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Fact Sheet Deloitte AG

Core Company Information
Company Name Deloitte AG
UID CHE-101.377.666
Alternative / previous Names Deloitte SA, Deloitte Ltd
DELOITTE & TOUCHE AG, DELOITTE & TOUCHE SA, DELOITTE & TOUCHE LTD
Deloitte & Touche Experta AG, Deloitte & Touche Experta SA
Experta Revision AG, Experta Revision SA, Experta Revisione SA, Experta Audit Ltd
Domicile Zürich
Canton ZH
Legal Form Limited corporation
Inscription Date 19.01.1984
Website http://www.deloitte.ch
FAOA Information
FAOA ID 500420
RAB Permission state-regulated audit firm
FAOA License active (since 29.11.2007)
Link to FAOA website View auditor profile at FAOA
Branch offices (5) Deloitte AG (CHE-156.952.551) in Basel (BS)  
Deloitte AG (CHE-437.674.867) in Bern (BE)
Deloitte SA (CHE-411.931.790) in Genève (GE)
Deloitte SA (CHE-281.829.115) in Lausanne (VD)
Deloitte AG (CHE-193.020.143) in Lugano (TI)
DELOITTE & TOUCHE AG (CHE-394.391.123) in Bern (BE)
DELOITTE & TOUCHE AG (CHE-348.251.660) in Zug (ZG)
Membership in Associations EXPERTsuisse
Number of auditors with permission 127  (8.91 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 7.8 years (max.: 33.8 years)

Total number of statutory audit clients: 1'132 (Ranked #6 in Switzerland)

Change in number of audit engagements: -4 (since 31.12.2025), +13 (over the last 12 months)

Number of audit clients listed on a Swiss stock exchange: 15 (thereof 1 in the SMI, 1 in the SMI Expanded and 9 in the SPI)

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

  AG BE BL BS FR GE GL GR LU NE NW SG SH SO SZ TG TI UR VD VS ZG ZH ∑
Limited corporation 21 46 25 51 29 115 3 4 28 6 1 9 8 18 17 15 51 9 74 8 140 188 866
Limited liability company 11 4 4 6   19   1 9 7   3 16 3 1 1 1   19 1 36 43 185
Foundation   3   5   27     5 1 1 1 2   1   3   4 1 4 10 68
Cooperative       1                                   1 2
Association       1   2                         3       6
Special legal forms   1       3                           1     5
∑ 32 54 29 64 29 166 3 5 42 14 2 13 26 21 19 16 55 9 100 11 180 242 1'132

This audit firm is recorded as statutory auditor for 1285 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 1'132 statutory audits are performed by the branch offices as indicated in the table below.

  AG BE BL BS FR GE GL GR LU NE NW SG SH SO SZ TG TI UR VD VS ZG ZH ∑
Basel 3 3 8 20   1                 2           10 3 50
Genève       2 4 151     2 2   4     1       38 3 11 7 225
Lausanne   1   2 4 1       7                 50 2 2 3 72
Lugano 1   1         1 1         1     52   1   4 2 64
Zürich 28 50 20 40 21 13 3 4 39 5 2 9 26 20 16 16 3 9 11 6 153 227 721
∑ 32 54 29 64 29 166 3 5 42 14 2 13 26 21 19 16 55 9 100 11 180 242 1'132

Show client list for Basel, Genève, Lausanne, Lugano, Zürich.

Latest audit engagements
These are this auditor's latest audit engagements.
 
Client Name Client UID Domicile Start Date Type of switch Auditor Branch
Ascend Sport Technology AG CHE-403.703.867 Kriens 12.10.2026 Auditor switch Zürich
Infineon Technologies Finance AG CHE-147.751.657 Schaffhausen 12.10.2026 First auditor Zürich
Five Senses Rotkreuz AG CHE-141.633.054 Risch 07.10.2026 First auditor Zürich
M.A. Med Alliance SA CHE-114.307.623 Schaffhausen 06.10.2026 Auditor switch Zürich
Betonpumpen Oberland / Aaretal AG (BOAG) CHE-108.785.316 Wimmis 01.10.2026 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
Restoroute de la Gruyère S.A. CHE-108.033.529 Pont-en-Ogoz 14.10.2026 Auditor switch Zürich
Admicasa Holding AG CHE-414.023.707 Zürich 13.10.2026 Auditor switch Zürich
Biotest (Schweiz) AG CHE-103.863.363 Rupperswil 13.10.2026 Auditor switch Zürich
HC FinCo SA CHE-187.610.678 Lausanne 13.10.2026 Opting-out Lausanne
PERI AG CHE-107.896.574 Seuzach 08.10.2026 Auditor switch Zürich