Research Brief
This publication by the Bundesbank Research Centre provides regular news about recent studies and discussion papers by Bundesbank research economists.
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Rent or buy? How equity requirements for households influence decisions on home financing Research Brief | 60th edition – August 2023
Some households contribute only a small amount of equity when buying property financed by a loan. If they then default on the loan, lenders may incur losses. Should the problem affect a large number of lenders, this could potentially jeopardise financial stability. Minimum requirements for the own funds households need to provide can limit losses that may arise. However, this would mean that some households can no longer obtain loans in the desired amount. A Bundesbank study shows that a large proportion of the households interested in buying which would be affected by this are then willing to buy a cheaper property or to save more in order to buy at a later date. The impact on homeownership is therefore likely to be smaller in the medium than in the short term.
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Banks’ internal credit risk models: incentives for implementation and impact on risk management Research Brief | 59th edition – July 2023
Internal risk models play an important role in ensuring capital adequacy at banks. Banking supervisors keep a particularly close eye on them, as banks have some degrees of freedom when it comes to model design. A new study examines the incentives for banks to implement internal risk models, analyses their impact on risk management and explains possible consequences of a new regulatory proposal regarding application of such models.
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How the US dollar, as a reserve currency, restricts US trade policy Research Brief | 58th edition – May 2023
The trade dispute between the United States and China in 2018 and 2019 increased trade policy uncertainty, leading to a marked appreciation of the US dollar (USD). The obvious explanation for this is the special role played by USD investments in the global financial system as a safe haven for investors in times of high uncertainty. The USD appreciation triggered in this way in 2018 and 2019 enabled Chinese exporters to lower their prices in US dollars. As a result, the impact of the additional import tariffs imposed at the time by the United States on Chinese products was significantly reduced.
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The effectiveness of green collateral policy as an instrument of climate policy Research Brief | 57th edition – April 2023
The debate surrounding climate change mitigation measures has lately also extended to central bank instruments. One of the points under discussion is the preferential treatment of green bonds in central bank monetary policy operations. This would improve the financing conditions of firms with low emissions and thus create an incentive for green investment. Using a novel model, we analyse the climate policy and macroeconomic implications of a green-tilted collateral policy and are able to identify only minor effects on green investment.
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Negative interest rate policy led to negative interest rates on corporate deposits and higher fees Research Brief | 56th edition – March 2023
The Eurosystem’s negative interest rate policy (NIRP) incentivised banks to also charge their customers negative deposit rates. My analysis shows that German banks did actually charge negative interest rates on corporate deposits at times. However, the banks that did so were primarily those which relied heavily on household deposits as a source of funding. These banks were very reluctant to apply negative interest rates to household deposits as well, and thus probably faced particularly high margin pressure. It was primarily these banks that also charged higher fees in order to ease this pressure.
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Lower TARGET2 payment flows due to EU sanctions against Russia Research Brief | 55th edition – February 2023
In recent years, the European Union has imposed various types of financial sanctions against Russian banks. A new study examines whether these measures have affected payment flows in TARGET2.
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The exchange rate regime is key for the effects of the Bundesbank’s monetary policy on European countries from 1974 to 1998 Research Brief | 54th edition – December 2022
Record inflation in the euro area has led the ECB Governing Council to start raising its key interest rates. The effects on the domestic economy and spillover effects on foreign countries may primarily depend on whether exchange rates are floating or fixed. A new empirical study shows that, during the time of the Deutschmark, the Bundesbank’s monetary policy was transmitted to a significantly greater degree to neighbouring European countries with fixed exchange rates to the Deutschmark than to those with floating exchange rates to the Deutschmark.
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Individuals in Germany have suffered financial losses during the pandemic Research Brief | 53rd edition – September 2022
A Bundesbank survey shows that individuals living in Germany suffered different types of financial losses during the pandemic. Primarily individuals with lower incomes reported losses in wages and salaries which persisted much longer than other financial losses, such as falling securities prices. The latter were frequently reported at the start of the pandemic, but were subsequently offset at least partly, according to the respondents. It was mainly the more persistent wage and salary losses that changed households’ consumption and saving decisions. Altered saving and consumption behaviour can, in turn, affect the transmission of monetary policy measures.
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On the replenishment of securitised portfolios and the role of reputation and trans-parency in the securitisation market Research Brief | 52nd edition – August 2022
In a securitisation, a clearly defined and immutable loan portfolio is removed from a bank’s balance sheet and converted into marketable securities – that is the general understanding of how securitisation works. However, contrary to this view, the composition of securitised loan portfolios may change during the life of the securities. A new study explains why this is the case and examines the impact of replenishment on the quality of securitised portfolios. Originators’ reputation and transparency in the securitisation market are identified as key determinants in the selection of loans used to replenish securitised portfolios.
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What Moves Markets? Research Brief | 51st edition – August 2022
Are asset prices driven by news or by factors unrelated to economic fundamentals, such as market sentiment? In most asset pricing models news play a dominant role, but most empirical applications find only a low explanatory power of news. A new study examines this problem using an extensive time-stamped event database and finds that about half of all high-frequency market movements can be attributed to news.