How to choose
How to find an English-speaking tax advisor in Switzerland
Find an English-speaking tax advisor or Treuhand in Switzerland: tax at source and the NOV, cantonal deadlines, protected titles, US filings and fees.
Treuhand & accounting · Opfikon
ONE! Treuhand
Fiduciary firm near Zurich offering private tax returns, accounting, payroll and VAT for individuals and small businesses, including crypto tax topics.
Checked by our editors · not yet confirmed by the business. We put this profile together from public information and checked it by hand; ONE! Treuhand hasn’t confirmed the details yet, so some may be out of date.
Is this your business? Claim this listing · Ask us to remove it
Services
- private tax returns
- accounting
- payroll
- VAT
- crypto taxation
Languages
English, German
Where
Listed under
Details
- Legal name
- ONE! Treuhand GmbH
- Listed since
- 24 September 2026
- Last updated
- 24 September 2026
Other treuhand & accounting in Opfikon
- Fuchs & Partner GmbH Fuchs & Partner provides Swiss and US tax advisory, tax return preparation, accounting and CFO services for individuals, expatriates and…
Send an enquiry
Sent. Thank you.
Your enquiry is on its way to ONE! Treuhand. They’ll reply to you by email, usually within a few working days.
Nothing arrived after a week? Check your spam folder, or contact another provider.
Every listing is checked by hand before it goes live. We don’t publish ratings.