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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,173 companies indexed · Last updated: today
DirectoryFiduciary Offices

Fiduciary Offices

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13'258 companies found

astrix GmbH Logo

astrix GmbH 

Arbon · Since 2017

astrix GmbH provides business analyses, project management, and process management and digitalization services. Its offerings include data and process analyses (including process- and supply‑chain analysis, market analysis), software evaluation and requirements engineering, and support for implementing digital tools such as process mining and AI applications.

Fiduciary Offices
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ATAG Private & Corporate Services AG Logo

ATAG Private & Corporate Services AG 

Basel · Since 1978

ATAG Private & Corporate Services AG is a family office providing comprehensive administration and advisory services for high-net-worth families and family-owned businesses. Services listed on the website include legal advisory (corporate, tax, family and inheritance law), tax planning, corporate services and administration, trust and foundation setup and management, family governance, philanthropy advice, and specialised art, maritime and aviation consulting.

Fiduciary Offices
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ATANERA Accounting & Consultancy SARL Logo

ATANERA Accounting & Consultancy SARL 

Perly · Since 2019

The core activity of Atanera is to provide services in the field of accounting, taxes and finance, including: accounting and taxation, private wealth management, and customized services and projects. The company thus offers specialized services to companies and individuals in the areas of finance, taxes and wealth management.

Fiduciary Offices
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a tb ag für treuhand und beratung Logo

a tb ag für treuhand und beratung 

Züberwangen · Since 1984

The core activity of the company "atb Treuhand und Beratung - awp Wirtschaftsprüfung" encompasses the provision of services in the areas of accounting, taxes, and corporate consulting. The company thus offers professional services to businesses and private individuals in these specific areas.

Fiduciary Offices
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atentis ag Logo

atentis ag 

Wil Sg · Since 2013

The core activity of atentis AG encompasses trust, tax and consulting services, in particular: Trust: accounting, payroll, personnel administration, preparation of value-added tax returns and annual financial statements; Taxes: tax consulting, tax planning, preparation of tax returns, review of tax assessments and representation before tax authorities; Consulting: business management consulting, succession planning, buying and selling of companies, company valuations, financial planning, budgeting, financing consulting and assumption of board of directors mandates.

Fiduciary Offices
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ATL-Treuhand Tamara Gauch Logo

ATL-Treuhand Tamara Gauch 

Oberarth · Since 2020

The core activity of ATL-Treuhand Tamara Gauch is the provision of services in the areas of accounting, personnel administration, tax consulting, business consulting, company formation and transformation, as well as trust services. The company offers its customers comprehensive support and consulting in these areas to support and optimize their business processes.

Fiduciary Offices
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Ätna Treuhand GmbH Logo

Ätna Treuhand GmbH 

Unterengstringen · Since 2006

The core activity of Ätna Treuhand GmbH is the provision of trust services, particularly in the areas of accounting and financial accounting, specifically for small and medium-sized enterprises (SMEs) in Switzerland.

Fiduciary Offices
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ATP Treuhand Anita Kägi Logo

ATP Treuhand Anita Kägi 

Hinwil · Since 2017

The core activity of ATP Treuhand Anita Kägi is the provision of trust and tax consulting services, including accounting, tax returns, tax planning and optimization, as well as audit expertise. The company offers individually tailored solutions for clients and accompanies them in all tax matters.

Fiduciary Offices
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atp solutions GmbH Logo

atp solutions GmbH 

Niederbuchsiten · Since 2017

The core activity of atp solutions is the development and provision of IT services, particularly in the field of ERP software (Enterprise Resource Planning), IT services with its own cloud infrastructure and web design. The company offers specialized solutions for the SME market, including inventory management systems, accounting and payroll software, as well as an innovative online portal for agricultural technology.

Fiduciary OfficesSoftware Trade
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Auditrium AG Logo

Auditrium AG 

Stans · Since 2009

Auditrium AG provides fiduciary, tax advisory and audit services, covering accounting, statutory and special audits and tax matters. Its services also include corporate and management consulting, HR/payroll support and digital solutions such as the Bill Bucher bookkeeping program and the Analise Franci reporting tool.

