Gen­er­al In­form­a­tion

Wie reagieren Privatinvestor*innen auf den Ausbruch von COVID-19? Expert*innen, Politiker*innen und Medien zeichnen bislang ein uneinheitliches Bild von den wirtschaftlichen Folgen der Corona-Krise. Auch Reaktionen von individuellen Markteilnehmer*innen sind nur schwer prognostizierbar. Jun. Prof. Regnina Ortmann, Ph.D, Jun. Prof. Dr. Matthias Pelster und Dr. Sascha Tobias Wengerek kommen zu dem Ergebnis, dass Investor*innen seit Ausbruch der…

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Due to the corona crisis, this year's Paderborn Easter run, like all events in public life, could not take place. The employees of the tax professorships showed team spirit and supported the good cause with their PaderbornerOsterSOLOLOlauf. The Sparkasse Paderborn-Detmold donates €10 per runner and a total of €75,000 to organizations in the region that care for the homeless and provide food for the people in need.

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This year the "Teaching Award of the Faculty of Economics for special commitment in teaching" at Paderborn University is awarded to Jun.-Prof. Regina Ortmann. The basis for the award of the teaching prize for Jun.-Prof. Regina Ortmann is her conception and realisation of the module "Transfer pricing in the field of tension between control and taxation". The module combines the two disciplines of taxation and controlling. This can be seen both in…

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On September 27th, 2019 Jun.-Prof. Regina Ortmann, Ph.D. participates in the “Sixteenth Symposium on Tax Research” organized by the University of Illinois at Urbana-Champaign and Deloitte Tax LLP. The goal of the Symposium is to bring together scholars, practitioners, and regulators working on current issues in taxation.

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On August 15th – 16th,  2019.Jun.-Prof. Regina Ortmann, Ph.D. participates in the conference "Accounting Summer Camp " at the Stanford Graduate School of Business

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On August 2nd - 3rd, 2019 Jun.-Prof. Regina Ortmann, Ph.D. participates in the conference "Theory and Inference in Accounting Research" at the Stanford Graduate School of Business.

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From July to November 2019 Regina Ortmann is on a research stay at the Stanford Graduate School of Business, USA.

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The chair for International Business Taxation of Jun.-Prof. Regina Ortmann, Ph.D., is looking for a new research assistant starting at the next possible date. For further information, please click here. 

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Since October 9th, 2017 Jun.-Prof. Regina Ortmann, Ph.D. holds the junior professorship for International Business Taxation. From the beginning of the winter term 2017/2018 Regina Ortmann will complement the teaching offer of the department 2.

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Re­search

On July 15th, 2022, Regina Ortmann is the discussant for the presentation on "Taxes and the Investments of Mutual Funds - Evidence from the German Investment Tax Reform" by Lena Schön and Reinald Koch at the 17th arqus annual meeting at Magdeburg University.

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TRR 266/TAF Research Seminar On July 12, 2022, Peter Limbach (Universität Bielefeld) presented the paper "Blockholder Representation on the Board: Theory and Evidence" at the TRR 266/TAF Research Seminar. Prof. Dr. Limbach presented a model that helps explain why only few blockholders seek board representation despite little direct costs. In the model, inefficiently few blockholders take a board seat because it signals adverse information to…

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TAF Brown Bag Sem­in­ar: Re­gina Ort­mann: "Tax­ing net­work products - the im­pact on de­cisions of MNEs"

As part of the Brown Bag Seminars, Regina Ortmann gave a presentation on July 5, 2022 on the topic "Taxing network products - the impact on decisions of MNEs".

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As part of the Brown Bag Seminars, Sebastian Hinder gave a presentation on June 28, 2022 on the topic "Management Guidance & Analyst Forecasts: The Peculiar Role of Tax Forecasting".

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TRR 266/TAF Research Seminar On June 21, 2022, Ken Klassen (University of Waterloo) presented the paper "Tax Aggressive Behavior and Voluntary Tax Disclosures in Corporate Sustainability Reporting" at the TRR 266/TAF Research Seminar. The paper is co-authored work with Jilian R. Adams and Elizabeth Demers (all University of Waterloo, Ontario, Canada). In this study, the authors analyze determinants of firms’ decisions to disclose tax…

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TAF Brown Bag Sem­in­ar: Stephan Kais­er: "Changes in Firm­s’ Busi­ness Mod­els and Ab­nor­mal Ac­cru­als"

As part of the Brown Bag Seminars, Stephan Kaiser gave a presentation on June 14, 2022 on the topic "Changes in Firms’ Business Models and Abnormal Accruals".

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As part of the Brown Bag Seminars, Elisa Casi-Eberhard gave a presentation on June 7, 2022 on the topic "So close and yet so far: the ability of mandatory disclosure regimes to crack down on offshore tax evasion".

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TAF Brown Bag Sem­in­ar: Arndt Wein­rich: "Green Tax Un­cer­tainty & In­nov­a­tion"

As part of the Brown Bag Seminars, Arndt Weinrich gave a presentation on May 24, 2022 on the topic „Green Tax Uncertainty & Innovation".

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TRR 266/TAF Research Seminar On May 17, 2022, Beatrice Michaeli (University of California, Los Angeles, USA) presented the paper "Boards and Executive Compensation: Another Look" at the TRR 266/TAF Research Seminar. The paper is joint work with Martin Gregor (Charles University, Institute of Economic Studies, Czech Republic). This paper examines the optimal contracts offered to CEOs and boards in a classic economic setting where a centralized…

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Sorting options on the difference of realized volatility and implied volatility

TAF Research Seminar On May 3, 2022, Gregor Weiß (Leipzig University) presented the paper "Characteristic Portfolios, Conditional Quantile Curves, and the Cross-Section of Option Returns" at the TAF Research Seminar. The paper is joint work with Felix Irresberger (Durham University, UK) and Simon Fritzsch (Leipzig University). The paper proposes to use non-parametric machine learning methods to estimate quantile curves in asset pricing. The…

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Teach­ing

On Monday, December 10th, 2018, Professor Dr. Christoph Spengel gives a practical lecture in the course business and corporate taxation "Die größten Steuerräuber Deutschlands: Cum/Ex, Cum/Cum und Cum/Fake". The guest lecture takes place in lecture hall O1 at 4 p.m.

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Guest Lec­ture in the course Busi­ness and Cor­por­ate Tax­a­tion, Mi­chael Diehl, Laura Bienek, KP­MG AG

On November 12th, 2018, tax advisor Michael Diehl and Laura Bienek give a practical lecture in the course Business and Corporate Taxation. The guest lecture takes place in lecture room P7.2.01 at 4 p.m.

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On Monday, November 27th, 2017 tax advisor Michael Diehl and Laura Schramm give a practical lecture. "Wohlverhalten im Steuerrecht - Von internationaler Steuerplanung über Paradise Papers bis Tax CMS". The guest lecture takes place in lecture room P7 2.03 from 4 pm to 6 pm.

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