Im zweiten Halbjahr 2018 ist der Aufschwung der deutschen Wirtschaft ins Stocken geraten. Dabei geht der leichte Rückgang des Bruttoinlandsprodukts im dritten Quartal vor allem auf Probleme der Automobilbranche zurück: Viele Fahrzeugtypen waren nicht lieferbar, weil die Zertifizierung nach dem neuen Abgas-Prüfverfahren fehlte. Allerdings schwächt sich das Auslandsgeschäft schon seit Beginn des Jahres ab, denn die internationale Konjunktur hat den hohen Schwung des Jahres 2017 nicht halten können, vor allem wegen der hohen politischen Unsicherheiten, welche die Handelskonflikte, der nahende Brexit und der Konflikt um den italienischen Staatshaushalt mit sich bringen.

Binnenwirtschaftlich dürfte sich aber der Aufschwung in Deutschland im Lauf des Jahres kaum verlangsamt haben. Ein Hauptgrund dafür sind die weiter sehr günstigen Finanzierungsbedingungen. Sie werden aufgrund der expansiven Geldpolitik der EZB auch im Jahr 2019 günstig bleiben. Allerdings ist zu erwarten, dass das weniger freundliche außenwirtschaftliche Umfeld nicht nur die Exporte dämpft, sondern bald auch auf Investitionsentscheidungen und Personalpolitik der Unternehmen durchschlagen wird; zunächst wohl im Verarbeitenden Gewerbe, dann auch bei den Dienstleistern. Weiter bremsend wirkt zugleich der Fachkräftemangel am Bau, aber auch in anderen Branchen. Alles in allem ist damit zu rechnen, dass die Produktion im Jahr 2019 nur noch in etwa so stark zulegt wie die Produktionskapazitäten: Das Bruttoinlandsprodukt dürfte im Jahr 2018 um 1,5% und im Jahr 2019 um 1,4% steigen. Der gesamtstaatliche Haushaltsüberschuss beträgt im Jahr 2018 60 Mrd. Euro. Im Jahr 2019 verringert er sich auf 42 Mrd. Euro. Die ostdeutsche Wirtschaft dürfte in den Jahren 2018 und 2019 in etwa so schnell expandieren wie die gesamtdeutsche.

We calculate the magnitude of the government consumption multiplier in linearized and nonlinear solutions of a New Keynesian model at the zero lower bound. Importantly, the model is amended with real rigidities to simultaneously account for the macroeconomic evidence of a low Phillips curve slope and the microeconomic evidence of frequent price changes. We show that the nonlinear solution is associated with a much smaller multiplier than the linearized solution in long‐lived liquidity traps, and pin down the key features in the model which account for the difference. Our results caution against the common practice of using linearized models to calculate fiscal multipliers in long‐lived liquidity traps.

We analyze the effect of monetary policy transparency on bilateral exchange rate volatility. We test the theoretical predictions of a stylized model using panel data for 62 currencies from 1998 to 2010. We find strong evidence that an increase in the availability of information about monetary policy objectives decreases exchange rate volatility. Using interaction models, we find that this effect is more pronounced for countries with a lower flexibility of goods prices, a lower level of central bank conservatism, and a higher interest rate sensitivity of money demand.

Point estimates and error bands for SVARs that are set identified are only justified if the researcher is persuaded that some parameter values are a priori more plausible than others. When such prior information exists, traditional approaches can be generalized to allow for doubts about the identifying assumptions. We use information about both structural coefficients and impacts of shocks and propose a new asymmetric t-distribution for incorporating information about signs in a nondogmatic way. We apply these methods to a three-variable macroeconomic model and conclude that monetary policy shocks are not the major driver of output, inflation, or interest rates.

Financial markets are eager for any signal of monetary policy from the People’s Bank of China (PBC). The importance of effective monetary policy communication will only increase as China continues to liberalize its financial system and open its economy. This paper discusses the country’s unique institutional setup and empirically analyzes the impact on financial markets of the PBC’s main communication channels, including a novel communication channel. The results suggest that there has been significant progress but that PBC communication is still evolving toward the level of other major economies. The paper recommends medium-term policy reforms and reforms that can be adopted quickly.

Since the global financial crisis, monetary economics new questions include the explanation and response to unusual consumer price developments but also the interdependencies between financial markets and real economic activity and its implication for the monetary policy transmission mechanism. This dissertation investigates these questions by presenting empirical evidence that accounts for non-linearities of the relevant economic relations. The first and second chapters examine inflation dynamics of the Euro area and ASEAN-5 economies using non-linear Phillips curve models. The results suggest that changes in inflation processes are mainly driven by the development of long-term inflation expectations. The third chapter investigates the evolution of the financial accelerator (FA) taking into account the developments of the financial sector. The results of a time-varying structural vector autoregressive model indicate that the FA effect for the USA has increased from the early 1990s.

Since the global financial crisis, economic literature has highlighted banks’ inclination to bolster up their liquid asset positions once the aggregate interbank funding market experiences a dry-up. To this regard, we show that liquidity hoarding and its detrimental effects on credit can also be triggered by idiosyncratic, i.e. bankspecific, interbank funding shocks with implications for monetary policy. Combining a unique data set of the Brazilian banking sector with a novel identification strategy enables us to overcome previous limitations for studying this phenomenon as a bankspecific event. This strategy further helps us to analyse how disruptions in the bank headquarters’ interbank market can lead to liquidity and lending adjustments at the regional bank branch level. From the perspective of the policy maker, understanding this market-to-market spillover effect is important as local bank branch markets are characterised by market concentration and relationship lending.

The adverse macroeconomic consequences of the Great Recession in 2009 spread well beyond the United States, highlighting the importance of financial stability and the housing market for real economic activity. Moreover, the vicious bank-sovereign cycle and the resulting sovereign-debt crisis of 2010-2012 posed a big threat to the survival of the Economic and Monetary Union (EMU) as a whole. While there is widespread consensus about the underlying causes of these crises, policy makers are still debating about what can be done to prevent future crises and, especially in the Euro area, deeply disagree on the direction of reforms. After all, most regulatory measures face not only the trade-off between financial resilience versus efficiency but also the fundamental choice between rule or discretion based interventions (Bénassy-Quéré et al., 2018).

Die internationale Konjunktur ist seit Herbst 2016 kräftig, und auch im Jahr 2018 dürfte die Weltwirtschaft deutlich expandieren, nach vorliegender Prognose um 3,3%. Die deutsche Wirtschaft ist derzeit in einer Hochkonjunktur. Allerdings ist zweifelhaft, ob die deutsche Wirtschaft über die Kapazitäten verfügt, um das Tempo des Aufschwungs noch lange durchzuhalten. Das Bruttoinlandsprodukt in Deutschland dürfte im Jahr 2018 mit 2,2% noch einmal recht kräftig und im Jahr 2019 mit 1,6% deutlich moderater expandieren. Der Zuwachs der Produktion in Ostdeutschland dürfte im Jahr 2018 mit 2,0% etwas unter dem in Westdeutschland liegen.

In this paper, we investigate to what extent sovereign stress and banking stress have contributed to the increase in the level and in the heterogeneity of nonfinancial firms’ refinancing costs in the Euro area during the European debt crisis and how they did affect the monetary transmission mechanism. We identify the increasing effect of government bond yield spreads (sovereign stress) and the share of non-performing loans (banking stress) on firms’ financing costs using an instrumental-variable approach. Moreover, we estimate both sources of stress to have significantly impaired the monetary transmission mechanism during the European debt crisis.