Prof Dr oec publ Julia von Ah

Prof Dr oec publ Julia von Ah is a Partner and certified tax expert (dipl. Steuerexpertin) at von Ah & Partner AG, a specialist tax advisory firm based in Zurich, Switzerland. She has been recognised as Tax Law Expert of the Year in Switzerland at the Corporate INTL Global Awards 2026, an award that reflects both her standing as a leading practitioner and her prominence in Swiss tax scholarship.

A specialist Swiss tax practice

von Ah & Partner AG is a tax advisory firm headquartered at Seestrasse 344 in Zurich, dedicated to tax law for both private individuals and businesses. The firm expresses its ethos in the phrase “Steuerrecht ist unsere Leidenschaft” — tax law is our passion — and describes its work under the motto “Innovation und Inspiration – mit Bodenhaftung”, combining creative, forward-looking thinking with a grounded, practical approach. The firm provides tailored tax advisory services across both private and corporate contexts, drawing on a team of certified tax experts and fiduciary professionals.

The quality of the practice has been consistently acknowledged by the Swiss business press: von Ah & Partner has been ranked among the top tax experts and fiduciaries (“TOP STEUEREXPERTEN & TREUHÄNDER”) in Switzerland for several consecutive years by BILANZ and Handelszeitung. Julia von Ah leads the firm alongside a team of tax specialists, combining private client and corporate tax capability.

An academic and practitioner in Swiss tax law

Julia von Ah holds the academic distinction of Professor and the title Dr oec publ, marking her as both a scholar and a practising tax expert — a combination that is highly valued in the Swiss tax field. She is a recognised authority whose engagement extends beyond client advice into the wider tax community; she co-leads the Neue Zürcher Steuerkonferenz, a professional conference bringing together tax practitioners, reflecting her role in shaping and disseminating expertise in the discipline.

Switzerland presents one of the most distinctive and complex tax environments in the world. Its federal structure means that taxation operates at three levels — federal, cantonal and communal — with significant variation between the 26 cantons in rates and rules. This layered system creates both planning opportunities and compliance challenges for individuals and companies alike. Swiss tax practitioners advise on matters ranging from corporate taxation and restructurings to the taxation of individuals, wealth and succession, cross-border arrangements, and the interaction of domestic law with Switzerland’s network of double taxation treaties. Expertise of the kind embodied by Julia von Ah — grounded in both academic depth and practical experience — is essential to navigating this environment effectively.

Serving private and corporate clients

The firm’s dual focus on private individuals and businesses allows it to advise clients across the full spectrum of Swiss tax questions, from the tax planning of entrepreneurs and family enterprises to the structuring needs of companies. By concentrating exclusively on tax and fiduciary work, von Ah & Partner offers clients a depth of specialisation that a generalist practice cannot match, delivered by a team whose expertise has been repeatedly acknowledged by independent rankings.

For Julia von Ah, the combination of academic standing and practical advisory work is mutually reinforcing. Engagement with scholarship and professional education keeps a practitioner at the forefront of developments in a fast-moving field, while day-to-day client work grounds that knowledge in real commercial problems. Swiss tax law is subject to continual change, shaped by domestic reform, international standards on transparency and the taxation of multinational enterprises, and the evolving practice of the cantonal and federal authorities. A tax expert who is also a professor is well equipped to interpret these developments and to advise clients on how best to respond, whether the question concerns the restructuring of a company, the succession planning of a family business, or the tax position of an individual with cross-border interests.

Corporate INTL Global Awards 2026

The Corporate INTL Global Awards 2026 — Tax Law Expert of the Year in Switzerland recognises Prof Dr Julia von Ah of von Ah & Partner AG for her individual expertise and her leadership within Swiss tax practice and scholarship. For private clients and businesses seeking authoritative, specialist tax advice in Switzerland, Julia von Ah offers the rare combination of academic authority and practical, client-focused experience from an established Zurich firm.