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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryFinance & InsuranceAuditorOltenZ83 AG
Z83 AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Z83 AG provides fiduciary services for businesses, including accounting, payroll, VAT, tax returns and annual financial statements. Its services also include CFO support, tax advisory, auditing and IT consulting for financial processes, ERP systems and integrations.

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Offering

Products & services

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Z83 AG

Accountant
✓ Offered5
Fiduciary Services
Accounting, payroll, VAT returns and tax filings for SMEs and startups; finance and HR processes as well as complete handling of fiduciary services.
CFO Service
Finance know-how available on a needs basis for businesses; support with process optimization, budgeting, succession solutions and restructurings.
Tax Advisory
Comprehensive and strategic tax advisory for businesses and individuals, both nationally and internationally; optimization of the tax burden, support with restructurings and representation before authorities.
Audit / Audits
Reviews to ensure compliance with statutory regulations, with proactive advice and added value for businesses.
IT Consulting
Guidance for startups and growing companies in selecting, building and integrating software solutions, including accounting and ERP systems, POS solutions and payment service providers.
Trust & reputation

ranQ Trust Score of Z83 AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

Z83 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.
x
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%
Z83 AG scores 79.5 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.70.212%
  • 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.82.07%
Z83 AG 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%
Z83 AG scores 37.1 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 35.37.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Z83 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 November 2026.

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

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Location

Hauptgasse 30
4600 Olten

At a glance

Legal form
Corporation
UID
CHE-275.767.374
Founded
2020 · 6 years
Last commercial register change
November 20, 2025
Employees
21 to 50

Active in 1 of 26 cantons

  • SOSolothurn
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.
100.0
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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