Get detailed statistics about any audit firm in Switzerland. Just type the auditor name in the field below and off you go!

Fact Sheet PRT Revisions & Treuhand AG

Core Company Information
Company Name PRT Revisions & Treuhand AG
UID CHE-105.269.596
Alternative / previous Names -
Domicile Winterthur
Canton ZH
Legal Form Limited corporation
Inscription Date 28.10.1999
Takeovers: PRT Pauli & Rechsteiner Treuhand AG in Liquidation (ADM-491.286.401), per 11.09.2001
FAOA Information
FAOA ID 502578
RAB Permission licensed audit expert
FAOA License active (since 03.04.2008)
Link to FAOA website View auditor profile at FAOA
Branch offices (1) PRT Revisions & Treuhand AG (CHE-439.875.773) in Gossau (SG) (SG)
Membership in Associations TREUHAND|SUISSE
Number of auditors with permission 4  (16.00 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 11.6 years (max.: 30.4 years)

Total number of statutory audit engagements: 64 (Ranked #139 in Switzerland)

Change in number of audit engagements: +2 (since 31.12.2024), +3 (over the last 12 months)

Details regarding the distribution of the audit engagements across legal forms and cantons are depicted in the table below.

  Basel Stadt Schwyz Thurgau Zürich
Limited corporation   1 5 36 42
Limited liability company     1 13 14
Foundation 1     4 5
Cooperative 1     1 2
Association       1 1
2 1 6 55 64

This audit firm is recorded as statutory auditor for 28 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 64 statutory audits are performed by the branch offices as indicated in the table below.

  Basel Stadt Schwyz Thurgau Zürich
Gossau (SG)       1 1
Winterthur 2 1 6 54 63
2 1 6 55 64

Show client list for Gossau (SG), Winterthur.

Related audit firms

Same domicile: 

Latest audit engagements
These are this auditor's latest audit engagements.
 
Client Name Client UID Domicile Start Date Type of switch Auditor Branch
Herrmann Partner AG CHE-265.093.835 Andelfingen 16.05.2025 First auditor Winterthur
HF-CARBON AG CHE-204.684.303 Frauenfeld 07.02.2025 First auditor Winterthur
Heusser Feuer & Keramik AG CHE-165.991.739 Winterthur 20.01.2025 First auditor Winterthur
Kita Zwerglihuus im Rosenberg GmbH CHE-395.408.424 Winterthur 09.01.2025 First auditor Gossau (SG)
Kqira GmbH CHE-110.232.825 Winterthur 12.12.2024 Auditor switch Winterthur
Discontinued audit engagements
The following audit engagements were lost recently, either to a competitor, due to auditor resignation or due to an opting out.
 
Client Name Client UID Domicile End Date Reason Auditor Branch
LESE Beauty AG CHE-261.630.740 St. Gallen 06.05.2025 Discontinued Winterthur
deBeck GmbH CHE-401.882.859 Winterthur 17.09.2024 Discontinued Winterthur
Cleantec AG CHE-100.294.842 Nürensdorf 19.03.2024 Opting-out Winterthur
Beemerging GmbH CHE-112.245.514 Winterthur 19.12.2023 Opting-out Winterthur
Filiti & Multari Immobilien AG CHE-292.374.745 Winterthur 26.07.2023 Opting-out Winterthur