Fiduciary Offices in
Altstätten SG

RT Immobilien Treuhand AG

Since 1997 · 11–20 empl.·4.8(70)

RT Immobilien Treuhand AG provides real estate and fiduciary services. Its real estate activities include property purchase and sale, valuation, brokerage, advisory services and property management (rental and condominium administration); its fiduciary services cover company formation, bookkeeping and financial statements, tax and payroll matters, succession and restructuring advice, limited statutory audits and digital accounting solutions.

RT Treuhand AG

Since 2000 · 11–20 empl.·4.8(70)

RT Treuhand AG provides fiduciary services to businesses and private clients, including company formation, accounting with annual financial statements, VAT declarations, payroll and tax advisory. The firm also performs limited audits for SMEs, foundations and associations and supports clients with digital accounting solutions (e.g. Abacus, Bexio, Klara).

Buchhaltungs- und Treuhand AG Altstätten SG

Since 1973 · 11–20 empl.

The core activity of the company "Buchhaltungs- und Treuhand AG" encompasses the provision of services in the following areas: Trust and corporate consulting, Auditing, Tax consulting and planning, Real estate management. The company thus offers a comprehensive range of services for companies, foundations, associations and private individuals in the aforementioned areas.

Rhenum Treuhand AG

Since 1985 · 11–20 empl.·5.0(7)

Rhenum Treuhand AG is an owner-managed fiduciary firm providing accounting and bookkeeping, tax advisory, audit services (statutory and limited audits as an authorized audit expert), controlling, and payroll/HR administration. The firm also offers business consulting and formation, pension and succession planning, and property management.

BGW Treuhand AG

Since 2002 · 1–10 empl.·5.0(3)

The core activity of BGW Treuhand AG is the provision of services in the areas of tax consulting, accounting and financial accounting for individuals and companies. This includes, in particular, the preparation of tax returns, the examination of tax assessments, advice on inheritance matters and support in the founding of companies.

KS Treuhand AG

Since 2003 · 1–10 empl.

KS Treuhand AG provides services in fiduciary administration, tax matters and auditing. The company supports clients with bookkeeping, accounting, tax advisory, audit services and business consulting.

Eugster Treuhand

Since 1992 · 1–10 empl.

The core activity of Eugster Treuhand is the provision of trust and auditing services, in particular: accounting and financial reporting, auditing and revision, tax consulting, property management, and business consulting. The company thus offers comprehensive financial and accounting services for small and medium-sized enterprises (SMEs) as well as private individuals.

ks treuhandexperten ag

Since 1980 · 11–20 empl.·4.2(5)

ks treuhandexperten ag provides fiduciary, tax and audit services. The company also supports clients with bookkeeping, financial reporting, business consulting and audit assignments.

ks revisionsexperten ag

Since 2015 · 1–10 empl.·4.2(5)

ks revisionsexperten ag provides fiduciary, tax and audit services. The company supports clients with bookkeeping, financial reporting, tax matters and corporate advisory, and carries out independent audit services.

Hangartner Treuhand und Unternehmensberatung

Since 1994 · 1–10 empl.·5.0(2)

The core activity of Hangartner Treuhand and Unternehmensberatung is the provision of trust and corporate consulting services, particularly for small and medium-sized enterprises (SMEs) in the canton of Appenzell. The services include accounting and controlling.

TBF Treuhand, Roger Dal Corobbo

Since 2025 · 1–10 empl.

TBF Treuhand, Roger Dal Corobbo provides fiduciary, accounting, tax, and financial advisory services for private individuals and companies. Its services also include business consulting, social insurance advice, and financial planning.

ASR Accounting Services Rohner GmbH

Since 2017 · 1–10 empl.

The core activity of ASR Accounting Services Rohner GmbH is the provision of accounting and financial reporting services.