ranQ
ranQ
ranQ
DirectoryIndustriesPlacesKnowledgeComparisonsSoon
Sign inCheck visibility
ranQHSG Startup LabelRecognised by the
HSG Startup Label

The leading AI company directory, built to boost AI visibility.

DEENFRIT
Product
  • Pricing
  • Directory
  • Industries
  • Trust Score
Company
  • About
  • Partner program
  • Contact
  • Legal
© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesManagement consultantHombrechtikonKoster Consulting AG
Koster Consulting AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Koster Consulting AG provides business consulting, audits, fiduciary and accounting services, and tax advice. Its services also include business restructuring, payroll accounting, and support with company formation and succession planning.

AI-generated
Presence

Service area

Offering

Products & services

Industry:Management consultantAuditor
LeadhubOutbound Leads by COHAGA

Looking for direct email addresses and phone numbers?

Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.

Discover Leadhub
4.0/5

Koster Consulting AG

Accountant
✓ Offered5
Business consulting
Company formations, financing transactions, business analyses and key performance indicator comparisons, business valuations, succession arrangements, restructurings, company sales and advice on matrimonial property and inheritance law.
Auditing
Ordinary and limited audits, special audits under company law, incorporation audits as well as merger legislation audits, including audits related to capital increases, capital reductions and in-kind contributions.
Trust services / Bookkeeping
Management of clients’ and payroll bookkeeping, accounting support, HR administration, year-end advisory, VAT returns, and executor mandates and estate settlement arrangements.
Tax advisory
Preparation of tax returns, advice for individuals and legal entities, long-term tax planning, optimisation of the tax burden, negotiations with tax authorities and VAT advice.
Property rehabilitation
Assessment of rehabilitation viability, development of rehabilitation measures, support during implementation and negotiation with capital providers.
Trust & reputation

ranQ Trust Score of Koster Consulting AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of November 2026

Koster Consulting AG scores 62.0 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.70.824%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.27.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.78.08%
Koster Consulting AG scores 85.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Koster Consulting AG scores 86.7 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).86.722%
Koster Consulting AG scores 0.3 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.0.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Koster Consulting AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

No knowledge articles yet

Once Koster Consulting AG has claimed this profile, we'll publish editorial articles and case studies here together.

Get started
Comparisons

Koster Consulting AG in comparison

Soon

Industry comparisons are coming soon

We're preparing industry comparisons that rank Koster Consulting AG by reviews, experience and specialisations.

Is this your company?

Claim the company profile of Koster Consulting AG to make its contact details visible. With a plan we additionally create and publish industry comparisons, articles and much more.

Secure profile

Location

Eichtalstrasse 54
8634 Hombrechtikon
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-104.890.782
Founded
1998 · 28 years
Last commercial register change
May 12, 2020
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • ZHHombrechtikon
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

    Similar companies

    GT
    ggm Treuhand AG
    Küsnacht Zh
    HT
    Heeg Treuhand GmbH
    Zollikerberg
    SG
    Suter-Arnold GmbH
    Zurich
    RC
    Rocum Consulting AG
    Zurich
    2G
    2solve GmbH
    Zurich
    BF
    Bertschi Finance
    Altikon
    DN
    Dr. Nabholz Treuhand AG
    Zurich
    BV
    Blum Verwaltungs- und Treuhand AG
    Zurich