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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 (41) 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 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-309.054.162) in Porrentruy (JU)
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 317  (20.58 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 10.3 years (max.: 33.3 years)

Total number of statutory audit engagements: 6'525 (Ranked #1 in Switzerland)

Change in number of audit engagements: +221 (since 31.12.2024), +229 (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 531 7 9 492 159 130 135 194 20 59 31 314 42 51 80 124 25 287 115 71 125 49 263 118 267 813 4'511
Limited liability company 23     27 9 11 13 15 4 8 5 12 6 1 3 16 2 23 6 2 7 2 9 18 29 73 324
Foundation 121   10 130 36 85 13 33 7 16 11 80 1 15 20 38 4 85 15 13 30 11 55 21 36 267 1'153
Cooperative 25   1 34 9 6 8   1 6   24 1 1 1 3   12 4 6 4 3 7 2 3 87 248
Association 27     45 9 13 1 6   2   21     1 4   15 1   3   14 4 10 59 235
Special legal forms 2 1 1 5 1 2 5 1 2 1   3   1   5 1 5   2 5   6 1   4 54
∑ 729 8 21 733 223 247 175 249 34 92 47 454 50 69 105 190 32 427 141 94 174 65 354 164 345 1'303 6'525

This audit firm is recorded as statutory auditor for 2603 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 6'525 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     13 12 12   1   5   18   1   3   28 3 3   1 1   15 64 626
Affoltern am Albis 5       1                                       3 22 31
Altdorf (UR) 1                 2   2             13     51     3   72
Baden 113     10 1 1       1   7     2     4 2       2 1 4 27 175
Basel 12 1   10 83 177     1 1 1 4   1 3     12     2 2 1   2 22 335
Bern 18     319 2 4 15 4 2 7 1 12 5 1   1 2 11 5 7 1 2 10 16 8 31 484
Biel/Bienne 4     71 2 4 1 1     1   3         7         5     10 109
Burgdorf 2     68     1         1           9             1 2 84
Chur                 1 40           1       3             45
Delémont                     11   4                           15
Epalinges       1     9 19     6   18         1 1       208 14 2   279
Frauenfeld                               1       15         1 4 21
Glarus     1 1         19             8     1             9 39
Grenchen       31 1 2 1               1 1   76     1   1   3 6 124
Herisau   1 3                         1                   2 7
Lachen 12   1   3 3   1 3 4   2 1   1 17 1   54 2   1 1 1 5 34 147
Lamone               4   5   2                 158   1   1 4 175
Langenthal       76                           3                 79
Laufen         13                         14                 27
Liestal 7     3 85 23         2 6   1       7 1       3   1 5 144
Luzern 9     13 1         7   261   14 24 4   1 9   3 3   4 36 43 432
Monthey                                             3 8     11
Muri (AG) 2                                                   2
Nyon               3                             29       32
Olten 11     10 1   1       1 1           56             5   86
Porrentruy                     18                               18
Porrentruy               1                                     1
Sarnen 1                     4   1 47                       53
Schaffhausen                                 5   1 1           2 9
Sion       1     1 4                             3 112 2   123
Solothurn 6     53 1 1 2         3 3   3 1   192     1   1   3 15 285
St. Gallen 3 4 16 1 1       2 5           119 10   2 48     1   5 19 236
Stans 2     2               6 1 44 8 1           4     1 1 70
Steinhausen 3     14 1         2   12 1   1 3   1 2           137 22 199
Sursee 11     5     1   2     93   3 3 1       1     1   6 6 133
Vernier       1     7 199         6 1             3   55 2 5 7 286
Villars-sur-Glâne       4     134 2         7                   17 4 2 4 174
Wetzikon (ZH) 2 1   1         1     2     1 4 3   4 3     2   4 169 197
Winterthur                                                   1 1
Zofingen 17                                 2             1   20
Zürich 42 1   25 15 20 2 10 3 13 6 18 1 2 11 24 11 3 43 11 5 1 9 2 89 772 1'139
∑ 729 8 21 733 223 247 175 249 34 92 47 454 50 69 105 190 32 427 141 94 174 65 354 164 345 1'303 6'525

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), Winterthur, Zofingen, Zürich.

Related audit firms

Network:

Total number of audit engagements across the network: 6'526

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
ARGO-HYTOS Group AG CHE-108.702.046 Baar 11.11.2025 Auditor switch Steinhausen
CdR Capital SA CHE-169.671.452 Genève 11.11.2025 Auditor switch Vernier
Danser Shipping AG CHE-439.618.905 Basel 11.11.2025 Auditor switch Basel
Danser Switzerland AG CHE-102.395.589 Basel 11.11.2025 Auditor switch Basel
E. ANWANDER & CIE. AG CHE-107.735.089 Oberwil (BL) 11.11.2025 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
Radio-Television-Foto Bürgi AG CHE-107.781.824 Therwil 11.11.2025 Auditor switch Liestal
Auto-Interleasing AG CHE-105.857.534 Muttenz 10.11.2025 Auditor switch Zürich
L. Mavriqi Handels GmbH CHE-295.487.618 Saas-Fee 07.11.2025 Auditor switch Liestal
Fondazione SOS Planet CHE-248.779.794 Bregaglia 06.11.2025 Auditor switch Chur
Gesellschaft für Schweizerische Kunstgeschichte (GSK) CHE-108.017.588 Bern 05.11.2025 Auditor switch Bern