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Fact Sheet FORVIS MAZARS SA

Core Company Information
Company Name FORVIS MAZARS SA
UID CHE-107.861.311
Alternative / previous Names MAZARS AG, MAZARS LTD
Mazars & Guérard SA (until 26.02.2003)
MAZARS (Suisse) SA, MAZARS (Schweiz) AG, MAZARS (Switzerland) LTD (until 19.12.2005)
MAZARS CORESA (until 26.01.2010)
MAZARS CORESA SA, MAZARS CORESA AG, MAZARS CORESA LTD (until 19.04.2013)
MAZARS SA, MAZARS AG, MAZARS LTD (until 13.06.2024)
Domicile Vernier
Canton GE
Legal Form Limited corporation
Inscription Date 06.03.1975
Website https://www.mazars.ch
Phone +41 4 4 3 84 84 44
Takeovers: Coresa, Contrôle, Organisation, Révision SA (CHE-106.031.703), per 19.12.2005
REVITAG SA (CHE-101.360.312), per 09.03.2017
FAOA Information
FAOA ID 500241
RAB Permission state-regulated audit firm
FAOA License active (since 27.12.2007)
Link to FAOA website View auditor profile at FAOA
Branch offices (9) FORVIS MAZARS SA (CHE-183.769.593) in Basel (BS)  
FORVIS MAZARS SA (CHE-328.124.886) in Bern (BE)
FORVIS MAZARS SA (CHE-209.061.262) in Delémont (JU)
FORVIS MAZARS SA (CHE-388.216.322) in Fribourg (FR)
FORVIS MAZARS SA (CHE-281.111.934) in Lausanne (VD)
FORVIS MAZARS SA (CHE-363.308.793) in Lugano (TI)
FORVIS MAZARS SA (CHE-463.790.686) in Neuchâtel (NE)
FORVIS MAZARS SA (CHE-317.742.057) in Sion (VS)
FORVIS MAZARS SA (CHE-248.814.976) in Zürich (ZH)
MAZARS CORESA (CHE-271.109.628) in Lausanne (VD)
Membership in Associations EXPERTsuisse
IIAS
Number of auditors with permission 72  (11.18 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 4.9 years (max.: 26.1 years)

Total number of statutory audit clients: 805 (Ranked #9 in Switzerland)

Change in number of audit engagements: +7 (since 31.12.2025), +83 (over the last 12 months)

Number of audit clients listed on a Swiss stock exchange: 12 (thereof 0 in the SMI, 0 in the SMI Expanded and 6 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 VD VS ZG ZH ∑
Limited corporation 14     42 14 3 18 122 1 1 22 9 37 1 3 11 1 7 11 6 14 122 23 45 76 603
Limited liability company 3     3 1   1 41     2 1                   20 2 4 7 85
Foundation     1 2     7 32       1 5     2     1   1 14 4   3 73
Cooperative 2 1   2     1           1                         7
Association       1     1 10     1 1                   15   1 1 31
Special legal forms               3                           3       6
∑ 19 1 1 50 15 3 28 208 1 1 25 12 43 1 3 13 1 7 12 6 15 174 29 50 87 805

This audit firm is recorded as statutory auditor for 228 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 805 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 VD VS ZG ZH ∑
Basel 2       4                                         6
Bern       17               2       1   1   1       1 1 24
Delémont       4             12                             16
Fribourg       2     15 1     1                     2       21
Lausanne       4     6 9     7   11         1 1 1   132 8 3 2 185
Neuchâtel 2     1     1       1   21                 2     1 29
Sion                                             12     12
Vernier       6     4 194 1   4   11 1 1 2   1     10 26 9 7 12 289
Zürich 15 1 1 16 11 3 2 4   1   10     2 10 1 4 11 4 5 12   39 71 223
∑ 19 1 1 50 15 3 28 208 1 1 25 12 43 1 3 13 1 7 12 6 15 174 29 50 87 805

Show client list for Basel, Bern, Delémont, Fribourg, Lausanne, Neuchâtel, Sion, Vernier, Zürich.

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Direct personal relationship:

Latest audit engagements
These are this auditor's latest audit engagements.
 
Client Name Client UID Domicile Start Date Type of switch Auditor Branch
Genossenschaft Krankengeldversicherung JardinSuisse in Liquidation CHE-103.805.035 Aarau 09.02.2026 Auditor switch Zürich
Fortinet Switzerland GmbH CHE-337.237.963 Ecublens (VD) 05.02.2026 First auditor Zürich
ARDENTIS CLINIQUE DENTAIRE SION SA CHE-319.603.515 Sion 03.02.2026 First auditor Lausanne
Better Cotton Initiative CHE-317.159.900 Vernier 26.01.2026 Auditor switch Vernier
ALTERN8 SA CHE-105.467.972 Fribourg 22.01.2026 Auditor switch Neuchâtel
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
LINK & FILM FOUNDATION CHE-197.535.831 Genève 09.02.2026 Auditor switch Vernier
Adera Swiss Trading SA CHE-172.620.248 Genève 19.01.2026 Auditor switch Vernier
Stragen Pharma SA CHE-108.019.334 Plan-les-Ouates 07.01.2026 Auditor switch Vernier
HELVETIA FACTORING SA CHE-429.907.584 Lugano 30.12.2025 Auditor switch Vernier
Kiekert Swiss GmbH CHE-153.553.077 Lamone 29.12.2025 Auditor switch Vernier