Portrait

Nadja Kellenberger

Certified Finance and Accounting Specialist (Federal Diploma)
Trustee Expert Candidate

I have more than 20 years of experience in the fiduciary sector and in providing comprehensive support to SMEs and private clients. My areas of expertise include financial and payroll accounting, VAT, annual financial statements and tax advisory services.

I gained my professional experience in various fiduciary firms in Eastern Switzerland, as well as during several years with a fiduciary firm in the city of Zurich. This has given me a broad understanding of a wide range of industries and client engagements.

As a fiduciary professional, I value a personal, reliable and straightforward approach. My focus is on providing pragmatic solutions and tailored advice that reflects the individual needs of each client.

About Trevia

The company name Trevia is derived from the Latin term ‘tres viae’, meaning ‘three paths’. It represents the three core values that form the foundation of our daily work in the fiduciary sector:

Clarity – accurate bookkeeping and clear financial information

Trust – reliable tax and compliance solutions

Growth – strategic guidance with a long-term perspective

Our goal is to reduce complexity and provide confidence. Sustainable success is built on a clear understanding of financial information and its effective use in decision-making.

Trusted Network of Specialists

For more complex matters, we work closely with a trusted network of local specialists. This allows us to provide you with expert guidance, even in demanding tax and legal matters.

Matthias Gartenmann

lic. iur., Attorney at Law
Certified Tax Expert

Rolf Schmid

Dr. iur., Attorney at Law

Claudia Giusto

lic. iur., Attorney at Law
Specialist in Family Law

Contact us now

We would be pleased to assist you personally. Please feel free to contact us by email or phone. We look forward to hearing from you.

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