Fiduciary accounting firm in Luxembourg, authorised, multilingual, fixed fee.
Financial Services Luxembourg is an authorised fiduciary accounting firm in the Grand Duchy (authorisation 10077274), subject to AED supervision for AML/CFT purposes. A fiduciary orchestrates accounting, tax, structuring and compliance between the entrepreneur and the Luxembourg ecosystem. We cover company formation, SOPARFI, payroll, substance and fund services.
A Luxembourg fiduciary is an authorised firm that handles, on behalf of its clients, the accounting, tax and social obligations, domiciliation and governance of Luxembourg entities. FSL holds authorisations 10077274/2 (activities ancillary to the expert-comptable profession) and 10077274/0 (accounting).
Business licenses 10077274/2 (activities ancillary to the expert-comptable profession) and 10077274/0 (accounting), issued by the Ministry of the Economy and subject to AED supervision for AML/CFT purposes; AML framework, law of 12 November 2004. Authorisation publicly verifiable on guichet.public.lu.
Key takeaway
- FSL is an authorised fiduciary accounting firm (10077274), subject to AED supervision for AML/CFT purposes, verifiable on guichet.public.lu.
- One fiduciary for accounting, tax, structuring and compliance.
- 18 years of experience, 9 languages, fixed fee and quote within 48 hours.
What is a fiduciary in Luxembourg?
A fiduciary is an authorised firm that handles accounting, tax, payroll, domiciliation and governance of Luxembourg entities on its clients' behalf. It is the operational interface between the company and the authorities: ACD (direct taxes), AED (registration and VAT), RCS (register) and CCSS (social security).
Fiduciary activity requires a business licence and supervision. FSL holds authorisations 10077274/2 (activities ancillary to the expert-comptable profession) and 10077274/0 (accounting), subject to AED supervision for AML/CFT purposes and publicly verifiable on guichet.public.lu.
Fiduciary, accountant, expert-comptable: who does what?
The fiduciary is the authorised structure delivering the full range of services. "Accountant" describes the bookkeeping function. The "expert-comptable" (expert-comptable) is a regulated title held under the Ordre des Experts-Comptables (OEC). Roles, thresholds and the cases requiring an approved statutory auditor are set out in our comparison of Luxembourg accounting professions.
FSL is a licensed accounting fiduciary; for engagements that specifically require the expert-comptable title or a statutory audit by an approved auditor, we work with the duly qualified professionals. You keep a single point of contact.
What does a fiduciary handle?
The scope covers LuxGAAP bookkeeping, annual accounts and RCS filing, VAT, corporate and personal tax, outsourced payroll and CCSS filings, domiciliation and registered office, directorship and substance, and compliance (AML/KYC, DAC6, CRS/FATCA).
Beyond execution, a good fiduciary adds advice: structure choice, controlled optimisation, preparation of financing, an acquisition or a sale, from formation to consolidation.
Why choose a licensed, supervised fiduciary?
Licensing and supervision guarantee an ethical framework, an AML/KYC obligation and professional liability. For an international or wealth client base, it is a mark of security, and a criterion banks look at on onboarding.
Always check your provider's authorisation: ours (10077274) is verifiable in one scan on guichet.public.lu.
How to choose your fiduciary in Luxembourg
Four criteria: licensing and supervision, breadth of competence (accounting, tax, funds, directorship), responsiveness and pricing transparency (readable package, fast quote), and the ability to support international work (languages, tax treaties, substance). We publish our verifiable proof and references on all four.
Switching fiduciary is simple: file audit, history recovery, VAT and payroll handover without a gap, first reporting by the 15th of the following month. The full document-by-document procedure is set out on the switching accounting firm page.
An AI-augmented fiduciary
We combine a licensed accountant with AI-assisted workflows (automated collection, OCR entry, intelligent bank reconciliation). Automation makes execution reliable and fast; decisions and advice stay human, supervised and signed.
The result: accounts filed on time, clear visibility on your numbers and a controlled cost.
Who this is for
- Entrepreneurs and SMEs seeking a fiduciary accounting firm in Luxembourg
- Holdings, SOPARFIs and international investors
- Family offices and clients requiring a premium standard
- Foreign companies setting up a Luxembourg subsidiary
What our fiduciary does
- Accounting, annual accounts and eCDF filing (Lux GAAP, IFRS)
- Tax: CIT, MBT, NWT, VAT, transfer pricing
- Company formation, SOPARFI, holding, domiciliation
- Payroll, CCSS, substance and directorship
- Fund services and ecosystem coordination
Ready to structure your fiduciary accounting firm?
Free first call within 24 hours. Dedicated adviser, NDA from first contact.
Preparation checklist
Get the list of documents and steps to start without friction.
Official sources and verification
This page is written and reviewed by Mickaël LOC, licensed accountant in Luxembourg (business permit 10077274). The rules cited can be checked with the competent authorities.
Frequently asked questions
What is a fiduciary in Luxembourg?
A fiduciary is an authorised firm that handles the accounting, tax, domiciliation and governance of Luxembourg entities on behalf of its clients. It is the operational interface between the company and the authorities (ACD, AED, RCS, CCSS).
Is FSL an authorised fiduciary?
Yes. FSL holds authorisations 10077274/2 (activities ancillary to the expert-comptable profession) and 10077274/0 (accounting), subject to AED supervision for AML/CFT purposes. The authorisation is publicly verifiable on guichet.public.lu.
Difference between a fiduciary and an expert-comptable?
The fiduciary is the authorised structure delivering the full range of services. The expert-comptable is a regulated title (OEC). FSL is a licensed accounting fiduciary and relies on qualified experts-comptables and approved auditors for engagements that require them.
How many languages do you work in?
9 operating languages: French, English, German, Spanish, Italian, Portuguese, Luxembourgish, Chinese and Russian.
Request a quote
Reply within 24 business hours. NDA from first contact.