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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryFinance & InsuranceAccountantGlattbruggONE! Treuhand GmbH
ONE! Treuhand GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company's core activity is the provision of services in the field of finance and accounting, particularly in the areas of accounting, tax consulting, payroll accounting and corporate consulting. The company offers its customers comprehensive support and consulting in these areas to support them in managing their business.

AI-generated
Presence

Service area

Offering

Products & services

Industry:Accountant
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4.6/5

ONE! Treuhand GmbH

✓ Offered7
Bookkeeping
Digital financial bookkeeping, annual financial statements, subsidiary ledger accounting, budgeting, key figures analysis, payments, dunning, liquidity planning and VAT reporting.
Payroll accounting
External payroll administration with payroll statements, employment contracts, social insurance, withholding tax, wage statements, onboarding and offboarding, and ongoing HR administration.
Tax advisory for companies
Tax advisory, tax optimization, tax returns, domestic and international tax law, withholding tax, tax planning, objections and representation before authorities.
VAT advisory
Registration with the Swiss Federal Tax Administration (SFTA), VAT returns, input tax deductions, VAT audits, ongoing monitoring, special cases and advice on national and international VAT law.
CFO mandates
External CFO function with financial planning, forecasting, liquidity management, budgeting, controlling, reporting, risk analysis as well as discussions with banks and investors.
Tax advisory for individuals
Personal tax returns, tax planning, tax optimization, withholding tax, objections, retirement provision, special taxes, and advice on real estate, marriage, divorce and retirement.
Taxes for cryptocurrencies
Correct reporting of cryptocurrencies, treatment of trading, staking, mining, NFTs and DeFi, and classification for wealth and income tax.
Trust & reputation

ranQ Trust Score of ONE! Treuhand GmbH: 4.6 out of 5.0

Trust Score4.6/ 5.0

Excellent

x

Data basis 96% · As of November 2026

ONE! Treuhand GmbH scores 92.5 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.92.224%
  • 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.91.110%
  • 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%
ONE! Treuhand GmbH scores 83.0 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%
ONE! Treuhand GmbH scores 86.7 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).86.722%
ONE! Treuhand GmbH scores 74.3 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 35.74.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

ONE! Treuhand GmbH reaches a ranQ Trust Score of 4.6 out of 5.0 — rated «Excellent». The rating draws, among other things, on 5.0 out of 5 stars from 35 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 35 reviews across all connected sources

Sources
GGoogle535
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Europa-Strasse 19
8152 Glattbrugg
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-115.104.850
Founded
2009 · 17 years
Last commercial register change
June 17, 2025
Employees
1 to 10

Active in 1 of 26 cantons

  • ZHZurich
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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