Auditor in the
Canton of Aargau

132 companies in Auditor based in the Canton of Aargau — name and year of registration from the commercial register.

Companies

50 of 132 companies

Trevista Treuhand AG Logo

Trevista Treuhand AG

Since 1991 · 11–20 empl.5.0(39)

Trevista Treuhand AG is a fiduciary and auditing firm. Its services include bookkeeping and financial statements, tax advice, payroll and personnel administration, business consulting, and audits.

AuditorAccountingTax advisoryHuman resources
ranQ Trust Score 4.6 out of 5.0, rated Excellent, Rank #1
APT AG Treuhand + Beratung Logo

APT AG Treuhand + Beratung

Since 1980 · 1–10 empl.4.8(19)

APT AG Treuhand + Beratung is a fiduciary and audit firm. Its services include bookkeeping, tax returns, financial statements, payroll administration, auditing, and business and startup consulting.

AuditorFiduciary servicesBookkeepingTax advisory
ranQ Trust Score 4.3 out of 5.0, rated Very high, Rank #2
Serves AG Logo

Serves AG

Since 1980 · 11–20 empl.4.7(15)

Serves AG provides fiduciary services and business advice, including financial accounting, corporate administration and payroll services. It prepares tax returns and conducts ordinary and limited audits as well as special audits.

AuditorFiduciary servicesTax advisoryAudit
ranQ Trust Score 4.3 out of 5.0, rated Very high, Rank #3
Zehnder Treuhand AG Brugg Logo

Zehnder Treuhand AG Brugg

Since 2021 · 11–20 empl.5.0(15)

Zehnder Treuhand AG Brugg provides fiduciary services to businesses and private individuals. Its services include bookkeeping, tax advice, VAT, personnel and payroll administration, controlling, and business consulting.

AuditorAccountingTaxesHR and Payroll Administration
ranQ Trust Score 4.3 out of 5.0, rated Very high, Rank #4
Meng und Partner Revisions AG Logo

Meng und Partner Revisions AG

Since 1976 · 21–50 empl.5.0(4)

Meng und Partner Revisions AG is a company within the Meng & Partner Group and operates in the field of auditing. The group offers statutory and limited audits, special audits, tax advice, fiduciary services and business consulting.

AuditorFinancial auditingTax advisoryFiduciary services
ranQ Trust Score 4.3 out of 5.0, rated Very high, Rank #5
Meng und Partner AG Baden Logo

Meng und Partner AG Baden

Since 1991 · 21–50 empl.5.0(4)

Meng und Partner AG Baden is a fiduciary and business services firm offering audits, tax advice and business consulting. Its services also include bookkeeping, payroll administration, financial advice and support with business succession.

Management consultantFiduciary servicesTax advisoryAudit services
ranQ Trust Score 4.3 out of 5.0, rated Very high, Rank #6
Dynamis Treuhand AG Logo

Dynamis Treuhand AG

Since 2007 · 1–10 empl.4.4(29)

Dynamis Treuhand AG is a fiduciary and consulting firm serving small businesses, SMEs, non-profit organisations and private individuals. Its services include accounting, payroll and personnel administration, tax advice, business and corporate consulting, audits and succession and estate planning.

Management consultantAccounting & bookkeepingDigital accountingPayroll & personnel administration
ranQ Trust Score 4.3 out of 5.0, rated Very high, Rank #7
Serves Audit AG Logo

Serves Audit AG

Since 2007 · 1–10 empl.4.7(15)

Serves Audit AG provides audit services, including ordinary and limited audits and special examinations. Its services also cover fiduciary work, taxation and business consulting.

Management consultantTrust servicesTaxAudit
ranQ Trust Score 4.3 out of 5.0, rated Very high, Rank #8
K-Vis AG Logo

K-Vis AG

Since 1999 · 11–20 empl.4.8(6)

K-Vis AG is a fiduciary and business advisory firm offering bookkeeping, tax advice, auditing and controlling services. It also advises companies on business matters, valuations and the development of their operations.

