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Fact Sheet BDO AG

Core Company Information
Company Name BDO AG
UID CHE-105.952.747
Alternative / previous Names BDO SA, BDO Ltd
BDO Visura
Visura Treuhand-Gesellschaft, Visura Société Fiduciaire, Visura Società Fiduciaria, Visura Auditing and Fiduciary Company
Domicile Zürich
Canton ZH
Legal Form Limited corporation
Inscription Date 30.12.1932
Website https://www.bdo.ch
Takeovers: accontax Markus Gfeller Treuhand AG (CHE-101.350.360), per 03.06.2025
BDO Sofirom SA (CHE-106.015.064), per 09.07.2013
BDO Visura (Valais) SA (CHE-113.627.261), per 09.07.2013
BDO Visura International AG (CHE-101.311.259), per 29.11.2016
Continental Revision und Treuhand AG in Liquidation (CHE-102.133.983), per 11.12.2020
Dr. Suter Treuhand AG (CHE-106.926.617), per 06.05.2010
Fidirevisa SA (CHE-105.752.734), per 17.12.2015
FSA FIDUCIARIA SVIZZERA DEGLI ALBERGATORI DIVISIONE TICINO SA (CHE-110.366.118), per 09.07.2013
Jörg Moser AG (CHE-108.766.997), per 03.06.2022
LMK Revisions AG (CHE-102.604.764), per 12.07.2021
Wyss + Partner Treuhand AG (CHE-106.214.899), per 29.06.2021
FAOA Information
FAOA ID 500705
RAB Permission state-regulated audit firm
FAOA License active (since 13.12.2007)
Link to FAOA website View auditor profile at FAOA
Branch offices (42) BDO AG (CHE-345.012.024) in Aarau (AG)  
BDO AG (CHE-265.966.133) in Affoltern am Albis (ZH)
BDO AG (CHE-426.842.563) in Altdorf (UR) (UR)
BDO AG (CHE-229.255.214) in Baden (AG)
BDO AG (CHE-370.772.724) in Basel (BS)
BDO AG (CHE-430.259.378) in Bern (BE)
BDO AG (CHE-305.494.906) in Biel/Bienne (BE)
BDO SA (CHE-224.514.963) in Bulle (FR)
BDO AG (CHE-414.946.954) in Burgdorf (BE)
BDO AG (CHE-444.757.547) in Chur (GR)
BDO SA (CHE-383.819.803) in Delémont (JU)
BDO SA (CHE-347.141.454) in Epalinges (VD)
BDO AG (CHE-487.865.056) in Frauenfeld (TG)
BDO AG (CHE-314.312.594) in Glarus (GL)
BDO AG (CHE-327.753.565) in Grenchen (SO)
BDO AG (CHE-325.977.510) in Herisau (AR)
BDO AG (CHE-373.972.722) in Lachen (SZ)
BDO AG (CHE-132.773.704) in Lamone (TI)
BDO AG (CHE-408.158.150) in Langenthal (BE)
BDO AG (CHE-320.101.456) in Laufen (BL)
BDO AG (CHE-147.528.510) in Liestal (BL)
BDO AG (CHE-384.263.558) in Luzern (LU)
BDO SA (CHE-213.009.885) in Monthey (VS)
BDO AG (CHE-218.606.663) in Muri (AG) (AG)
BDO SA (CHE-412.010.941) in Nyon (VD)
BDO AG (CHE-303.222.254) in Olten (SO)
BDO SA (CHE-309.054.162) in Porrentruy (JU)
BDO AG (CHE-135.926.789) in Sarnen (OW)
BDO AG (CHE-161.247.777) in Schaffhausen (SH)
BDO AG (CHE-210.965.785) in Schwyz (SZ)
BDO SA (CHE-278.511.546) in Sion (VS)
BDO AG (CHE-389.731.986) in Solothurn (SO)
BDO AG (CHE-386.245.531) in St. Gallen (SG)
BDO AG (CHE-457.315.785) in Stans (NW)
BDO AG (CHE-384.985.628) in Steinhausen (ZG)
BDO AG (CHE-295.361.041) in Sursee (LU)
BDO AG (CHE-154.513.531) in Uster (ZH)
BDO SA (CHE-398.161.059) in Vernier (GE)
BDO SA (CHE-320.207.362) in Villars-sur-Glâne (FR)
BDO AG (CHE-345.180.503) in Wetzikon (ZH) (ZH)
BDO AG (CHE-392.959.099) in Winterthur (ZH)
BDO AG (CHE-313.962.401) in Zofingen (AG)
BDO AG (CHE-367.201.384) in Arosa (GR)
BDO SA (CHE-208.015.259) in Delémont (JU)
BDO Visura (CHE-313.641.055) in Delémont (JU)
BDO Visura (CHE-421.671.283) in Egerkingen (SO)
Visura Société Fiduciaire (CHE-999.000.112) in Fribourg (FR)
BDO AG (CHE-367.593.836) in Kreuzlingen (TG)
BDO Visura (CHE-325.058.313) in Nyon (VD)
BDO Visura (ADM-212.658.265) in Oensingen (SO)
BDO Visura (ADM-278.574.216) in Olten (SO)
BDO SA (CHE-464.088.838) in Porrentruy (JU)
BDO AG (CHE-329.959.698) in Rüte (AI)
BDO AG (CHE-363.697.773) in Wil (SG) (SG)
BDO Visura (CHE-316.539.499) in Zürich (ZH)
Membership in Associations EXPERTsuisse
SVIR
Number of auditors with permission 328  (19.47 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 10.2 years (max.: 32.9 years)

Total number of statutory audit engagements: 6'385 (Ranked #1 in Switzerland)

Change in number of audit engagements: +81 (since 31.12.2024), +149 (over the last 12 months)

