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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryFinance & InsuranceFiduciary OfficesGossau ZhClaudia Costa
Claudia Costa Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of the company "Claudia Costa Buchhaltungen" is the provision of services in the field of finance and accounting, particularly accounting and tax law.

AI-generated
Offering

Products & services

Industry:Fiduciary Offices
✓ Offered8
Organisation and setup of financial and operational bookkeeping
Organisation and setup of financial and operational bookkeeping for new ventures or newly organised accounting, if desired in the office or on site.
Bookkeeping
Managing the complete bookkeeping or parts of it, including accounts receivable, accounts payable and payroll accounting as required.
Payment processing
Recording payments in e-banking for subsequent approval by the clients.
VAT returns
Timely preparation of VAT returns and annual turnover reconciliation.
Annual financial statements
Preparation of the annual financial statements in accordance with the principles of proper accounting, including jointly defined provisions and adjustments.
Monthly payroll statements
Preparation of monthly payroll statements for monthly and hourly wages, as well as provision of a file for upload into e-banking.
Social insurance and withholding tax reporting
AHV and social insurance declarations as well as withholding tax reporting, including review of the invoices.
Tax returns for individuals and legal entities
Filling out tax returns for individuals and legal entities as well as reviewing the tax assessment.
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4.1/5

Claudia Costa

Trust & reputation

ranQ Trust Score of Claudia Costa: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Claudia Costa 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%
Claudia Costa scores 78.5 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.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%
Claudia Costa 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%
Claudia Costa scores 0.3 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 35.0.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Claudia Costa 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

Schlottenbüelstrasse 18
8625 Gossau Zh

At a glance

Legal form
Sole proprietorship
UID
CHE-111.693.985
Founded
2004 · 22 years
Last commercial register change
March 20, 2024
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.
67.0
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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