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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 123  (9.20 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 7.7 years (max.: 33.6 years)

Total number of statutory audit clients: 1'131 (Ranked #6 in Switzerland)

Change in number of audit engagements: -5 (since 31.12.2025), +16 (over the last 12 months)

Number of audit clients listed on a Swiss stock exchange: 16 (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 35 22 53 31 112 3 4 18 9 2 12 6 14 18 15 55 8 77 9 140 197 861
Limited liability company 11 4 4 6   17   1 8 9   3 20 3 2 1 2   20 1 35 43 190
Foundation   1   5   29     4 1 1 1 2   1 1 3   4 1 3 9 66
Cooperative       1                                     1
Association       1   2                         3       6
Special legal forms   1       4                           1   1 7
∑ 32 41 26 66 31 164 3 5 30 19 3 16 28 17 21 17 60 8 104 12 178 250 1'131

This audit firm is recorded as statutory auditor for 1239 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 1'131 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 2 3 8 19                 1   3           10 3 49
Genève       3 4 148     2 4   4     1       39 4 9 9 227
Lausanne   1   2 5 2       8                 52 2 2 3 77
Lugano 1             1 1         1     58   1   4 2 69
Zürich 29 37 18 42 22 14 3 4 27 7 3 12 27 16 17 17 2 8 12 6 153 233 709
∑ 32 41 26 66 31 164 3 5 30 19 3 16 28 17 21 17 60 8 104 12 178 250 1'131

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
Pomellato Switzerland SA CHE-239.651.965 Cadempino 04.02.2026 First auditor Lugano
JAKIN SA CHE-287.163.970 Bioggio 02.02.2026 Auditor switch Lugano
Stadler CIS AG CHE-388.302.223 Baar 02.02.2026 Auditor switch Zürich
Duomed Swiss AG CHE-107.250.774 Schenkon 28.01.2026 Auditor switch Zürich
Deciphera Pharmaceuticals (Schweiz) AG CHE-190.700.738 Zug 26.01.2026 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
Schoeller Allibert Swiss Sàrl CHE-113.810.428 Romont (FR) 28.01.2026 Auditor switch Lausanne
Constructor Capital AG CHE-204.175.444 Zürich 26.01.2026 Auditor switch Zürich
Manufakt8048 AG CHE-406.148.519 Zürich 26.01.2026 Auditor switch Zürich
STEINER PROMOTIONS ET PARTICIPATIONS SA CHE-100.273.538 Tolochenaz 23.01.2026 Auditor switch Zürich
Steiner Development AG CHE-163.864.604 Zürich 20.01.2026 Auditor switch Zürich