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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryFinance & InsuranceHolding CompaniesBaselATAG Group AG
ATAG Group AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

ATAG Group AG is a family office and private-client services provider for high net worth families and family businesses, offering legal, tax and administrative services. Its services include legal advice and representation, tax planning, corporate services and trust/foundation administration, asset allocation, family governance, art advisory and specialised maritime and aviation consulting.

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Products & services

Industry:Holding Companies
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ATAG Group AG

✓ Offered12
Legal Advisory
Commercial law, tax law, and family and inheritance law; legal planning, transaction support, legal documents, representation in disputes, and international legal assistance.
Tax Advisory
Tax planning and advice for international structures, wills, seat transfers and acquisitions; analysis of tax implications and support in implementation.
Business Administration
Accounting, reporting, fiduciary handling of complex transactions, as well as support for holding structures, international trusts and family offices.
Corporate Service & Administration
Mandate management on boards of directors and foundation boards, management of international holding structures, and operational implementation of client instructions in companies, foundations and administrations.
Trust and Foundation Advisory
Planning, establishment and long-term administration of trusts and foundations; estate planning, structuring and professional administration of these vehicles.
Wealth Allocation
Strategic financial matters to secure family members and achieve financial objectives; independent assessment within the corporate family office framework.
Philanthropy Advisory
Advice and representation for private commitments; alignment with CSR strategies, consideration of values, image aspects and public impact.
Family Governance
Design and implementation of intra-family agreements, rules for leadership and oversight, and strengthening cohesion and family culture across generations.
Family Counselling
Advising families through change, supporting shared goals, accompanying new life phases, education and relocations of residence.
Art Advisory
Art advice based on personal preferences and investment strategy; specialized support in selection and decision-making in the art field.
Maritime Consulting
Advisory on purchase and sale, construction and refitting, ownership and chartering of yachts; including taxes, customs, financing, registration and operations.
Aviation Consulting
Advisory on the purchase and sale of jets as well as on operations, regulations, conditions and other aspects of flight operations.
Trust & reputation

ranQ Trust Score of ATAG Group 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.

ATAG Group 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.
x
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%
ATAG Group 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%
ATAG Group 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%
ATAG Group AG scores 7.4 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 35.7.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

ATAG Group 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

St. Jakobs-Strasse 17
4052 Basel

At a glance

Legal form
Corporation
UID
CHE-115.045.845
Founded
2009 · 17 years
Last commercial register change
August 5, 2025
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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