Juniorprofessorin Dr. Lena Tonzer

Juniorprofessorin Dr. Lena Tonzer
Aktuelle Position

seit 9/17

Juniorprofessorin

Martin-Luther-Universität Halle-Wittenberg

seit 5/14

Leiterin der Forschungsgruppe Regulierung internationaler Finanzmärkte und Banken

Leibniz-Institut für Wirtschaftsforschung Halle (IWH)

seit 5/14

Leiterin der International Banking Library

Leibniz-Institut für Wirtschaftsforschung Halle (IWH)

Forschungsschwerpunkte

  • Banken- und Staatsschuldenkrisen
  • Integration auf Finanzmärkten
  • Bankenregulierung
  • International Banking Library

Lena Tonzer ist seit September 2017 Juniorprofessorin an der Martin-Luther-Universität Halle-Wittenberg (ESF-Projekt Die politische Ökonomie der europäischen Bankenunion) und seit Mai 2014 Mitglied der Abteilung Finanzmärkte am IWH. Seit 2019 ist sie zudem SUERF Research Affiliate. Sie forscht zu den Themen Banken- und Staatsschuldenkrisen, Integration auf Finanzmärkten und Bankenregulierung.

Lena Tonzer studierte an der Eberhard Karls Universität Tübingen und promovierte am Europäischen Hochschulinstitut (EUI) in Florenz, Italien.

Ihr Kontakt

Juniorprofessorin Dr. Lena Tonzer
Juniorprofessorin Dr. Lena Tonzer
Mitglied - Abteilung Finanzmärkte
Nachricht senden +49 345 7753-835 Persönliche Seite

Publikationen

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Do Conventional Monetary Policy Instruments Matter in Unconventional Times?

Manuel Buchholz Kirsten Schmidt Lena Tonzer

in: Journal of Banking & Finance, 2020

Abstract

This paper investigates how declines in the deposit facility rate set by the ECB affect euro area banks’ incentives to hold reserves at the central bank. We find that, in the face of lower deposit rates, banks with a more interest-sensitive business model are more likely to reduce reserve holdings and allocate freed-up liquidity to loans. The result is driven by banks in the non-GIIPS countries of the euro area. This reveals that conventional monetary policy instruments have limited effects in restoring monetary policy transmission during times of crisis.

Publikation lesen

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Interactions Between Bank Levies and Corporate Taxes: How is Bank Leverage Affected?

F. Bremus Kirsten Schmidt Lena Tonzer

in: Journal of Banking & Finance, 2020

Abstract

Regulatory bank levies set incentives for banks to reduce leverage. At the same time, corporate income taxation makes funding through debt more attractive. In this paper, we explore how regulatory levies affect bank capital structure, depending on corporate income taxation. Based on bank balance sheet data from 2006 to 2014 for a panel of EU-banks, our analysis yields three main results: The introduction of bank levies leads to lower leverage as liabilities become more expensive. This effect is weaker the more elevated corporate income taxes are. In countries charging very high corporate income taxes, the incentives of bank levies to reduce leverage turn insignificant. Thus, bank levies can counteract the debt bias of taxation only partially.

Publikation lesen

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Delay Determinants of European Banking Union Implementation

Michael Koetter Thomas Krause Lena Tonzer

in: European Journal of Political Economy, 2019

Abstract

Most countries in the European Union (EU) delay the transposition of European Commission (EC) directives, which aim at reforming banking supervision, resolution, and deposit insurance. We compile a systematic overview of these delays to investigate if they result from strategic considerations of governments conditional on the state of their financial, regulatory, and political systems. Transposition delays pertaining to the three Banking Union directives differ considerably across the 28 EU members. Bivariate regression analyses suggest that existing national bank regulation and supervision drive delays the most. Political factors are less relevant. These results are qualitatively insensitive to alternative estimation methods and lag structures. Multivariate analyses highlight that well-stocked deposit insurance schemes speed-up the implementation of capital requirements, banking systems with many banks are slower in implementing new bank rescue and resolution rules, and countries with a more intensive sovereign-bank nexus delay the harmonization of EU deposit insurance more.

Publikation lesen

Arbeitspapiere

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How Effective are Bank Levies in Reducing Leverage Given the Debt Bias of Corporate Income Taxation?

F. Bremus Kirsten Schmidt Lena Tonzer

in: SUERF Policy Brief, Nr. 21, 2020

Abstract

To finance resolution funds, the regulatory toolkit has been expanded in many countries by bank levies. In addition, these levies are often designed to reduce incentives for banks to rely excessively on wholesale funding resulting in high leverage ratios. At the same time, corporate income taxation biases banks’ capital structure towards debt financing in light of the deductibility of interest on debt. A recent paper published in the Journal of Banking and Finance shows that the implementation of bank levies can significantly reduce leverage ratios, however, only in case corporate income taxes are not too high. The result demonstrates that the effectiveness of regulatory tools can depend upon non-regulatory measures such as corporate taxes, which differ at the country level.

Publikation lesen

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Asymmetric Investment Responses to Firm-specific Forecast Errors

Julian Berner Manuel Buchholz Lena Tonzer

in: IWH-Diskussionspapiere, Nr. 5, 2020

Abstract

This paper analyses how firm-specific forecast errors derived from survey data of German manufacturing firms over 2007–2011 affect firms’ investment propensity. Understanding how forecast errors affect firm investment behaviour is key to mitigate economic downturns during and after crisis periods in which forecast errors tend to increase. Our findings reveal a negative impact of absolute forecast errors on investment. Strikingly, asymmetries arise depending on the size and direction of the forecast error. The investment propensity declines if the realised situation is worse than expected. However, firms do not adjust investment if the realised situation is better than expected suggesting that the uncertainty component of the forecast error counteracts positive effects of unexpectedly favorable business conditions. Given that the fraction of firms making positive forecast errors is higher after the peak of the recent financial crisis, this mechanism can be one explanation behind staggered economic growth and slow recovery following crises.

Publikation lesen

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Financial Linkages and Sectoral Business Cycle Synchronisation: Evidence from Europe

Hannes Böhm Julia Schaumburg Lena Tonzer

in: IWH-Diskussionspapiere, Nr. 2, 2020

Abstract

We analyse whether financial integration between countries leads to converging or diverging business cycles using a dynamic spatial model. Our model allows for contemporaneous spillovers of shocks to GDP growth between countries that are financially integrated and delivers a scalar measure of the spillover intensity at each point in time. For a financial network of ten European countries from 1996-2017, we find that the spillover effects are positive on average but much larger during periods of financial stress, pointing towards stronger business cycle synchronisation. Dismantling GDP growth into value added growth of ten major industries, we observe that some sectors are strongly affected by positive spillovers (wholesale & retail trade, industrial production), others only to a weaker degree (agriculture, construction, finance), while more nationally influenced industries show no evidence for significant spillover effects (public administration, arts & entertainment, real estate).

Publikation lesen
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