Entrust your tax return to DYN Group: our experts handle your case from A to Z, in full compliance with Swiss tax legislation.
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.
Your tax situation is unique. Our experts analyze your file in detail, identify all applicable deductions and prepare your tax return with precision — for full compliance and no unpleasant surprises.
Your tax obligations require expert attention. Our specialists support your company in meeting its legal requirements and in long-term tax planning, with rigor and confidentiality.
Making the right tax decisions today means preserving your wealth tomorrow. We analyze your overall situation and offer sustainable, personalized strategies that comply with Swiss tax law.
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.
Ranked among the best tax and fiduciary experts in Switzerland in 2025 by PME & Bilanz.
Each client benefits from tailored support, adapted to their situation and goals.
Offices in Geneva, Lausanne, Morges, Zug and Villars, providing close support wherever you are.
Partner
Finance and accounting specialist with a Federal Diploma Licensed auditor (FAOA)
Partner
Certified Tax Expert, specialized in Swiss and international taxation.
Thomas Genilloud
Associate
Specialist in Finance and Accounting with a Federal Diploma Licensed Auditor (ASR)
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.
Specialist in Finance and Accounting with a Federal Diploma
Non-certified Tax Expert
Licensed Auditor (ASR)
French – English
Member of FIDUCIAIRE|SUISSE – Vaud Section
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.
Swiss Federal Diploma for Tax Expert (Switzerland)
Master in Accounting, Control and Finance, HEC Lausanne (Switzerland)
Master in Management, HEC Lausanne (Switzerland)
French – English – German
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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