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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryFinance & InsuranceFiduciary OfficesSierreDS Fiduciaire, Duc et Fils SA
DS Fiduciaire, Duc et Fils SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of DS Fiduciaire, Duc & Fils SA consists in providing services in the following areas: 1. Fiduciary (Trusteeship): administrative support for companies, including accounting, tax returns and other administrative tasks. 2. Fiscalité (Tax Consulting): tax consulting and planning for individuals and companies. 3. Immobilier (Real Estate): management of real estate, including management of condominiums, rental and sale of properties. 4. Transmission d'entreprises (Business Succession): consulting and support for the transfer of businesses. The company thus offers a wide range of services tailored to the needs of companies and individuals in the areas of administration, taxes and real estate.

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Offering

Products & services

Industry:Fiduciary Offices
✓ Offered
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3.8/5

DS Fiduciaire, Duc et Fils SA

5
Fiduciary services
Tax representation in Switzerland for foreign companies, complete bookkeeping, payroll management, VAT returns, audit, budgeting and day-to-day administration.
Tax advisory
Tax declarations for individuals and legal entities, tax assessment checks, complaints and appeals, tax planning and optimisation, VAT, inheritances and gifts.
Business transfer
Support with the sale and acquisition of businesses, valuation, due diligence, memorandum, financial and tax optimisation, financing and transaction follow-up.
Property management
Management of rental properties and individual units, online listing, viewings, leases, move-in and move-out inspection reports, terminations, maintenance, rent collection and disputes.
Real estate brokerage
Sale and purchase of real estate, estimation of market value, enhancement, marketing strategy, viewings, notarial deed and handover of keys.
Trust & reputation

ranQ Trust Score of DS Fiduciaire, Duc et Fils SA: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

DS Fiduciaire, Duc et Fils SA scores 50.2 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.31.824%
  • 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.58.610%
  • 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.95.08%
DS Fiduciaire, Duc et Fils SA scores 83.5 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.86.512%
  • 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.70.07%
DS Fiduciaire, Duc et Fils SA 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%
DS Fiduciaire, Duc et Fils SA scores 11.7 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 35.11.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

DS Fiduciaire, Duc et Fils SA reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 2.9 out of 5 stars from 9 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
2.9
of 5

Aggregated from 9 reviews across all connected sources

Sources
GGoogle2.99
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Avenue Général-Guisan 29
3960 Sierre
Opening hours
Mon
07:30 - 12:00, 13:30 - 17:30
Tue
07:30 - 12:00, 13:30 - 17:30
Wed
07:30 - 12:00, 13:30 - 17:30
Thu
07:30 - 12:00, 13:30 - 17:30
Fri
07:30 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-407.512.941
Founded
2016 · 10 years
Last commercial register change
June 1, 2017
Employees
11 to 20
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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