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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  (11.06 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 11.1 years (max.: 36.4 years)

Total number of statutory audit engagements: 3'152 (Ranked #3 in Switzerland)

Change in number of audit engagements: -27 (since 31.12.2024), -146 (over the last 12 months)

Number of audit clients listed on a Swiss stock exchange: 47 (thereof 5 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 77 2 8 208 70 101 60 253 3 13 5 49 19 17 4 59 19 39 34 51 113 1 261 32 194 502 2'194
Limited liability company 14     9 9 19 5 32   1 1 10 7 1 1 7 15 6 6   12   37 2 63 52 309
Foundation 11 1   60 13 31 3 27 1 3 1 8 3 1   8   6 6 2 15 1 21 3 17 93 335
Cooperative 23 1 2 25 8 2 9 5 1 8 5 17 3 1 1 32 1 13 4 14 17 2 15 18 6 21 254
Association       8   1   3       2             1   1   6     14 36
Special legal forms       3   5 1 3 1 1                         3 1   6 24
∑ 125 4 10 313 100 159 78 323 6 26 12 86 32 20 6 106 35 64 51 67 158 4 343 56 280 688 3'152

This audit firm is recorded as statutory auditor for 3630 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 3'152 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 34 82 128 16 97 1 8 9 21 5 2 1 39 4 22 15 16 23 3 106 27 24 91 816
Bern 6     227   6 20   1   1 9 4 12   3   19   2 2 1 12   7 30 362
Lancy       5 1 4 9 176       2 7         5         42 2 6 13 272
Lugano               2   3   1 1 1             119       1 5 133
Luzern 3     2   2           17     3                   3   30
Renens (VD)       13   2 27 32         11               7   160 22 7 4 285
St. Gallen 6   4 1 3     3   6 1   1     42 1   1 12 1   4 1 3 11 101
Zug 3     1 1     1   1   7   2     4   2 1 5       57 10 95
Zürich 45 2 2 28 9 16 6 12 4 7 1 28 3 3 1 22 23 13 33 36 1   19 4 169 518 1'005
∑ 125 4 10 313 100 159 78 323 6 26 12 86 32 20 6 106 35 64 51 67 158 4 343 56 280 688 3'152

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: 3'158

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
Credit Suisse Stiftung für Mitarbeiter-Beteiligungsmodelle CHE-112.154.946 Zürich 13.05.2025 Auditor switch Basel
IT Xpert AG CHE-334.124.392 Schöftland 01.05.2025 First auditor Zürich
MHGA Holding AG CHE-423.296.747 Zürich 30.04.2025 Auditor switch Basel
Swibro AG CHE-112.691.144 St. Gallen 30.04.2025 Auditor switch Zürich
Vorsorge Partner AG CHE-111.729.548 St. Gallen 30.04.2025 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
e + h Services AG CHE-104.394.253 Däniken 15.05.2025 Auditor switch Bern
Balmelli-Immob AG CHE-421.521.347 Bern 09.05.2025 Auditor switch Renens (VD)
Sailing Athletes Foundation (SAF) CHE-389.174.123 Grandson 09.05.2025 Auditor switch Renens (VD)
Eurocapital Invest AG CHE-101.549.163 Basel 07.05.2025 Auditor switch Basel
Markant Finanz AG CHE-108.032.441 Basel 07.05.2025 Auditor switch Basel