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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 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  (10.67 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 11 years (max.: 36.2 years)

Total number of statutory audit engagements: 3'159 (Ranked #3 in Switzerland)

Change in number of audit engagements: -21 (since 31.12.2024), -158 (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 76 2 8 209 72 100 61 254 3 14 5 49 20 18 4 58 19 40 31 51 112 1 267 33 192 497 2'196
Limited liability company 14     9 8 19 5 33   1 1 10 7   1 7 16 6 6   11   38 2 63 53 310
Foundation 11 1   61 13 31 3 27 1 2 1 8 3 1   8   6 6 3 15 1 22 3 18 92 337
Cooperative 23 1 2 26 8 2 10 5 1 8 5 17 3 1 1 32 1 13 4 14 17 2 15 18 6 21 256
Association       8   1   3       2             1   1   6     14 36
Special legal forms       3   5 1 3 1 1                         3 1   6 24
∑ 124 4 10 316 101 158 80 325 6 26 12 86 33 20 6 105 36 65 48 68 156 4 351 57 279 683 3'159

This audit firm is recorded as statutory auditor for 3620 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 3'159 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 84 127 17 97 1 8 9 21 5 1 1 39 4 22 12 16 23 3 107 27 24 88 813
Bern 6     228   6 21   1   1 9 5 12   3   20   2 2 1 12   7 30 366
Lancy       5 1 4 9 175       2 7         5         42 2 6 13 271
Lausanne       14   2 27 33         11               7   167 23 7 3 294
Lugano               2   3   1 1 2             117       1 5 132
Luzern 3     2   2           17     3                   3   30
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     5   2 1 5       57 10 96
Zürich 44 2 2 28 8 16 6 14 4 7 1 28 3 3 1 21 23 13 33 37 1   19 4 168 517 1'003
∑ 124 4 10 316 101 158 80 325 6 26 12 86 33 20 6 105 36 65 48 68 156 4 351 57 279 683 3'159

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: 3'165

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
Hirslanden Institute for Medical Education CHE-291.539.512 Opfikon 18.03.2025 Auditor switch Zürich
Swisscanto Private Equity Growth II AG CHE-482.421.700 Zürich 13.03.2025 First auditor Zürich
Artonis AG CHE-447.219.447 Zürich 12.03.2025 First auditor Zürich
Société coopérative Migros Neuchâtel-Fribourg CHE-105.925.472 Laténa 12.03.2025 Auditor switch Lausanne
Muuvr Labs AG CHE-207.361.055 Zürich 10.03.2025 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
Kaderstiftung der Siemens-Gesellschaften in der Schweiz CHE-109.740.486 Zürich 20.03.2025 Auditor switch Zürich
Personalwohlfahrtsfonds der Aktiengesellschaft Adolph Saurer CHE-109.781.172 Arbon 19.03.2025 Auditor switch Zürich
Merisant Company 2 Sàrl CHE-101.425.006 Neuchâtel 18.03.2025 Auditor switch Lausanne
Stellantis &You Switzerland SA CHE-100.599.796 Meyrin 17.03.2025 Auditor switch Lancy
Pensionskasse für die Mitarbeitenden der Gruppe Mobiliar CHE-100.657.637 Bern 11.03.2025 Auditor switch Bern