Altermès is a young, innovative multidisciplinary firm that combines financial expertise with technological consulting. We support companies of all sizes — from start-ups and SMEs to CAC 40 groups — across four pillars: financial services and compliance, sustainability and CSR, digital transformation, and legal services. Our teams include chartered accountants, auditors, data scientists, developers, asset managers, and tax lawyers who work side by side to deliver integrated, high-value solutions. With offices in Paris, Versailles, and Lisieux, we're rooted in France but think in a wider business context.

Our name says it all. 'Al' draws from the Latin aliter (in another way), alto (to progress, to elevate), and alter (others). 'Hermès' is the messenger of the gods and protector of merchants. Together, Altermès reflects our determination to place advice and the search for appropriate solutions at the heart of everything we do. We are a team of women and men who share five core values — Integrity, Excellence, Authenticity, Cooperation, and Audacity — and who are convinced that continuous innovation is what motivates top performers. Our clients expect an integrated, skilled team, and growing collectively is exactly what we aim for.

We advise and support companies across four interconnected practice areas. In Finance & Compliance, we provide chartered accounting, statutory audit, financial valuation, wealth management, risk mapping, and cash management. In Sustainability, we help clients structure their CSR strategy, produce CSRD-compliant reporting, and measure ESG indicators. In Digital Transformation, we accelerate the digitalization of finance functions through business intelligence, process mining, RPA, and custom-built data solutions. Through Altermès Avocats, our tax lawyers provide a global, operational, and cross-functional approach to corporate tax strategy, transfer pricing, and regulatory compliance.

The founders of Altermès share a single raison d'être: to create the conditions of trust to build sustainable growth. We believe that a company's financial data reflects the commitment and talent of its people — and that our role is to be the guardian of its accuracy, helping managers identify solutions at every stage of their company's development.

Five values define who we are and how we work: Integrity — honesty and fairness in everything we do, generating a professional environment we can all be proud of. Excellence — a relentless commitment to impeccable quality in every assignment. Authenticity — we bring our genuine expertise and our real selves to client relationships. Cooperation — learning from each other, sharing the pleasure of working together, and building winning collaboration across disciplines. Audacity — stepping out of our comfort zone and embracing innovation as a daily discipline.

We uniquely combine the technical rigour of a major accounting and audit firm with the agility and innovation of a start-up. Our multi-disciplinary team — data scientists, developers, chartered accountants, auditors, asset managers, and tax lawyers under one roof — means clients receive a fully integrated advisory experience without silos. Our speakers bring dual experience from both consulting firms and corporates. We offer assignments of any duration, clear fee structures (subscription or fixed price), and a multi-sector scope from utilities and infrastructure to healthcare and new technology. Altermès Formation is also Qualiopi-certified, offering eligible training programmes financed through OPCO.

Sustainability is one of Altermès's four core practice areas. We combine our CSR and IT expertise to help companies determine KPIs, structure ESG data, and present it in intelligible dashboards. From voluntary CSR strategy and carbon footprint measurement to mandatory CSRD reporting and double materiality analysis, our dedicated teams guide organisations through both the strategic and operational dimensions of their sustainability journey. We also assist with impact finance projects and have experience in VER carbon certification assessments for international clients.