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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryFinance & InsuranceFiduciary OfficesAu SgTanner Treuhand und Beratung GmbH
Tanner Treuhand und Beratung GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Tanner Treuhand und Beratung GmbH provides fiduciary and advisory services, including accounting and financial reporting, tax consulting, statutory and limited audits, business advisory, property management and estate matters.

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Offering

Products & services

Industry:Fiduciary Offices
✓ Offered
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Tanner Treuhand und Beratung GmbH

6
Finance and accounting
Financial bookkeeping, accounts receivable/accounts payable accounting, payroll accounting and personnel administration, VAT returns, closing advice, interim reporting, budgeting and financial planning, static analyses and key figures.
Tax consulting
Tax returns for individuals and legal entities, tax consulting and tax planning, tax burden comparisons, representation before tax authorities, special taxes, withholding tax and VAT.
Audits
Review of formation reports, audit of annual financial statements under limited audit, review of the option to opt out.
Business consulting
Advisory services and execution for new incorporations, conversions and liquidation, succession planning.
Inheritance matters
Assistance with wills and other testamentary dispositions, advice on inheritance shares and compulsory portions, executor mandates, inheritance contracts, deposit of the will, administration of the estate partition.
Real estate management
Advice on succession, rights of residence, usufruct, tax optimization, easements and land charges, and different forms of ownership.
Trust & reputation

ranQ Trust Score of Tanner Treuhand und Beratung GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

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Data basis 54% · As of October 2026

Tanner Treuhand und Beratung GmbH 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.
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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%
Tanner Treuhand und Beratung GmbH scores 72.3 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.75.012%
  • 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%
Tanner Treuhand und Beratung GmbH scores 83.3 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).83.322%
Tanner Treuhand und Beratung GmbH scores 1.4 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 35.1.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Tanner Treuhand und Beratung GmbH reaches a ranQ Trust Score of 4.0 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

Kirchweg 2
9434 Au Sg

At a glance

Legal form
Limited Liability Company
UID
CHE-250.632.479
Founded
2019 · 7 years
Last commercial register change
September 27, 2023
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.88.06%
  • 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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