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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 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-294.400.879) in Renens (VD) (VD)
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 285  (11.00 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 11.1 years (max.: 36.5 years)

Total number of statutory audit engagements: 3'136 (Ranked #3 in Switzerland)

Change in number of audit engagements: -43 (since 31.12.2024), -115 (over the last 12 months)

Number of audit clients listed on a Swiss stock exchange: 49 (thereof 7 in the SMI, 7 in the SMI Expanded and 25 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 80 2 8 198 70 101 59 253 3 13 4 50 17 17 4 58 19 39 33 49 113 1 261 32 192 502 2'178
Limited liability company 19     9 8 17 5 32   1 1 10 7 1 1 7 16 6 6   12   37 2 65 53 315
Foundation 11 1   60 13 30 3 27 1 3 1 8 3 1   8   6 6 2 15 1 21 3 17 92 333
Cooperative 21 1 2 25 8 2 9 5 1 8 5 17 3 1 1 32 1 13 4 14 16 2 15 17 6 21 250
Association       8   1   3       2             1   1   6     14 36
Special legal forms       3   5 1 3 1 1                         3 1   6 24
∑ 131 4 10 303 99 156 77 323 6 26 11 87 30 20 6 105 36 64 50 65 157 4 343 55 280 688 3'136

This audit firm is recorded as statutory auditor for 3647 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 3'136 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 35 2 4 32 82 126 16 97 1 8 9 21 5 2 1 39 4 22 15 16 22 3 106 26 24 89 807
Bern 6     221   6 19   1   1 9 2 12   3   19   2 2 1 12   7 31 354
Lancy       5   4 9 176       2 7         5         42 2 7 13 272
Lugano               2   3   1 2 1             119       1 5 134
Luzern 3     2   2           18     3                   3   31
Renens (VD)       12   2 27 32         10               7   160 22 6 4 282
St. Gallen 6   4 1 3     3   6 1   1     42 1   1 10 1   4 1 3 11 99
Zug 10     1 1     1   1   7   2     4   2 1 5       57 9 101
Zürich 45 2 2 27 9 15 6 12 4 7   28 3 3 1 21 24 13 32 36 1   19 4 169 520 1'003
∑ 131 4 10 303 99 156 77 323 6 26 11 87 30 20 6 105 36 64 50 65 157 4 343 55 280 688 3'136

Show client list for Aarau, Basel, Bern, Lancy, Lugano, Luzern, Renens (VD), St. Gallen, Zug, Zürich.

Related audit firms

Network:

Total number of audit engagements across the network: 3'142

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
Howden Schweiz Holding AG CHE-226.705.511 Zug 23.06.2025 First auditor Zürich
GVZ Immobilien AG CHE-103.989.314 Zürich 19.06.2025 Auditor switch Zürich
Stiftung RBS Historic CHE-491.195.483 Ittigen 19.06.2025 First auditor Bern
Crossinvest Partecipazioni SA CHE-278.787.551 Lugano 16.06.2025 First auditor Lugano
Geberit AG CHE-101.065.474 Rapperswil-Jona 16.06.2025 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
Xantis Pharma AG CHE-392.884.975 Baar 23.06.2025 Discontinued Zürich
Cendres+Métaux Lux SA CHE-454.130.315 Biel/Bienne 20.06.2025 Auditor switch Bern
Cendres+Métaux SA CHE-108.784.268 Biel/Bienne 20.06.2025 Auditor switch Bern
R. Schlierholz AG CHE-107.149.388 Köniz 20.06.2025 Auditor switch Bern
Private Client Bank AG CHE-104.684.082 Zürich 17.06.2025 Auditor switch Zürich