Management consultantFiduciary accountingTaxationAuditing
ranQ Trust Score 4.3 out of 5.0, rated Very high, Rank #9
Hüsser Gmür + Partner AG Logo

Hüsser Gmür + Partner AG

Since 1995 · 21–50 empl.5.0(6)

Hüsser Gmür + Partner AG provides fiduciary services, financial and accounting management, auditing, tax advice and business consulting. Its services also include business succession planning and advisory services for public administrations, non-profits and social organisations.

Management consultantTrust services and financial managementAuditingTax advisory
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #10
thv AG Logo

thv AG

Since 1958 · 21–50 empl.5.0(2)

thv AG provides fiduciary services, audits, and business, legal and tax consulting. It serves small and medium-sized enterprises and non-profit organizations.

Management consultantFiduciary servicesBusiness auditingBusiness consulting
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #11
Zehnder Revisions AG Logo

Zehnder Revisions AG

Since 2024 · 11–20 empl.5.0(15)

Zehnder Revisions AG carries out statutory audits as a company-law audit firm and performs audits required by articles of association. Its services include annual financial statement audits and special audits; it is licensed as an audit expert.

AuditorAuditsAccountingTaxes
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #12
Frohsinn Invest AG Logo

Frohsinn Invest AG

Since 2011 · 1–10 empl.5.0(7)

Frohsinn Invest AG provides fiduciary and accounting services, tax consulting, property management, audits and assistance with company formations.

AuditorAccounting and ControllingTax advisoryReal estate
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #13
Welte Treuhand AG Logo

Welte Treuhand AG

Since 1987 · 1–10 empl.4.7(7)

Welte Treuhand AG provides fiduciary services to businesses and individuals. Its services include bookkeeping and financial statements, tax returns and advice, payroll accounting, administrative support, business advice, and assistance with company formation and succession.

AuditorAccountingTax advisoryPayroll accounting
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #14
Frohsinn Wirtschaftsberatungsgesellschaft mbH Logo

Frohsinn Wirtschaftsberatungsgesellschaft mbH

Since 1998 · 1–10 empl.5.0(7)

Frohsinn Wirtschaftsberatungsgesellschaft mbH is a fiduciary firm offering accounting and controlling services, tax advisory, audits, and property management. It provides personalized, holistic fiduciary and advisory services and collaborates with partners to deliver complementary services including support for company formation.

AuditorAccounting and ControllingTax ConsultingAuditing and Financial Audits
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #15
Frohsinn Treuhand GmbH Logo

Frohsinn Treuhand GmbH

Since 2011 · 1–10 empl.5.0(7)

Frohsinn Treuhand GmbH provides fiduciary and accounting services for businesses. Its services include bookkeeping and controlling, tax advisory, property management, audits and company formation; the owner-managed, independent firm primarily serves small and medium-sized enterprises and collaborates with partners.

AuditorAccounting and controllingTax advisoryAudits and financial audits
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #16
DW Treuhand AG Logo

DW Treuhand AG

Since 1995 · 11–20 empl.4.4(7)

DW Treuhand AG is a fiduciary and audit firm serving small and medium-sized businesses, agricultural enterprises, individuals, associations and institutions. Its services include bookkeeping, tax and financial advice, audits, business consulting, retirement planning and external secretariat services.

AuditorFiduciary services for SMEsFiduciary services for agricultural businessesWealth management and retirement planning for private clients
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #17
Peter Haller Treuhand AG Logo

Peter Haller Treuhand AG

Since 1991 · 11–20 empl.4.0(4)

Peter Haller Treuhand AG is a fiduciary and business advisory firm. Its services include business consulting, accounting and financial management, controlling, tax advice and auditing, as well as property management and retirement and estate planning.

AuditorBusiness consultingAccounting and controllingTax consulting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #18
D + J Treuhand AG Logo

D + J Treuhand AG

Since 1958 · 1–10 empl.

D + J Treuhand AG is a fiduciary services firm providing bookkeeping, annual accounts, VAT, tax, audit and payroll services. It also assists with inheritance matters, real estate, financial planning, company formations and business succession.

