Much more than an accounting firm
Founded in 2018, Trevys supports business owners beyond compliance: in their decisions, their transformations and their growth. Two areas of expertise, one ambition — creating lasting value.
Continuous growth since 2018
Since 2018, the firm has grown step by step, around one guiding principle: putting numbers to work for decisions.
- 2018
The firm is founded
John Lévy founds Trevys in Paris, initially focused on organisational, financial and information-systems advisory. From the start, the ambition is to support business owners beyond the numbers, giving them an operational and strategic read on their business.
- 2020
Structuring the accounting practice
Trevys then structures its accounting activity around the chartered accountant qualification and title. A natural choice to strengthen the firm's credibility, secure its engagements and offer clients an added layer of trust. This structuring lets Trevys bring together two complementary areas of expertise today: advisory and accounting.
- 2023
Building the ecosystem
Trevys brings together complementary companies and experts: data and predictive steering, statutory audit, employment law, software publishing. Clients get a complete answer, with a single point of contact and clear accountability.
- 2026
Technology and e-invoicing
The firm industrialises the use of automation and artificial intelligence in its engagements, and becomes a recognised player in the e-invoicing reform — for its clients as well as the profession, where its founder acts as a reference.
- 2027
Focus on AI and AI project management
Trevys puts artificial intelligence to work for the finance function: automated accounting production, augmented management control, more reliable closings and decision support. The firm supports finance departments through their AI projects end to end — choosing use cases, accounting data quality, organising the finance function and change management — with the project-management rigour it has practised from the start.
What gets us out of bed
Three standards, cultivated like a craft — worth more than a long sales pitch.
A passion for rigour
Rigour isn't a pose, it's a habit: re-reading what seems settled, checking what everyone takes for granted, refusing “good enough” even when no one would notice. A Trevys file should be open-able by anyone, at any time, without flinching.
A taste for precision
A number isn't almost right: it's right, or it's useless. Precision is what turns bookkeeping into a decision-making tool — margins you can compare, cash flow you can project, a result you can explain line by line.
A sense of service
Answer. Fast, clearly, and to the question asked. Behind every request is a business owner who has to decide: our job is to make that decision easier — not to hand back the complexity with extra vocabulary.
The values that drive us
Commitment
We fully commit to every engagement, with the same high standard, whatever its size.
Excellence
We constantly pursue quality, precision and reliability in our work.
Innovation
We evolve our methods, tools and skills for ever more effective solutions.
Closeness
We build lasting relationships founded on listening, availability and trust.
Knowledge-sharing
We share our knowledge to help clients better understand their challenges and decide.
Legitimacy in the service of the profession
Our founder, John Lévy, a chartered accountant, is actively involved in the life of the profession.
Elected within the profession
Elected member of the Paris Île-de-France Regional Council of the Ordre des experts-comptables.
E-invoicing reference
On the reform and the digital transformation of firms and companies.
Regular speaker
For professional bodies and finance departments.
Lecturer, Master's in Accounting & Audit
Involved in training the next generation of accounting professionals.
When I founded Trevys, I didn't want to build yet another accounting firm. I wanted a firm able to support business owners through the deep transformations of their environment. Expectations have changed, professions evolve, technology opens new possibilities. Our role is to help companies make the most of it, without ever losing sight of what matters: the human relationship, advice and trust.
John LévyFounder — Chartered AccountantCommitments you can verify
The people of Trevys
