Auditor in
Winterthur

ORSINI Treuhand AG

Since 2017 · 11–20 empl.·4.5(66)

ORSINI Treuhand AG is a fiduciary firm serving businesses, organisations and individuals. Its services include financial and payroll accounting, human resources support, tax and business advisory, and auditing.

PRT Revisions & Treuhand AG

Since 1999 · 21–50 empl.·4.0(8)

PRT Revisions & Treuhand AG is a fiduciary and audit firm serving businesses and individuals. Its services include bookkeeping, payroll and personnel administration, tax advice, financial and business consulting, limited audits and special audits.

Conomic GmbH

Since 2019 · 1–10 empl.·5.0(6)

Conomic GmbH is an independent fiduciary services firm providing bookkeeping, tax, payroll and audit services. It also offers business consulting and support with the digitisation and automation of financial processes.

Winco Treuhand AG

Since 2019 · 11–20 empl.·4.8(5)

Winco Treuhand AG provides fiduciary, business consulting and audit services for small and medium-sized enterprises and individuals. Its services include financial and payroll accounting, tax advice, company formations and restructurings, and statutory and special audits.

Consultive Treuhand AG

Since 1974 · 21–50 empl.

Consultive Treuhand AG provides fiduciary services to companies and private individuals. Its services include company formation, finance and accounting, payroll and personnel administration, tax advice, general business consulting, and support with succession planning and restructuring.

Ruedi Niederhauser

Since 1989 · 1–10 empl.

Ruedi Niederhauser provides fiduciary services to SMEs and other organisations. Services include accounting, tax advice and tax returns, auditing and statutory reviews, as well as payroll and social security administration.

WPD Niederhauser

Since 2008 · 1–10 empl.

WPD Niederhauser is a fiduciary firm providing accounting and tax services to SMEs and other organisations. Its services also include auditing, payroll and social security administration, and business consulting.

SRG Schweizerische Revisionsgesellschaft AG

Since 2009 · 1–10 empl.

SRG Schweizerische Revisionsgesellschaft AG provides auditing services and related professional support. Its work includes ordinary and limited audits, reviews of financial statements and internal controls, due diligence, business valuations, and support with accounting standards.

A + B Revisions AG

Since 1982 · 11–20 empl.·5.0(1)

A + B Revisions AG provides fiduciary, accounting and auditing services. Its activities also include tax and inheritance advice, personnel administration and payroll accounting, property management, and business consulting.

Eisele & Partner Treuhand AG

Since 1979 · 11–20 empl.·4.7(3)

Eisele & Partner Treuhand AG provides fiduciary and accounting services and advises businesses and individuals on tax and inheritance matters. Its services also include auditing, business consulting, payroll and personnel administration, and property management.

BDO AG

Since 2024 · 1–10 empl.

BDO AG is an audit, fiduciary and consulting firm. Its services include audit, fiduciary and tax services, legal advice, financial services, business consulting and digital solutions.

PricewaterhouseCoopers AG

Since 1998 · 21–50 empl.·1.0(1)

PricewaterhouseCoopers AG provides audit and assurance, tax and consulting services to public and private organisations. Its services also include deals, legal advice, trust and technology consulting.