Fiduciary Offices

Zemp Data 

Cham · Since 1983

Zemp Data offers vinyl vehicle films and related services, and presents a selection of wrap colours and film types on its website.

ZENTEX Treuhand AG 

Wettingen · Since 1983

The core activity of Zentex Treuhand AG consists of providing trust services, including accounting, tax consulting, business consulting and other related services for companies and private individuals.

ZGRAGGEN & Partner AG 

Rotkreuz · Since 2015

ZGRAGGEN & Partner AG is an owner-managed, independent advisory firm specializing in tax law, financial accounting and payroll administration. Services include tax planning and declarations, bookkeeping and financial statement preparation, VAT matters, tax advice for real estate projects and support on corporate governance and restructurings.

Ziegler Accounting GmbH 

Kriessern · Since 2008

Zimmerli Treuhand 

Bern · Since 1995

The core activity of Zimmerli Treuhand is the provision of trust services, particularly in the areas of accounting, tax consulting, inheritance and gift taxes, as well as general financing issues in investment decisions and pension planning for private individuals, self-employed entrepreneurs and companies of all legal forms.

Zimmermann & Co GmbH 

Birmensdorf Zh · Since 2021

Zurfluh Treuhand AG 

Baar · Since 2010

Zurfluh Treuhand AG provides fiduciary services to corporate and private clients, including bookkeeping, company formation, and support for mergers, reorganizations and liquidations. The firm also offers business and tax advisory and comprehensive, personal consultancy delivered by experienced staff, and it is a member of Treuhand Suisse.

Zurkirchen Partner GmbH 

Rotkreuz · Since 2011

Zweifel Consulting GmbH 

Wangen Sz · Since 2011

The core activity of Zweifel Consulting is the creation of websites and the provision of services in the field of web design.

Zwingli Partner AG 

Bad Ragaz · Since 2021

Zwingli Partner AG provides independent, tailor-made support for entrepreneurs, entrepreneurial families and private clients, focusing on family office services, special projects and discreet negotiation management. Services include wealth structuring and succession planning, implementation of individual projects (e.g. relocation, company formation, acquisitions) and acting as a mediator in sensitive negotiations.

DigiTrust Treuhand AG 

Glis · Since 2025

The core activity of DigiTrust Treuhand AG is the provision of trust services, including accounting, taxes and corporate consulting, with a focus on digital efficiency, transparent processes and personal consulting.

CSD Management SA, Zweigniederlassung Chur 

Chur · Since 2025

CSD Management SA, Zweigniederlassung Chur provides geological, environmental and engineering services, with emphasis on geology for underground and tunnel construction, natural hazard assessment, hydrogeology and investigations of contaminated sites. The office also performs assessments of building pollutants and offers consulting and planning services for water, energy, infrastructure and environmental projects.

SwissSino Treuhand GmbH 

Unterägeri · Since 2025

KMS CORDIS audit AG 

Aarberg · Since 2025

Summit Accounting GmbH 

Sissach · Since 2025

Thalheim Treuhand GmbH 

Zug · Since 2025

Thalheim Treuhand GmbH provides fiduciary and advisory services, including accounting and tax services, company formation, business sales and valuations, debt restructuring, and real-estate services.

FIDUM GESTION SA 

Etagnières · Since 2025

Loroway AG 

Zurich · Since 2025

Doncev Treuhand AG 

Brügg Be · Since 2025

Seraama Bespoke Legal Services GmbH 

Zug · Since 2025

Seraama Bespoke Legal Services GmbH provides bespoke legal solutions for international businesses, covering Swiss company formation, fiduciary and directorship services, compliance and data privacy advice, and tailored commercial contracts and legal templates.