A success story
since 1946.

1946 — 1976
In 1946 Jakob Aeberli wrote the first chapter: he founded Aeberli Treuhand. In 1976 he changed the legal form of his company from a sole proprietorship to a joint stock company, which was then managed by three generations until 2019 – most recently by Max Baumann, Ulrich Linder and Mario Rissi. Today, Aeberli serves clients from all industries, from individuals and small businesses to SMEs and major international corporations.
– since 1946
–
Testimonies of a success story
A new generation
with passion.

2019 — 2020

In 2019 the fourth generation took over the reins. Full of commitment and dedication, Christian Nussbaumer, Feri Cilurzo and Benjamin Block are now managing the company.  

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Strong together
Good reasons
to celebrate.

In 2021 Aeberli Treuhand is turning 75. We’re celebrating this significant milestone with our new partners. Our anniversary celebrations will honour Aeberli’s latest generation as well as our long-standing traditions of quality, performance and trust. Our vision remains unchanged. Then as now, we always strive to go the extra mile for our clients. That’s why we are among the top 10 business consulting firms in the greater Zurich area.


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Expertise and care
–
Giving trust
Welcome to the
team of doers.
Qualified and committed employees are our most important asset. Our professionalism commits us to the highest standards of expertise and personal excellence. That's why you will always have an experienced partner at your side and, over time, a trusted confidant. We all form a team which is only satisfied with its work when you are.
Areas of expertise
Classic Fiduciary Services
Accounting according to CO
Accounting according to Swiss GAAP FER and IFRS
Payroll Serivces and Social Insurances
Tax expertise natural persons
Tax expertise legal persons
Real Estate Accounting and Administration
Digitization and Process Optimization
Natinoal and Internatinoal VAT
Inheritance, Marriage and Divorce Topics
Restructuring and Reorganization of Companies
Money Laundering Act
Audit
Internal Services (they keep your backs free)
Function
Partner
Team Leader
Location
All locations
Zurich
Zug
Lucerne
Mirko Agustoni

Mirko Agustoni

Lic. iur., LL.M. Swiss and international Taxation
+
Ferihan Ajroska

Ferihan Ajroska

Auditor
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Christian Alder

Christian Alder

Fiduciary Clerk
+
Theodor Bahnan

Theodor Bahnan

Apprentice
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Samela Baschera

Samela Baschera

Payroll HR / Abacus Consultant
+
Max Baumann

Max Baumann

MA in Business Administration
Certified Auditor
+
Benjamin Block

Benjamin Block

Certified Auditor
Partner
+
Isabelle Block

Isabelle Block

BSc in Media- and communicationsmanagement
Social Media Manager
+
Jeanette Boss

Jeanette Boss

Fiduciary Expert with Professional Certification, Social Insurance Specialist with Professional Certification
+
Mario Brändle

Mario Brändle

Certified Auditor, Certified Fiduciary Expert
Teamleader
+
Noemi Buchs

Noemi Buchs

Apprentice
+
Michel Carli

Michel Carli

Certified Fiduciary Expert
+
Feri Cilurzo

Feri Cilurzo

Certified Fiduciary Expert
Partner
+
Adrian Cilurzo

Adrian Cilurzo

Certified Accounting Expert

+
Amel Cizmic

Amel Cizmic

Fiduciary Clerk
+
Stefan Djukić

Stefan Djukić

Certified Accounting Expert
Mandate Manager
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Loris Eberhard

Loris Eberhard

Fiduciary Clerk
+
Mike  Eichmüller

Mike Eichmüller

Fiduciary Expert with Professional Certification
+
Marco Fernandes

Marco Fernandes

IT & System Administrator
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Stephanie Fischer

Stephanie Fischer

MA in Business Administration
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Petra Fleischli

Petra Fleischli

Secretariat
+
Claudia Frei

Claudia Frei

Master of Accounting and Finance HSG,
Certified Auditor
+
Sandro Geiger

Sandro Geiger

Certified Accounting Expert
+
Petra  Gössi

Petra Gössi

lic. iur. MAS Economic Crime Investigation, EMBA HSG
External Consultant
+
Daniela Grieser

Daniela Grieser

Secretariat
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Julia Holzschuh

Julia Holzschuh

Tax Consultant (DE)
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Siro Impusino

Siro Impusino

Fiduciary Clerk
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Alba   Kasumi

Alba Kasumi

Certified Accounting Expert
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Harald Kilchmann

Harald Kilchmann

Certified Accounting Expert
Teamleader
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Sonja Kunarathinam

Sonja Kunarathinam

Fiduciary Expert
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Uli Linder

Uli Linder

Certified Auditor
+
Frank-Elmar  Linxweiler

Frank-Elmar Linxweiler

Certified economist, lic.oec.HSG
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Marco Meier

Marco Meier

Fiduciary Expert with Professional Certification
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Hans Mettler

Hans Mettler

BSc in Business Administration
+
Joséphine Michel

Joséphine Michel

Audit Assistant
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Yvonne Müller

