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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  (8.71 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 8 years (max.: 34 years)

Total number of statutory audit clients: 1'106 (Ranked #6 in Switzerland)

Change in number of audit engagements: -30 (since 31.12.2025), +3 (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 21 34 23 51 30 116 3 4 15 7 1 9 6 14 17 15 54 9 75 8 135 191 838
Limited liability company 11 4 4 6   19   1 9 7   3 15 3 2 1 1   19 1 36 44 186
Foundation   2   5   29     5 1 1 1 2   1 1 3   4 1 3 9 68
Cooperative       1                                   1 2
Association       1   2                         3       6
Special legal forms   1       4                           1     6
∑ 32 41 27 64 30 170 3 5 29 15 2 13 23 17 20 17 58 9 101 11 174 245 1'106

This audit firm is recorded as statutory auditor for 1278 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 1'106 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   3           10 3 51
Genève       2 4 155     2 3   4     1       38 3 11 7 230
Lausanne   1   2 4 2       7                 52 2 2 3 75
Lugano 1             1 1         1     55   1   4 2 66
Zürich 28 37 19 40 22 13 3 4 26 5 2 9 22 16 16 17 3 9 10 6 147 230 684
∑ 32 41 27 64 30 170 3 5 29 15 2 13 23 17 20 17 58 9 101 11 174 245 1'106

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
HG COMMERCIALE Handelsgenossenschaft des Schweizerischen Baumeisterverbandes CHE-105.836.561 Zürich 16.07.2026 Auditor switch Zürich
HGC Handel AG CHE-106.535.292 Zürich 16.07.2026 Auditor switch Zürich
Altola AG CHE-107.791.047 Olten 06.07.2026 Auditor switch Zürich
Elektro ERTI AG CHE-113.004.746 Bern 06.07.2026 Auditor switch Zürich
BioVersys AG CHE-114.512.761 Basel 26.06.2026 Auditor switch Basel
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
Gucci Swiss Timepieces SA CHE-342.884.200 Cortaillod 10.07.2026 Auditor switch Genève
RATIONAL Schweiz AG CHE-100.258.438 Balgach 24.06.2026 Auditor switch Zürich
Admicasa Bauwerk AG CHE-114.104.043 Zürich 17.06.2026 Auditor switch Zürich
Admicasa Management AG CHE-310.167.560 Zürich 17.06.2026 Auditor switch Zürich
Admicasa Service AG CHE-106.429.477 Zürich 17.06.2026 Auditor switch Zürich