Fiduciary Offices in
Olten

37 companies in Fiduciary Offices based in Olten — name and year of registration from the commercial register. The list below shows them all.

Companies

All 37 companies in Olten

Bussmann & Frey AG Logo

Bussmann & Frey AG

Since 1999 · 11–20 empl.4.9(9)

The core activity of Bussmann & Frey AG encompasses two main areas: 1. **Trust Services**: The company provides trust services, including accounting, financial statement consulting, tax consulting, and general business consulting. 2. **Real Estate**: Bussmann & Frey AG is also active in the real estate sector, offering services such as brokerage and sale of properties, traffic value appraisals, management of rental properties, renting and buying of properties.

Fiduciary OfficesReal estate brokerageProperty managementValuation of market value
ranQ Trust Score 4.3 out of 5.0, rated Very high, Rank #1
Gribi & Partner AG Logo

Gribi & Partner AG

Since 1990 · 11–20 empl.4.3(6)

The core activity of Gribi & Partner AG is the provision of consulting services for companies and private individuals in the areas of tax consulting, auditing, trust and corporate consulting, international succession planning, company valuation and value-added tax consulting as well as fiscal representation.

Fiduciary OfficesTax advisoryAuditFiduciary & business consulting
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #2
emas Treuhand GmbH Logo

emas Treuhand GmbH

Since 2021 · 1–10 empl.5.0(11)

The core activity of emas Treuhand GmbH is the provision of services in the field of trust services, particularly in the areas of: * Accounting: assumption of accounting tasks for companies and private individuals * Taxes: handling of tax matters, including the preparation of tax returns * Auditing: conducting audits and examinations of companies * Consulting: advising companies and private individuals in all areas of trust services and finance The company thus offers comprehensive services in the field of financial management and consulting.

Fiduciary OfficesBookkeepingTaxesFinancial Audit
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #3
HTO Treuhand AG Logo

HTO Treuhand AG

Since 1980 · 11–20 empl.

The core activity of HTO Treuhand AG is the provision of services in the field of trust services, particularly in the areas of corporate consulting, tax consulting, accounting, auditing, and administrative tasks. The company offers these services to both small and medium-sized enterprises (SMEs) and private individuals. The core activity thus encompasses comprehensive support and consulting for clients in all matters related to trust services, business economics, and tax law.

Fiduciary OfficesBusiness consultingTax consultingBookkeeping and accounting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #4
TRESO Treuhand AG Logo

TRESO Treuhand AG

Since 1990 · 11–20 empl.

The core activity of TRESO Treuhand AG is the provision of services in the fields of trust, accounting, and taxation, as well as auditing. Specifically, this includes: trust services, including merger and acquisition consulting, inheritance law and estate administration, company formation, purchase and sale, and succession planning; tax consulting, both nationally and internationally, withholding tax declarations, VAT consulting and declarations, as well as VAT representation for foreign companies; accounting services, including payroll and personnel administration, outsourcing of accounting, and consulting on financial statement preparation; and auditing, including annual financial statement audits, voluntary audits, special audits, and formation/conversion audits.

Fiduciary OfficesTrust servicesAuditsTax services
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #5
Emmenegger Fides AG Logo

Emmenegger Fides AG

Since 1992 · 11–20 empl.

The core activity of Emmenegger Fides AG is the provision of services in the following areas: accounting and financial reporting, auditing, tax consulting, and business consulting. The company acts as a trust specialist and provides its clients with individual advice and support in these areas, helping them to achieve their entrepreneurial and economic goals.

Fiduciary OfficesBookkeeping and closing adviceAuditingTax advisory
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #6
Forensis Treuhand AG Logo

Forensis Treuhand AG

Since 2001 · 11–20 empl.

The core activity of Forensis Treuhand AG encompasses the provision of services in the areas of tax consulting, trust services, business consulting, and auditing. Specifically, the company offers the following services: tax consulting for companies and individuals, including tax planning, tax deductions, and representation before tax authorities; trust services, such as accounting, personnel and payroll management, as well as representation; business consulting, including succession planning, mergers and acquisitions, and real estate consulting; and auditing, including the review and examination of companies. The company offers its services both nationally and internationally and has branches in Olten and Zurich.

Fiduciary OfficesTax advisoryFiduciary servicesBusiness consulting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #7
SCHAFER Dienste GmbH Logo

SCHAFER Dienste GmbH

Since 2006 · 1–10 empl.

SCHAFER Dienste GmbH is not described on the website as a separate company. The website presents the Arbeitskontrollstelle Kanton Solothurn and its activities in labour-market inspections, monitoring wage and working conditions, and reporting suspected violations such as undeclared work.

