News

2026

:

Thanks, Peter, for 25 years of ISIS!

Thanks, Peter, for 25 years of ISIS!
For the past eight years, Peter Mäusli-Allenspach has led our institute as president. At the 2026 ISIS General Assembly, he stepped down from the institute’s leadership and resigned from his positions.

Over the years, Peter has consistently led ISIS with great skill, foresight, and a commitment to providing high-quality continuing education in tax law. Under his leadership, ISIS has, among other things, established a subsidiary to organize its own seminars, developed a comprehensive and popular digital continuing education program , and launched *zsis* as an in-house online magazine dedicated to tax law.

Peter is a founding member of ISIS and, as a seminar leader, has had a profound influence on our training programs over the past 25 years. In particular, the popular two-day seminars on corporate tax law are closely associated with his name.

Dear Peter, you are leaving your successors with a well-established institute. We would like to express our sincere gratitude for your tremendous dedication, your empathetic leadership, and your invaluable contribution to the advancement of tax law—both within ISIS and beyond.

Peter MÄUSLI-ALLENSPACH, President ISIS

"The Federal Council's proposal for the reform of the withholding tax: A liberation strike on the wrong track? Moderation and input presentation that is inspiring and strengthens the resourcefulness Liberation strike on the wrong track? Moderation and input presentation that is inspiring and strengthens the resourcefulness."
ISIS) - Institute for Swiss and International Tax Law
ISIS) - Institute for Swiss and International Tax Law