Our services

Audit

In a constantly evolving economic environment, financial transparency has become a key pillar of trust. At DYN Audit, we support companies in the review, verification, and reliability of their accounts, helping to strengthen the credibility of their governance and financial reporting. Our experts provide an external, neutral, and professional perspective to ensure the compliance and robustness of your organization.

Our approach: transparency, rigor, and trust at the heart of your business

DYN Audit holds the accreditation of Approved Audit Expert granted by the Federal Audit Oversight Authority (FAOA).

Our experts are committed to delivering high-quality services, with full independence and a human approach tailored to each client’s reality.

Our commitments:

  • Provide audits in compliance with Swiss and international standards

  • Ensure the reliability and transparency of your financial statements

  • Strengthen the trust of your investors, partners, and employees

  • Deliver clear and constructive recommendations

  • Act with independence, rigor, and absolute confidentiality

 
 
Limited and ordinary audit of accounts


Limited and ordinary audits are legal obligations for companies that exceed certain thresholds. Our experts carry out these audits with precision and impartiality, while providing clear and educational support. The objective: to ensure that your annual financial statements faithfully reflect the economic situation of your company. Key services: Audit conducted in accordance with Swiss standards Analytical review and targeted verification of accounts Clear audit report compliant with legal requirements Assistance in the event of requests or inspections by authorities Advice on audit obligations and possible exemptions


Legal reminders: A limited audit is required if, on an annual average, the company employs more than 10 full-time equivalents (FTE).


Companies exceeding two of the following three criteria are subject to an ordinary audit: Balance sheet total exceeding CHF 20 million Annual turnover exceeding CHF 40 million Workforce exceeding 250 full-time positions Below these thresholds, companies may waive the limited audit with the consent of all shareholders.

Beyond limited audits, DYN Audit also carries out various types of statutory or contractual reviews. These specific engagements make it possible to certify the accuracy and compliance of particular financial situations.

Key services:

  • Review of the incorporation report (contributions in kind)

  • Review of capital increase reports

  • Audit in the context of a liquidation

  • Review during balance sheet revaluations or loss elimination

  • Interim audit (going concern and liquidation values)

  • Ad hoc certifications and compliance reports

An independent and proactive approach

At DYN Audit, every engagement is carried out with objectivity, precision, and transparency. We go beyond auditing: we also support you in understanding and improving your financial processes. Our ambition is to deliver tangible added value to your decision-making by strengthening the trust of all your stakeholders — executives, shareholders, partners, and employees.

 
 
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Your Audit experts

Sarah Gretillat

Partner
Certified Public Accountant
Approved Audit Expert (ASR)

Sergio Pereira

Director
Approved Audit Expert
Business Economist (HES)

Services that make the difference, experts who guarantee them. Discover DYN | Group’s services

Sarah Gretillat
Associé


Experte-comptable diplômée
Experte-réviseur agréée ASR

Biographie

Sarah Gretillat est associée au sein DYN Audit depuis 2022. Active dans le domaine de l’audit depuis quelques années, sa personnalité dynamique et rigoureuse est un atout pour effectuer le contrôle restreint de vos comptes annuels ou vous fournir d’autres prestations de révision.

Formation

Bachelor en sciences économiques
Master en Comptabilité, Finance et Controlling
Experte-comptable diplômée
Experte-réviseure agréée AS

Langues :

Français – Anglais – Espagnol

Sergio Pereira
Directeur

Expert-réviseur agréé
Economiste d’entreprise HES

Sergio Pereira intègre DYN en 2022 avec plus de 15 ans d’expérience en fiduciaire. Son parcours professionnel commence à l’office d’impôt du district de Moudon, puis il complète sa formation avec un bachelor à la Haute Ecole Gestion et d’Ingénierie du Canton de Vaud avant de rejoindre une fiduciaire de renom sur Lausanne. Pour terminer, il obtient l’agrément de l’ASR en qualité d’Expert-réviseur.
Riche d’une vaste expérience, il accompagne sur mesure les grandes entreprises, les groupes et les PME en matière de finances, fiscalité, digitalisation et audit.

Formation

Expert-réviseur agréé
Economiste d’entreprise HES

Engagement

Président de GYM Corcelles-le-Jorat
Entraineur unihockey kids

Languages

Français – Portugais – Anglais

Listed as one of the “Best tax and fiduciary experts in Switzerland 2025” by the PME & Bilanz newspaper.