Now with job offers for auditors!

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

Fact Sheet Grant Thornton AG

Core Company Information
Company Name Grant Thornton AG
UID CHE-107.841.337
Alternative / previous Names Grant Thornton SA, Grant Thornton Ltd
Bankrevisions- und Treuhand AG, Révision de Banques et Fiduciaire SA, Bank Auditors and Fiduciary Ltd (until 15.07.2014)
Grant Thornton Bankrevision AG, Grant Thornton Bank Audit Ltd., Grant Thornton Révision Bancaire SA (until 24.06.2019)
Grant Thornton Ltd., Grant Thornton Ltd., Grant Thornton SA (until 22.10.2025)
Domicile Zürich
Canton ZH
Legal Form Limited corporation
Inscription Date 25.10.1971
Takeovers: Grant Thornton Advisory AG (CHE-100.726.095), per 24.06.2019
Grant Thornton AG (CHE-109.041.827), per 24.06.2019
Grant Thornton Spiess SA (CHE-102.004.156), per 02.06.2021
GwG Prüfung und Beratung AG (CHE-284.229.555), per 07.03.2025
TEBOR Treuhand AG (CHE-106.237.682), per 18.06.2018
FAOA Information
FAOA ID 500038
RAB Permission state-regulated audit firm
FAOA License active (since 26.11.2007)
Link to FAOA website View auditor profile at FAOA
Branch offices (2) Grant Thornton AG (CHE-394.243.600) in Buchs (SG) (SG)
Grant Thornton AG (CHE-153.284.948) in Genève (GE)
Membership in Associations EXPERTsuisse
IIAS
Number of auditors with permission 48  (13.15 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 7.8 years (max.: 31 years)

Total number of statutory audit clients: 631 (Ranked #11 in Switzerland)

Change in number of audit engagements: +11 (since 31.12.2025), +12 (over the last 12 months)

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

  AG AI AR BE BL BS FR GE GL GR JU LU NE NW OW SG SH SO SZ TG TI UR VD VS ZG ZH ∑
Limited corporation 5 2 1 5 1 16   49 2 17 1 7 8 1 1 32 1 4 21 3 10 1 22 1 116 118 445
Limited liability company 2     1 1 2 2 8   1   4 3 2   3 2   3   2   8   22 22 88
Foundation 1         3   16       2     1 4 1 4 4 1     1   18 29 85
Cooperative           1                           1         1   3
Association       1                                         3 5 9
Special legal forms                                     1               1
∑ 8 2 1 7 2 22 2 73 2 18 1 13 11 3 2 39 4 8 29 5 12 1 31 1 160 174 631

This audit firm is recorded as statutory auditor for 131 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 631 statutory audits are performed by the branch offices as indicated in the table below.

  AG AI AR BE BL BS FR GE GL GR JU LU NE NW OW SG SH SO SZ TG TI UR VD VS ZG ZH ∑
Buchs (SG)               1 2 16 1         22     1 2 1   1   1 2 50
Genève       1   2 2 63         9 1             2   27   6 5 118
Zürich 8 2 1 6 2 20   9   2   13 2 2 2 17 4 8 28 3 9 1 3 1 153 167 463
∑ 8 2 1 7 2 22 2 73 2 18 1 13 11 3 2 39 4 8 29 5 12 1 31 1 160 174 631

Show client list for Buchs (SG), Genève, Zürich.

Related audit firms

Network:

Total number of audit engagements across the network: 632

Further connections:

Latest audit engagements
These are this auditor's latest audit engagements.
 
Client Name Client UID Domicile Start Date Type of switch Auditor Branch
Maven House Brands SA CHE-236.026.535 Neuchâtel 14.10.2026 Auditor switch Genève
The 1916 Company Switzerland SA CHE-472.102.831 Neuchâtel 14.10.2026 Auditor switch Genève
FGB Freizügigkeitsstiftung CHE-169.238.730 Basel 13.10.2026 First auditor Zürich
Obligate AG CHE-379.891.298 Zürich 12.10.2026 First auditor Zürich
Shona Holding GmbH CHE-312.662.126 Luzern 07.10.2026 Auditor switch Zürich
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
Priora Suisse AG CHE-375.145.813 Freienbach 06.10.2026 Auditor switch Zürich
Dr. Risch Ticino SA CHE-111.640.701 Lugano 23.09.2026 Auditor switch Buchs (SG)
Dr. Risch Holding AG CHE-116.379.421 Buchs (SG) 22.09.2026 Auditor switch Buchs (SG)
Dr. Risch Ostschweiz AG CHE-410.034.764 Buchs (SG) 22.09.2026 Auditor switch Buchs (SG)
Dr. Risch Services AG CHE-110.160.479 Buchs (SG) 22.09.2026 Auditor switch Buchs (SG)