Auditor in
Mellingen

6 companies in Auditor based in Mellingen — name and year of registration from the commercial register. The list below shows them all.

Companies

All 6 companies in Mellingen

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 #1
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 #2
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 #3
Effida Treuhand und Revisionen AG Logo

Effida Treuhand und Revisionen AG

Since 2014 · 1–10 empl.5.0(1)

Effida Treuhand und Revisionen AG provides auditing, fiduciary and business advisory services. Its services include statutory and special audits, accounting and CFO services, tax and legal advice, and property management, sales and purchases.

AuditorFinancial auditingTrust and advisoryTax and legal
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #4
B&

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

Since 2018 · 1–10 empl.

Auditor
No score yet
CG

Confia Group AG

Since 2018 · 1–10 empl.

Management consultant
No score yet

Auditor in Mellingen

6AuditorCommercial register (Zefix) · as of November 15, 2026
2014Median 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