Tired of renewing your auditor permission?

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

Fact Sheet Ernst & Young AG

Core Company Information
Company Name Ernst & Young AG
UID CHE-105.932.265
Alternative / previous Names Ernst & Young SA, Ernst & Young Ltd
ATAG Ernst & Young AG, ATAG Ernst & Young SA, ATAG Ernst & Young Ltd
Domicile Basel
Canton BS
Legal Form Limited corporation
Inscription Date 28.09.1998
Website https://www.ey.com/ch
Takeovers: Neofidaria AG (ADM-169.740.521), per 09.08.2001
Hangartner Treuhand AG (CHE-100.067.795), per 19.11.2002
Verifica SA (CHE-100.818.159), per 11.05.2005
ATAG Allgemeine Treuhand AG (CHE-100.818.892), per 20.12.2019
GBR Ernst & Young AG (CHE-100.918.105), per 05.03.2002
Ernst & Young AG (CHE-101.392.967), per 11.11.2003
Treuhand- und Revisionsgesellschaft T + R Grischa AG (CHE-101.715.639), per 19.06.2001
Fiduciaire Jacques Ceriani SA (CHE-101.822.086), per 08.04.2005
Fiduciaire de gestion et d'informatique S.A. (CHE-102.664.306), per 31.05.2005
Bösch & Edthofer AG (CHE-103.349.066), per 17.08.2023
FAOA Information
FAOA ID 500646
RAB Permission state-regulated audit firm
FAOA License active (since 28.11.2007)
Link to FAOA website View auditor profile at FAOA
Branch offices (9) Ernst & Young AG (CHE-461.581.835) in Aarau (AG)   [+]
Ernst & Young AG (CHE-311.498.829) in Baden (AG)
Ernst & Young AG (CHE-441.858.784) in Bern (BE)
Ernst & Young AG (CHE-354.720.232) in Biel/Bienne (BE)
ATAG Ernst & Young AG (CHE-132.732.622) in Buchs (SG) (SG)
Ernst & Young AG (CHE-421.676.725) in Chur (GR)
Ernst & Young AG (CHE-357.440.711) in Granges-Paccot (FR)
Ernst & Young AG (CHE-367.926.091) in Kreuzlingen (TG)
Ernst & Young SA (CHE-186.791.979) in Lancy (GE)
Ernst & Young SA (CHE-294.400.879) in Lausanne (VD)
Ernst & Young AG (CHE-475.755.395) in Lugano (TI)
Ernst & Young AG (CHE-259.230.495) in Luzern (LU)
Ernst & Young SA (CHE-185.564.694) in Neuchâtel (NE)
Ernst & Young SA (CHE-264.470.869) in Sion (VS)
Ernst & Young AG (CHE-327.393.030) in St. Gallen (SG)
Ernst & Young AG (CHE-152.377.547) in Zug (ZG)
Ernst & Young AG (CHE-491.907.686) in Zürich (ZH)
Membership in Associations EXPERTsuisse
Number of auditors with permission 296  (10.74 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 10.9 years (max.: 36.1 years)

Total number of statutory audit engagements: 3'179 (Ranked #3 in Switzerland)

Change in number of audit engagements: -1 (since 31.12.2024), -188 (over the last 12 months)

Number of audit clients listed on a Swiss stock exchange: 46 (thereof 5 in the SMI, 7 in the SMI Expanded and 24 in the SPI)

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 76 2 8 212 71 99 63 258 3 14 5 48 21 18 4 60 18 41 30 51 111 1 264 34 194 495 2'201
Limited liability company 14     9 8 19 5 33   1 1 10 8   1 7 16 6 6 1 11   37 2 62 55 312
Foundation 11 1   64 13 31 3 30 1 2 1 8 3 1   8   6 6 4 16 1 24 3 19 95 351
Cooperative 23 1 2 26 8 2 10 5 1 8 5 17 2 1 1 32 1 13 4 14 17 2 15 18 6 21 255
Association       9   1   4       2                 1   6     13 36
Special legal forms       3   5 1 3 1 1                         3 1   6 24
∑ 124 4 10 323 100 157 82 333 6 26 12 85 34 20 6 107 35 66 46 70 156 4 349 58 281 685 3'179

This audit firm is recorded as statutory auditor for 3612 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 3'179 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 ∑
Aarau 26     2 4 1       1   1     1   3 5             3 6 53
Basel 36 2 4 35 84 126 17 97 1 8 9 21 5 1 1 39 4 22 11 16 23 3 107 27 25 89 813
Bern 6     235   6 21   1   1 9 5 12   3   21   2 2 1 12   7 30 374
Lancy       5 1 4 9 181       2 7         5         42 2 6 13 277
Lausanne       14   2 29 34         12               8   165 24 7 4 299
Lugano               2   3   1 1 2             116       1 5 131
Luzern 3     2   2           17     3                   2   29
St. Gallen 6   4 1 2     3   6 1   1     44 1   1 12 1   5 1 3 12 104
Zug 3     1 1     1   1   7   2     5   2 1 5       58 11 98
Zürich 44 2 2 28 8 16 6 15 4 7 1 27 3 3 1 21 22 13 32 39 1   18 4 169 515 1'001
∑ 124 4 10 323 100 157 82 333 6 26 12 85 34 20 6 107 35 66 46 70 156 4 349 58 281 685 3'179

Show client list for Aarau, Basel, Bern, Lancy, Lausanne, Lugano, Luzern, St. Gallen, Zug, Zürich.

Related audit firms

Network:

Total number of audit engagements across the network: 3'185

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
Valenz Distribution GmbH CHE-134.463.338 Wollerau 14.01.2025 Auditor switch Zürich
Augenarzt-Praxis Stemmle AG CHE-427.034.933 Zürich 13.01.2025 First auditor Aarau
Ambulante Klinik Meilen AG CHE-265.272.869 Meilen 10.01.2025 First auditor Zürich
B.F.Y. Bétonfrais Yverdon S.A. CHE-106.035.776 Yverdon-les-Bains 10.01.2025 Auditor switch Lausanne
Swiss Post E-Mobility Charging Solutions AG CHE-341.981.036 Bern 10.01.2025 First auditor Bern
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
Corporacion Campos del Pacifico AG CHE-135.747.028 Alpnach 13.01.2025 Opting-out Luzern
VistaJet Group Holding SA CHE-114.501.763 Zug 13.01.2025 Auditor switch Zug
Air Crew & Management SA CHE-114.411.321 Zug 09.01.2025 Auditor switch Zug
Genossenschaft Schweizerische Ärzte-Krankenkasse CHE-107.131.052 St. Gallen 09.01.2025 Auditor switch St. Gallen
Illumina Switzerland GmbH CHE-402.501.551 Zürich 09.01.2025 Auditor switch Lancy