Fiduciary OfficesLabour market inspectionsReporting undeclared workReporting permit-required employment
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #8
adlatus Logo

adlatus

Since 2007 · 11–20 empl.

The company adlatus offers business consulting services, particularly for small and medium-sized enterprises (SMEs). The core activities include: Interim Management: adlatus provides experienced managers who can support companies on a temporary basis to fill personnel gaps or overcome specific challenges. Business Consulting: The company offers consulting services in various areas such as finance, taxes, marketing, sales, and succession planning. Coaching: adlatus provides coaching services to support companies in developing and implementing strategies. Startup Consulting: The company offers specific consulting services for startups to support them in overcoming challenges and developing strategies. Overall, adlatus focuses on providing experienced consultants and managers who can support companies in solving challenges and achieving their goals.

Fiduciary OfficesBusiness consulting for SMEsExecutive coachingSuccession planning
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #9
Hubeli Treuhand GmbH Logo

Hubeli Treuhand GmbH

Since 2014 · 1–10 empl.

Hubeli Treuhand GmbH provides fiduciary and advisory services for businesses and private clients, including accounting, payroll, cross-border employment matters, tax consulting, VAT services and statutory audits. The firm also offers business advisory services such as company formation, financing advice, restructurings, valuations, due diligence and preparation of financial and business plans.

Fiduciary OfficesFiduciary servicesTax advisoryAuditing
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #10
Z83 AG Logo

Z83 AG

Since 2020 · 21–50 empl.

The core activity of Z83 is to provide trust and CFO services to digital companies, particularly startups and SMEs. This includes, among other things: accounting and payroll processing, VAT returns and tax returns, CFO-as-a-Service (CFOaaS) with proactive consulting and support on financial topics such as process optimization, budgeting and succession solutions, and audits and inspections to ensure compliance with legal regulations. The company supports its customers in processing financial and HR processes, enabling them to have more time for their entrepreneurial goals and dreams.

Fiduciary OfficesFiduciary ServicesCFO ServiceTax Advisory
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #11
KANZLEI ULF BROSOWSKI Logo

KANZLEI ULF BROSOWSKI

Since 2011 · 1–10 empl.

The core activity of the company is legal advice and representation, as it is a law firm.

Law Firms & Notary Offices
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #12
Otto Treuhand AG Logo

Otto Treuhand AG

Since 2006 · 1–10 empl.4.4(7)

The core activity of Otto Treuhand AG is the provision of trust services, particularly in the areas of taxes, accounting and controlling, corporate consulting and auditing.

Fiduciary OfficesAccounting and controllingTaxesBusiness consulting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #13
LangSys GmbH Logo

LangSys GmbH

Since 2018 · 1–10 empl.

The core activity of LangSys GmbH is consulting European companies on entering the Chinese market and interacting with Chinese partners, particularly in identifying business potential and providing strategic support.

Fiduciary OfficesConsulting for European-Chinese BusinessesValue chain analysis and optimisation
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #14
Acta-Treuhand AG Logo

Acta-Treuhand AG

Since 1964 · 1–10 empl.4.0(10)

The core activity of Acta-Treuhand AG is the provision of trust services, particularly in the areas of: * Accounting and financial reporting * Tax consulting and tax returns * Payroll and personnel administration * Auditing and revision * Consulting and optimization of business processes and workflows Thus, the company offers comprehensive services for companies and individuals in the areas of finance, taxes, and accounting.

Fiduciary OfficesAccountingAdvisoryTaxes
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #15
Oltreu GmbH Logo

Oltreu GmbH

Since 2019 · 1–10 empl.

The core activity of Oltreu GmbH is the provision of services in the areas of auditing, corporate consulting, accounting, financial reporting and taxation.

Fiduciary OfficesAudit and AssuranceBusiness ConsultingAccounting Services
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #16
Carlino Trust Logo

Carlino Trust

Since 2020 · 1–10 empl.5.0(6)

The core activity of Carlino Trust is the provision of services in the field of financial and tax consulting, including: accounting and payroll accounting for legal entities and sole proprietorships; tax consulting for legal and natural persons, including value-added tax, withholding tax and federal tax; financial consulting, including examination of operational accounting, advice on financial reporting and budget planning; international trade and tax agreements, including consulting for legal entities and sole proprietorships; and legal consulting, including obligations law, civil legislation, debt and bankruptcy law and federal constitution. The company also offers personal consulting and support for customers in these areas.

