Fiduciary for entrepreneurs, holdings and investors in Luxembourg.
Fiduciary and accounting firm in Luxembourg for entrepreneurs, holdings, international investors, SOPARFI structures, SMEs and family offices. A single point of contact, from formation to consolidation.
4.9/5119 Google reviewsWhat do you want to do in Luxembourg?
Pick your goal, we point you straight to the right solution.

Mickaël LOC
Founder & Managing DirectorAut. 10077274RCS B213987Comptable LuxembourgFiduciaire LuxembourgAt the helm of Financial Services Accountant Luxembourg, a licensed accounting fiduciary, Mickaël LOC has established himself as a go-to adviser for entrepreneurs, holdings, investors and funds setting up or restructuring in Luxembourg. Across more than seventeen years in practice, he has acted on the full company life cycle: formation, LuxGAAP and IFRS accounting, tax, consolidation, directorship and liquidation.
« Designing structures that banks trust, investors understand and regulators approve. »
Particularly assured on complex cross-border matters, he blends fiduciary rigour, senior-level advice and AI-driven automation, with a single point of contact and on-time delivery, across nine languages.
Havas · Bouygues Construction · Castel · CGA Presse · BPA Experts Associés · Valfidus Invest SCA
Luxembourg Business Infrastructure.
Accounting, tax, reporting, governance and operational compliance connected in a structured ecosystem. For entrepreneurs, holdings, investors and international groups.
Structured financial reporting
Legal and tax structuring
- SOPARFIart. 166 LIR
- Holdingspart. exemption
- SPFLaw 11.05.2007
- SARL, SARL-S, SALaw 10.08.1915
- IP Boxart. 50ter LIR
Tax and compliance
- CIT, MBT, NWTACD
- VAT, OSS, IOSSAED
- Transfer pricingBEPS
- ATAD, DAC6circ. 164/2
- AML, KYC, RBELaw 12.11.2004
Operational steering
- PayrollCCSS, RTS
- ControllingKPIs, P&L
- Fractional CFOBoard pack
- DashboardsReal time
- Substance, governanceDirectorship
An orchestration layer between you and the authorities.
Seven Luxembourg administrations, banks, notaries, lawyers, depositaries. We operate the interfaces, you keep strategic control.
Find your need by hub
Each hub gathers the services of a single intent. Click to explore every service and its guides.
Company setup & lifecycle
Set up, establish and run your Luxembourg company, without bouncing between providers.
12 services02Accounting, accounts & closing
LuxGAAP bookkeeping, annual accounts and RCS filing, by a licensed accounting firm.
12 services03Tax, VAT & payroll
Tax returns, VAT, payroll and tax incentives, on time, at the right rate.
8 services04Holdings, SOPARFI & wealth
Structuring participation holding and private wealth: SOPARFI, SPF, holding, family office.
16 services05Financial direction (CFO)
An outsourced CFO: reporting, management control, treasury, forecasting.
5 services06Investment funds
Structuring and administering a fund: RAIF, SIF, SICAR, SCSp, NAV, fund accounting, AIFM.
12 services07Governance & directorship
Directors, substance and corporate secretarial for solid Luxembourg governance.
10 services08Regulatory compliance
AML/KYC, DAC6, CRS/FATCA, ESG/CSRD, MiCA: staying compliant in a demanding framework.
7 servicesTrusted press and platforms
I'm looking for help with…
Six direct entry points, aligned to the most frequent Luxembourg obligations. Choose your need, we route you to the matching service pillar.
Form a company in Luxembourg
SARL, SA, SARL-S, SOPARFI, SPF, holding. From the business license to the RCS, turnkey.
Start my formation →Change accountant
Migration of your accounting and tax file to FSL in 4 steps, with no service interruption.
Migrate my file →Keep my books or consolidate my group
Monthly bookkeeping, annual accounts, eCDF filing, Lux GAAP or IFRS. Multi-entity consolidation and controlling.
Outsource my accounting →Optimise VAT and taxes
CIT, MBT, NWT returns, VAT registration, e-commerce OSS, IP Box, transfer pricing.
Audit my tax →Structure a SOPARFI or a holding
Participation exemption, ATAD substance, tax treaties, multi-jurisdiction governance.
Structure my holding →Manage payroll and HR
Salaries, CCSS, RTS, cross-border BE, FR, DE, contracts, benefits in kind, ITM compliance.
Outsource my payroll →Four profiles, four dedicated journeys.
Identify the one that fits you; we adapt the approach, the language and the team.
Family Office
Wealth governance, consolidated multi-entity reporting, confidential structuring.
Structure my wealth →International entrepreneur
Company formation, business license, substance, compliance. Turnkey.
Set up my company →Freelancer, self-employed
VAT, business license, remuneration optimisation. Without the Sunday-night stress.
Optimise VAT & payroll →Luxembourg SME
Accounting, payroll, VAT, tax. Fixed monthly package, reporting on the 15th.
Outsource my accounting →Why international groups choose a dedicated infrastructure.
Without naming anyone, but clearly setting out the differences between a traditional accounting firm and a financial infrastructure designed for international entrepreneurs and holdings.
Our eight expertise hubs.
Company formation
SARL, SA, SOPARFI, SPF, SARL-S.
Accountant Luxembourg
Bookkeeping, accounts, filings, Lux GAAP.
Consolidation
Consolidated accounts, Lux GAAP/IFRS.
VAT registration
VAT number, returns, OSS.
Payroll
Payroll, CCSS, social filings.
Independent director
Directorship, ATAD substance.
Corporate tax return
CIT, MBT, NWT filings.
Annual accounts
RCS filing, eCDF, AGM.
Liquidation
Company dissolution and closure.