Yvonne Müller

Fiduciary Expert with Professional Certification
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Christian Nussbaumer

Christian Nussbaumer

Certified Fiduciary Expert
Partner
+
Felipe Nussbaumer

Felipe Nussbaumer

Apprentice
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Nicole Reuteler

Nicole Reuteler

Certified HR Specialist
Vocational Trainers
+
Thomas Reuteler

Thomas Reuteler

Certified Accounting Expert
+
Lenny Riillo

Lenny Riillo

Apprentice
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Mario Rissi

Mario Rissi

Certified Auditor
+
Maja Rumberger

Maja Rumberger

Fiduciary Clerk
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Kofand Saadi

Kofand Saadi

Fiduciary Clerk
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Michael Schmid

Michael Schmid

Apprentice
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Janine     Schumacher

Janine Schumacher

Certified HR Specialist
Vocational Trainer
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Jürg Siegfried

Jürg Siegfried

BSc in Business Administration
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Rémy  Sommerhalder

Rémy Sommerhalder

Fiduciary Expert with Professional Certification
Teamleader
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Jeremy Sprecher

Jeremy Sprecher

Master of Advanced Studies FH in Fiduciary and Management Consulting, Certified Fiduciary Expert, Business Economist ZFH
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Gerhard Stäheli

Gerhard Stäheli

Fiduciary Expert with Professional Certification
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Homed David Stingl

Homed David Stingl

IT-Security-Specialist
External Consultant
+
Franziska Suter

Franziska Suter

Head Of Secretariat
Vocational Trainers
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Olivia Vollenweider

Olivia Vollenweider

Certified Fiduciary Expert
Teamleader
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Sara  von Felten

Sara von Felten

Fiduciary Clerk
Vocational Trainer
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Martin Welser

Martin Welser

Certified Auditor/ IFRS Specialist
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Roman Wey

Roman Wey

Head of IT/ Abacus Implementation Specialist
Vocational Trainer
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Marcel Widler

Marcel Widler

Certified Auditor
Teamleader
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Annina Widmer

Annina Widmer

Fiduciary Expert with Professional Certification, Certified social insurance specialist
Teamleader, Vocational Trainer
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Petra Wirth

Petra Wirth

Business Economist,
BA in Business Administration
+
Lisbeth Zangger

Lisbeth Zangger

Certified Accounting Expert, Certified Human Resources Specialist
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Jehona Ziba

Jehona Ziba

Fiduciary Expert with
Professional Certification
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Céline Zobrist

Céline Zobrist

Fiduciary Expert with Professional Certification
+

 

 

Strong together.
Network
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TREUHAND|SUISSE
The 12 regional sections of Swiss Fiduciary Association TREUHAND|SUISSE cover the whole of Switzerland and have over 2,100 individual and corporate members. This allows the association to use its weight and professional structures to promote the interests of its members and the industry.
For fiduciary companies with high quality standards, membership of TREUHAND|SUISSE has established itself as a standard over the years. TREUHAND|SUISSE brings together fiduciary experts who work primarily for SMEs and private individuals. The majority of them come from owner- or partner-operated fiduciary companies. In total, the company members affiliated to TREUHAND|SUISSE employ 10,000 staff, including 750 apprentices. The members of TREUHAND|SUISSE serve over 350,000 SMEs and private individuals. With our Chairman of the Board of Directors, Christian Nussbaumer, we at Aeberli also have the Chairman of the Zurich section of TREUHAND|SUISSE on board and are therefore always at the pulse of the latest developments in the industry.

Visit website
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AGN International
With AGN International we belong to a prestigious international association and therefore have access to the know-how of 183 consulting offices in 86 countries. Thus, we have the opportunity to approach international tax issues as well as extensive corporate audits in cooperation with our partners. The association character does not only exist on paper, but we are in regular, close contact with our partners and come together several times a year for meetings and professional exchanges. Therefore, we know the faces of our partners personally and can guarantee the highest quality of service.

Visit website
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EXPERTsuisse
EXPERTsuisse, the expert association for auditing, taxes and fiduciary, has been training, supporting and representing Certified Experts for over 90 years. The association counts 9,000 natural persons from the fields of auditing as well as business and tax consultancy among its members. In addition to the large auditing companies, its members include around 800 medium-sized and smaller fiduciary companies.
EXPERTsuisse - like TREUHAND|SUISSE - forms a nationwide network of professionals who exchange and support each other through the common platforms, further training and working aids. Membership of these professional associations is also conditional on regular and specific further training for members, which commits us to the highest quality.

Visit website
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Apprenticeship
The label for training companies was first introduced in French-speaking Switzerland in 1997. In 2004, the State Secretariat for Education, Research and Innovation SERI, in cooperation with the cantons, finally launched the project nationally. The label is a recognition and a thank you to the training companies for their commitment to vocational training. It is intended to show our clients: We provide training and thus make our contribution to Switzerland as a location for education.

Visit website
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