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

About the company

The core activity of Tiegerman Tax & Advisory GmbH is the provision of tax advisory services, particularly in the field of international tax law, for companies and private asset holders. The services include, among others: International corporate taxation, US tax consulting for individuals and companies, Private wealth planning, Tax structuring for international companies and financial institutions, Tax consulting for M&A transactions, restructurings and insolvencies, Tax compliance and consulting for investment funds, reinsurance companies and start-ups. The company also offers specialized services such as the preparation and review of US tax returns for expatriates and inpatriates.

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Products & services

Industry:Fiduciary Offices
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3.9/5

Tiegerman Tax & Advisory GmbH

✓ Offered4
International Corporate Tax Services
Tax structuring for international businesses and financial institutions, investment fund sponsors and private equity clients; M&A, restructuring and insolvency advice; tax compliance, treaty benefits and transfer pricing.
Individual U.S. Tax Services
Federal and state tax return preparation, FATCA withholding certificates and reporting, relocation planning to or from the U.S., tax authority representation and streamlined compliance procedures.
Private Wealth Planning
International wealth planning, trust, estate and gift tax planning, and succession planning for family businesses across jurisdictions.
Family Office Services
Integrated tax, legal, accounting and reporting support for families and family-owned companies, including cross-border solutions, investment oversight and succession planning.
Trust & reputation

ranQ Trust Score of Tiegerman Tax & Advisory GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Tiegerman Tax & Advisory GmbH scores 70.0 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.67.124%
  • 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.52.910%
  • 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.100.08%
Tiegerman Tax & Advisory GmbH scores 61.5 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.50.012%
  • 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%
Tiegerman Tax & Advisory 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%
Tiegerman Tax & Advisory GmbH scores 17.1 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 35.17.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Tiegerman Tax & Advisory GmbH reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 4.4 out of 5 stars from 7 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
4.4
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle4.47
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Beethovenstrasse 19
8002 Zurich
Opening hours
Mon
08:00 - 18:00
Tue
08:00 - 18:00
Wed
08:00 - 18:00
Thu
08:00 - 18:00
Fri
08:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-223.473.066
Founded
2023 · 3 years
Last commercial register change
September 23, 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.
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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