Fiduciary Offices

ACR Solutions GmbH 

Oberiberg · Since 2000

ACTA SA 

Geneva · Since 2012

The core activity of ACTA SA is to provide services in the fields of auditing, tax consulting, business consulting and legal consulting. Specifically, this includes: Auditing, Tax consulting, Business consulting, Legal consulting, Representation for value-added tax (VAT), and Trust services (Fiduciary partner FMH). The company offers its clients a wide range of services to meet their financial, legal and organizational needs.

ACTAS - Kanzlei für Steuerrecht - Bruno Tringaniello 

Baar · Since 2000

The core activity of Actas is legal and tax consulting. The company offers services in the areas of tax law, legal advice and trust services, and has a network of partners active in various fields such as economy, law and taxes.

ACT Audit & Tax AG 

Zug · Since 2008

The core activity of ACT AG is the provision of services in the fields of auditing, tax consulting, accounting, fiduciary and business consulting. The company offers consulting services for companies and private individuals and is a member of EXPERTSuisse.

Actieninvest AG 

Zurich · Since 1987

Actieninvest AG is an independent asset management firm offering tailored investment and wealth-management services to private clients. Services include portfolio management focused on equities, real‑estate investments and commodity exposures, as well as family‑office services with administrative and accounting support; investment policies are implemented under a limited management mandate.

Activa Treuhand 97 AG 

Herrliberg · Since 2010

The core activity of Activa Treuhand AG is the provision of trust services, including accounting, tax consulting, business consulting and other related services for companies and private individuals.

Activa Wealth AG 

Basel · Since 2020

The core activity of Activa Wealth AG is the provision of services in the field of international consulting and succession planning, particularly in the areas of inheritance and succession planning, Family Office and Family Governance.

Acton Revisions AG 

Zug · Since 1975

Acton Revisions AG provides statutory audit and assurance services and related audit advisory work. The firm also offers services in accounting, tax (including VAT advisory), payroll and company formation for SMEs and private clients.

Acton Treuhand AG 

Zug · Since 1984

Acton Treuhand AG is a fiduciary firm providing trusteeship, tax advisory and audit services to corporate and private clients. Additional services listed on the website include company formation, fiscal representation, VAT consulting, accounting, payroll and office rental.

ac treuhand & finanzen GmbH 

Zurich · Since 2021

ac treuhand & finanzen GmbH provides fiduciary and financial services, including financial and payroll accounting, tax processing, preparation of annual and interim financial statements, and VAT returns. Additional services include company formation, secretarial work, accounts payable/receivable and advice on financial and liquidity planning, with reporting according to OR and Swiss GAAP FER.

AC Verwaltungs GmbH 

Zug · Since 2014

Adasco A.G. 

Biel/Bienne · Since 1989

The core activity of Adasco AG is trust services, particularly in the areas of: General trust services (company formation, transformation and liquidation, financial planning, company valuation, budgeting, liquidity planning), Accounting (management of financial accounting, accounts receivable, accounts payable, VAT returns), Payroll and social insurance (management of payroll accounting, work related to social insurance), Taxes (preparation of tax returns for natural and legal persons, tax planning, real estate capital gains tax). The company also offers additional services such as auditing, economic consulting and controlling, management and interim management, but the core activity lies in trust services.

ad audit GmbH 

Trachslau · Since 2006

The core activity of ad audit GmbH is the provision of services in the areas of trust, taxes, finance, and insurance. Specifically, this includes: company formation and consulting, accounting and financial accounting, tax returns and consulting, trust services, insurance consulting and brokerage, and family office services. The company offers these services to both private individuals and companies, positioning itself as a reliable partner for all questions related to finance, taxes, and insurance.

ADB Altorfer Duss & Beilstein AG 

Zurich · Since 1953

The core activity of ADB Altorfer Duss & Beilstein AG is the provision of tax consulting services for private individuals, companies and institutional investors. This includes individual advice on tax-relevant life issues and entrepreneurial decisions, from company formation to succession planning, as well as the preparation of tax returns and tax assessments.

Addforce Services Ltd 

Geneva · Since 1998

The core activity of Addforce Services LTD is the processing of steel slag and the production of environmentally friendly cement aggregates (Ecosand). The company develops and applies technologies to convert steel slag into reusable metals and Ecosand, thereby reducing CO2 emissions. The core activity specifically includes the development and application of the Slag2Green process, which enables the use of steel slag as an alternative raw material in the cement and fertilizer industries.

Adel Treuhand AG 

Erlenbach Zh · Since 2022

The core activity of Adel Treuhand AG is the provision of comprehensive financial services, including accounting, tax consulting, insurance consulting, payroll management, business consulting, and digitalization services for small and medium-sized enterprises as well as private clients.

Ad Equa Sàrl 

Neuchâtel · Since 2016

Adequatio SA 

Matran · Since 2024

Adequatio SA is a fiduciary firm providing bookkeeping and financial reporting, tax services and declarations, payroll and personnel administration, and administrative and business strategy support for companies.

AdExpert GmbH 

Beinwil Am See · Since 2015

AdExpert GmbH provides fiduciary and accounting services, receivables management and debt collection, as well as consulting and administrative outsourcing including property administration, project management and refinancing support.

Adfinas AG 

Frauenfeld · Since 2022

The core activity of Adfinas AG is the provision of services in the field of auditing, accounting and financing. The company offers, among other things, auditing, revision and consulting in finance and accounting. The company's experts are federally certified auditors and revision experts who have gained many years of experience in renowned companies such as PwC Switzerland.