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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,818 companies indexed · Last updated: today
DirectoryFinance & InsuranceAccountantFrauenfeldaptax AG
aptax AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

aptax AG provides a digital service for preparing tax returns. The company handles document processing, reviews possible deductions, and prepares the filing, with personal support throughout the process.

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3.8/5

aptax AG

Industry:
Accountant
Financial services
Software developer
Online platform
✓ Offered6
Tax return service
Tax returns processed digitally or by post; upload documents, review deductions, approve the result, and handle filing with deadline extension support.
Withholding tax and NOV advisory
Advice on withholding tax, subsequent ordinary assessment and withholding-tax correction; clarifying obligation, application, deadlines, and required documents.
Tax deduction advisory
Review of possible deductions in the tax return, including child allowances, childcare costs, pillar 3a, and other personal deductions based on supporting documents.
Deadline extension service
Application for and tracking of necessary tax return deadline extensions; review of the notice, cantonal authority, and next steps.
Tax portal
Digital platform for documents, uploads, processing status, and collaboration with the team; with personal support and secure transmission.
B2B tax platform
SaaS platform for fiduciaries and tax advisors with document extraction, workflow management, tax return creation, analytics, API access, role controls, and white-label options.
Trust & reputation

ranQ Trust Score of aptax AG: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 54% · As of November 2026

aptax 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%
aptax AG scores 53.4 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.25.012%
  • 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%
aptax 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%
aptax AG scores 40.0 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 35.40.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

aptax AG reaches a ranQ Trust Score of 3.8 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

Hier entsteht die Karte
Zürcherstrasse 242
8500 Frauenfeld

At a glance

Legal form
Corporation
UID
CHE-373.522.862
Founded
2025 · 1 year
Last commercial register change
December 18, 2025
Employees
1 to 10

Active in 1 of 26 cantons

  • TGThurgau
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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