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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryFinance & InsuranceFiduciary OfficesZurichBlum Verwaltungs- und Treuhand AG
Blum Verwaltungs- und Treuhand AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Blum Verwaltungs- & Treuhand AG is the provision of services in the field of corporate and tax consulting, particularly in the establishment, management and brokerage of joint-stock companies (AG) in Switzerland, including domiciliary services, taxes and accounting.

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Products & services

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3.9/5

Blum Verwaltungs- und Treuhand AG

✓ Offered5
Formation and purchase/sale of public limited companies
Forming, buying and selling public limited companies; advice on Swiss AGs and shelf companies, including support during the company change.
Taxation and accounting
Tax advisory and accounting for businesses and individuals, tax planning, tax returns, withholding tax and VAT reports, payroll accounting and financial statements.
Domiciliation service
Domicile addresses in several Swiss cantons, with mail receipt, sorting, forwarding and telephone service.
Placement of board members
Placement of board members, including as silent directors for anonymity or when residing abroad.
Business and tax advisory
Advice on business management, administration of tax-privileged companies, general business consulting and company formation.
Trust & reputation

ranQ Trust Score of Blum Verwaltungs- und Treuhand AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

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Data basis 96% · As of October 2026

Blum Verwaltungs- und Treuhand AG scores 49.8 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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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.68.224%
  • 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.17.610%
  • 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.35.08%
Blum Verwaltungs- und Treuhand AG scores 85.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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%
Blum Verwaltungs- und Treuhand AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Blum Verwaltungs- und Treuhand AG scores 20.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.20.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Blum Verwaltungs- und Treuhand AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Löwenstrasse 20
8001 Zurich

At a glance

Legal form
Corporation
UID
CHE-107.899.905
Founded
1976 · 50 years
Last commercial register change
October 20, 2020
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.100.06%
  • 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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