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Welcome to the website of the Chair of Business Administration, in particular Corporate Taxation

Team Lehrstuhl UB

Prof. Dr. Martin Thomsen and his team focus their teaching and research on corporate taxation at the University of Siegen. In doing so, emphasis is always placed on interaction with business practice.

Students, researchers and practice partners - on the following web pages, all interest groups will find all the information they need about our chair. If you have any questions or suggestions, please do not hesitate to contact us.

We look forward to getting to know you!

Prof. Dr. Martin Thomsen and his team

Logo TaXquisite

The application period for TaXquisite has begun—apply by October 20!

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New Publication on Sustainability Reporting: Balancing Compliance and Competition

The article “From Compliance to Competitive (Dis)Advantage? The Transformation of Corporate Sustainability Reporting” by Mareike Hockmann and Martin Thomsen has been published in the journal *Strategic Change*, Volume 35, Issue 5 (read it here).

TaXcellence

TaXcellence Awards 2025

Award for Outstanding Academic Achievement

DATEV Bildungspartner

DATEV Certification at the UB Department

TaXquisite PwC 2026 LUB

TaXquisite Visits PwC Tax in Düsseldorf

Networking at a Public Viewing Event

Minigolf LUB

Time for Team Spirit

A team social event fosters interaction outside of the daily work routine

taxquisite_deloitte

Visit to Deloitte in Düsseldorf

Artificial Intelligence and Tax Accounting in Practice

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From Compliance to Competitive (Dis)Advantage? The Transformation of Corporate Sustainability Reporting

Empirical research on the development of sustainability reporting and the competitiveness of German companies

TaXquisite Sparkasse LUB

Review of our TaXquisite event at Sparkasse Siegen

Exciting insights into taxes, finance and pensions on May 13, 2026

Contact us

Postal address

University of Siegen

Schools III

Chair of Business Administration, in particular Corporate Taxation

57068 Siegen

Visitor address

University of Siegen

Schools III

Chair of Business Administration, in particular Corporate Taxation

Prof. Dr. Martin Thomsen

Lower Castle 3

57072 Siegen