Fiduciary OfficesBookkeepingTax advisoryTax Care membership
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #17
Solidis Treuhand AG Logo

Solidis Treuhand AG

Since 1971 · 11–20 empl.4.0(4)

Solidis Treuhand AG provides auditing, tax and fiduciary/business services. It serves SMEs, pension funds, municipalities, non-profit organisations and private clients, offering accounting, tax advice, audits and outsourcing solutions.

Fiduciary OfficesFiduciary servicesTax advisoryAuditing
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #18
Avida Immobilien-Treuhand AG Logo

Avida Immobilien-Treuhand AG

Since 1990 · 11–20 empl.3.4(83)

Avida Immobilien-Treuhand AG is a real estate services firm offering property management and administration for rental properties and condominium ownership, together with brokerage and sales, property valuation (market-value reports) and real-estate photography. The company serves private and commercial clients and provides full or partial mandates for administrative and technical property management.

Fiduciary OfficesProperty managementMarketing and initial leasing of propertiesProperty brokerage and sale
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #19
Conz Treuhand AG Logo

Conz Treuhand AG

Since 1987 · 11–20 empl.4.0(4)

The core activity of Conz Treuhand AG is the provision of trust services, particularly in the areas of auditing, tax consulting, accounting, business consulting, and property management. The company supports and relieves its clients in these areas, enabling them to focus on their core business.

Fiduciary OfficesFinancial AuditingTax ConsultingAccounting
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #20
BaselLegal GmbH Zweigniederlassung Olten Logo

BaselLegal GmbH Zweigniederlassung Olten

Since 2025 · 1–10 empl.

BaselLegal GmbH Zweigniederlassung Olten is a law firm focused on pension law. It advises and represents pension funds, employers and private individuals, with particular work in occupational pension matters, foundations and tax law.

Law Firms & Notary OfficesOccupational Pensions Law AdviceTax Law Advice
ranQ Trust Score 3.6 out of 5.0, rated Solid, Rank #21
KUB International AG Logo

KUB International AG

Since 2009 · 1–10 empl.

The core activity of KUB International AG includes providing services and consulting in the fields of economy, technology, trust management, asset investments and finance. This also includes domiciliation and founding consulting.

Fiduciary OfficesBusiness consultingBusiness & technology advisoryBusiness domiciliation
No score yet
Richard Finance GmbH Logo

Richard Finance GmbH

Since 2026 · 1–10 empl.

Richard Finance GmbH provides independent advice on insurance, finance and taxes. The company compares offers from different insurers, reviews benefits and premiums, and supports clients in selecting and implementing suitable solutions.

Fiduciary OfficesInsurance AdvisoryFinancial AdvisoryTax Advisory
No score yet
PK

PVM Konzept AG

Since 1973 · 1–10 empl.

Fiduciary Offices
No score yet
RI

Reize Immobilien AG

Since 1977 · 1–10 empl.

Fiduciary Offices
No score yet
VA

Veto AG

Since 1978 · 1–10 empl.

Fiduciary Offices
No score yet
TU

Treuhand und Revisionen Bruno Gervasoni Dipl. Buchhalter/Controller

Since 1987 · 1–10 empl.

Fiduciary Offices
No score yet
MH

Marc Hert Consulting

Since 1987 · 1–10 empl.

Fiduciary Offices
No score yet
GA

GeRoGestions AG

Since 1990 · 1–10 empl.

Fiduciary Offices
No score yet
AG

AB GmbH

Since 2001 · 1–10 empl.

Fiduciary Offices
No score yet
RG

ReviCare GmbH

Since 2001 · 1–10 empl.

Fiduciary Offices
No score yet
IA

ImmoOlten AG

Since 2005 · 1–10 empl.

Fiduciary Offices
No score yet
CG

calmida gmbh

Since 2007 · 1–10 empl.

Fiduciary Offices
No score yet
HI

Hübeli Immo AG

Since 2010 · 1–10 empl.

Management Consulting
No score yet
AT

ASIMO Treuhand AG

Since 2020 · 1–10 empl.

Fiduciary Offices
No score yet
IA

Immokreis AG

Since 2023 · 1–10 empl.

Fiduciary Offices
No score yet
AT

Aureum Treuhand & Interim Management GmbH

Since 2024 · 1–10 empl.

Fiduciary Offices
No score yet

Fiduciary Offices in Olten

37Fiduciary OfficesCommercial register (Zefix) · as of October 10, 2026
2005Median year of registrationCommercial register (Zefix) · as of October 10, 2026
364in the Canton of SolothurnCommercial register (Zefix) · as of October 10, 2026
17,182in SwitzerlandCommercial register (Zefix) · as of October 10, 2026
Locations

Fiduciary Offices in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of October 10, 2026