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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryFinance & InsuranceFiduciary OfficesFrauenfeldHartmann + Sola Treuhand + Verwaltung AG
Hartmann + Sola Treuhand + Verwaltung AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Hartmann + Sola Treuhand + Verwaltung AG provides fiduciary and administrative services, including financial and payroll accounting, tax preparation and tax advisory, and corporate consultancy. The firm manages residential and commercial properties, handles sales and brokerage, prepares property cost statements, and assists with company formation and estate execution.

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Products & services

Industry:Fiduciary Offices
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Hartmann + Sola Treuhand + Verwaltung AG

4
Bookkeeping
Maintaining financial and operational bookkeeping, monthly, quarterly and annual financial statements, payroll accounting, social security and VAT returns, as well as controlling, reporting and budget advice.
Tax Services
Preparation of tax returns, advice in tax law, advice at year-end with tax implications, tax planning and tax calculations, as well as representation before tax and judicial authorities.
Property management and real estate brokerage
Management of residential and commercial properties, property, heating and operating cost statements, as well as purchase, sale, brokerage and search for building plots.
Business consulting
Company formations, strategy development and business analyses, digital transformation, assessment of organisational structures, as well as operational benchmarking and restructurings.
Trust & reputation

ranQ Trust Score of Hartmann + Sola Treuhand + Verwaltung AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Hartmann + Sola Treuhand + Verwaltung 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.
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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%
Hartmann + Sola Treuhand + Verwaltung AG scores 85.5 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.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%
Hartmann + Sola Treuhand + Verwaltung AG 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%
Hartmann + Sola Treuhand + Verwaltung AG scores 11.1 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 35.11.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Hartmann + Sola Treuhand + Verwaltung 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

General-Weber-Strasse 31
8500 Frauenfeld

At a glance

Legal form
Corporation
UID
CHE-113.457.042
Founded
2007 · 19 years
Last commercial register change
March 27, 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.100.06%
  • 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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