AuditorAccounting / Financial Statements / VATTaxesAudit
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #19
ORGANISATIONS UND TREUHAND AG Logo

ORGANISATIONS UND TREUHAND AG

Since 1965 · 11–20 empl.5.0(2)

ORGANISATIONS UND TREUHAND AG provides fiduciary and accounting services, tax advice and auditing. Its services also include business, legal and insurance advice, as well as property management and brokerage.

AuditorTrust / AccountingTax advisoryAudit
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #20
Zimmerli Treuhand AG Logo

Zimmerli Treuhand AG

Since 1976 · 1–10 empl.

Zimmerli Treuhand AG provides fiduciary services in financial and accounting matters, including bookkeeping, annual and interim financial statements, and business consulting. Its services also include company formations and conversions, audits, tax returns, VAT matters, and representation in tax proceedings.

AuditorFinance and accountingBusiness consultingAudits
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #21
Bischof & Partner AG, Steuer-, Rechts- und Unternehmensberatung Logo

Bischof & Partner AG, Steuer-, Rechts- und Unternehmensberatung

Since 1980 · 1–10 empl.

Bischof & Partner AG, Steuer-, Rechts- und Unternehmensberatung advises businesses and individuals on tax, legal and business matters. Its services include company formations, conversions, mergers and restructurings, succession planning, accounting, annual financial statements and audits, as well as advice on matrimonial property and inheritance law.

AuditorTax, legal and business consultingIncorporations, conversions, mergers and restructuringsSuccession planning and business acquisitions and sales
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #22
Herzog Treuhand AG Logo

Herzog Treuhand AG

Since 1986 · 11–20 empl.

Herzog Treuhand AG provides fiduciary, bookkeeping, tax and business consulting services, as well as auditing. Its services also include online accounting and support with business succession.

AuditorFiduciary servicesTax adviceAdvisory services
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #23
Higewo Treuhand & Revisions AG Logo

Higewo Treuhand & Revisions AG

Since 1987 · 1–10 empl.

Higewo Treuhand & Revisions AG provides fiduciary, tax advisory, auditing and business consulting services. It supports small and medium-sized businesses with accounting, payroll, year-end financial planning and tax matters, and assists companies from start-up through succession planning.

Management consultantFiduciary servicesTax advisoryAuditing
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #24
SK Treuhand AG Logo

SK Treuhand AG

Since 1989 · 1–10 empl.

SK Treuhand AG provides fiduciary services for businesses and individuals. Its services include bookkeeping and financial statements, audits, tax and business consulting, and asset and property management.

AuditorBookkeepingAuditsTax consulting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #25
Gretz Treuhand AG Logo

Gretz Treuhand AG

Since 1989 · 1–10 empl.

Gretz Treuhand AG provides fiduciary and advisory services to businesses and individuals. Its services include bookkeeping, financial advice, auditing, and tax and business consulting.

AuditorTax advisoryAccounting, financial advisoryAuditing
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #26
OBT AG Logo

OBT AG

Since 1990 · 11–20 empl.

OBT AG provides fiduciary and business consulting services to SMEs, public-sector organisations and other clients. Its services include auditing, tax and legal advice, HR services, IT solutions and business software.

Management consultantTrust and advisoryAudit and assuranceTax and legal advisory
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #27
Consila Treuhand AG Logo

Consila Treuhand AG

Since 1990 · 1–10 empl.

Consila Treuhand AG provides fiduciary and audit services. Its activities include bookkeeping and financial statement support, tax advice, audits, business and legal consulting, personnel administration, and outsourcing of accounting and payroll processes.

Management consultantBookkeeping, Financial StatementsTax AdvisoryFinancial Audit
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #28
Delphin Treuhand AG Logo

Delphin Treuhand AG

Since 1993 · 11–20 empl.

Delphin Treuhand AG provides fiduciary, auditing and business consulting services to SMEs and start-ups. Its services include bookkeeping, payroll and personnel administration, digital financial management, tax advice, accounting, and business and succession planning.

Management consultantBookkeepingPayroll / HRDigital accounting / AbaWeb
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #29
InterComuna AG Logo

InterComuna AG

Since 1994 · 1–10 empl.

