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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryFinance & InsuranceFiduciary OfficesNeuhausen Am RheinfallTT Tamagni Treuhand GmbH
TT Tamagni Treuhand GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

TT Tamagni Treuhand GmbH provides fiduciary services including accounting, tax advice, payroll administration and limited audits. The firm also offers business consulting, IT support and debt-collection services for SMEs, including cross-border matters between Switzerland and Germany.

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Products & services

Industry:Fiduciary Offices
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4.1/5

TT Tamagni Treuhand GmbH

6
Annual Financial Statements & Accounting
Keeping the financial accounts, preparing VAT statements and annual financial statements, setting up and organizing the accounting, as well as controlling and year-end advisory services.
Tax Advisory
Tax advisory for businesses and private individuals, preparation of tax returns and tax calculations, optimization options, negotiations with tax authorities, as well as VAT filings and representation.
Business Consulting
Advisory services for company formations, drafting articles of association and deeds, qualified formations, conversions and mergers, liquidations, succession planning, budget consulting and business valuations.
Human Resources Administration
Payroll statements and wage payments, wage certificates, registrations and annual declarations with AVS, LPP, LAA, KTG and FAK, as well as employment contracts and personnel regulations.
Limited Audit
Limited audit, audit confirmations, VAT special audits and VAT interim audits for smaller companies.
IT Services & Debt Collection
IT support, payment processing and debt collection, reminder letters and enforcement proceedings to support internal processes and receivables management.
Trust & reputation

ranQ Trust Score of TT Tamagni Treuhand GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 96% · As of October 2026

TT Tamagni Treuhand GmbH scores 68.0 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.76.724%
  • 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.45.610%
  • 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.70.08%
TT Tamagni Treuhand GmbH scores 78.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.89.612%
  • 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%
TT Tamagni 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.
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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%
TT Tamagni Treuhand GmbH scores 17.1 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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

TT Tamagni Treuhand GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 5 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 5 reviews across all connected sources

Sources
GGoogle55
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Brunnenwiesenstrasse 64
8212 Neuhausen Am Rheinfall
Opening hours
Mon
09:00 - 11:00, 14:00 - 17:00
Tue
09:00 - 11:00, 14:00 - 17:00
Wed
09:00 - 11:00, 14:00 - 17:00
Thu
09:00 - 11:00, 14:00 - 17:00
Fri
09:00 - 11:00, 14:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-358.877.677
Founded
2015 · 11 years
Last commercial register change
April 24, 2020
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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