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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesManagement ConsultingZurichKertesz AG
Kertesz AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The company's core activity is advising and supporting family-owned businesses in professionalizing their management and governance, particularly in setting up supervisory boards, developing family constitutions and planning succession arrangements.

AI-generated
Offering

Products & services

Industry:Management Consulting
✓ Offered4
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4.1/5

Kertesz AG

Family counselling
Family counselling for entrepreneur families, family conversations and family strategy; improve communication, accompany transitions, resolve conflicts and involve the next generation.
Business consulting for family businesses
Business consulting for family businesses, succession planning, leadership and management; professionalisation of structures, capital and finance topics, as well as change management.
Conflict Coaching
Conflict Coaching for executives and employees; clarify perspectives, improve conflict behaviour and develop joint action plans for difficult situations.
Sparring for executives
Sparring for executives and entrepreneurs; critically test ideas and strategies, broaden perspectives and sharpen decisions at the administrative and management level.
Trust & reputation

ranQ Trust Score of Kertesz AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Kertesz AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
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CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Kertesz 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%
Kertesz AG scores 85.0 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).85.022%
Kertesz AG scores 2.3 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 35.2.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Kertesz AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of October 2026.

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

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Location

Seefeldstrasse 56
8008 Zurich

At a glance

Legal form
Corporation
UID
CHE-114.557.516
Founded
2008 · 18 years
Last commercial register change
May 25, 2021
Employees
1 to 10
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

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