InterComuna AG is a service and consulting center for cities and municipalities. According to its website, the company provides services and advice for municipal tasks.

Management consultantService and consulting center for cities and municipalities
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #30
B & S Treuhand AG Logo

B & S Treuhand AG

Since 1994 · 1–10 empl.

B & S Treuhand AG provides fiduciary, tax and business consulting services, as well as auditing. Its services include bookkeeping and payroll accounting, annual financial statements, tax returns, and audits of annual and foundation accounts.

Management consultantFiduciary servicesTax advisoryAuditing
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #31
Karpf Treuhand & Revisions AG Logo

Karpf Treuhand & Revisions AG

Since 1994 · 1–10 empl.

Karpf Treuhand & Revisions AG provides fiduciary services for small and medium-sized businesses. Its services include accounting and financial reporting, payroll and personnel administration, tax advice, and business consulting, including support with company formation, closure and valuations.

AuditorFinance and AccountingTaxationPayroll and HR Services
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #32
Saxer Treuhand AG Baden Logo

Saxer Treuhand AG Baden

Since 1994 · 11–20 empl.

Saxer Treuhand AG Baden advises businesses and individuals on fiduciary, accounting, tax and financial matters. Its services include bookkeeping, payroll and personnel administration, auditing, tax advice and business consulting, including support with company formation, succession and restructuring.

Management consultantFiduciary & bookkeepingTax advisoryAuditing
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #33
Wyss Peter, dipl. Bücherexperte Logo

Wyss Peter, dipl. Bücherexperte

Since 1995 · 1–10 empl.

Wyss Peter, dipl. Bücherexperte is a fiduciary and accounting office serving businesses and private individuals. Its services include bookkeeping, annual financial statements, audits, tax advice and returns, business consulting, and payroll administration.

AuditorFinancial auditBookkeepingAnnual accounts advisory
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #34
Triflex Treuhand AG Logo

Triflex Treuhand AG

Since 1996 · 1–10 empl.

Triflex Treuhand AG provides fiduciary and business advisory services to small and medium-sized enterprises. Its services include bookkeeping, accounting and payroll administration, tax advice, audits, and support with business matters such as company formation, restructuring and succession planning.

Management consultantFiduciary servicesAuditingBusiness consulting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #35
Müller Treuhand & Finanz AG Logo

Müller Treuhand & Finanz AG

Since 1997 · 1–10 empl.

Müller Treuhand & Finanz AG provides fiduciary, accounting and audit services for businesses and individuals. Its services also include tax and business advisory, including support with company formation, restructuring and succession, as well as investment advice and financial planning.

AuditorAccounting and administrationAudit mandatesTax consulting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #36
MG Audit AG Logo

MG Audit AG

Since 1998 · 1–10 empl.

AuditorFiduciary and advisory servicesTax advisoryFinance and accounting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #37
Consida Treuhand GmbH Logo

Consida Treuhand GmbH

Since 1998 · 1–10 empl.

Consida Treuhand GmbH provides fiduciary and tax advisory services. Its activities include bookkeeping, payroll and personnel administration, auditing, company formation, and business and legal advice.

AuditorTrust servicesAccountingCompany formation
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #38
Ernst & Young AG Logo

Ernst & Young AG

Since 1998 · 51–100 empl.

Ernst & Young AG provides audit and assurance services, as well as consulting in strategy, transactions, technology and transformation. Its services also include tax and legal advice.

LawyerFinancial auditingTax advisoryBusiness consulting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #39
ITERA AG Logo

ITERA AG

Since 1999 · 11–20 empl.

ITERA AG provides fiduciary and tax advisory services, as well as services in accounting, controlling, IT, personnel and legal matters. Its activities also include auditing, financial and pension planning, and support with business succession.

AuditorTrust servicesTax advisoryAccounting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #40
KSG Kompetenzzentrum für Städte und Gemeinden AG Logo

KSG Kompetenzzentrum für Städte und Gemeinden AG

Since 2001 · 11–20 empl.

