Auditor in the
Canton of Solothurn

Emmenegger Fides AG

Since 1992 · 11–20 empl.

Emmenegger Fides AG is a fiduciary and business advisory firm serving companies and individuals. Its services include bookkeeping and financial statement advisory, auditing, tax advice and business consulting, including support with succession planning, financial planning and restructuring.

Schönenberger Paul

Since 1994 · 1–10 empl.

Schönenberger Paul provides fiduciary and advisory services to SMEs, municipalities, foundations and non-profit organisations. Core services include tax advice and planning, bookkeeping, preparation of annual financial statements and audit/revision services. The practice also supports company formation, interim management, VAT accounting and financial controlling.

Sofista Treuhand & Partner AG

Since 1996 · 1–10 empl.

Sofista Treuhand & Partner AG is an independent fiduciary and business services firm. Its services include auditing, tax advice, bookkeeping, financial and business consulting, property management and real estate sales.

Schenker & Partner AG

Since 1999 · 11–20 empl.

Schenker & Partner AG is a fiduciary, auditing and business consulting firm. Its services include accounting and payroll, financial statements, tax advice, audits, business and financial consulting, and support with ERP solutions.

Sofista Treuhand & Partner AG, Zweigniederlassung Oberbuchsiten

Since 1999 · 1–10 empl.

Sofista Treuhand & Partner AG, Zweigniederlassung Oberbuchsiten operates in fiduciary and accounting services. Its services include bookkeeping, tax advice, auditing, property management, business valuations, and advice on business succession or sale.

Forensis Treuhand AG

Since 2001 · 11–20 empl.

Forensis Treuhand AG provides tax, fiduciary, business advisory and audit services. Its services include tax advice for companies and individuals, accounting, payroll and personnel administration, and advice on business formations and restructurings.

leonis Treuhand GmbH

Since 2003 · 1–10 empl.

leonis Treuhand GmbH is a fiduciary services firm serving businesses and private individuals. Its services include accounting, payroll administration, tax and legal advice, auditing, and property management.

Hess Treuhand & Revisions GmbH

Since 2004 · 1–10 empl.

Hess Treuhand & Revisions GmbH provides fiduciary and accounting services for businesses across different industries and of varying sizes. Its services include audits, annual financial statements, payroll and VAT accounting, and tax and business advice.

atrevi GmbH

Since 2005 · 1–10 empl.

atrevi GmbH provides tax and business consulting, fiduciary services, accounting and payroll administration. Its services also include financial accounting and controlling, as well as limited, statutory and engagement-based audits.

Kissling Treuhand GmbH

Since 2005 · 1–10 empl.

Kissling Treuhand GmbH provides fiduciary, audit, tax and business consulting services. Its work includes bookkeeping and financial statements, audits and company valuations, as well as tax planning, succession advice and business restructuring.

Otto Treuhand AG

Since 2006 · 1–10 empl.·4.4(7)

Otto Treuhand AG provides fiduciary services in taxation, accounting and controlling, business consulting, and auditing. Its services include tax returns, financial and payroll accounting, financial planning, support with company formations and restructurings, and business valuations.

SPIEGEL TREUHAND AG

Since 2006 · 1–10 empl.

SPIEGEL TREUHAND AG is a fiduciary services firm providing auditing, business consulting, accounting and tax advisory services. Its work includes supporting SMEs with financial and accounting matters, as well as advising on business succession and pension planning.

PKO Treuhand GmbH

Since 2008 · 1–10 empl.

PKO Treuhand GmbH provides financial and accounting support to municipalities, SMEs, electricity companies, social regions, individuals and non-profit organisations. Its services include audits, fiduciary and business advisory work, tax advice and assistance with VAT matters.

Unico Treuhand Solothurn AG

Since 2009 · 1–10 empl.

Unico Treuhand Solothurn AG provides fiduciary and business advisory services for companies and individuals. Its services include accounting, annual financial statements, financial and tax advice, business consulting, payroll and personnel administration, and audits.

BDO AG

Since 2010 · 1–10 empl.

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

Hubeli Treuhand GmbH

Since 2014 · 1–10 empl.

Hubeli Treuhand GmbH is an independent fiduciary firm providing accounting, tax advisory, auditing and business consulting services. Its work includes financial and payroll accounting, tax returns, annual financial statement audits, and advice on company formation and succession planning.

Rüfenacht Heer Partner AG Zweigniederlassung Grenchen

Since 2019 · 11–20 empl.

Rüfenacht Heer Partner AG Zweigniederlassung Grenchen provides fiduciary, accounting and business advisory services. Its work includes bookkeeping and financial statements, payroll and VAT accounting, statutory audits, tax advice and support with corporate matters.

Z83 AG

Since 2020 · 21–50 empl.

Z83 AG provides fiduciary services for businesses, including accounting, payroll, VAT, tax returns and annual financial statements. Its services also include CFO support, tax advisory, auditing and IT consulting for financial processes, ERP systems and integrations.

ST Schürmann Treuhand AG

Since 2011 · 11–20 empl.·5.0(2)

ST Schürmann Treuhand AG is a fiduciary and accounting firm serving SMEs and public-sector organisations with fiduciary services, audits and consulting. Its services include bookkeeping and payroll accounting, tax and business advice, and statutory and special audits.

Oltreu GmbH

Since 2019 · 1–10 empl.

Oltreu GmbH is a fiduciary and audit firm providing financial audits, bookkeeping, financial statement preparation and advice, and tax services. It also advises businesses and individuals on matters including financial planning, company formation and succession.

