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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryFinance & InsuranceFiduciary OfficesWinterthurGrossi Treuhand GmbH
Grossi Treuhand GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Grossi Treuhand GmbH is the provision of trust services, particularly in the areas of: accounting, human resources, taxes, administration, law (general, family and inheritance law, Italian law), company formation, and software services. The company positions itself as a competence center for specific customer concerns and offers individual consulting and support.

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Products & services

Industry:Fiduciary Offices
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3.9/5

Grossi Treuhand GmbH

✓ Offered6
Accounting
Plan, set up and maintain financial accounting; post vouchers, handle subsidiary and special ledgers, prepare interim and annual accounts, and file VAT returns.
Payroll and HR Administration
Employee onboarding and exits, employment contracts, references, recruitment, work permits, time tracking, payroll, salary payments, social insurance filings and salary certificates.
Tax Advisory
Advise private and legal entities, complete tax returns, review assessments and bills, support objections and appeals, assess tax consequences and optimise tax burden.
Administrative Support
Flexible assignments during planned or unexpected absences and bottlenecks, including private administration.
Company Formation
Formation of AGs, GmbHs and partnerships with articles, founding deeds, commercial register filings, notary coordination, social insurance registration and start-up advisory.
Legal Advisory
General legal questions, the Switzerland–Italy double taxation treaty, and family, inheritance and adult protection law; contracts, estate planning, wills, advance directives and living wills.
Trust & reputation

ranQ Trust Score of Grossi Treuhand GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Grossi Treuhand GmbH scores 60.4 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.70.08%
Grossi Treuhand GmbH scores 72.3 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.75.012%
  • 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%
Grossi Treuhand GmbH 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%
Grossi Treuhand GmbH scores 1.4 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 35.1.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Grossi Treuhand GmbH 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 2 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 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Wülflingerstrasse 258
8408 Winterthur
Opening hours
Mon
08:00 - 12:30, 13:30 - 18:00
Tue
08:00 - 12:30, 13:30 - 18:00
Wed
08:00 - 12:30, 13:30 - 18:00
Thu
08:00 - 12:30, 13:30 - 18:00
Fri
Closed
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-196.738.550
Founded
2019 · 7 years
Last commercial register change
April 29, 2019
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.
88.0
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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