KSG Kompetenzzentrum für Städte und Gemeinden AG provides services to public-sector organizations. Its work includes financial and organizational consulting for municipalities and other public institutions, audits, temporary staff assignments, and support with specialized tasks.

Management consultantConsultingAuditTemporary staff assignments
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #41
Tomamichel Treuhand Logo

Tomamichel Treuhand

Since 2001 · 1–10 empl.

Tomamichel Treuhand provides fiduciary and business advisory services covering bookkeeping, annual accounts, taxation and business management. Its services also include audit and review engagements, support with company formations and succession planning, and advice for businesses and private individuals.

AuditorFiduciary and accounting advisoryAudit and engagement reviewStart-up and succession guidance
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #42
IMS Revision AG Logo

IMS Revision AG

Since 2002 · 1–10 empl.

IMS Revision AG audits the annual financial statements of small and medium-sized businesses and carries out ordinary and limited statutory audits. Its services also include special audits, such as those related to company formation and capital changes, audits of non-profit organisations and consolidated financial statements, and due diligence reviews.

AuditorFinancial auditing
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #43
Acklin & Keusch AG Logo

Acklin & Keusch AG

Since 2002 · 1–10 empl.

Acklin & Keusch AG is a fiduciary and audit firm. Its services include bookkeeping and administration, tax advice, auditing and business consulting, including advice on company formation, restructuring and liquidation.

Management consultantBookkeeping and administrationTax advisoryFinancial auditing
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #44
LB Treuhand AG Logo

LB Treuhand AG

Since 2004 · 11–20 empl.

LB Treuhand AG is a fiduciary, auditing and consulting firm that was taken over by BDO Switzerland as part of a succession arrangement. Its services include fiduciary services, auditing, tax advice and business consulting.

Management consultantFiduciary servicesTax advisoryAuditing
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #45
Ernst Treuhand & Wirtschaftsberatungs AG Logo

Ernst Treuhand & Wirtschaftsberatungs AG

Since 2005 · 1–10 empl.

Ernst Treuhand & Wirtschaftsberatungs AG provides fiduciary and business consulting services to SMEs. Its services include bookkeeping and financial statements, tax advice, auditing and controlling, as well as advice on business formation, strategy, restructuring, finance and succession.

Management consultantBookkeeping and financial statement preparationTax consultingAuditing
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #46
Blunschi Treuhand AG Logo

Blunschi Treuhand AG

Since 2008 · 1–10 empl.

Blunschi Treuhand AG provides fiduciary and business consulting services. Its activities include bookkeeping and annual accounts, auditing, tax advice, controlling, and business, property and general administration.

AuditorAccountingAnnual financial statementsAudit / financial audit
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #47
IMS Treuhand AG Logo

IMS Treuhand AG

Since 2010 · 1–10 empl.

IMS Treuhand AG provides fiduciary, tax and business consulting services. It supports companies, organisations and private individuals with financial, tax-related and business matters.

Management consultantFiduciary servicesTaxesBusiness consulting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #48
MG Treuhand AG Logo

MG Treuhand AG

Since 2010 · 1–10 empl.

MG Treuhand AG provides fiduciary services in consulting, taxation, accounting and auditing. Its services also include property management, administration of rental properties and condominium associations, and lettings.

AuditorFiduciary consultingTax advisoryAccounting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #49
FIGAS Autogewerbe-Treuhand der Schweiz AG Logo

FIGAS Autogewerbe-Treuhand der Schweiz AG

Since 2012 · 11–20 empl.

FIGAS Autogewerbe-Treuhand der Schweiz AG provides fiduciary, audit and consulting services focused on the automotive trade. Its services include accounting, annual financial statements, tax advice, business management support, and assistance with business succession, purchases and sales.

Management consultantTrust ServicesAuditBusiness Consulting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #50

Auditor in the Canton of Aargau

132AuditorCommercial register (Zefix) · as of November 15, 2026
2003Median year of registrationCommercial register (Zefix) · as of November 15, 2026
132in the Canton of AargauCommercial register (Zefix) · as of November 15, 2026
2,530in SwitzerlandCommercial register (Zefix) · as of November 15, 2026
Locations

Auditor in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of November 15, 2026