Tax return services in Switzerland for individuals and businesses

Save time. Avoid mistakes. Move forward with peace of mind.

Entrust your tax return to DYN Group: our experts handle your case from A to Z, in full compliance with Swiss tax legislation.

Our services

Whether you are an individual, self-employed or a business owner, our tax specialists support you at every stage: preparation, planning and filing of your tax returns. You meet your tax obligations without spending valuable time or increasing risks.

Why choose DYN Group?

Since 2009, DYN | GROUP has been supporting entrepreneurs and individuals in French-speaking Switzerland through an innovative fiduciary approach based on digitalization, quality, and human commitment.

Recognized expertise

Ranked among the best tax and fiduciary experts in Switzerland in 2025 by PME & Bilanz.

Personalized approach

Each client benefits from tailored support, adapted to their situation and goals.

Process digitalization

Modern tools and secure data hosting in Europe for a smooth and reliable service.

Local presence

Offices in Geneva, Lausanne, Morges, Zug and Villars, providing close support wherever you are.

Contact us

Your fiduciary contact

Thomas Genilloud

Partner

Finance and accounting specialist with a Federal Diploma
Licensed auditor (FAOA)

Sandrine Debétaz

Partner

Certified Tax Expert, specialized in Swiss and international taxation.

Copyright © DYN Group. All rights reserved.

Thomas Genilloud
Associate

Specialist in Finance and Accounting with a Federal Diploma Licensed Auditor (ASR)

Biography

Thomas Genilloud has been a partner at DYN since its founding in 2015. Proficient in both taxation and accounting, he enjoys using his skills to assist individuals with complex tax matters as well as providing general business advisory services. He also takes great satisfaction in guiding and advising clients through decision-making processes, particularly in the areas of company creation, legal structuring of assets (holdings), real-estate acquisitions and related financing, as well as all financial and legal matters related to family affairs.

Pragmatic and efficient, Thomas possesses strong analytical, synthesis, and problem-solving abilities. His interpersonal skills and attentive listening make him an excellent advisor.

 

Education

Specialist in Finance and Accounting with a Federal Diploma
Non-certified Tax Expert
Licensed Auditor (ASR)

Languages

French – English

Engagement

Member of FIDUCIAIRE|SUISSE – Vaud Section

Sandrine Debétaz
Associate

Biographie

Sandrine is a Certified Tax Expert specialising in Swiss and international taxation. Her main areas of expertise are corporate and shareholder taxation, as well as SME taxation. She has solid expertise in the legal, economic and tax aspects of mergers and acquisitions (both buy-side and sell-side) and corporate finance, cross-border transactions and restructuring. Sandrine advises all types of companies and non-profit organisations, as well as private clients on their estate planning. Responsive, pragmatic and passionate, she can assist you in all areas of your tax planning.

Education

Swiss Federal Diploma for Tax Expert (Switzerland)
Master in Accounting, Control and Finance, HEC Lausanne (Switzerland)
Master in Management, HEC Lausanne (Switzerland)

Languages

French – English – German

Engagement

OREF, Ordre Romand des experts fiscaux diplômés
ASEFiD, Association Suisse des Experts Fiscaux Diplômés
EXPERTsuisse, Association suisse des experts en audit, fiscalité et fiduciaire
IFA – International Fiscal Association

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