Fiduciary Offices in
Birsfelden

BSH Treuhand GmbH

Since 2019 · 1–10 empl.·5.0(12)

BSH Treuhand GmbH provides fiduciary services, bookkeeping and tax advisory, and business consulting for private clients and companies.

BSH & Partner Treuhand AG

Since 2021 · 1–10 empl.·5.0(12)

BSH & Partner Treuhand AG provides fiduciary, tax and financial services, including accounting mandates, payroll and personnel administration, VAT (MwST) and QST returns, and annual financial statements. The firm’s services also include tax advice, business consulting, domiciliation services, asset management and support for company formations.

Confiducia AG

Since 2002 · 1–10 empl.·5.0(2)

Confiducia AG provides fiduciary, accounting and tax services as well as payroll administration and audit services. Offerings include financial accounting and annual statements, payroll and social-insurance handling, tax planning and filings, company formations and restructurings, valuations and statutory or voluntary audits (RAB-qualified audit expert noted on the site).

Opcon AG

Since 1992 · 11–20 empl.·5.0(1)

The company's core activity is the provision of services in the areas of trust, tax consulting, financial accounting, personnel administration and legal consulting for companies and private individuals. This includes, among other things, the founding and management of companies, the creation of tax concepts, the management of financial accounting, the administration of wages and salaries, the creation of wills and the execution of estate and bankruptcy administrations.

Lusitania Solutions Sousa Oliveira

Since 2025 · 1–10 empl.

Lusitania Solutions Sousa Oliveira provides administrative, document-related and personal support for the Portuguese- and Portuguese-speaking community in Switzerland. The company assists with forms, translations, taxes, insurance matters and support for returning to Portugal.

Dr. Beat Fuchs Steuerkonsulent

Since 1986 · 1–10 empl.

Inova Treuhand GmbH

Since 1997 · 1–10 empl.

ADMIN AG

Since 2002 · 1–10 empl.

Finanzberatung Hans Ruedi Wilhelm

Since 2006 · 1–10 empl.

ISKRA GmbH

Since 2006 · 1–10 empl.

Mareco GmbH

Since 2007 · 1–10 empl.

Faktura - Service Danny Jung

Since 2025 · 1–10 empl.