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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryFinance & InsuranceFiduciary OfficesSissachSonderegger Treuhand AG
Sonderegger Treuhand AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Sonderegger Treuhand AG is the provision of services in the field of administration and trust, particularly in the assumption of tasks such as accounting, tax consulting and other related activities, in order to save customers time, money and stress.

AI-generated
Offering

Products & services

Industry:Fiduciary Offices
✓ Offered7
Bookkeeping
Bookkeeping for SMEs, including ongoing financial accounting and support with administrative processing.
VAT filing
VAT filing for small and medium-sized enterprises, with support for preparing and managing VAT returns.
Payroll administration
Payroll administration for SMEs, including the administrative processing of wages and salaries.
Tax returns and advisory
Tax returns and advisory for SMEs and individuals, with support for tax matters and declarations.
Company formations and conversions
Company formations and conversions, from incorporation to legal restructuring of companies.
Estate division
Estate division with administrative and organizational support for the allocation of inheritances.
AgroOffice bookkeeping support
Support for the bookkeeping software AgroOffice for SMEs, with help using the software.
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4.0/5

Sonderegger Treuhand AG

Trust & reputation

ranQ Trust Score of Sonderegger Treuhand AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Sonderegger Treuhand AG scores 59.9 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.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.88.08%
Sonderegger 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.
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%
Sonderegger Treuhand AG scores 83.3 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).83.322%
Sonderegger Treuhand AG scores 5.7 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 35.5.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Sonderegger Treuhand 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 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

Hauptstrasse 101
4450 Sissach

At a glance

Legal form
Corporation
UID
CHE-107.291.098
Founded
1987 · 39 years
Last commercial register change
March 20, 2017
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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