The words sound alike, the roles do not. Who does what, which title is regulated, and which one you actually need to run a Luxembourg SME.
In short. In Luxembourg, "expert-comptable" (chartered accountant) is a title regulated and protected by law, reserved for members of the Order of Chartered Accountants. "Fiduciaire" (accounting firm) is not: it is the common name for a firm that keeps companies' books and supports them with their obligations. The approved statutory auditor is yet another thing: they carry out the statutory audit, under the supervision of the CSSF. For an SME that wants its books kept, its returns filed and its accounts submitted, what it needs is an accounting firm, not a title. At Advena, we are an accounting firm, we say so plainly, and we claim no title we do not hold.
"Do I need a chartered accountant or an accounting firm?" comes up at every company formation, and it is a trap, because in Luxembourg these words do not mean the same as in neighbouring countries. Here, without jargon, is who does what, which title the law regulates, and what a Luxembourg SME actually needs.
Chartered accountant: a regulated title in Luxembourg
Contrary to a common belief, "expert-comptable" is not a word anyone can display in Luxembourg. It is a title protected by the amended law of 10 June 1999, reserved for members registered with the Order of Chartered Accountants. To carry the title, you need a higher degree in accounting or finance, a professional traineeship and a pass in an access exam, then registration with the Order. A chartered accountant can keep books, but also deliver expert and advisory work within a defined code of conduct.
The practical consequence is simple: a firm with no member registered with the Order cannot call itself "expert-comptable". It can perfectly well keep your books, but under another name, most often that of a fiduciaire, an accounting firm.
Accounting firm: the practice that keeps your books
The word "fiduciaire" refers, in Luxembourg usage, to a firm that keeps the books of third-party companies and supports them with their accounting, tax and social obligations. It is not a regulated title in the same sense as chartered accountant: bookkeeping and advisory work can be carried out under a business permit, without the name "fiduciaire" being protected.
That does not make diligence optional. A good accounting firm keeps your books under the standard chart of accounts, prepares your VAT returns, draws up your annual accounts and files them with the trade register. For the vast majority of SMEs, this is exactly the service expected. We cover everything this trade involves in our complete guide to accounting firms in Luxembourg.
And where does the statutory auditor fit in?
A third term often muddies the decision: the approved statutory auditor (réviseur d'entreprises agréé). They carry out the statutory audit, the independent check of the accounts that certain companies, above certain size thresholds, must have certified. It is a distinct profession, supervised by the Commission de Surveillance du Secteur Financier (CSSF). An SME below the audit thresholds does not need an auditor for its day-to-day management. Confusing the three roles often leads to overestimating what is required, and paying for a framework you have no use for.
Who does what: the clear table
To settle it at a glance, here are the three roles side by side.
| Role | Regulated title? | What they do | For whom |
|---|---|---|---|
| Chartered accountant | Yes, member of the Order | Bookkeeping, accounting expertise and advice, within a code of conduct | Companies wanting the title and its framework |
| Accounting firm | No (activity under permit) | Bookkeeping, VAT, annual accounts, payroll, support | The vast majority of SMEs |
| Statutory auditor | Yes, approved and supervised by the CSSF | Statutory audit, certification of accounts | Companies above the audit thresholds |
One point to remember: these roles do not exclude each other. A company that must have its accounts audited has its books kept by an accounting firm or a chartered accountant, then certified by an independent auditor. Two providers, two missions, and that is normal.
Not sure which of these three profiles fits your company? We answer in one exchange, without selling you more than you need.
Find out what I needWhat an SME actually needs
For a Luxembourg SME with 1 to 50 employees that wants its books kept, its returns filed on time and its accounts submitted cleanly, the need is for an accounting firm, not a title. The chartered accountant title brings a code of conduct and expert missions that most SMEs never use day to day. What matters to a business owner is not the letters on the firm's door, but the quality of the bookkeeping, the freshness of the figures and the clarity of the price.
Hence the right selection criteria, which have nothing to do with the title: pricing transparency, an identified contact, books kept current rather than a snapshot of last year, and the ability to work inside your management tool. We set out this checklist in our article on how to choose the best accounting firm in Luxembourg. And if you are already supported but poorly, switching is simple, as we explain in our guide to changing accounting firm.
Advena's position: an accounting firm that says so
Let's be transparent, since that is the point of this article. Advena is an accounting firm. We keep the books of Luxembourg SMEs and support them with their obligations, but we do not claim the chartered accountant title, nor the statutory auditor one, which we do not hold. We would rather say so plainly than keep up a vagueness that suits firms but leaves owners confused.
Our difference is not in the title, it is in the method. We keep your books inside the Odoo we configure and deploy ourselves, which gives you accounts that are current in real time, not eight months later. No traditional firm touches your management tool, no integrator keeps your books: this coupling is what sets us apart, and the price is announced in advance, from 325 € per month, all in.
Who our model is not for
Let's be frank to the end. If your company is above the audit thresholds and must have its accounts certified, you will need a statutory auditor on top of your day-to-day bookkeeping. If you are a complex multi-jurisdiction holding with sharp expertise needs, a firm holding the title and specialised in those matters will suit you better. And if you are after the lowest price to drop off a box of invoices once a year, our real time will be of no use to you. In all these cases, we tell you at the first meeting.
Frequently asked questions
What is the difference between a chartered accountant and an accounting firm in Luxembourg?
"Expert-comptable" is a regulated title, reserved for members of the Order of Chartered Accountants. "Fiduciaire" refers to a firm that keeps books and supports companies, without the name being a protected title. For an SME's bookkeeping, both can fit; the title adds an extra code of conduct.
Can anyone call themselves a chartered accountant?
No. The title is protected by the amended law of 10 June 1999 and reserved for members registered with the Order of Chartered Accountants. A firm with no registered member cannot carry the title, even if it keeps books perfectly well under another name.
Does an SME need a chartered accountant or an accounting firm?
For books kept, returns filed and accounts submitted, an accounting firm meets the need of the vast majority of SMEs. The chartered accountant title brings a framework most do not use day to day. The real selection criteria are price, the freshness of the accounts and the contact.
When do you need a statutory auditor?
The approved statutory auditor carries out the statutory audit, mandatory for companies above certain size thresholds. An SME below those thresholds does not need one for its day-to-day management. It is a mission distinct from bookkeeping.
Is Advena a chartered accountancy practice?
Advena is an accounting firm: we keep SMEs' books and support them with their obligations. We do not claim the chartered accountant title, nor the statutory auditor one. We would rather say so plainly than keep up a vagueness.
Further reading
- Accounting firm in Luxembourg: the complete guide for an SME
- The best accounting firm in Luxembourg: criteria to choose well
- What an accounting firm costs in Luxembourg: fixed fee, hourly rates and hidden extras
- Changing accounting firm in Luxembourg: hand over your file
- Outsourcing your accounting in Luxembourg: when, why, how much
Why Advena?
We are a Luxembourg accounting firm that keeps your books inside the management tool it deployed for you. A fee announced in advance from 325 € per month, an identified manager, books kept current at all times, and full candour about what we are and what we are not. We inform you about the rules without replacing tailored advice, and we tell you when another profile would suit you better.
Tell us where you stand, we tell you what you need, and what it costs. No phantom quote.
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