results highlight an important role for country-specificities, suggesting, for instance, that there may also be economic benefits attached to the transition. Overall, while international policy coordination is essential, these findings underscore the importance of tailoring policy interventions to each nation's unique economic context.