By your side at every stage of your company's life
Delegate your regulatory obligations, identify risks, optimise your accounting and tax choices — with an accountant who listens and supports you proactively as you grow.
Solutions tailored to every situation
We approach each of your challenges from a fresh, independent angle, as a partner: a sound view, enriched by the breadth of our expertise — accounting, advisory, audit, digital transformation. Beyond advice, our priority is to give you maximum security, and let you step back in a safe setting to weigh the consequences of the direction you give your company.
Four complementary areas of expertise
Accounting
Processing your financial data, managing filings and year-end documents — for a smooth, optimised close.
Audit
Impartial analysis, process optimisation and strategic support to secure your growth.
Management control
Effective predictive tools and expert support to steer your growth.
Legal & Tax
Our lawyers and tax specialists support your projects and secure your decisions, close to your concerns.
A clear way of working, built for quality
A simple organisation and firm commitments on method, for a high standard on every engagement.
A dedicated team
Every engagement is handled by a named team who knows your file and your industry.
A single point of contact
One lasting contact person who answers you, coordinates the work and commits on behalf of the firm.
Continuous monitoring
Tax, accounting, e-invoicing reform: our teams rely on ongoing technical monitoring.
A clear debrief
Every engagement ends with a personal walkthrough: you understand our work and what it changes for you.
From day-to-day accounting to the projects that matter
What you gain
Regulatory peace of mind
Your accounting and tax obligations are handled day to day, without unpleasant surprises.
Reliable, usable information
Accurate, up-to-date figures, presentable to banks and third parties.
Controlled taxation
Accounting and tax options studied in your context, for fair taxation.
Risks identified early
The risks inherent to your business are spotted early — the better to manage them.
Support for your projects
Creation, investment, growth: every project deserves a forward-looking analysis.
Better governance
A pragmatic read of your financial position, so you can decide with confidence.
Three levels of support, the same standard
The difference between offers isn't the number of meetings: it's what you do with your numbers. Each formula adapts to the size of your company and the scope of your needs — from the sole trader to the multi-entity group.
TREVYS Essential
Your accounting and tax obligations are kept, checked and filed on time.
“I want to delegate my bookkeeping and have peace of mind.”
TREVYS Steering
Your numbers become readable: indicators, management checkpoints, anticipated deadlines.
“I want to understand my numbers, not just know them.”
TREVYS Direction
Budget, cash flow, arbitration: an outsourced finance function by your side.
“I want someone by my side to steer my company.”
Whatever the formula, the principle stays the same: a dedicated team, a single point of contact, fixed fees known in advance. We set the right level together, during a first conversation.
We adapt to your organisation
We don't impose our own tool: we work in yours. Tiime, Pennylane, Sage, Cegid, Oracle, Power BI… we master the main platforms on the market and connect to your existing information system, with no disruption for your teams. The goal: make your data reliable and give you back time, whatever your environment.
Tiime
Real-time accounting and invoicing for freelancers and small businesses.
Pennylane
Collaborative financial management platform for founders and accountants.
Sage
Accounting and payroll management suite, from the desktop to the enterprise.
Cegid
Accounting and tax solutions for firms, mid-caps and large accounts.
SAP
The reference ERP for mid-caps and large groups — finance, procurement, production.
Oracle
ERP and financial systems for complex, international organisations.
Microsoft Dynamics 365
Microsoft's ERP and CRM, integrated with the Office 365 ecosystem.
Power BI
Dashboards and decision-making reports connected to your data.
Using another tool? We adapt to that too — just tell us which.
Entrust us with your accounts.
A seamless handover and a clear first read of your situation.
Request a quoteYour questions about accounting expertise
How much does an accountant cost for an SME?
Fees depend on transaction volume, headcount and the scope of the engagement (bookkeeping, review, payroll, advisory). At Trevys, fees are fixed and set out in an engagement letter: you know in advance what's included, with no surprise invoice at year-end. For a small business, market rates typically range from €150 to €400 excl. VAT per month; an SME with payroll and reporting is above that.
How do I switch accountants mid-year?
It's possible at any time, and simpler than most people think. We contact your previous firm (a courtesy letter required by the code of ethics), retrieve balances, history and filings, and take over the file without interruption. You don't have to wait for year-end or manage the transition yourself.
What's the difference between an accountant and a statutory auditor?
The accountant prepares and presents your accounts, advises and supports you day to day: they work for you. The statutory auditor certifies the accounts in the interest of third parties (shareholders, banks, the State): theirs is an independent, mandatory audit above certain thresholds. The two roles cannot be held for the same company.
Is an accountant mandatory?
No French law requires it: a business owner can keep their own books. But preparing annual accounts carries personal liability, and mistakes (VAT, non-deductible expenses, depreciation) usually cost far more than the fees would. Using a professional registered with the Ordre also strengthens your relationships with banks and tax authorities.
What documents do we need to send you, and how?
Purchase and sales invoices, bank statements, expense reports, contracts and payroll data. Everything goes through your secure client portal: you upload, and collection and reconciliation are largely automated. No more binders dropped off at the firm at year-end.
How long does it take to get our financial statements?
Our commitment: accounts presented within three months of closing, with a debrief meeting to draw useful decisions from them. We also produce interim statements during the year — a balance sheet discovered eight months after closing no longer helps you steer the business.