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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

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

Logo LUB

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

Mareike Hockmann

Mareike Hockmann joins the Chair of Corporate Taxation!

Prof. Thomsen welcomes Mareike Hockmann as a research assistant.

Logo TaXquisite

New application phase for TaXquisite

Apply now until April 21, 2026!

WS2526 Finanzamt Lehrstuhl UB

A guest at the Siegen tax office

Practical insights for participants in the TaXquisite program

Prof. Dr. Martin Thomsen

Prof. Dr. Martin Thomsen becomes the new holder of the Chair of Corporate Taxation!

On 30.01.2023, Prof. Dr. Martin Thomsen will start at the University of Siegen and take over the Chair of Corporate Taxation.

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