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 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  (8.77 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 7.9 years (max.: 34.1 years)

Total number of statutory audit clients: 1'114 (Ranked #6 in Switzerland)

Change in number of audit engagements: -22 (since 31.12.2025), +5 (over the last 12 months)

Number of audit clients listed on a Swiss stock exchange: 17 (thereof 1 in the SMI, 1 in the SMI Expanded and 10 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 22 37 24 51 29 114 3 4 15 7 1 9 5 14 17 15 54 9 75 8 139 193 845
Limited liability company 11 4 4 6   19   1 9 7   3 16 3 1 1 1   19 1 36 44 186
Foundation   2   5   29     5 1 1 1 2   1 1 3   4 1 3 10 69
Cooperative       1                                   1 2
Association       1   2                         3       6
Special legal forms   1       4                           1     6
∑ 33 44 28 64 29 168 3 5 29 15 2 13 23 17 19 17 58 9 101 11 178 248 1'114

This audit firm is recorded as statutory auditor for 1282 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 1'114 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 4 154     2 3   4     1       38 3 11 7 229
Lausanne   1   2 4 1       7                 52 2 2 3 74
Lugano 1   1         1 1         1     55   1   4 2 67
Zürich 29 40 19 40 21 12 3 4 26 5 2 9 23 16 16 17 3 9 10 6 151 233 694
∑ 33 44 28 64 29 168 3 5 29 15 2 13 23 17 19 17 58 9 101 11 178 248 1'114

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
APPEL DE GENEVE / GENEVA CALL CHE-112.176.215 Genève 13.08.2026 Auditor switch Genève
Neural Concept SA CHE-213.105.804 Ecublens (VD) 11.08.2026 Auditor switch Lausanne
Osterwalder Immobilien Zürich AG CHE-100.262.279 Zürich 11.08.2026 Auditor switch Zürich
BEYOND Accommodation Bureau AG CHE-222.763.202 Zürich 10.08.2026 First auditor Zürich
CBH Compagnie Bancaire Helvétique SA CHE-107.993.131 Genève 10.08.2026 Auditor switch Genève
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
PGI S.A. CHE-101.987.327 Lausanne 12.08.2026 Auditor switch Lausanne
Teoxane Ceuticals SA CHE-114.890.370 Genève 30.07.2026 Auditor switch Genève
Teoxane SA CHE-110.245.638 Genève 30.07.2026 Auditor switch Genève
MMG Swiss Finance AG CHE-238.436.507 Schaffhausen 17.07.2026 Auditor switch Basel
Synchrony Asset Management SA CHE-106.791.122 Genève 15.07.2026 Auditor switch Zürich