Acta-Treuhand AG

Since 1964 · 1–10 empl.·4.0(10)

Acta-Treuhand AG provides fiduciary services in bookkeeping, payroll administration, taxation and auditing. Its services also include business consulting, financial and business plans, and support with company formation, succession planning and business transactions.

Rovedyma Treuhand AG

Since 1991 · 1–10 empl.·5.0(2)

Rovedyma Treuhand AG provides fiduciary and accounting services for SMEs, non-profit organisations and the public sector. Its services include bookkeeping and financial statements, audits, payroll administration, and business and organisational consulting, particularly for non-profits and social institutions.

Grütter Treuhand und Revisions AG

Since 1991 · 1–10 empl.·4.0(4)

Grütter Treuhand und Revisions AG provides fiduciary and audit services for businesses. Its services include bookkeeping, annual financial statements, VAT and tax advice, payroll administration, business consultancy and property management.

CV Treuhand AG

Since 2003 · 11–20 empl.·4.3(6)

CV Treuhand AG provides accounting, tax advisory, personnel administration, business consulting and auditing services. Its work includes financial statements, payroll administration, tax planning, and statutory and limited audits.

Solidis Treuhand AG

Since 1971 · 11–20 empl.·4.0(4)

Solidis Treuhand AG provides fiduciary and business services, including auditing, tax advice and corporate consulting. Its services also cover accounting, personnel administration, outsourcing of administrative tasks and real estate matters.

Rutschi Treuhand GmbH

Since 2014 · 1–10 empl.·5.0(2)

Rutschi Treuhand GmbH provides fiduciary services for small and medium-sized businesses and public-sector organisations. Its services include accounting and payroll administration, audits, tax advice and business consulting, including support with company formation, succession planning and business valuations.

Conz Treuhand AG

Since 1987 · 11–20 empl.·4.0(4)

Conz Treuhand AG provides auditing, tax advisory and accounting services. Its activities also include payroll administration, business consulting and fiduciary services, as well as the management, valuation and brokerage of real estate.

Schärer & Partner Treuhand AG

Since 2000 · 1–10 empl.·3.3(14)

Schärer & Partner Treuhand AG provides fiduciary and advisory services to businesses, public administrations and private individuals. Its services include accounting, tax advice, auditing, business and pension consulting, and property management.

Jorns Treuhand AG

Since 2003 · 1–10 empl.·5.0(2)

The core activity of Jorns Treuhand AG and Jorns Partner Treuhand AG is the provision of services in the areas of accounting, tax consulting and auditing. Specifically, this includes: Accounting: financial and payroll accounting, preparation of interim and annual financial statements, value-added tax declarations, budgeting and financial planning; Tax consulting: tax consulting and planning for companies and individuals, preparation of tax returns, analysis of tax opportunities for optimization and consulting in corporate tax law; Auditing: conducting regular and limited audits, examination of annual accounts and special audits according to the Swiss Code of Obligations (OR).

Rüfenacht Heer Partner AG

Since 1981 · 11–20 empl.·1.0(2)

Rüfenacht Heer Partner AG is a fiduciary and auditing firm. It provides audits, accounting and advisory services, and tax and legal advice for businesses and individuals, including bookkeeping, financial statements, VAT and payroll accounting, and advice on company formation, transactions and succession planning.

GSW Revisions AG

Since 2020 · 21–50 empl.·5.0(1)

GSW Revisions AG provides audit services to small and medium-sized businesses, foundations, associations and individuals. Its services include limited audits, audits of annual financial statements under Swiss GAAP FER, and special and extraordinary audits.

4udit.ch AG

Since 2024 · 1–10 empl.

4udit.ch AG provides an online platform for preparing and carrying out limited audits for Swiss SMEs. A digital assistant guides users through collecting and submitting documents, and the audit team reviews them and completes the audit. The company also offers special audits.

Contas Treuhand AG

Since 2000 · 11–20 empl.·4.0(2)

Contas Treuhand AG provides fiduciary and accounting services, including bookkeeping, financial statements and payroll administration. Its services also include tax advice, audits and business consulting, such as support with company formations, succession planning and financial planning.

Bargetzi Revisions AG

Since 2016 · 1–10 empl.·3.0(2)

Bargetzi Revisions AG conducts limited audits and reviews for legal entities, including companies, foundations and associations. Its audits cover annual financial statements and take account of statutory requirements and the principles of the Swiss accounting profession.

Bonfina Treuhand GmbH

Since 2008 · 1–10 empl.·3.0(2)

Bonfina Treuhand GmbH is an audit and consulting firm serving small and medium-sized businesses. Its services include tax and business advice, bookkeeping and support with financial accounting, as well as outsourced accounting work, company formation, registered office services and board mandates.

Turin Wirtschaftsprüfung GmbH

Since 2026 · 1–10 empl.

Turin Wirtschaftsprüfung GmbH is an independent audit firm. It conducts limited and ordinary audits of annual and consolidated financial statements, as well as special audits, and advises businesses on financial matters including valuations, due diligence, liquidity planning and financing.

Trigon Treuhand Fink GmbH

Since 2018 · 1–10 empl.

Trigon Treuhand Fink GmbH provides fiduciary services for individuals and businesses. Its services include bookkeeping and financial statement support, tax advice, auditing, business consulting, and real estate advice and administration.

Gremaud GmbH

Since 2001 · 1–10 empl.