About Us

Locally rooted.

Nationally connected.

Mission

Close and personal.

Collective reach.

Trusso is a new fiduciary group for ambitious SMEs. Five hubs in Switzerland, a shared network, the same goal: to strategically guide SMEs. From daily operations to the next growth phase.

We combine classic fiduciary excellence with modern platform power. Locally present, strong in our network. It's that simple. It's that consistent.

Managing Partners

Adrian Schaller

Managing Partner / Director
Chartered Accountant
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Josia Röhm

Managing Partner / Director
Chartered Accountant
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Christoph Thommen

Managing Partner
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Our Leadership Team

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Martin Dettwiler

Partner
Certified Tax Expert
Partner
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David Klein

Partner
Chartered Accountant
Partner
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Thomas Koller

Chairman of the Board
Certified Fiduciary Expert / Licensed Audit Expert
Verwaltungsrat
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Antonio Marin

Partner
Certified Public Accountant / Special Authorization for VAG Audits
Partner
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Renzo Peduzzi

Partner
Chartered Accountant
Partner
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Josia Röhm

Managing Partner / Director
Chartered Accountant
Geschäftsführend
Verwaltungsrat
Partner
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Adrian Schaller

Managing Partner / Director
Chartered Accountant
Geschäftsführend
Verwaltungsrat
Partner
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Emil Walt

Partner
Certified Public Accountant / Special Authorization for VAG Audits
Partner
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