The Largest Fiduciary & Trust Companies in St. Gallen
Market overview · updated October 2026
730 fiduciary & trust companies are registered as active in St. Gallen. The market is highly fragmented: 87% of firms employ fewer than ten people, while only 1% have 50 or more. 91 firms (12%) were founded in the last five years. Most firms are based in St. Gallen, Wil SG, Gossau SG.
The largest fiduciary & trust companies in St. Gallen
Ordered by estimated headcount (Alpintel analysis). Detailed figures on each company profile.
- 1OBT AG · St. Gallen
OBT AG provides fiduciary services, auditing, consulting, and IT services. Their offerings include trust management, financial auditing, and business …
- 2WIESER Wirtschaftsprüfung AG · St. Gallen
WIESER Wirtschaftsprüfung AG provides a range of services including accounting from A to Z, tax services, employee administration, auditing, company s…
- 3steuerpartner ag Steuer- und Wirtschaftsberatung · St. Gallen
steuerpartner ag provides a range of services including tax consulting, business consulting, and fiduciary services. They assist clients with comprehe…
Search all 730 fiduciary & trust companies — with size, revenue and ownership
Search now →Frequently asked questions
- How many fiduciary & trust companies are there in St. Gallen?
- There are currently 730 active fiduciary & trust companies registered in St. Gallen (source: Alpintel registry analysis).
- Which are the largest fiduciary & trust companies in St. Gallen?
- By estimated headcount, OBT AG, WIESER Wirtschaftsprüfung AG, steuerpartner ag Steuer- und Wirtschaftsberatung are among the largest providers. The ordering is based on estimate bands, not exact figures.
- How can I filter all fiduciary & trust companies by size and region?
- Alpintel search covers all 710,000 Swiss companies with filters for industry, headcount, revenue, region and ownership.