Fiduciary Offices
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Auditrium Zürich GmbH Logo

Auditrium Zürich GmbH 

Zurich · Since 2020

Auditrium Zürich GmbH provides fiduciary and advisory services including tax consulting, trust/treuhand services, statutory and special audits, corporate advisory and management services, as well as HR and payroll support. The firm also offers software products such as the accounting program Bill Bucher and the reporting tool Analise Franci.

Fiduciary Offices
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Avanta AG Logo

Avanta AG 

Zurich · Since 2024

Avanta AG is an independent professional services firm that provides accounting, audit, human resources, tax, legal and insurance services to companies and private clients.

Fiduciary Offices
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Avanta AG Logo

Avanta AG 

Baar · Since 2019

Avanta AG is an independent professional services firm that supports businesses and private clients in accounting, audit, human resources, tax, legal and insurance matters.

Fiduciary Offices
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Avanta AG Logo

Avanta AG 

Zug · Since 2024

Avanta AG is an independent professional services firm providing accounting, audit, human resources, tax, legal and insurance services to corporate and private clients. The company offers integrated fiduciary and advisory solutions across the value chain.

Fiduciary Offices
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Avanta Audit AG Logo

Avanta Audit AG 

Zurich · Since 2024

Avanta Audit AG provides audit and assurance services, including statutory financial statement audits (under the Swiss Code of Obligations/OR, Swiss GAAP FER and IFRS), pension fund audits, founding audits, valuation and arbitration reports, due diligence and post‑restructuring audits. Its auditors are authorised by the Swiss Federal Audit Oversight Authority (RAB).

Fiduciary Offices
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Avanta Audit AG Logo

Avanta Audit AG 

Baar · Since 2018

Avanta Audit AG is an audit services provider offering statutory financial statement audits under Swiss law, audits for pension funds and foundations, as well as due-diligence support, valuation and arbitration reports. Its auditors are licensed with the Swiss Federal Audit Oversight Authority (RAB) and also provide audits after restructurings or capital changes and reviews of internal control systems.

Fiduciary Offices
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Avanta Group AG Logo

Avanta Group AG 

Baar · Since 1982

Avanta Group AG is an independent professional services firm that advises and supports businesses and private clients in accounting, audit, human resources, tax, legal and insurance matters.

Fiduciary Offices
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Avanta Group AG Logo

Avanta Group AG 

Zurich · Since 2024

Avanta Group AG is an independent professional services firm providing accounting, audit, human resources, tax, legal and insurance services to companies and private clients. Its offerings include bookkeeping and financial reporting, audit and tax advisory, HR and payroll support, legal counsel and insurance/risk management.

Fiduciary Offices
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Avanta Group AG Logo

Avanta Group AG 

Zug · Since 2024

Avanta Group AG is a professional services firm supporting companies and private clients in accounting, audit, human resources, tax, legal and insurance services.

Fiduciary Offices
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Avanta Legal GmbH Logo

Avanta Legal GmbH 

Zug · Since 2014

Avanta Legal GmbH provides legal and notary services, covering areas such as corporate law, M&A (including notarisation), contract and commercial law, litigation and insolvency, property and inheritance law, and employment law.

Fiduciary Offices
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Frequently asked questions

Searching the directory

How the search works, what each filter means, and how the results come together.

What can I search for in the directory?
The search field matches company names, industries and places. Beyond that you can filter by Industry (18 categories based on the NOGA classification), Size (number of employees), Region (canton, language region or postal code) and Special (keywords and entry date). Filters combine freely; the active ones appear as chips below the filter bar and can be removed there individually.
How do keywords work?
Keywords search the description and stated purpose of each company — the text that goes beyond the company name. Multiple keywords are combined with OR: every additional keyword widens the set of matches rather than narrowing it.
What belongs in the postal code field?
A single postal code (e.g. 8000) or a range (e.g. 1000-1010). The field accepts postal codes only — for place names, use Canton or Language region.
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How is organisation size determined?
Size reflects the number of employees and is calculated from publicly available information by a model developed in-house. It is a best-possible estimate, not an official figure.
What does the Verified label mean?
Verified means the entry is tied to a UID (Swiss business identification number) and therefore links back to the official Swiss business register. The label speaks to the company's identity — it is not a rating of its performance.

Source: Federal Statistical Office, UID register

How do I sort the results?
Use the dropdown above the list: Relevance, Name (A–Z), Best rating, Most reviews or Longest established. You can also switch between list and map view and set how many results appear per page.
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