Direct answers to Luxembourg's key questions.
As of 1 January 2026, the standard VAT rate is 17%, with reduced rates of 14%, 8% and a super-reduced rate of 3% (source AED). It is the lowest standard rate in the European Union.
The aggregate corporate tax rate in Luxembourg City is about 23.87% as of 1 January 2026: corporate income tax of 16%, increased by a 7% employment-fund surcharge, plus the municipal business tax of 6.75%.
A SOPARFI is a fully taxable Luxembourg company used to hold participations and structure international investments, benefiting from the participation exemption (art. 166 LIR).
The minimum capital of a SARL is EUR 12,000, fully paid up. The SARL-S can start between EUR 1 and EUR 12,000, and the SA requires EUR 30,000.
Annual accounts must be approved at a general meeting within six months of the financial year-end, then filed with the RCS via the eCDF platform, in principle within the month following approval.
Yes. Since the ATAD directives, a holding must have real substance: effective registered office, decision-making bodies in Luxembourg and documented governance, failing which tax benefits may be challenged.
What happens after you get in touch?
Scoping call
Free first call within 24 hours. We qualify your need, structure and timeline. NDA signed beforehand.
Costed proposal
Firm quote and action plan. Scope, fees, deadlines and a dedicated contact clearly defined.
Set-up
Incorporation, takeover of bookkeeping or migration. Structured transfer, with no service interruption.
Ongoing management
Accounting, filings, deadlines and reporting managed. Proactive alerts on obligations.
How much does an accountant cost in Luxembourg?
Indicative ranges, excluding disbursements and taxes. Firm quote after scoping.
Changing accountant in Luxembourg is simpler than most companies think.
Migration of your accounting, tax and payroll file to FSL in 4 structured steps, with no service interruption. Contractual confidentiality, full traceability, perfect compliance.
Start my migrationWhat worries you before changing firm.
Nine legitimate concerns, nine precise answers. Because security is a deliverable.
Estimate before you talk to us.
Two free simulators, no commitment. An answer in under two minutes, quantified and transparent.
What would your Luxembourg back office cost?
Indicative estimate, excluding disbursements and taxes. Firm quote after scoping.
Get a firm quoteFreelancer or SARL manager, how much net is left?
Turnover, costs, tax class, compare pure salary vs salary-and-dividend optimisation.
Form a company in Luxembourg with no hand-offs between providers.
A single contact from choosing the legal form to the first set of accounts. Partner notary, RCS filing, RBE, bank opening, VAT and CCSS registration, all coordinated.
We operate across all of Luxembourg's business districts.
Firm based at 142 Boulevard de la Pétrusse, in the heart of Luxembourg City. We serve clients in Kirchberg, Cloche d'Or, Belair, Strassen, Leudelange, Gasperich and Esch-sur-Alzette.
An augmented firm, neither manual nor anonymous.
AI does not replace the expert; it frees their time from repetitive tasks. AI-assisted workflows automate collection, entry and control. Decisions and advice stay human, supervised and signed.
Automated collection, OCR entry, intelligent bank reconciliation.
Our internal pipelines ingest your documents, extract structured data, automatically reconcile bank and invoices, and flag anomalies to a human expert for the final decision.
- Advanced OCR on supplier invoices and expense notes
- Automatic multi-account bank reconciliation
- Pre-close anomaly detection
- Per-client learned analytical categorisation
- Full audit trail, 10-year traceability
Real-time Luxembourg regulatory watch.
Continuous monitoring of Legilux, ACD, AED, CCSS, ITM. Alerts filtered by client profile and notified within 48h.
Client dashboard, fresh data.
Private portal access, monthly P&L, cash, custom KPIs. Data aggregated within 24h of the monthly close.
A living regulatory watch.
All our resourcesATAD and economic substance: 5 mistakes that cost the participation exemption
Cross-border workers BE, FR, DE: 2026 tax and social rules, remote work included
Frequent questions, precise answers.
Are you an authorised accounting firm?
Do you work with non-resident clients?
Can you take over existing bookkeeping?
Do you provide domiciliation and a local director?
What are your response times?
How do you ensure confidentiality?
What our clients say about our infrastructure.
Family offices, holdings, international entrepreneurs, SMEs. Real voices, measured results, identities protected by confidentiality agreement.
A single contact for four Luxembourg entities. Consolidated reporting delivered on the 15th without exception since 2019. Coordination with our lawyers in Geneva and Zurich became invisible.
SOPARFI set up in 5 weeks, bank opened in 3. The pre-structured KYC file made all the difference with our Luxembourg depositary.
Migration from our former firm with no interruption. First reporting delivered on the 15th of the next month, exactly on time. Fixed fee respected, no surprises.
The team anticipated an ACD audit before it even arrived. Documentation ready in 5 days, zero reassessment.
Fractional CFO 3 days a month, structured monthly board pack, investor KPIs ready for our Series B. We gained 2 years of financial maturity.
Freelance for 6 years, I changed accountant 3 times. FSL is the first to really explain how to optimise my remuneration.
The fastest and smoothest company registration process we've ever experienced.
From idea to fully operational in just 5 days. Fast and simple.
Partners & reference clients
Frequently asked questions
What services do you offer in Luxembourg?
How long does it take to set up a company?
When must annual accounts be filed?
Is an approved statutory auditor mandatory?
What is an accountant's hourly rate in Luxembourg?
Do I need a physical office in Luxembourg?
Which languages do you work in?
Verify our authorisation 10077274 in one scan.
A direct link to the official guichet.public.lu database of the Luxembourg State. Our fiduciary and accounting business license is publicly verifiable at any time.
Check on guichet.lu
10077274Request a quote
Reply within 24 business hours. NDA from first contact.