{"id":440,"date":"2026-04-01T21:04:18","date_gmt":"2026-04-01T21:04:18","guid":{"rendered":"https:\/\/trevia.codia.ch\/portrait\/"},"modified":"2026-06-25T02:38:01","modified_gmt":"2026-06-25T02:38:01","slug":"portrait","status":"publish","type":"page","link":"https:\/\/trevia.codia.ch\/en\/portrait\/","title":{"rendered":"Portrait"},"content":{"rendered":"\t\t
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Portrait<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Nadja Kellenberger<\/h1>\t\t\t\t<\/div>\n\t\t\t\t
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Certified Finance and Accounting Specialist (Federal Diploma)
Trustee Expert Candidate

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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.<\/p>

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.<\/p>

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.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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About Trevia<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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The company name Trevia is derived from the Latin term \u2018tres viae\u2019, meaning \u2018three paths\u2019. It represents the three core values that form the foundation of our daily work in the fiduciary sector: <\/p>

Clarity<\/strong> \u2013 accurate bookkeeping and clear financial information<\/p>

Trust <\/strong>\u2013 reliable tax and compliance solutions<\/p>

Growth<\/strong> \u2013 strategic guidance with a long-term perspective<\/p>

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. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Trusted Network of Specialists<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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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. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Matthias Gartenmann<\/h5>\t\t\t\t<\/div>\n\t\t\t\t
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lic. iur., Attorney at Law
Certified Tax Expert \n<\/p>\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t\twww.tax-boutique.ch<\/a><\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Rolf Schmid<\/h5>\t\t\t\t<\/div>\n\t\t\t\t
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Dr. iur., Attorney at Law

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\n\t\t\t\t\twww.ssg-law.ch<\/a><\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Claudia Giusto<\/h5>\t\t\t\t<\/div>\n\t\t\t\t
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lic. iur., Attorney at Law
Specialist in Family Law<\/p>\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t\twww.ssg-law.ch<\/a><\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Contact us now<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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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. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tFind out more<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

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 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-440","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/trevia.codia.ch\/en\/wp-json\/wp\/v2\/pages\/440","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/trevia.codia.ch\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/trevia.codia.ch\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/trevia.codia.ch\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/trevia.codia.ch\/en\/wp-json\/wp\/v2\/comments?post=440"}],"version-history":[{"count":87,"href":"https:\/\/trevia.codia.ch\/en\/wp-json\/wp\/v2\/pages\/440\/revisions"}],"predecessor-version":[{"id":1432,"href":"https:\/\/trevia.codia.ch\/en\/wp-json\/wp\/v2\/pages\/440\/revisions\/1432"}],"wp:attachment":[{"href":"https:\/\/trevia.codia.ch\/en\/wp-json\/wp\/v2\/media?parent=440"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}