Number of audit clients listed on a Swiss stock exchange: 18 (thereof 0 in the SMI, 1 in the SMI Expanded and 13 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 527 5 9 493 145 115 130 191 20 57 32 305 41 52 78 120 21 284 116 71 123 50 262 114 258 791 4'410
Limited liability company 21     27 9 12 13 15 4 8 5 12 6 1 3 16 2 22 7 2 7 2 9 17 27 70 317
Foundation 119   11 129 33 77 13 31 7 15 12 80 1 15 19 39 4 85 14 13 29 11 55 21 35 263 1'131
Cooperative 24 1 1 35 9 5 8   1 6   23 1 1 1 3   12 4 6 4 3 6 2 3 83 242
Association 23     45 9 13 1 6   2   22     1 4   14 1   3   13 4 10 58 229
Special legal forms 2 1 1 6 1 2 5 3 2 1   3   1   5   5   2 5   6 1   4 56
∑ 716 7 22 735 206 224 170 246 34 89 49 445 49 70 102 187 27 422 142 94 171 66 351 159 333 1'269 6'385

This audit firm is recorded as statutory auditor for 2586 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 6'385 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 446     11 12 12   1   5   18   1   2   28 4 3   1 1   14 63 622
Affoltern am Albis 5       1                                       3 22 31
Altdorf (UR) 1                 1   2             13     52     3   72
Baden 111     10 1 2       1   7     2     4 2       2 1 4 25 172
Basel 10     10 67 153     1     2   1 2     11     2 2 1   2 17 281
Bern 18     322 2 4 15 4 2 7 1 12 5 1   1 1 11 5 6 1 2 10 16 8 30 484
Biel/Bienne 3     70 2 5 1 1     1   3         6         5     10 107
Burgdorf 2     67     1         1           9             1 2 83
Chur                 1 42           1       3             47
Delémont       1             8   4                           13
Epalinges       1     9 18     6   18         1 1       210 14 2   280
Frauenfeld                               1       14         1 4 20
Glarus     1 1         19             9     1             10 41
Grenchen       30 1 2 1               1 1   76     1   1   3 6 123
Herisau   1 3                         1                   2 7
Lachen 12   2   3 2   1 3 4   2     1 14 1   53 2   1     4 26 131
Lamone               4   5   2                 156   1   1 4 173
Langenthal       75                           3                 78
Laufen         13                         14                 27
Liestal 6     1 83 22         2 5   1       7 1       3   1 5 137
Luzern 9     13 1         7   256   14 22 4   1 8   3 3   4 39 42 426
Monthey                                             3 8     11
Muri (AG) 2                                                   2
Nyon               3                             27       30
Olten 11     8 1   1       1 1           48             5   76
Porrentruy               1                                     1
Porrentruy       1             24                               25
Sarnen 1                     4   1 47                       53
Schaffhausen                                 1                 2 3
Sion             1 3                             4 108 2   118
Solothurn 6     55 1 1 2         3 3   3 1   195     1   1   3 14 289
St. Gallen 3 3 16 1 1       2 4           120 10 1 2 51     1   5 19 239
Stans 2     2               7 1 45 8 1           4     1 1 72
Steinhausen 3     14 1     1   2   12 1   1 3   1 2           129 21 191
Sursee 11     5     1   2     92   3 3 1       1     1   6 8 134
Vernier       1     7 197         7 1       1     3   52 2 5 7 283
Villars-sur-Glâne       4     129 2         6                   17 4 2 4 168
Wetzikon (ZH) 3 1   1         1     2     1 4 3   4 3     2   3 160 188
Zofingen 8                                 1                 9
Zürich 43 2   31 16 21 2 10 3 11 6 17 1 2 11 23 11 4 46 11 4 1 9 2 86 765 1'138
∑ 716 7 22 735 206 224 170 246 34 89 49 445 49 70 102 187 27 422 142 94 171 66 351 159 333 1'269 6'385

Show client list for Aarau, Affoltern am Albis, Altdorf (UR), Baden, Basel, Bern, Biel/Bienne, Burgdorf, Chur, Delémont, Epalinges, Frauenfeld, Glarus, Grenchen, Herisau, Lachen, Lamone, Langenthal, Laufen, Liestal, Luzern, Monthey, Muri (AG), Nyon, Olten, Porrentruy, Porrentruy, Sarnen, Schaffhausen, Sion, Solothurn, St. Gallen, Stans, Steinhausen, Sursee, Vernier, Villars-sur-Glâne, Wetzikon (ZH), Zofingen, Zürich.

Related audit firms

Network:

Total number of audit engagements across the network: 6'386

Direct personal relationship:

Same domicile: 

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
BadenEnergy CHE-157.709.013 Baden 14.07.2025 First auditor Baden
PS Panneaux solaires 2 SA CHE-439.484.504 Lausanne 14.07.2025 First auditor Epalinges
SolidHelp AG CHE-115.657.037 Zürich 14.07.2025 Auditor switch Wetzikon (ZH)
GYYM Health & Fitness AG Basel CHE-284.546.346 Basel 11.07.2025 Auditor switch Basel
Jost Transport AG Umzüge+Lagerungen CHE-102.318.933 Küsnacht (ZH) 11.07.2025 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
ENR Invest SA CHE-113.649.972 Genève 14.07.2025 Auditor switch Vernier
Mont-Fort Funds AG CHE-241.062.519 Val de Bagnes 11.07.2025 Auditor switch Zürich
CP de la Bergère-Hôtel SA CHE-109.681.234 Genève 10.07.2025 Auditor switch Vernier
Didico AG CHE-374.079.622 Meilen 09.07.2025 Auditor switch Zürich
Luware AG CHE-115.547.880 Zürich 09.07.2025 Auditor switch Zürich