Buchhaltung Treuhand Trediag GmbH — Kasernenstrasse 1, 8180 Bülach, Switzerland

The enthusiastic, reliable, competent, and highly courteous team led by Stefan and Melania Santos leaves no need unmet in their areas of expertise. I am very happy to be, and will remain, a customer of Trediag, who consistently impress me with their straightforward processes and detailed consultations.

kevin neff

Absolutely satisfied. Friendly team, available at any time, fast execution. This trust office has been supporting us with tax and consulting matters for years. A highly competent partner, whether for business or personal matters. We can't imagine life without them. Keep up the good work. Beerli Driving School and Zwärgehüsli Daycare Center.

Stefan Beerli

Trediag GmbH provided excellent service for our relatively complicated tax return. Competent and efficient (and even in English, as my husband is English), the employee assigned to us answered all of our questions within a short time and completed and submitted our tax return for us.

Doris Edwards

Trediag GmbH has been supporting us for years with accounting, trust, payroll, and taxes, providing expert advice and support at any time. Thank you very much for the excellent collaboration. We look forward to many more such pleasant years. MAX Innovation AG

Andreas Koch

For years, this has been our small, yet refined trust office, with a flair for our clients. They assist with tax matters, accounting, and employment law. Thanks to the experience of their staff, they can also serve larger companies. If you want fast, competent service, this is the right place for you.

martin lange

Trediag GmbH operates very professionally and reliably. I particularly appreciate the quality in the areas of fiduciary services, accounting, and consulting.

Arthur A.